GB/T 7125-2014Test method for thickness of adhesive tapes (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 7125-1999 "Test method for thickness of

pressure-sensitive adhesive tape and adhesive tape". As compared with GB/T

7125-1999, the main technical changes are as follows.

- CHANGE the standard name from "Test method for thickness of pressure-

sensitive adhesive tape and adhesive tape" to "Test method for thickness

of adhesive tapes" (see cover; cover of the 1999 version);

- ADD a clause on normative references (see clause 2);

- DELETE the clause on meaning and use (see clause 3 of the 1999 version);

- MODIFY the requirements for the gauge head diameter and the

measurement pressure (see 4.1 and 4.2; 4.1.1 and 4.1.2 of the 1999

version);

- MODIFY the requirements for the width and length of the specimen (see

5.1; 5.1 of the 1999 version);

- MODIFY the requirements for the temperature range of test environment

and the time required to condition the specimen (see clause 6; 6.1 of the

1999 version);

- MODIFY the requirements for reading time during the testing (see 7.2; 7.1

of the 1999 version).

This standard is revised in accordance with ASTM D3652/D3652M-01.2012

"Test method for thickness of pressure-sensitive adhesive tapes".

This standard has several structural adjustments as compared with ASTM

D3652/D3652M-01.2012.Appendix A provides a comparison list of clause

numbers of them.

Tas compared with ASTM D3652/D3652M-01.2012, there are technical

differences in this standard. The clauses involved in these differences have

been indicated by a vertical single line (|) in the blank position of outer margin.

Appendix B provides technical differences as well as the causes.

This standard has made the following editorial changes.

- MODIFY the description of the length unit, ASTM D3652/D3652M-01.2012

proposes three length units of mils, mm, in in 3.2.1, 5.1.1, 9.2, 10.1.2,

respectively. However, in order to use the international unit of measurement,

this standard uses mm or µm as the unit of length;

- ADD Appendix A (informative) "Structural changes in this standard as

compared with ASTM D3652/D3652M-01.2012";

- ADD Appendix B (informative) "Technical differences between this standard

and ASTM D3652/D3652M-01.2012 and their causes".

This standard was proposed by the China Petroleum and Chemical Industry

Federation.

This standard shall be under the jurisdiction of the National Adhesive

Standardization Technical Committee (SAC/TC 185).

Drafting organizations of this standard. Guangzhou Hongchang Adhesive Tape

Factory, Shanghai Rubber Products Research Institute, Yongda (Zhongshan)

Co., Ltd., Lianguan (Zhongshan) Adhesive Products Co., Ltd., Yongyi Adhesive

(Zhongshan) Co., Ltd., Guangdong Damei New Materials Co., Ltd., Zhongshan

New Asia Adhesive Products Co., Ltd., Shanghai Jinhua Adhesive Products

Development Co., Ltd., Fengdu Technology Development Co., Ltd., Hebei

Huaxia Industrial Co., Ltd.

1 Scope

This standard specifies the test method for the thickness of pressure-sensitive

adhesive tapes and other adhesive tapes.

This standard applies to the determination of the thickness of adhesive tape. It

is used for quality control of adhesive tape products.

2 Normative references

The following documents are essential to the application of this document. For

the dated documents, only the versions with the dates indicated are applicable

to this document; for the undated documents, only the latest version (including

all the amendments) are applicable to this standard.

GB/T 22396 Terminology relating to pressure sensitive adhesive products

GB/T 22520 Dial thickness gauges

3 Terms and definitions

The terms and definitions as defined in GB/T 22396 as well as the following

terms and definitions apply to this document.

4 Devices

5 Samples and specimens

6 Test environment

Before the test, hold the sample adhesive tape roll in the test environment.

Make its state reach balance.

7 Test process

8 Report

The report includes the following.

Appendix A

(Informative)

Structural changes in this standard as compared with ASTM

D3652/D3652M-01.2012

As compared with ASTM D3652/D3652M-01.2012, this standard is basically

the same in structure. The specific clause number comparison is as shown in

Table A.1.

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