1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 07 16 NB00I10043054340 Released D.Henrickson AJS BCFWP 3948-a Page 1 of 4 TAPE, FASTENER, NYLON LOOP, KNITTED, UNNAPPED WSB-M7H54-A1. SCOPEThe ma terial defined by this specification is an unnapped, kn
2、itted, nylonloop tape fastener with polyester backing.2. APPLICATIONThis specification was released originally for material sewn to seam jointson the interior of seat trim covers. This loop fastener joins togetherwith a hook fastener secured to the foam seat cushion pad.3. REQUIREMENTS3.1 STATISTICA
3、L 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 variation in the final produc
4、t 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 thermograms established for i nitial approval shallconst itute the refer
5、ence 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 teria
6、l 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.ENGINEERING MATERIAL SPECIFICATIONWSB-M7H54-AWP 3948-b Page 2 of 4 3.4 CONSTRUCTION AND YARN DESCRIPTION(ASTM
7、D 3887 and ASTM D 1244)The loop tape is knit with uncut upright loops w hich provide a matingengagement for the hook tape.3.4.1 Loop 22 tex Nylon 65 rows/cm3.4.2 BackingWarp 33 tex Texturizedpolyester13 picks/cmFill 33 tex Texturizedpolyester6 rows/cm3.5 BREAKING STRENGTH, warp only, min 10 N/mm wid
8、th(ASTM D 5034, 305 mm/minutejaw speed, avg. of 5 samples)Test samples for paragraphs 3.6, 3.7, and 3.8 ar e prepared by joining25 mm w ide strips of material and ESB-M7H4-A1 or equivalent hookfastener as noted.3.6 SHEAR STRENGTH, min 45 kPa(ASTM D 5034, with 50 mm hookto loop overlay, 305 mm/minute
9、 jawspeed, avg. of 5 samples)3.7 PEEL STRENGTH, min 150 N/m width(ASTM D 413, Machine method, jawspeed 305 mm/minute, avg. of 5samples)3.8 TENSION STRENGTH, min 35 kPa(Avg. of 5 samples)Test Method: Staple 25 x 75 mm pieces of materi al and ESB-M7H4-A1 oreq uivalent hook material to flat foundation
10、boards. Mate these 2pieces together with a 36 N roller so that a 25 x 25 mm area of thehook and loop is in contact with one another. S eparate these samplesin a tensile testing machine with a jaw speed of 305 mm/minute, andthe direction of load perpendicular to the plane of the samples.3.9 SHRINKAGE
11、 warp, max 3.0 %(FLTM BN 105-01)ENGINEERING MATERIAL SPECIFICATIONWSB-M7H54-AWP 3948-b Page 3 of 4 3.10 FOGGING(FLTM BO 116-03)Fog Number, min 60Formati on of a clear film, droplets or crystals is cause forrejection.3.11 FUNCTIONAL APPROVALMaterials being evaluated for approval to this s pecificati
12、on shall besubject ed to a production trial. Functional trial results must beapproved by the affected assembly operation and Design Engineering.Results shall be made available to the responsible MaterialsEngineering Activity prior to material approval and release.3.12 ADDITIONAL REQUIREMENTSSpecific
13、 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 respectto these properties shall be clearly designated on the engineeringdrawing.3.13 SUPPLIERS RESPONSIBILIT
14、YAll 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,constr uction, color, processing or labeling of the materialorig inally approved under this spe
15、cification, 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 Materials Engineeringactivity. Te
16、st 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 WSS-M99P9999-A1.ENGINEERING MATERIA
17、L SPECIFICATIONWSB-M7H54-AWP 3948-b Page 4 of 4 4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffec ted P
18、urchasing, 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 representative of the test faci lity, demonstratingful l compliance with a
19、ll 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 i ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.
