GMNA-GM2151M-1995.pdf
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1、I . VND.GM GM,?l,5l,M-ENGL 1995 - 900b379 llll120b3 957 I * I GENERAL MOTORS ENGINEERING STANDARDS I Materials and Processes - General PROTECTIVE FILM - ADHESIVE BACKED GM2151M 1 SCCPE. This specification describes an adhesive- coated plastic film which is used for temporary protection of carpeting
2、or trim panels. 1.1 This material is a thin, transparent, uncolored flexible film or other impervious construction coated with a pressure sensitive adhesive and supplied in roll form or in stacked die- cut sheets, with or without a release liner. The material must be of uniform thickness, free from
3、pin holes and tears, and be nonstaining. Any required printing on the surface of the film must also be nonstaimng to trim and must be permanent for the service life of the iilm Any seams in the material or parts made of the material must be watertight and as strong as the base film. The film must de
4、monstrate satisfactory performance of installation, protection and removal on the intended trim. 2 REFERENCED STANDARDS. GMlOOOM ASTM D882 ASTM D925 ASTM D1003 ASTM 01922 ASTM D2103 PSTC-1 3 MATERIAL TYPES. 3.1 TYPE I. Adhesive uniformly applied to entire area of film. . . . . . . . . . . . . . . .
5、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . zs 10 g mill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3oogmirl spem . . . . . . . . . . . . . . . . .
6、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 g mm 4.3.9 Elongation is not specified; see Part Requirements sec- tion. 3.2 TYPE II. Adhesive applied only to selected areas of film so that adhesive does not contact any surface other than carpet
7、face or other textile material. (This adhesive must not come in contact with vinyl heel pads or other trim surfaces.) 4.3.10 Cold Plexibility. The film must withstand being creased back on itself 180 without cracking at a temperature of -30 C after conditioning for 4 h -30 C. 3.3 TYPE III. Adhesive
8、uniformly applied to entire area of film. These types are unique to Scotchgard treated carpet. 4 REQUIREMENTS. 4.3.11 Shrinkage. Maximum dimensional change shall be 6% after 24 h 70 C. Samples (250 x 250 mm) are coated with talc (both sides) and placed in the oven between two sheets of blotter paper
9、. Samples are to be cooled to room tem- perature prior to measuring. 4.1 RESTRICTBD AND REPORTABLE CHEMICALS (GMlOOOM). All materials supplied to this specification must comply with the requirements listed in GMlOOOM, Restricted and Reportable Chemicals.” 4.4 ADHESIVE. 4.2 Unless otherwise specified
10、, all materials shall be tested under standard conditions, 21 zt 2 C and 50 f 5% RI-I. NOTE: The values of some properties and performance parameters (e.g., tensile strength, tear strength and shrinkage) may depend upon direction along the material sample. Therefore, materials must be tested paralle
11、l and perpendicular to machine direction to determine true minimum and maxi- mum values for conformance to requirements of this specification. 4.4.1 Ijpe. Adhesive shall be pressure sensitive. 4.4.2 Color and Clarity. Adhesive shall be colorless and clear so that the lilm with adhesive applied meets
12、 the require- ments for color and clarity as specified for the film alone (4.3.4). 4.4.3 Apes I and II, Adhesive Performance (PSTC-1). The minimum adhesion shall be 0.1 N/mm and the maximum adhesion shall be 0.6 N/mm after aging in the following envi- ronments (adhesion performance to be evaluated b
13、y applying adhesive coated film to a clean glass plate). 4.3 FILM MATERIAL (WITHOUT ADHESIVE). 4.4.4 Environments. 4.3.1 Composition: Polypropylene, polyethylene or other material which meets the requirements of this specification. 4.3.2 Construction: layer homogeneous, May be (but is not limited to
14、) single multilayer, reinforced, or woven composite. Immediate (30 minutes) at room temperature 24 h after application at room temperature Heat age for 7 days 70 C followed by 16 h room temperature Age 38 C and 95 + 5% RH for 7 days followed by 16 h room temperature 4.3.3 Color. The film shall be co
15、lorless (natural). 4.3.4 Clarity (ASTM D1003, haze reading): 45% max. 4.3.5 Thickness (ASTM D2103). Thiclmess is not specified but must be maintained within +lO% of the thickness of mate- rial which was used to evaluate other properties for material approval. 4.3.6 Surface Treatments. Anti-skid- sur
16、face treatment may. be drawing specified. Surface treatments must not interfere with other performance requirements. 4.3.7 Tensile Suength (ASTM D882). Test specimen, size 25 x 250 mm, jaw separation 120 mm, crosshead speed 120 mm/minute. (If testing film with adhesive, dust sample to pre- vent adhe
17、sion to jaws.) Minimum tensile strength for material thickness as specified and produced shall be 0.8 kN/m. 4.3.8 Tear Strength (ASTM D1922). AUGUST 1995 PAGE 1 2151M Copyright General Motors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not f
18、or Resale, 06/23/2008 22:58:53 MDTNo reproduction or networking permitted without license from IHS -,-,- VND.GM GM2l,5LM-ENGL 1795 W =lDOb37=l OULZClb 4 893 m I I, 1 GENERAL MOTORS ENGINEERING STANDARDS I Materials and Processes - General 1 * PROTEhlVE FILM - ADHESIVE BACKED GM2151M 4.4.5 T&e II& Ad
19、hesive Performance for Scotchgsrd Treated carp?t XC-l). The minimum adhesion shall be 0.04 N/mm and the maximum adhesion shali be 0.3 N/mm after aging in the environments as speciki in 4.4.4. Adhesive performance to be evaluted by applying adhesive coated film to a Scotchgard treated polycarbonate p
20、late. 4.4.5.1 Preparation of Polycarbonate Plate. A smooth and uniform coating of 3M Scotchgard Carpet ProWtor, #PX1380 shall be applied to a clean plate of polycarbonate. The coating shall be applied neat through the use of a finely wound wire coating rod. The coated plate shall be dried in an oven
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