| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ --> |
<!-- Creation Date : 2023-03-10T21:48:04.2163760+00:00 --> |
<!-- Version : 5.0.1.780 --> |
<!-- Package ID : 4feabe5126d4484289dac4622b7d168d --> |
<!-- Copyright (c) 2023 Donnelley Financial Solutions, Inc. All Rights Reserved. --> |
<xsd:schema xmlns:dei="http://xbrl.sec.gov/dei/2022" xmlns:us-types="http://fasb.org/us-types/2022" xmlns:stpr="http://xbrl.sec.gov/stpr/2022" xmlns:srt-types="http://fasb.org/srt-types/2022" xmlns:sic="http://xbrl.sec.gov/sic/2022" xmlns:acu="http://www.acmeunited.com/20221231" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:srt="http://fasb.org/srt/2022" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-gaap="http://fasb.org/us-gaap/2022" xmlns:naics="http://xbrl.sec.gov/naics/2022" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:country="http://xbrl.sec.gov/country/2022" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:currency="http://xbrl.sec.gov/currency/2022" xmlns:exch="http://xbrl.sec.gov/exch/2022" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.acmeunited.com/20221231" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> |
| <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance"/> |
| <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase"/> |
| <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt"/> |
| <xsd:import schemaLocation="https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd" namespace="http://xbrl.org/2020/extensible-enumerations-2.0"/> |
| <xsd:import schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd" namespace="http://xbrl.sec.gov/country/2022"/> |
| <xsd:import schemaLocation="https://xbrl.sec.gov/currency/2022/currency-2022.xsd" namespace="http://xbrl.sec.gov/currency/2022"/> |
| <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd" namespace="http://xbrl.sec.gov/dei/2022"/> |
| <xsd:import schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" namespace="http://www.xbrl.org/dtr/type/2020-01-21"/> |
| <xsd:import schemaLocation="https://xbrl.sec.gov/exch/2022/exch-2022.xsd" namespace="http://xbrl.sec.gov/exch/2022"/> |
| <xsd:import schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact"/> |
| <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/negated"/> |
| <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/net"/> |
| <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2022/naics-2022.xsd" namespace="http://xbrl.sec.gov/naics/2022"/> |
| <xsd:import schemaLocation="https://xbrl.sec.gov/sic/2022/sic-2022.xsd" namespace="http://xbrl.sec.gov/sic/2022"/> |
| <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd" namespace="http://fasb.org/srt/2022"/> |
| <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-roles-2022.xsd" namespace="http://fasb.org/srt-roles/2022"/> |
| <xsd:import schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-types-2022.xsd" namespace="http://fasb.org/srt-types/2022"/> |
| <xsd:import schemaLocation="https://xbrl.sec.gov/stpr/2022/stpr-2022.xsd" namespace="http://xbrl.sec.gov/stpr/2022"/> |
| <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd" namespace="http://fasb.org/us-gaap/2022"/> |
| <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-roles-2022.xsd" namespace="http://fasb.org/us-roles/2022"/> |
| <xsd:import schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-types-2022.xsd" namespace="http://fasb.org/us-types/2022"/> |
| <xsd:annotation> |
| | <xsd:appinfo> |
| | | <link:roleType id="TemplateLink" roleURI="http://www.acmeunited.com/20221231/role/TemplateLink" xmlns:link="http://www.xbrl.org/2003/linkbase"> |
| <link:definition> 00000 - Document - Template Link </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="acu-20221231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:title="Calculation Links, all" xlink:type="simple" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink"/> |
| | | <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="acu-20221231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links, all" xlink:type="simple"/> |
| | | <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="acu-20221231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple"/> |
| | | <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="acu-20221231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple"/> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation"> |
| <link:definition> 100000 - Document - Document and Entity Information </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/StatementConsolidatedStatementsOfOperations" id="Role_StatementConsolidatedStatementsOfOperations"> |
| <link:definition> 100010 - Statement - Consolidated Statements of Operations </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncome" id="Role_StatementConsolidatedStatementsOfComprehensiveIncome"> |
| <link:definition> 100020 - Statement - Consolidated Statements of Comprehensive Income </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/StatementCondensedConsolidatedBalanceSheets" id="Role_StatementCondensedConsolidatedBalanceSheets"> |
| <link:definition> 100030 - Statement - Condensed Consolidated Balance Sheets </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/StatementCondensedConsolidatedBalanceSheetsParenthetical" id="Role_StatementCondensedConsolidatedBalanceSheetsParenthetical"> |
| <link:definition> 100040 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/StatementConsolidatedStatementsOfChangesInStockholdersEquity" id="Role_StatementConsolidatedStatementsOfChangesInStockholdersEquity"> |
| <link:definition> 100050 - Statement - Consolidated Statements of Changes in Stockholders' Equity </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/StatementConsolidatedStatementsOfCashFlows" id="Role_StatementConsolidatedStatementsOfCashFlows"> |
| <link:definition> 100060 - Statement - Consolidated Statements of Cash Flows </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureOperations" id="Role_DisclosureOperations"> |
| <link:definition> 100070 - Disclosure - Operations </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureAccountingPolicies" id="Role_DisclosureAccountingPolicies"> |
| <link:definition> 100080 - Disclosure - Accounting Policies </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureInventories" id="Role_DisclosureInventories"> |
| <link:definition> 100090 - Disclosure - Inventories </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIntangibleAssetsAndGoodwill" id="Role_DisclosureIntangibleAssetsAndGoodwill"> |
| <link:definition> 100100 - Disclosure - Intangible Assets and Goodwill </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureOtherAccruedLiabilities" id="Role_DisclosureOtherAccruedLiabilities"> |
| <link:definition> 100110 - Disclosure - Other Accrued Liabilities </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureProfitSharing" id="Role_DisclosureProfitSharing"> |
| <link:definition> 100120 - Disclosure - Profit Sharing </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIncomeTaxes" id="Role_DisclosureIncomeTaxes"> |
| <link:definition> 100130 - Disclosure - Income Taxes </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLongTermDebtAndShareholdersEquity" id="Role_DisclosureLongTermDebtAndShareholdersEquity"> |
| <link:definition> 100140 - Disclosure - Long-Term Debt and Shareholders' Equity </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureRevenueFromContractsWithCustomers" id="Role_DisclosureRevenueFromContractsWithCustomers"> |
| <link:definition> 100150 - Disclosure - Revenue from Contracts with Customers </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureSegmentInformation" id="Role_DisclosureSegmentInformation"> |
| <link:definition> 100160 - Disclosure - Segment Information </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureStockOptionPlans" id="Role_DisclosureStockOptionPlans"> |
| <link:definition> 100170 - Disclosure - Stock Option Plans </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureEarningsPerShare" id="Role_DisclosureEarningsPerShare"> |
| <link:definition> 100180 - Disclosure - Earnings Per Share </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLoss" id="Role_DisclosureAccumulatedOtherComprehensiveLoss"> |
| <link:definition> 100190 - Disclosure - Accumulated Other Comprehensive Loss </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureCashCashEquivalentsAndRestrictedCash" id="Role_DisclosureCashCashEquivalentsAndRestrictedCash"> |
| <link:definition> 100200 - Disclosure - Cash, Cash Equivalents and Restricted Cash </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLeases" id="Role_DisclosureLeases"> |
| <link:definition> 100210 - Disclosure - Leases </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureBusinessCombinations" id="Role_DisclosureBusinessCombinations"> |
| <link:definition> 100220 - Disclosure - Business Combinations </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureAccountingPoliciesPolicies" id="Role_DisclosureAccountingPoliciesPolicies"> |
| <link:definition> 100230 - Disclosure - Accounting Policies (Policies) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureInventoriesTables" id="Role_DisclosureInventoriesTables"> |
| <link:definition> 100240 - Disclosure - Inventories (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIntangibleAssetsAndGoodwillTables" id="Role_DisclosureIntangibleAssetsAndGoodwillTables"> |
| <link:definition> 100250 - Disclosure - Intangible Assets and Goodwill (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureOtherAccruedLiabilitiesTables" id="Role_DisclosureOtherAccruedLiabilitiesTables"> |
| <link:definition> 100260 - Disclosure - Other Accrued Liabilities (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIncomeTaxesTables" id="Role_DisclosureIncomeTaxesTables"> |
| <link:definition> 100270 - Disclosure - Income Taxes (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLongTermDebtAndShareholdersEquityTables" id="Role_DisclosureLongTermDebtAndShareholdersEquityTables"> |
| <link:definition> 100280 - Disclosure - Long-Term Debt and Shareholders’ Equity (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureRevenueFromContractsWithCustomersTables" id="Role_DisclosureRevenueFromContractsWithCustomersTables"> |
| <link:definition> 100290 - Disclosure - Revenue from Contracts with Customers (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureSegmentInformationTables" id="Role_DisclosureSegmentInformationTables"> |
| <link:definition> 100300 - Disclosure - Segment Information (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureStockOptionPlansTables" id="Role_DisclosureStockOptionPlansTables"> |
| <link:definition> 100310 - Disclosure - Stock Option Plans (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureEarningsPerShareTables" id="Role_DisclosureEarningsPerShareTables"> |
| <link:definition> 100320 - Disclosure - Earnings Per Share (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossTables" id="Role_DisclosureAccumulatedOtherComprehensiveLossTables"> |
| <link:definition> 100330 - Disclosure - Accumulated Other Comprehensive Loss (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureCashCashEquivalentsAndRestrictedCashTables" id="Role_DisclosureCashCashEquivalentsAndRestrictedCashTables"> |
| <link:definition> 100340 - Disclosure - Cash, Cash Equivalents and Restricted Cash (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLeasesTables" id="Role_DisclosureLeasesTables"> |
| <link:definition> 100350 - Disclosure - Leases (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureBusinessCombinationsTables" id="Role_DisclosureBusinessCombinationsTables"> |
| <link:definition> 100360 - Disclosure - Business Combinations (Tables) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureAccountingPoliciesAccountingPoliciesDetailNarrative" id="Role_DisclosureAccountingPoliciesAccountingPoliciesDetailNarrative"> |
| <link:definition> 100370 - Disclosure - Accounting Policies - Accounting Policies (Detail Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureInventoriesInventoriesDetails" id="Role_DisclosureInventoriesInventoriesDetails"> |
| <link:definition> 100380 - Disclosure - Inventories - Inventories (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureInventoriesDetailsNarrative" id="Role_DisclosureInventoriesDetailsNarrative"> |
| <link:definition> 100390 - Disclosure - Inventories (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIntangibleAssetsAndGoodwillIntangibleAssetsDetails" id="Role_DisclosureIntangibleAssetsAndGoodwillIntangibleAssetsDetails"> |
| <link:definition> 100400 - Disclosure - Intangible Assets and Goodwill - Intangible Assets (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIntangibleAssetsAndGoodwillDetailsNarrative" id="Role_DisclosureIntangibleAssetsAndGoodwillDetailsNarrative"> |
| <link:definition> 100410 - Disclosure - Intangible Assets and Goodwill (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureOtherAccruedLiabilitiesDetails" id="Role_DisclosureOtherAccruedLiabilitiesDetails"> |
| <link:definition> 100420 - Disclosure - Other Accrued Liabilities (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureProfitSharingDetailsNarrative" id="Role_DisclosureProfitSharingDetailsNarrative"> |
| <link:definition> 100430 - Disclosure - Profit Sharing (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIncomeTaxesIncomeTaxExpenseDetails" id="Role_DisclosureIncomeTaxesIncomeTaxExpenseDetails"> |
| <link:definition> 100440 - Disclosure - Income Taxes - Income Tax Expense (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIncomeTaxesUSAndForeignIncomeBeforeIncomeTaxesDetails" id="Role_DisclosureIncomeTaxesUSAndForeignIncomeBeforeIncomeTaxesDetails"> |
| <link:definition> 100450 - Disclosure - Income Taxes - US and Foreign Income Before Income Taxes (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIncomeTaxesDetailsNarrative" id="Role_DisclosureIncomeTaxesDetailsNarrative"> |
| <link:definition> 100460 - Disclosure - Income Taxes (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIncomeTaxesUSStatutoryRateReconciliationDetails" id="Role_DisclosureIncomeTaxesUSStatutoryRateReconciliationDetails"> |
| <link:definition> 100470 - Disclosure - Income Taxes - US Statutory Rate Reconciliation (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails" id="Role_DisclosureIncomeTaxesDeferredTaxAssetsAndLiabilitiesDetails"> |
| <link:definition> 100480 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLongTermDebtAndShareholdersEquityDetailsNarrative" id="Role_DisclosureLongTermDebtAndShareholdersEquityDetailsNarrative"> |
| <link:definition> 100490 - Disclosure - Long-Term Debt and Shareholders' Equity (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLongTermDebtAndShareholdersEquityScheduleOfLongTermDebtDetails" id="Role_DisclosureLongTermDebtAndShareholdersEquityScheduleOfLongTermDebtDetails"> |
| <link:definition> 100500 - Disclosure - Long-Term Debt and Shareholders' Equity - Schedule of Long-Term Debt (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLongTermDebtAndShareholdersEquityScheduleOfLongTermDebtDetails2" id="Role_DisclosureLongTermDebtAndShareholdersEquityScheduleOfLongTermDebtDetails2"> |
| <link:definition> 100510 - Disclosure - Long-Term Debt and Shareholders' Equity - Schedule of Long-Term Debt (Details)2 </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureRevenueFromContractsWithCustomersDetails" id="Role_DisclosureRevenueFromContractsWithCustomersDetails"> |
| <link:definition> 100520 - Disclosure - Revenue from Contracts with Customers (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureSegmentInformationDetailsNarrative" id="Role_DisclosureSegmentInformationDetailsNarrative"> |
| <link:definition> 100530 - Disclosure - Segment Information (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureSegmentInformationFinancialDataBySegmentDetails" id="Role_DisclosureSegmentInformationFinancialDataBySegmentDetails"> |
| <link:definition> 100540 - Disclosure - Segment Information - Financial Data by Segment (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureSegmentInformationReconciliationOfSegmentOperatingIncomeDetails" id="Role_DisclosureSegmentInformationReconciliationOfSegmentOperatingIncomeDetails"> |
| <link:definition> 100550 - Disclosure - Segment Information - Reconciliation of Segment Operating Income (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureSegmentInformationSegmentRevenuesDetails" id="Role_DisclosureSegmentInformationSegmentRevenuesDetails"> |
| <link:definition> 100560 - Disclosure - Segment Information - Segment Revenues (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureStockOptionPlansDetailsNarrative" id="Role_DisclosureStockOptionPlansDetailsNarrative"> |
| <link:definition> 100570 - Disclosure - Stock Option Plans (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureStockOptionPlansStockOptionActivityDetails" id="Role_DisclosureStockOptionPlansStockOptionActivityDetails"> |
| <link:definition> 100580 - Disclosure - Stock Option Plans - Stock Option Activity (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureStockOptionPlansSummaryOfOptionsOutstandingDetails" id="Role_DisclosureStockOptionPlansSummaryOfOptionsOutstandingDetails"> |
| <link:definition> 100590 - Disclosure - Stock Option Plans - Summary of Options Outstanding (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureStockOptionPlansAssumptionsUsedToValueOptionGrantsDetails" id="Role_DisclosureStockOptionPlansAssumptionsUsedToValueOptionGrantsDetails"> |
| <link:definition> 100600 - Disclosure - Stock Option Plans - Assumptions Used to Value Option Grants (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureEarningsPerShareEarningsPerShareDetails" id="Role_DisclosureEarningsPerShareEarningsPerShareDetails"> |
| <link:definition> 100610 - Disclosure - Earnings Per Share - Earnings Per Share (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureEarningsPerShareDetailsNarrative" id="Role_DisclosureEarningsPerShareDetailsNarrative"> |
| <link:definition> 100620 - Disclosure - Earnings Per Share (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossAccumulatedComprehensiveLossDetails" id="Role_DisclosureAccumulatedOtherComprehensiveLossAccumulatedComprehensiveLossDetails"> |
| <link:definition> 100630 - Disclosure - Accumulated Other Comprehensive Loss - Accumulated Comprehensive Loss (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureCashCashEquivalentsAndRestrictedCashSummaryOfCashCashEquivalentsAndRestrictedCashDetails" id="Role_DisclosureCashCashEquivalentsAndRestrictedCashSummaryOfCashCashEquivalentsAndRestrictedCashDetails"> |
| <link:definition> 100640 - Disclosure - Cash, Cash Equivalents and Restricted Cash - Summary of Cash, Cash Equivalents and Restricted Cash (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLeasesDetailsNarrative" id="Role_DisclosureLeasesDetailsNarrative"> |
| <link:definition> 100650 - Disclosure - Leases (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLeasesInformationRelatedToLeasesDetails" id="Role_DisclosureLeasesInformationRelatedToLeasesDetails"> |
| <link:definition> 100660 - Disclosure - Leases - Information Related to Leases (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLeasesFutureMinimumLeasePaymentsDetails" id="Role_DisclosureLeasesFutureMinimumLeasePaymentsDetails"> |
| <link:definition> 100670 - Disclosure - Leases - Future Minimum Lease Payments (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureLeasesFutureMinimumLeasePaymentsDetails2" id="Role_DisclosureLeasesFutureMinimumLeasePaymentsDetails2"> |
| <link:definition> 100680 - Disclosure - Leases - Future Minimum Lease Payments (Details)2 </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureBusinessCombinationsDetailsNarrative" id="Role_DisclosureBusinessCombinationsDetailsNarrative"> |
| <link:definition> 100690 - Disclosure - Business Combinations (Details Narrative) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.acmeunited.com/20221231/taxonomy/role/DisclosureBusinessCombinationsScheduleOfPurchasePriceAllocationToAssetsAcquiredDetails" id="Role_DisclosureBusinessCombinationsScheduleOfPurchasePriceAllocationToAssetsAcquiredDetails"> |
| <link:definition> 100700 - Disclosure - Business Combinations - Schedule of Purchase Price Allocation to Assets Acquired (Details) </link:definition> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | </xsd:appinfo> |
| | </xsd:annotation> |
| <xsd:element id="acu_IncomeTaxReconciliationPermanentItems" name="IncomeTaxReconciliationPermanentItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="acu_PPPLoanForgiveness" name="PPPLoanForgiveness" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_CondensedConsolidatedStatementsOfOperations" name="CondensedConsolidatedStatementsOfOperations" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_CondensedConsolidatedStatementsOfComprehensiveLossIncomeAbstract" name="CondensedConsolidatedStatementsOfComprehensiveLossIncomeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_MortgagePayableNonCurrent" name="MortgagePayableNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_AdjustmentsToAdditionalPaidInCapitalCashSettlementOfStockOptions" name="AdjustmentsToAdditionalPaidInCapitalCashSettlementOfStockOptions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="acu_NetShareSettlementOfStockOptionsShares" name="NetShareSettlementOfStockOptionsShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_NetShareSettlementOfStockOptions" name="NetShareSettlementOfStockOptions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="acu_NonCashLeaseAdjustment" name="NonCashLeaseAdjustment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="acu_RepaymentsOnMortgage" name="RepaymentsOnMortgage" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_BorrowingOnMortgage" name="BorrowingOnMortgage" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="acu_PaymentsRelatedToCashSettlementOfShareBasedCompensation" name="PaymentsRelatedToCashSettlementOfShareBasedCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_PaymentsOfTaxOnNetShareSettlementOfStockOptions" name="PaymentsOfTaxOnNetShareSettlementOfStockOptions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_BusinessAcquisitionContingentConsideration" name="BusinessAcquisitionContingentConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_NonCashOrPartNonCashDividendsAccruedNotPaid" name="NonCashOrPartNonCashDividendsAccruedNotPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_NoncashFinancingItemsAbstract" name="NoncashFinancingItemsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_DebtAbstract" name="DebtAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_SegmentInformationAbstract" name="SegmentInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ShippingCostsPolicyTextBlock" name="ShippingCostsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_LongTermDebtAndStockholdersEquityAbstract" name="LongTermDebtAndStockholdersEquityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_SegmentInformationTablesAbstract" name="SegmentInformationTablesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_LeasesTablesAbstract" name="LeasesTablesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_AccountingPoliciesLineItems" name="AccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_AccountingPoliciesTable" name="AccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_LiveSafelyProductsLLCMember" name="LiveSafelyProductsLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_TwoMajorCustomersMember" name="TwoMajorCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_RevenueMilestonePeriod" name="RevenueMilestonePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_CostOfGoodsAndServicesSoldShippingAndHandling" name="CostOfGoodsAndServicesSoldShippingAndHandling" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="acu_ConcentrationRiskNumberOfMajorCustomers" name="ConcentrationRiskNumberOfMajorCustomers" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_AccruedCustomerRebates" name="AccruedCustomerRebates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_AccruedContingentLiabilityCurrentAndNoncurrent" name="AccruedContingentLiabilityCurrentAndNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_ForeignIncomeTaxRate" name="ForeignIncomeTaxRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_ReportableSegmentsDMember" name="ReportableSegmentsDMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_DeferredTaxAssetsAssetValuations" name="DeferredTaxAssetsAssetValuations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/> |
| <xsd:element id="acu_LineOfCreditFacilityFeePercentage" name="LineOfCreditFacilityFeePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_IncreasedRatioOfFundedDebtToEBITDA" name="IncreasedRatioOfFundedDebtToEBITDA" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/> |
| <xsd:element id="acu_LongTermDebtAndStockholdersEquityLineItems" name="LongTermDebtAndStockholdersEquityLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_LongTermDebtAndStockholdersEquityTable" name="LongTermDebtAndStockholdersEquityTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_SecuredOvernightFinancingRateMember" name="SecuredOvernightFinancingRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_PaycheckProtectionProgramMember" name="PaycheckProtectionProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_MortgagePayableHSBCBankNAMember" name="MortgagePayableHSBCBankNAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ProductAMember" name="ProductAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ProductBMember" name="ProductBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_RevenuesDisaggregationByCategory" name="RevenuesDisaggregationByCategory" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/> |
| <xsd:element id="acu_DirectImportSalesToTotalNetSalesPercentage" name="DirectImportSalesToTotalNetSalesPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_SegmentInformationDetailsNarrativeAbstract" name="SegmentInformationDetailsNarrativeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_UnitedStatesSegmentMember" name="UnitedStatesSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_CanadaSegmentMember" name="CanadaSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_EuropeSegmentMember" name="EuropeSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ReconciliationOfSegmentOperatingIncomeDetailsAbstract" name="ReconciliationOfSegmentOperatingIncomeDetailsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ACUSegmentRevenuesDetailsAbstract" name="ACUSegmentRevenuesDetailsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ReportableSegmentsCMember" name="ReportableSegmentsCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_TotalInternationalMember" name="TotalInternationalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_PlanNameMember" name="PlanNameMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_PlanNameAMember" name="PlanNameAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_PlanNameBMember" name="PlanNameBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_TwoThousandTwentyTwoEmployeePlanMember" name="TwoThousandTwentyTwoEmployeePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOption" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialOption" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/> |
| <xsd:element id="acu_ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualOption" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualOption" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/> |
| <xsd:element id="acu_IssueOfSharesRelatedToSettlementOfShareBasedCompensation" name="IssueOfSharesRelatedToSettlementOfShareBasedCompensation" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/> |
| <xsd:element id="acu_ShareBasedCompensationArrangementsByShareBasedPaymentAwardWeightedAverageExercisePricePerShareAbstract" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardWeightedAverageExercisePricePerShareAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ExercisePriceRangeAMember" name="ExercisePriceRangeAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ExercisePriceRangeBMember" name="ExercisePriceRangeBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ExercisePriceRangeCMember" name="ExercisePriceRangeCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ExercisePriceRangeDMember" name="ExercisePriceRangeDMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_ExercisePriceRangeEMember" name="ExercisePriceRangeEMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_IncomeStatementMember" name="IncomeStatementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_IncomeStatementAMember" name="IncomeStatementAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_LeasesDetailsAbstract" name="LeasesDetailsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_SafetyMadeProductsMember" name="SafetyMadeProductsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_SafetyMadeMember" name="SafetyMadeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_BacklogMember" name="BacklogMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| <xsd:element id="acu_NonCompeteMember" name="NonCompeteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/> |
| </xsd:schema> |