QB/T 1130-1991 English PDF (QBT1130-1991)

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QB/T 1130-1991: Plastics Angle Tear Performance Test Method
QB/T 1130-1991
QB
LIGHT INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
Plastics Angle Tear Performance Test Method
APPROVED ON: JUNE 04, 1991
IMPLEMENTED ON: JANUARY 01, 1992
Approved by: Ministry of Light Industry of PRC
Table of Contents
1 Theme Content and Applicable Scope ... 3
2 Normative References ... 3
3 Principle ... 3
4 Test Apparatus ... 3
5 Specimen ... 3
6 Standard Environment for Condition Adjustment and Test of Specimen ... 4
7 Test Procedures ... 4
8 Representation of the Results ... 5
9 Test Report ... 5
Additional Information: ... 6
Plastics Angle Tear Performance Test Method
1 Theme Content and Applicable Scope
This Standard specifies the test method for the right-angle tear performance of plastic
films and sheets.
This Standard is applicable to plastic films, sheets and other similar plastic materials.
2 Normative References
GB 1040 Plastics - Determination of Tensile Properties
GB 2918 Plastics - Standard Atmospheres for Conditioning and Testing
GB 6672 Determination of Thickness of Plastic Film and Sheeting by Mechanical
Scanning
3 Principle
Apply a tensile load to the standard specimen to make the specimen tear at the right-
angle mouth; and measure the tear load or tear strength of the specimen.
4 Test Apparatus
4.1 A tensile testing machine that meets the requirements of GB 1040 and can meet
the requirements of test speed.
4.2 A thickness measuring instrument that meets the requirements of GB 6672.
5 Specimen
5.1 The shape and size of the specimen are shown in the following Figure:
8 Representation of the Results
8.1 Take the maximum load value during the tearing process of the specimen as the
right-angle tearing load, in N.
8.2 The right-angle tear strength is calculated as follows:
Where:
σtr – right-angle tear strength, in kN/m;
P – tearing load, in N;
d – thickness of specimen, in mm.
8.3 The test results are expressed by the arithmetic mean of the right-angle tearing
load or right-angle tear strength of all specimens. The significant figures of the test
results are two digits or determined as per the product standard.
9 Test Report
The test report shall include the following:
a. The name and number of this Standard;
b. Description of sample type, production date, etc.;
c. The direction of the specimen: If necessary, indicate the thickness of each
specimen or overlapping specimen group, as well as the average thickness and
quantity of the specimen or overlapping specimen group;
d. If an overlapping specimen group is used, it shall be indicated;
e. Test result: If necessary, indicate the test result and standard deviation of a single
specimen;
f. Test date;
g. The cases that the specimens and tests are inconsistent with this Standard or
not specified in this Standard.
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