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        <link:definition>050 - Disclosure - Note 11 - Geographic And Segment Information (Detail) - Fees For Services Provided to Joint Ventures By Geographic Location as a Percentage of Total Fees for Services Provided to Joint Ventures:</link:definition>  
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        <link:usedOn>link:definitionLink</link:usedOn>     
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        <link:definition>053 - Disclosure - Note 11 - Geographic And Segment Information (Detail) - Total assets by geographic distribution:</link:definition>    
        <link:usedOn>link:presentationLink</link:usedOn>  
        <link:usedOn>link:definitionLink</link:usedOn>     
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        <link:definition>054 - Disclosure - Note 11 - Geographic And Segment Information (Detail) - Operating income by geographic distribution:</link:definition>   
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        <link:usedOn>link:definitionLink</link:usedOn>     
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        <link:definition>055 - Disclosure - Note 12 - Research and Development (Detail)</link:definition> 
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        <link:usedOn>link:definitionLink</link:usedOn>     
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        <link:definition>056 - Disclosure - Note 13 - Commitments and Contingencies (Detail)</link:definition> 
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        <link:definition>000 - Disclosure - Document And Entity Information</link:definition>    
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        <link:usedOn>link:calculationLink</link:usedOn> 
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  <xs:element name="KoreaMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_KoreaMember"/>   
  <xs:element name="FranceMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_FranceMember"/>     
  <xs:element name="InsideTheUSAToUnaffiliatedCustomersMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_InsideTheUSAToUnaffiliatedCustomersMember"/>   
  <xs:element name="TermLoanAndLineOfCreditAgreementsLoanAgreementsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_TermLoanAndLineOfCreditAgreementsLoanAgreementsMember"/>  
  <xs:element name="ESPPMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_ESPPMember"/> 
  <xs:element name="FinlandMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_FinlandMember"/>  
  <xs:element name="MonthlyPaymentsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_MonthlyPaymentsMember"/>   
  <xs:element name="UnitedKingdomMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_UnitedKingdomMember"/>    
  <xs:element name="NorthAmericaMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_NorthAmericaMember"/>  
  <xs:element name="NTIASEANMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_NTIASEANMember"/>    
  <xs:element name="UnaffiliatedCustomersOutsideTheUSAMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_UnaffiliatedCustomersOutsideTheUSAMember"/> 
  <xs:element name="PatentsAndTrademarksMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_PatentsAndTrademarksMember"/>   
  <xs:element name="GermanyMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_GermanyMember"/>  
  <xs:element name="JointVenturesInWhichTheCompanyIsAShareholderDirectlyAndIndirectlyOutsideTheUSAMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_JointVenturesInWhichTheCompanyIsAShareholderDirectlyAndIndirectlyOutsideTheUSAMember"/>    
  <xs:element name="IndirectCostOfGoodsSoldMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_IndirectCostOfGoodsSoldMember"/>    
  <xs:element name="TermLoanMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_TermLoanMember"/>    
  <xs:element name="ChinaMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_ChinaMember"/>   
  <xs:element name="FeesForServicesProvidedToJointVenturesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_FeesForServicesProvidedToJointVenturesMember"/>    
  <xs:element name="DirectCostOfGoodsSoldMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_DirectCostOfGoodsSoldMember"/>     
  <xs:element name="JointVentureFeesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_JointVentureFeesMember"/>     
  <xs:element name="AsReportedMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_AsReportedMember"/>   
  <xs:element name="ThailandMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_ThailandMember"/>    
  <xs:element name="NetOfEstimatedForfeituresMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_NetOfEstimatedForfeituresMember"/>   
  <xs:element name="EXCORMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_EXCORMember"/>   
  <xs:element name="Fiscal2012BonusPlanMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_Fiscal2012BonusPlanMember"/> 
  <xs:element name="ResearchAndDevelopmentContractsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_ResearchAndDevelopmentContractsMember"/>     
  <xs:element name="JapanMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_JapanMember"/>   
  <xs:element name="AllOtherMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_AllOtherMember"/>    
  <xs:element name="Exercise2Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_Exercise2Member"/> 
  <xs:element name="IndiaMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_IndiaMember"/>   
  <xs:element name="CommonStockBonusesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_CommonStockBonusesMember"/>    
  <xs:element name="EliminatedInConsolidationMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_EliminatedInConsolidationMember"/>   
  <xs:element name="CapitalizationRateToDetermineFairValueOfNTIAseanMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_CapitalizationRateToDetermineFairValueOfNTIAseanMember"/>    
  <xs:element name="BrazilMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_BrazilMember"/>     
  <xs:element name="ZERUSTMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_ZERUSTMember"/>     
  <xs:element name="NaturTecMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_NaturTecMember"/>    
  <xs:element name="Exercise1Member" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_Exercise1Member"/> 
  <xs:element name="OtherCountriesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_OtherCountriesMember"/> 
  <xs:element name="PolandMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_PolandMember"/>     
  <xs:element name="TwoThousandSevenPlanMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_TwoThousandSevenPlanMember"/>   
  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ntic_DocumentAndEntityInformationAbstract"/> 
</xs:schema>   





