1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1992 03 02 EP00E01076262000 Released KW conc. J.SchultWP 3948-a Page 1 of 5 TAPE, PERFORMANCE, PRESSURE SENSITIVE ADHESIVE, WSK-M11P50-ATWO SIDED, EXTERIOR, BUMPER INSERT1. SCOPEThis specification d
2、efines perf ormance requirements of adhesive foam tapesused for exterior automotive applications. The tapes have two sides withtwo side pressure sensitive adhesive and are protected by either releasepaper or polymer liner.The tap es may be used in combination with a suitable primer which wouldspecif
3、ied separately on the Engineering drawing.2. APPLICATIONThis s pecification was released originally to define adhesion performancerequirements for automotive bumper inserts.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStanda rd Q-101. A mutu
4、ally acceptable Control Plan as describedth erein 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 CONDITIONING AND TEST CONDITIONSAll test values indicated herein ar
5、e 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.3.3. PREPARATION OF TEST SPECIMENSTest Specimens shall be prepared from production bumper i
6、nserts andeithe r unpainted bumper parts or painted parts, freshly preparedusing current approved production paint materials.The sur faces to be bonded shall be cleaned with isopropanol/water(1:1) and dry wiped prior to applying the tape. The Tape shall beapplied to the weatherstrip sample surface w
7、ith the liner intact.ENGINEERING MATERIAL SPECIFICATIONWSK-M11P50-AWP 3948-b Page 2 of 5 Tes t Specimens shall be aged for 72 h at room temperature prior totesting unless otherwise specified.Usage of a primer shall be noted in the Initial Sample Report.3.4 AGING CONDITIONSEx pose test specimens per
8、3.3 to each of the following conditionsbefore testing per para 3.5.3.4.1 Humidity Aging14 d at 38 +/- 2 C, 98 +/- 2 % RH3.4.2 Heat Aging14 d at 90 C +/- 2 C;Reconditioning: 1 h at 23 C and 50 +/- 5 % RH3.4.3 Paint Repair Oven30 minutes at 120 C +/- 2 C;Reconditioning: 1 h at 23 C and 50 +/- 5 % RH3.
9、4.4 Environmental Cycling(FLTM BQ 104-07, Procedure 5) 3.4.5 Immersion: Wax/Dewaxing FluidUse current production waxing and dewaxing compounds asfollow s: Immerse 1 minute in protective wax compound andcondition f or 72 h at 23 +/- 2 C. Remove wax coating byim mersing 1 h 60 +/- 2 C into dewaxing co
10、mpound. Allow tocool down to room temperature.3.4.6 Immersion: Fuel C(ISO 1817, liquid 4, 1 h at 23 +/- 2 C)3.4.7 Accelerated Weathering 2000 h(SAE J1960)3.4.8 Florida Exposure 2 years(FLTM BI 160-01, 5 deg south, directweathering)Thi s applies to Initial Approval only. Initial approvalswill b e bas
11、ed on accelerated weathering results, pendingFlorida results for final approval.Note: In case of diffe rences between the results of Floridaexpo sure and accelerated weathering, the Florida resultsshall take precedence.ENGINEERING MATERIAL SPECIFICATIONWSK-M11P50-AWP 3948-b Page 3 of 5 3.5 ADHESIONA
12、dh esion shall be tested after aging per para 3.4. Tests shall beperformed within 5 minu tes after end of the exposure (except 3.4.8).Report type of failure (cohesive/adhesive failure as well assubstrate failure) in the Initial Sample Report.The figures required below are only relevant if adhesion o
13、f tape tosubstrate is greater th an the internal strength of the bumper insertmateri al. Influence of substrate material to test results, e.g.plasticizer migration, shall not be reason for rejection of adhesivetape, i f the tape meets all specification requirements on an inertsubst rate. These resul
14、ts must be confirmed in the initial samplereport of the tape.3.5.1 90 Degree Peel Adhesion: Tape to Bumper Insert(FLTM BU 112-02, Method A)No separation between tape and aluminum foil.Original Value, min 17 N/cm(72 h at 23 +/- 2 C) Must be within +/- 10 ofinitial sampleAfter Aging, min3.5.1.1 Humidi
15、ty per 3.4.1, min 100 %3.5.1.2 Heat Storage per 3.4.2, min 100 %3.5.1.3 Paint Repair Oven per 3.4.3, min 100 %3.5.1.4 Environmental C. per 3.4.4, min 100 %3.5.1.5 Wax/Dewaxing per 3.4.5, min 60 %3.5.1.6 Fuel C Immersion per 3.4.6, min 60 %3.5.1.7 Acc. Weathering per 3.4.7, min 60 %3.5.1.8 Florida We
16、athering per 3.4.8, min 60 %3.5.2 90 Degree Peel Adhesion: Tape toBumper Surface(FLTM BU 112-02, Method A)No separation between tape and aluminum foil.Original Value, min 15 N/cm(72 h at 23 +/- 2 C) Must be within +/- 10 % ofinitial sampleAfter Aging, min3.5.2.1 Humidity per 3.4.1, min 100 %3.5.2.2
17、Heat Storage per 3.4.2, min 100 %3.5.2.3 Paint Repair Oven per 3.4.3, min 100 %3.5.2.4 Environmental C. per 3.4.4, min 100 %3.5.2.5 Wax/Dewaxing per 3.4.5, min 60 %3.5.2.6 Fuel C Immersion per 3.4.6, min 60 %3.5.2.7 Acc. Weathering per 3.4.7, min 60 %3.5.2.8 Florida Weathering per 3.4.8, min 60 %ENG
18、INEERING MATERIAL SPECIFICATIONWSK-M11P50-AWP 3948-b Page 4 of 5 3.6 STATIC SHEAR: Tape to Painted Surface(FLTM BU 101-06, Method B)At 70 C, 100 h testing time 1000 gAt 120 C, 30 minutes testing time 250 g3.7 COLD ADHESION TEST No delamination(FLTM BU 109-02, after 4 h at - 40 C)3.8 VISUAL INSPECTIO
19、NThere shall be no staining, curling or any other failures after agingper para 3.4.3.9 STORAGE AND SHIPPING STABILITYPlastic applications with the tape applied shall be stored for3 months at temperatures between 5 and 32 C as w ell as for 3 weeks at70 C.Af ter the storage, the tape shall meet all re
20、quirements of thisspecification.3.10 LINER REMOVAL, max 6.0 N/cmASTM D 1000, except app ly the unlined adhesive side of the tape to acl ean metal panel with light finger contact and no added rollerweight. Measure the fo rce required to peel the liner from the tape.3.11 INITIAL ADHESIONThe initial ad
21、hesion of the adhesive tape immediately after bondingshall be sufficient that the mounted part can withstand normalhandling without damage.3.12 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasorigin
22、ally granted.Pr ior to making any changes in the properties, composition,co nstruction, color, processing or labelling 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 not
23、ify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials Engineeringactivity. Test data, test samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regu
24、lations or Ford isap plicable to the materials addressed by this document. Therestrictions are defined in Engineering Material SpecificationWSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) isspecified on the engineering document for the application.ENGINEERING MATERIAL SPECIFICATIONWSK-M1
25、1P50-AWP 3948-b Page 5 of 5 4. APPROVAL OF MATERIALSThis specification is intended to define the performance and/or propertiesof finished parts or systems of combined materials. An EngineeringMaterial Approved Source listin g is not applicable for this specification.Produc t Engineering materials re
26、ferenced in this document and/or theaffected engineering drawing, which require prior Engine ering approval, aresh own in the Engineering Material Approved Source List under thespecification cited.5. GENERAL INFORMATIONThe information below is provided for clarification and assistance inmeeting the
27、requirements of this specification.5.1 RECOMMENDATIONS FOR MOUNTING. Only apply tape to absolutely clean and dry surface. Mating surface should be matched (contoured or parallel) to ensure100 % contact of the bond area. Once tape is applied to part and has been bonded and for any reasonremoved, it shall not be reused. If the adhesive surface of the tape becomes soiled, the tape-backedpart shall not be used unless tape is replaced. The adhesive side of the tape shall not be touched or handled oncethe release liner has been removed.
