1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1992 06 08 C10220434 Released J. JoshiWP 3948-a Page 1 of 3 FABRIC, POLYPROPYLENE, SPUN BONDED, NON-WOVEN, 45 g/m2 WSD-M9H133-A1 FABRIC, POLYPROPYLENE, SPUN BONDED, NON-WOVEN, 55 g/m2 WSD-M9H133-A2F
2、ABRIC, POLYPROPYLENE, SPUN BONDED, NON-WOVEN, 70 g/m2 WSD-M9H133-A3FABRIC, POLYPROPYLENE, SPUN BONDED, NON-WOVEN, 90 g/m2 WSD-M9H133-A41. SCOPEThe materials defined by these specifications are spunbonded, non-wovenfabrics made from continuous filaments. The fabric has a pinpoint geometricpattern tra
3、nsferred by thermal bonding.2. APPLICATIONThis s pecification was released originally for material used as a supportfor foam seat cushion and seat-back cushion pad assemblies.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mu
4、tually 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 continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Compa
5、ny, 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 shallconst itute the reference standard and shall be kept on file at thedesignated material laboratory. All samples sha ll
6、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 herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not le
7、ss than 24 h prior to testing and tested under thesame conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONWSD-M9H133-A1/A2/A3/A4WP 3948-b Page 2 of 3 3.4 COMPOSITION 100 % polypropylene(ASTM D 629)3.5 FIBRE SIZE 2.2 dTex(ASTM D 1244)3.6 PHYSICAL REQUIREMENTSWeight Breaking Stren
8、gth Tear Strength Dimensionalg/m2, min N, min N, min Stability, mm(FLTM BN 106-01) (ASTM D 1682, Trapezoid max, 1 h storageSpecimen Size GT Method Test (FLTM BN at 100 +/- 2 C300 x 300 mm Speed 300 mm/min 122-01) Specimen SizeAvg. of 5 samples 300 x 300 mmWSD-M9H133-WMD AMD WMD AMD WMD AMDA1 45 70 7
9、5 22 25 1.0 1.0A2 55 90 95 25 30 1.0 1.0A3 70 110 115 30 35 1.0 1.0A4 90 145 150 40 45 1.0 1.03.7 FOGGING(FLTM BO 116-03)Fog Number, min 60The formation of drop lets or coalescence into a clear film is cause forrejection.3.8 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.9 ADDITIONAL R
10、EQUIREMENTSSpeci fic requirements for material and/or manufactured parts shall bespecified on the Engineering drawing, Engineering parts specificationand/o r performance specifications. All critical areas with respect tothese properties shall be clearly designated o n the engineering drawing.3.10 SU
11、PPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent in allcharacteristics to the material upon which approval was originallygranted.ENGINEERING MATERIAL SPECIFICATIONWSD-M9H133-A1/A2/A3/A4WP 3948-b Page 3 of 3 Prior to making any change in the properties, compositio
12、n, construction,colour, processing or labelling of the material originally approvedunder this specification, whether or not such changes affect thematerials ability to meet the specification requirements, the Suppliershall notify Purchasing, Toxicology and the affected MaterialsEnginee ring activity
13、 of the proposed changes and obtain the writtenapproval of the Materials Engineering activity . Test data, test samplesand a new code identification are to be submitted with the request.Substance restrictions imposed by law, regulat ions or Ford, apply to thematerials addressed by this document. The
14、 restrictions are defined inEngineering Material Specification WSS-M99P9999-A1, unless a differentsuffix (e.g. A2 or A3 ) is specified on the engineering document for theapplication.4. APPROVAL OF MATERIALSMaterials defined by this specification must have prior approval by therespo nsible Materials
15、Engineering activity. Suppliers desiring approval oftheir materials shall first obtain an expressi on of interest from the affectedPurchas ing, Design and Materials Engineering activity. Upon request, theSupplier shall submit to the affected Materials Engineering activity acompleted copy of their la
16、boratory test reports, signed by a qualified andauthorized representa tive of the test facility, demonstrating full compliancewith all the requirements of this specification (test results, not nominalvalues), the material designation and code num ber, and test specimens for Fordevaluation. In additi
17、on to meeting the requirements of this specificat ion, thematerials will be assessed for suitability for intended applications as partof the approval process. Upon approval, the material will be added to theEngineering Material Approved Source List.5. GENERAL INFORMATIONThe infor mation given below is provided for clarification and assistance inmeeting the requirements of this specification.5.1 WIDTH As specified on(ASTM D 3774) Engineering Drawings
