1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 12 13 Revised and Retyped was: 9 pages1976 09 03 B/CP7071 TP Revised sheet 2 and 31970 03 05 AC/64339/UP Information ReleasedWP 3948-a Page 1 of 4 PRESSURE SENSITIVE CLOTH TAPE, WATERPROOF S-M3G4616-A1
2、. SCOPEThe material defined by this sp ecification is a plastic coated cloth tape,single coated with a pressure sensitive adhesive.2. APPLICATIONThis mat erial is generally used to cover holes of door inner panels tomoisture penetration and/or as specified on Engineering Drawing.3. REQUIREMENTS3.1 B
3、ACKING MATERIAL Plastic coated cloth3.1.1 Thickness 215 +/- 25 micrometre or asspecified on Engineering Drawing3.2 ADHESIVE Pressure sensitive adhesive3.2.1 Thickness 60 +/- 15 micrometre or asspecified on Engineering Drawing3.3 TAPE(Material on roll)3.3.1 Unwind Pull, max 1.2 kgf/19 mm widthTest Me
4、thod:1) Place co re of tape around a fixture which will allow itto revolve.2) Attach th e free end of the tape to a 2 kgf max limitspring scale.3) Pull the tape from its roll at the rate of 300 mm/minute.4) Mea sure and record the unwind pull as a direct scalereading.ENGINEERING MATERIAL SPECIFICATI
5、ONS-M3G4616-AWP 3948-b Page 2 of 4 3.3.2 Tear Strength, min 0.8 kgf(FLTM EU-BN 50-2, except separation rate300 mm/minute and clause 1 to be asfollowing)Take five tape strips (300 mm in length), make a cut 50 mm inthe cen ter of the narrow side of the test specimen in theyarn direction.3.3.3 Tensile
6、Strength and ElongationTest Method:1) Take five 200 mm long tape strips.2) Mark o ff a gauge length of 100 mm in the middle of eachspecimen. Avoid damaging the specimen.3) Insert the specimen into the tensile machine and set therate of separation of the jaws at 300 mm/minute.4) Record the max load n
7、ecessary to break the specimen.5) Record the elongation at break of the specimen using theslide gauge.3.3.3.1 Tensile Strength, min 8 kgf/cm width3.3.3.2 Elongation, min 6 %3.3.4 Moisture Penetration, max 10 mgTest Method:1) Take a te st tube of 17 mm diameter. Fill with 10 mLdistilled water. Close
8、the opening with a single pieceof tape.2) Place the test tube in a desiccator.3) Weigh the test tube after 24 hours to nearest 0.5 mg.4) Place in a desiccator again for 24 hours. Weigh the testtube after this time and determine the loss in weightin mg.3.3.5 Shear Strength(FLTM EU-BU 51-1, Method A a
9、, sketch 4,tape 19 mm wide, 60 mm long, separationrate: 300 mm/minute)ENGINEERING MATERIAL SPECIFICATIONS-M3G4616-AWP 3948-b Page 3 of 4 3.3.5.1 Original, min 7 kgf/cm2(10 minutes after bonding)3.3.5.2 After Ageing, max - 10 % (based onoriginal value)14 days, 70 +/- 1 C, 1 hour at room temperature.3
10、.3.5.3 After Humidity Ageing, max - 10 % (based onoriginal value)24 hours, 38 +/- 2 C, 98 +/- 2 % relative humi dity.3.3.6 Peel Strength(FLTM EU-BU 51-1, Method B1, Fig. 8,tape 19 mm in width, 250 mm long,separation rate: 300 mm/minute)3.3.6.1 Original, min 0.3 kgf/19 mm width10 minutes after bondin
11、g.3.3.6.2 After Ageing, max - 10 % (based onoriginal value)14 days, 70 +/- 2 C, 1 hour at room temperature.3.3.6.3 After Humidity Ageing, max - 10 % (based onoriginal value)24 hours, 38 +/- 2 C, 98 +/- 2 % relative humi dity.3.4 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification mu
12、st 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 specification, whether or not suchchange s affect t
13、he 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. Test data, t est samples and a new code identifica
14、tion 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 Materials Specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONS-M3G4616-AWP 3948-b Page 4 of 4
15、 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 Purchasing, Design and Materials Engineering act
16、ivity. 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 all the requirements of this specification (test
17、results, 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 a
18、l, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe information given below is provided for clarification and assistancein meeting the requirements of this specification.5.1 STORAGE STABILITY 6 months(From date of receipt at Ford Motor Company)5.2
19、STORAGE TEMPERATURE 5 C to 28 C5.3 SURFACE CONDITIONTo achieve optimum adhesion, the panel surface m ust be completely dryand free of dirt, oil, grease and similar foreign matter.5.4 TAPE COLORSThe tape colors shall be specified as follows:S-M3G4616-A A BlackB WhiteC Gray5.5 WIDTH OF TAPEThe width of tape shall be specified by an additional suffix to thebase specification number as follows:Suffix Suffix06 for 6 mm width 25 for 25 mm width09 for 9 mm width 30 for 30 mm width12 for 12 mm width 38 for 38 mm width15 for 15 mm width 50 for 50 mm width19 for 19 mm width 60 for 60 mm width
