GMNA-9985362A-2008.pdf
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1、 ENGINEERING STANDARDS Material Specification Adhesives 9985362 Adhesive, Transfer Film, Positioning Copyright 2008 General Motors Corporation All Rights Reserved July 2008 Originating Department: North American Engineering Standards Page 1 of 2 1 Scope 1.1 Material Description. A form of pressure s
2、ensitive, acrylic adhesive dry film with controlled cohesive strength and protected with silicone release paper. This material will adhere satisfactorily for specific transfer to most contacted shapes. It may be applied to painted surfaces, Kraft paper, various metals, plated surfaces, glass, rubber
3、, foamed or cellular materials, fabrics, vinyl, polyethylene, polypropylene, urethane and other low energy or difficult to bond plastics. 1.1.1 Material shall require no moisture, heat or other preparation prior to or after application to clean dry surfaces, and shall contain no supporting member su
4、ch as film or tissue. Maximum bond strength shall be attained immediately. 1.2 Typical Applications. Bonding to painted surfaces, Kraft paper, various metals, plated surfaces, glass, rubber, foamed or cellular materials, fabrics, vinyl, polyethylene, polypropylene, urethane and other low energy or d
5、ifficult to bond plastics. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D3330 ASTM D3652 2.2 GM Standards/Specifications. GM9010P GMW3059 GMW3001 GMW3221 3 Requirements 3.1 Form and Quality. 3.1.1 Shelf L
6、ife. Material shall pass all requirements of this specification after aging material in the original container 90 days at 35C. 3.1.2 Size of product shall conform to the following: 3.1.2.1 Thickness of adhesive (Item 3.2.3), 0.04 mm nominal. 3.1.2.2 Thickness of liner, 0.08 mm nominal. 3.1.2.3 Width
7、: 150 mm nominal. 3.1.2.4 Length: 5.0 m unless otherwise specified by the purchaser. 3.1.3 Packaging. Tape to be furnished in evenly and uniformly wound rolls, adhesive side in, on suitable cores with a silicone treated paper protective covering easily removable with no separation of material. 3.2 T
8、est Procedures. 3.2.1 Sample Conditioning. All samples are to be conditioned prior to each requirement test to GMW3221, Code A. 3.2.2 Specimen Preparation. Each specimen to be used for testing in paragraph 3.2.4 and 3.2.5 shall be prepared in the following manner. Laminate the adhesive to a suitable
9、 size strip of 0.03 mm polyester film. Prior to conducting the actual test remove the liner. This gives a strip of tape with the adhesive on one side of a polyester backing. 3.2.3 Thickness. The adhesive thickness shall be determined according to ASTM D3652. The specimen shall be formed from a strip
10、 of the tape (adhesive with liner) folded over on itself, adhesive to adhesive for which the thickness is determined. Then, with the adhesive removed from the liner, the thickness of the doubled over liner is to be determined in the same place. The adhesive film thickness is calculated by subtractin
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