1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1992 06 08 C10220430 Released V.M. JoshiWP 3948-a Page 1 of 4 FABRIC, POLYPROPYLENE (PP), SPUNBONDED/FILM LAMINATE WSD-M9H114-C1. SCOPEThe material defined by this specification is a spunbonded, non
2、-wovenfabric made of continuous filaments, laminated to a poly ethylene film. Thefabric has a pin-point geometric pattern transferred by thermal bonding.2. APPLICATIONThis s pecification was released originally for material used as a supportin the foam seat cushion and seat-back pad assemblies.3. RE
3、QUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat varia
4、tion in the final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of material/parts supplied to this specification.The IR spectra and ther mogram established for initial approval sha
5、llconst itute the reference standard and shall be kept on file at thedesignated material laboratory. All samples sha ll produce IR spectraand thermogram that cor respond to the reference standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herei
6、n are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 COMPOSITION(ASTM D 629)3.4.1 Fabric (unlaminated) 100 % polypropylene3.4.2 Laminati
7、on Film 1 00 % polyethyleneENGINEERING MATERIAL SPECIFICATIONWSD-M9H114-CWP 3948-b Page 2 of 4 3.5 FIBRE SIZE 2.2 dTex(ASTM D 1244)3.6 WEIGHT, min(FLTM BN 106-01)3.6.1 Fabric (unlaminated) 45 g/m23.6.2 Film 12 g/m23.6.3 Total Weight 57 g/m23.7 LAMINATED FABRIC3.7.1 Breaking Strength, min(ASTM D 1682
8、, GT Method 300 mm/minute,average of 5 samples)WMD 70 NAMD 75 N3.7.2 Tear Strength (trapezoid), min(FLTM BN 122-01)WMD 22 NAMD 25 N3.7.3 Dimensional Stability, max(1 h at 100 +/- 2 C, specimensize 250 x 250 mm)WMD 1 %AMD 1 %3.8 FOGGING(FLTM BO 116-03, 3 h at 100 +/- 2 C)Fog Number, min 60The formati
9、on of droplets or coalescence into a clear film shall because for rejection.3.9 SQUEAKINGThis material shall not cause objectionable noises when used in theproduction seat assembly.3.10 FUNCTIONAL APPROVALMaterials being evaluat ed for initial approval to this specificationshall be subjected to a pr
10、oduction functional trial. The functionaltrial results shall be available to design and material engineeringactivities prior to material approval and release.ENGINEERING MATERIAL SPECIFICATIONWSD-M9H114-CWP 3948-b Page 3 of 4 3.11 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.12 ADDIT
11、IONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specifications. All critical areas with respect tothese properties shall be clearly designated on the engineeringdrawing.3.
12、13 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the properties, composition,const ruction, colour, processing or labelling of the materialorig in
13、ally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of the Mater
14、ials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WS S-M9
15、9P9999-A1, unlessa dif ferent suffix (e.g. A2 or A3) is specified on the engineeringdocument for the application.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engineeri ng activity. Suppliers desiring approval ofthe ir materials
16、 shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized represent
17、ative of the test faci lity, demonstratingful l compliance with all the requirements of this specification (testresults, not nominal values), the material designation a nd code number, andtest specimens for Ford evaluation. In addition to meeti ng the requirementsof thi s specification, the material
18、s will be assessed for suitability forintended applications as part o f the approval process. Upon approval, thematerial will be added to the Engineering Material Approved Source List.ENGINEERING MATERIAL SPECIFICATIONWSD-M9H114-CWP 3948-b Page 4 of 4 5. GENERAL INFORMATIONThe information given below is provided for clarification and assistancein meeting the requirements of this specification.5.1 WIDTH As specified on(ASTM D 3774) Engineering Drawing
