1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1995 01 31 C10460360 Released J.W. WilliamsWP 3948-a Page 1 of 4PADDING, POLYESTER FIBRE WSD-M17H166-A1WSD-M17H166-A21. SCOPEThe material defined by this sp ecification is a padding produced from highbulk p
2、o lyester fibre, thermally bonded with low melting point polyesterfibres.2. APPLICATIONThese specifications were released originally for material used as asupport padding in the construc tion of seat cushions and seat backs and/oras specified on Engineering Drawings.3. REQUIREMENTS3.1 STATISTICAL PR
3、OCESSSupplie 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 variation in the final product is
4、 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 thermograms established for i nitial approval shallconst itute the reference
5、 standard and shall be kept on file at thedesignated material laboratory. All samples sha ll produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on ma terial co
6、nditioned 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.ENGINEERING MATERIAL SPECIFICATION WSD -M17H166-A1WSD-M17H166-A2WP 3948-b Page 2 of 43.4 APPEARANCEThe fibres shal
7、l be distributed in a random mann er to ensure adequatefirmn ess. The material shall be free from fibre accumulations orholes, lumps or other deficiencies which may cause difficulties inproducti on. The surface of the material shall be firm and even toensure easy handling in production.3.5 DIMENSION
8、S(FLTM BN 114-01, 85 g Plate)A1 A23.5.1 Thickness, mm, range 35 - 40 35 - 403.5.2 Other DimensionsAs specified on Engineering Drawings3.6 WEIGHT, g/m2, min 370 220(FLTM BN 106-01)3.7 COMPOSITION3.7.1 PaddingPadding Fibre 80 % of total pad weightFiber Type High bulk polyesterStaple Length 60 mmFiber
9、Size 17 dtexBinder Fibre 20 % of total pad weightFiber Type Low melting point polyesterStaple Length 51 mmFiber Size 44 dtex3.7.2 Backing Fabric, WSD-M17H166A1 onlyAt the suppliers discretion, provided his product fullymeet s all the performance requirements laid down in thisspecification. The suppl
10、ier must provide the affectedMaterials Engineering activity with accurate mat erial detailsat th e time he seeks approval and re-approval of hismaterial.3.8 COMPRESSION AND RECOVERY(SAE J1352, Method B except 85 g platen and 53 N load)Compression, %, max 70 70Recovery, %, min 90 753.9 PAD FORMATIONT
11、he fibre padding shall be so formed to prevent any delamination atany plane within the th ickness of the pad during normal handling andmanufacturing operations.ENGINEERING MATERIAL SPECIFICATION WSD -M17H166-A1WSD-M17H166-A2WP 3948-b Page 3 of 43.10 OBJECTIONABLE CONTAMINANTSThe mat erial shall be f
12、ree from any contaminants which might causecontact staining of the trim cover material. Their shall be noevidence of staining when tested in accordance with FLTM AN 101-03.3.11 ODOUR, max Rating 2(FLTM BO 131-01)3.12 FOGGING(FLTM BO 116-03, 3 hours, 100 C)Fog Number, min 60Formati on of a clear film
13、 droplets or crystals is cause forrejection.3.13 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/min3.14 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
14、 change in the properties, composition,constr uction, color, processing or labeling of the materialorig inally 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 a
15、ffected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials 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 mater
16、ials addressed by this document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATION WSD -M17H166-A1WSD-M17H166-A2WP 3948-b Page 4 of 44. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theres
17、p onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials 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 comple
18、ted copy of their laboratory test reports, signed by aqualified and authorized representative 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, andtes t specimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and on anassessment of suitability for intended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.
