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YBB 00102003-2015 PDF in English

YBB 00102003-2015 (YBB00102003-2015) PDF English
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YBB 00102003-2015: PDF in English

YBB 00102003-2015
Test for Peel Strength
Issued by. China Food and Drug Administration of PRC
Test for Peel Strength
This Standard applies to the determination of peel strength of all kinds of soft and rigid composite
plastic materials which are composites on plastic or other base materials (such as aluminium foils
and paper).
Peel strength refers to the average peel force of composite layer and base material measured by
carrying out TT-type peeling on a specimen of specified width at a certain speed.
Method for determination
Take an appropriate amount of specimen; remove 50 mm in the width direction at both ends of
specimen; cut 5 specimens of horizontal width, lateral width 15.0 ± 0.1 mm apiece and length
200 mm. The composite direction is the longitudinal direction. Specimens shall be stored for 4 h
in the environment of temperature 23°C ± 2°C and relative humidity 50% ± 5%, and tested under
such conditions.
First peel 50 mm of composite layer and base materials at one end along the length direction of
specimens. The peeled part shall have no visible damage. If it is hard to peel specimens, about
20 mm of one end of specimens may be immersed in an appropriate solvent (usually ethyl acetate
and acetone) for treatment; after the solvent is fully evaporated, the test for peel strength may be
carried out.
If composite layer is not separated from base material through the treatment of the above-
mentioned method, the test shall not be continued and the material is determined to be not
Fix both ends of the peeled part of specimens to the upper and lower clamps of tester, to make
the vertical axis of the peeled part of specimens coincide with the centre line of the upper and
lower clamps, with appropriate tightness. During the test, the unpeeled part and the tensile
direction form a T, see Figure 1. The test speed is 300 mm/min ± 30 mm/min. Record the peel
force curve during the peeling process of specimens.
Test result
Refer to the three typical curves of Figure 2; take an applicable method for evaluation; calculate
the average peel strength of each specimen. Calculate the arithmetic mean value of the
longitudinal and lateral peel strength of each group of specimens as the test result; take two
significant digits, expressed in N/15 mm.
If composite layer is not peelable or composite layer ruptures, its peel strength passes the test.
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.