1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 08 14 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.19, 3.23, 4 1994 11 28 Released NB00I10043054399 A.W.B. K.P.M. Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 6 TAPE, POLYETHYLENE, PRESSURE SE
2、NSITIVE, WSB-M3G224-A INTERIOR-EXTERIOR 1. SCOPE The material defined by this specification is a polyethylene film composite with a clear acrylic pressure sensitive adhesive which is protected by a release liner. 2. APPLICATION This specification was originally released for material used as a fasten
3、er hole patch for interior trim applications (ie. door jamb, instrument panels) and low abrasion areas. Other applications include protective seal against wind noise and water leakage for outside mirror bracket assemblies. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material s
4、uppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 GREEN STRENGTH The tape shall develop sufficient adhesion to permit normal handling immediately after application. 3.5 FILM PROPERTIES 3.5.1 Color Clear 3.5.2 Tape Dimensions
5、 As specified on engineering drawing 3.5.3 Tape Thickness (ASTM D 1000) Tape plus adhesive, min 0.28 mm Release liner, min 0.11 mm 3.5.4 Tensile Strength, min 3.2 N/mm width (ASTM D 1000) 3.5.5 Elongation, min 400% (ASTM D 1000) ENGINEERING MATERIAL SPECIFICATION WSB-M3G224-A Printed copies are unco
6、ntrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 6 3.6 PREPARATION OF TEST SPECIMENS Substrate test specimens may be obtained from slab stock and/or unpainted production parts. Except where otherwise noted, tests shall be conducted on test panels for the substrate listed below by app
7、lying the film per the following procedure: Clean test panels with a 50/50 blend (volume) of isopropyl alcohol and water and allow to air dry. Peel the liner from the film in a smooth continuous motion. Do not peel the film from the liner. Position the tape on the test substrate. Using the roller de
8、scribed in ASTM D 1000 with no additional pressure, pass the roller over the full length of the tape once in each direction. Test samples with applied tape shall be conditioned for 48 h at 23 +/- 2 C and 50% relative humidity prior to exposure. Tests shall be completed within 4 h after removal from
9、the conditioning environment unless otherwise specified. . Usage of a primer, if required, shall be noted in the test data package. 3.6.1 Substrate for Test Specimens 3.6.1.1 Polycarbonate, Low Temperature Impact Resistant (WSK-M4D761-A or equivalent) 3.6.1.2 Current Production Paint Systems (FLTM B
10、I 103-02, Method C) Note: For approval of use of this film on other substrates, the supplier must submit complete test data and tested samples to the Materials Engineering Activity, prior to approval. 3.7 ADHESION (ASTM D 1000, Method A, except determine adhesion to substrates listed in para 3.6.1)
11、The adhesive shall produce a durable bond between the film and the substrate surface with the following minimum peel stengths: 3.7.1 As Received (Conditioned for 48 h at 23 +/- 2 C and 50 +/- 5% relative humidity) 3.7.1.1 Plastic Substrate 200 N/m 3.7.1.2 Current Production Paint Systems 350 N/m 3.7
12、.2 Aged 3.7.2.1 Plastic Substrate 300 N/m 3.7.2.2 Current Production Paint Systems 526 N/m ENGINEERING MATERIAL SPECIFICATION WSB-M3G224-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 6 Test Method: Expose duplicate samples to each of the following conditio
13、ns: 5 cycles consisting of 4 h at 70 +/- 1 C, 4 h at 38 +/- 2 C and 95 - 100% relative humidity, and 16 h at -30 +/- 2 C 10 cycles consisting of 4 h at 70 +/- 1 C, 4 h at 38 +/- 2 C and 95 - 100% relative humidity, and 16 h at -30 +/- 2 C (painted panels only) 240 h water immersion per FLTM BI 104-0
14、1 (painted panels only) 240 h salt spray per FLTM BI 103-01 (panted panels only) 400 h exterior xenon arc weatherometer (painted panels only) 3.8 RESISTANCE PROPERTIES After each of the following exposures, the film must not show evidence of edge curling, delamination, loss of adhesion or any other
15、effect which would detract from its proper function or appearance. Note: If the substrate material delaminates, shrinks or deforms under the following conditions, it is not a cause for rejection providing the film does not delaminate. 3.8.1 Humidity Resistance Test Method: Condition the test panel i
16、n a humidity cabinet for 7 days at 38 +/- 2 C and 95 - 100% relative humidity. 3.8.2 Heat and Cold Resistance Test Method: Condition the test panel in an oven for 2 h at 100 +/- 2 C and examine. Then cool for 2 h at -30 +/- 2 C and reexamine. Repeat for 5 cycles. 3.8.3 Heat Resistance Test Method: C
17、ondition the test panel in an oven for 30 minutes at 120 +/- 2 C. 3.8.4 Water Immersion 240 h (FLTM BI 104-01, painted panels only) 3.8.5 Salt Spray Resistance 240 h (FLTM BI 103-01, painted panels only) 3.9 HEAT AGING, min Rating 4 After exposure for 7 days at 80 +/- 2 C, the material shall not sho
18、w evidence of edge curling, exhibit staining or color tone change in excess of the specified rating of the AATCC Gray Scale for Evaluation Change in color (10 step). 3.10 SHRINKAGE, max 1.0% No evidence of cracking, checking, or color change after exposure in a mechanical convection oven for 30 minu
19、tes at 120 C. The test shall be conducted 2 hours after application of a 25 x 125 mm strip of the material to a test panel. ENGINEERING MATERIAL SPECIFICATION WSB-M3G224-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 6 3.11 FOGGING (FLTM BO 116-03) Fog Numb
20、er, min 60 Formation of a clear film, droplets or crystals is cause for rejection. Film to be tested with adhesive side up after removal of release liner. 3.12 ABRASION RESISTANCE, min 1500 cycles (FLTM BN 108-02, CS-10 wheels, 1000 g load and backed with S-37 specimen mounting sheet) The material s
21、hall not exhibit evidence of wear-through in the abraded area. Production material shall be equal to or better than that exhibited by the material approved for production by the responsible Materials Engineering Activity. 3.13 SCUFFING RESISTANCE, min 1500 cycles (FLTM BN 108-04, “A“ head, 900 g loa
22、d and backed with S-37 specimen mounting sheet) There shall be no evidence of cracking or peeling in the scuffing area. Production material shall be equal to or better than that exhibited by the material approved for production by the responsible Materials Engineering Activity. 3.14 RESISTANCE TO FA
23、DE, min (ISO 105-A02/SAE J1885, AATCC Evaluation Procedure 1) 225.6 kJ/m2 Rating 4 After exposure, the material shall show no change in color tone (hue) or gloss. 3.15 EXTERIOR XENON WEATHEROMETER RESISTANCE, min (SAE J1960, 70 +/- 2 C black panel temperature, ISO 105-A02/AATCC Evaluation Procedure
24、1, painted panels only) 400 h Rating 4 After exposure, the material shall show no change in color tone (hue) or gloss. 3.16 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute Perform the test with the adhesive side of the tape bonded to aluminum foil. 3.17 FILM STRENGTH During installatio
25、n, the film must not break, tear, or deface. The release liner shall not tear or delaminate while being removed from the film. 3.18 ODOR, max Rating 2 (SAE J1351) ENGINEERING MATERIAL SPECIFICATION WSB-M3G224-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 6
26、 3.20 FUNCTIONAL APPROVAL Materials being evaluated for approval 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 mate
27、rial approval and release. 3.21 STORAGE STABILITY The material shall be stored at temperatures below 40 C away from all sources of heat and sunlight. Heat greatly accelerates aging. Under these storage conditions, the minimum shelf life of the material shall be 12 months. Adequate conditioning permi
28、ts the material to obtain its optimum application properties. 3.22 FINISHED PARTS 3.22.1 Quality The quality required is that obtainable with the best commercial practice. 3.22.1.1 Cleanliness All substrates to be covered by the film shall be clean in keeping with good commercial practice. Oil, grea
29、se, dust, and other foreign materials which would affect the adhesion of the film shall be removed prior to material application. 3.22.1.2 Appearance Parts shall match master samples approved by Design Center and initial samples approved by Quality Control for: Color and Uniformity Smoothness (absen
30、ce of blisters) Absence of scratches and tool marks 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 STORAGE STABILITY (From date of receipt at Ford Motor Company) 12 Months Temperature Range 10 - 2
31、8 C Humidity Range 10 - 80% R.H. 5.2 For information on currently approved fluids used in para 3.6 of this specification contact: Materials Laboratory 15/GM-DO1-D Fluids Materials Section Research & Engineering Center Coolants/Greases Ford Motor Company Ltd. Engine Engineering Laindon, Basildon P.O.
32、 Box 2053 Essex SS15 6EE, England 21500 Oakwood Blvd. Dearborn, MI 48121 U.S.A. ENGINEERING MATERIAL SPECIFICATION WSB-M3G224-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 6 of 6 Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd. Princes Highway, Norlane Victoria 3214, Australia
