GB/T 8808-1988 English PDF (GBT8808-1988)

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GB/T 8808-1988: Test method for peel force of flexible laminated plastics
GB 8808-1988
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC 678.5/7.076.620.172
GB 8808-88
Test method for peel force of flexible laminated
plastics
ISSUED ON. FEBRUARY 13, 1988
IMPLEMENTED ON. JULY 01, 1988
Issued by. State Bureau of Standard
Table of Contents
1 Subject content... 3 
2 Principle... 3 
3 Test equipment... 3 
4 Sample... 3 
5 State adjustment and test environment... 4 
6 Test speed... 4 
7 Test procedure... 4 
8 Test result expression... 5 
9 Test report... 5 
Additional information... 6 
Test method for peel force of flexible laminated
plastics
1 Subject content
This Standard stipulates the determination for peel force of various flexible
laminated plastics of plastic composite on plastic or other base materials (such
as aluminum foil, paper, fabric).
2 Principle
Perform a T-shaped peeling of the sample of a predetermined width at a
constant speed; measure the average peel force of the composite layer and the
base material.
3 Test equipment
A tensile testing machine that is equipped with a graphic recording device, or
other device that can meet the requirements of this test.
4 Sample
4.1 Sample size
Method A. width of 15.0 ± 0.1 mm, length of 200 mm. It is used in composite
films and the like.
Method B. width of 30.0 ± 0.2 mm, length of 150 mm. It is used in artificial
leather, woven composite bags and the like.
4.2 Sample preparation
Remove both ends of the sample in the width direction by 50 mm; uniformly cut
5 longitudinal and 5 horizontal samples, respectively, along the width direction
of the sample. The composite direction is longitudinal.
Strip the composite layer and the base material in advance along the length
direction of the sample by 50 mm; no obvious damage is allowed to the stripped
part. If the sample is not easy to peel, immerse about 20 mm on one end of the
sample in an appropriate solvent; after the solvent is completely volatilized,
perform the test for peel force. If the composite layer cannot be separated from
the base material after this treatment, the test cannot be carried out.