1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes 2011 09 11 N Status Replaced by WSS-M99P41-A10/A72 G. Eaton, NA 1997 03 19 Revised Revised para 3; Renumbered L. Koth 1996 07 03 Activated L. Koth WP 3948-a Page 1 of 7 LABEL, HOT STAMP TRANSFER - INTERIOR QUA
2、LITY, WSS-M7G7-B2 RIGID SUBSTRATES NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a hot stamp transfer label applied on a carrier film subsequently transferred to a suitable surface area by hot stamp process. 2. APPLICATION This specification was released origin
3、ally for hot stamp labels applied to rigid plastic substrates, e.g. the sun visor surface substrate for information purposes of “Occupant Restraints“ usage, to the steering column surface substrate to indicate the hazard warning light switch location. 3. REQUIREMENTS 3.1 QUALITY SYSTEM REQUIREMENTS
4、Material suppliers and part producers must conform to Quality System Requirements, QS-9000. Material specification requirements are to be used for initial qualification of materials. A Control Plan for ongoing production verification is required. This plan must be reviewed and approved by the releva
5、nt Ford Materials activity and/or Ford Supplier Technical Assistance (STA) prior to production parts submission. Appropriate statistical tools must be used to analyze process/product data and assure consistent processing of the materials. Part producers using this material in their products, must us
6、e Ford approved materials and must conform to a process control plan which has been approved by STA and/or the relevant Materials Activity. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplie
7、d to this specification. The IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested
8、 under the same conditions. ENGINEERING MATERIAL SPECIFICATION WSS-M7G7-B2 WP 3948-b Page 2 of 7 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h pr
9、ior to testing and tested under the same conditions unless otherwise specified. For samples subjected to specified conditioning environments other than 23 C and 50 % R.H., tests shall be completed within 4 h after removal from the conditioning environment, unless otherwise noted. All tests shall be
10、performed on labels bonded to the appropriate substrate, unless otherwise noted. 3.4 APPEARANCE The bonded labels shall be free of streaks, blisters, wrinkles, ragged edges and any other surface imperfections which will make them unsuitable for the intended usage. The design and color shall be speci
11、fied on the engineering drawing. 3.5 PREPARATION OF TEST SPECIMENS Test panels with applied film or label shall be conditioned for 24 h at 23 +/- 2 C and 50 % relative humidity prior to exposure. Tests shall be completed within 4 h after removal from the conditioning environment, unless otherwise no
12、ted. 3.5.1 Substrate Typical substrates include A.B.C. (ESB-M4D483-A1 type), polycarbonate (WSB-M4D100-A type) and polypropylene (ESB-M4D500-A type). All substrate/label combinations are approved separately. Use all substrates appropriate to the requested approval. 3.5.2 Substrate Preparation To ens
13、ure that all test specimens are free of mold release agents, fingerprints, oils, dirt and any other detrimental surface contamination, substrates may be wiped with IPA (50 % v/v) prior to hot stamp application. 3.5.3 Heat Transfer Process The application of the labels to all test specimens shall be
14、accomplished in a production representative fashion. The application parameters shall be documented and submitted as part of the total data package. ENGINEERING MATERIAL SPECIFICATION WSS-M7G7-B2 WP 3948-b Page 3 of 7 3.6 RESISTANCE PROPERTIES GENERAL REQUIREMENTS: After each of the resistance prope
15、rties exposures, the label must not show evidence of delamination, loss of printing or legibility, overall staining, loss of adhesion, curling of edges, blistering, checking, cracking or any other effect which would detract from its proper function or appearance. Substrate degradation/distortion wil
16、l be evaluated separately and is not cause for rejection of the label provided there is no label delamination or loss of legibility. Note: Legibility to be judged at a viewing distance of approximately 18 inches. 3.6.1 Humidity Resistance 14 days at 38 +/- 1 C and 95 - 100 % relative humidity. 3.6.2
17、 Environmental Cycling Resistance 10 cycles, each cycle shall consist of the following: . 4 h at 100 +/- 2 C . 4 h at 38 +/- 1 C and 95 - 100 % R.H. . 16 h at - 40 +/- 1 C 3.6.3 Resistance to Heat Aging, min Rating 4 (7 days at 100 +/- 2 C, AATCC Evaluation Procedure 1) 3.6.4 Heat Resistance (30 min
18、utes at 120 +/- 2 C) Shall withstand a simulated paint repair bake. 3.6.5 Resistance to Fade, min 3.6.5.1 Xenon Arc Weatherometer (SAE J1885, AATCC Evaluation Procedure 1) 488.8 kJ/m2 Rating 4 This is a standard requirement. If the label is to be applied to a severe sunload area such as the top of t
19、he instrument panel or steering wheel area, the exposure level may be increased consistent with the part requirement. 3.6.5.2 12 Months Florida Rating 4 (FLTM BI 160-01, 5 deg south, under glass, AATCC Evaluation Procedure 1) 3.6.6 Crocking Rating 4 Wet and Dry, min ENGINEERING MATERIAL SPECIFICATIO
20、N WSS-M7G7-B2 WP 3948-b Page 4 of 7 (FLTM BN 107-01, using AATCC Evaluating Procedure 3) ENGINEERING MATERIAL SPECIFICATION WSS-M7G7-B2 WP 3948-b Page 5 of 7 3.6.7 Migration Staining None (FLTM BN 103-01) No evidence of injurious exudation, adhesion (tackiness), separation or color transfer when pla
21、ced face to face with the standard white vinyl test material (M1F Series). 3.6.8 Perspiration, min Rating 4, (FLTM BI 113-03, AATCC Evaluation No Softening Procedure 3) 1 cycle. Rub test area with fingernail to detect softening. 3.6.9 Abrasion Resistance, min 500 cycles (FLTM BN 108-02, CS-10 wheels
22、, 500 g load) Light amount of wear is not cause for rejection; however label must remain legible. 3.6.10 Resistance to Scuffing 100 cycles (FLTM BN 108-04, 0.9 kg load, A head) Light amount of wear is not cause for rejection; however label must remain legible and there must be no edge lifting or vis
23、ible substrate. 3.6.11 Soiling and Cleanability, min Rating 4 (FLTM BN 112-08) Test procedure to be modified to suit, i.e. label to be centered in the 57 mm diameter test area. 3.6.12 Removal Resistance No Removal Test Solutions: . Triple Cleaner: EOAZ-19526-AA . Glass Cleaner .Isopropyl Alcohol (50
24、/50 mixture with deionized water) Test Method: Prepare a separate specimen for each fluid. Wipe test specimens 10 to 15 times with each test fluid. 3.7 FLAMMABILITY, max 100 mm/minute (SAE J369/ISO 3795) Tests shall be conducted with the label 100 % bonded to the substrate to form a material composi
25、te. ENGINEERING MATERIAL SPECIFICATION WSS-M7G7-B2 WP 3948-b Page 6 of 7 3.8 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 60 Formation of clear film, droplets or crystals is cause for rejection. Note: Test to be run on the film by itself.
26、3.9 ODOR, max Rating 2 (SAE J1351) Note: Test to be run on the film by itself. 3.10 LABEL ADHESIONNo label delamination (BI 106-01, Part “B“ omit scribe lines)or loss of legibility Test Method: Place a strip of 3M #898 25 mm wide tape along the entire bottom edge of the label with 16 +/- 2 mm of the
27、 tape width to be on the label. Apply the tape with moderate thumb pressure to the label and substrate. Remove the tape by pulling one end at a 90 degree angle with a quick snap. The label/substrate composites shall meet the label adhesion requirements as received and after the environmental conditi
28、oning defined below. Samples must be tested between 1 and 4 hours after removal from exposure conditions unless otherwise noted. . Original . Heat Aging 7 days at 100 +/- 2 C 14 days at 100 +/- 2 C . Humidity 14 days at 38 C and 95 % relative humidity . Cycle Test (10 cycles) Each cycle shall consis
29、t of the following: . 4 h at 100 +/- 2 C . 4 h at 38 +/- 1 C and 95 - 100 % relative humidity . 16 h at - 40 +/- 1 C . Resistance to Fade, min (SAE J1885) 488.8 kJ/m2 ENGINEERING MATERIAL SPECIFICATION WSS-M7G7-B2 WP 3948-b Page 7 of 7 3.11 FINISHED PARTS 3.11.1 Quality The quality required is that
30、obtainable with the best commercial practice. 3.11.1.1 Cleanliness All substrates to be covered by the film shall be clean in keeping with good commercial practice. Oil, grease, dust, and other foreign materials which would affect the adhesion of the film shall be removed prior to material applicati
31、on. 3.11.1.2 Appearance Parts shall match master samples approved by Design Center and initial samples approved by Quality Control for: . Color and Uniformity . Smoothness (absence of blisters) . Absence of scratches and tool marks 3.12 ADDITIONAL REQUIREMENTS Specific requirements for material and/
32、or manufactured parts shall be specified on the Engineering drawing, Engineering parts specification and/or performance specification. All critical areas with respect to these properties shall be clearly designated on the engineering drawing. 3.13 FUNCTIONAL APPROVAL Materials being evaluated for ap
33、proval to this specification shall be subjected to a production trial. Functional trial results must be approved by the affected assembly operation and Design Engineering. Results shall be made available to Materials Engineering prior to material approval and release. ENGINEERING MATERIAL SPECIFICAT
34、ION WSS-M7G7-B2 WP 3948-b Page 8 of 7 3.14 SUPPLIERS RESPONSIBILITY The material designation, code number, and basic construction must be part of the total data package. All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was ori
35、ginally granted. Prior to making any change in the properties, composition, construction, color, processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall no
36、tify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law
37、, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Materials Specification WSS-M99P9999-A1. 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering activity.
38、Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity a completed copy of their laboratory test report
39、s, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of this specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on its performance to this specification and on an assessment of suitability for intended processes and/or applications. Upon approval, the material will be added to the Engineering Material Approved Source List.
