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QB/T 4878-2015Expanded polypropylene for moulding (English PDF)

模塑聚丙烯泡沫塑料（PPE）

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Issued by

Ministry of Industry and Information Technology of the People's Republic of China

Level / Type

National · Recommended

Issue date

May 8, 2018

Implementation date

September 1, 2018

Scope

QB/T 4878-2015 is the English-translated version of 模塑聚丙烯泡沫塑料（PPE）.

QB/T 4878-2015 — This Standard specifies the principle, devices, test methods, results representation and test report of the durability test for plastic buckle.

This Standard is applicable to the test of plastic buckles for case and bag, clothing.

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Document preview — QB/T 4878-2015

National Standard of the People's Republic of China

ICS: 59.140.35

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword...3
1 Scope...4
2 Principle...4
3 Devices...4
4 Test methods...5
5 Results representation...5
6 Test report...6

Foreword

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

This Standard was proposed by China National Light Industry Council.

This Standard shall be under the jurisdiction of National Technical Committee on

Leather Industry of Standardization Administration of China (SAC/TC 252).

The drafting organizations of this Standard: Dongguan Hengyu Instrument Co., Ltd.,

National Leather Products Quality Supervision and Inspection Center (Guangzhou),

Huizhou Quality Metrology Supervision and Inspection Institute of Guangdong

Province, China Leather and Footwear Industry Research Institute, Guangzhou Quality

Supervision and Inspection Institute.

Main drafters of this Standard: Liu Long, Deng Chengliang, Hu Kun, Zhao Liguo, Nie

Xueming, Huang Yongqin, Duan Xiaoxia, Su Danxia.

This Standard is issued for the first time.

Hardware fitting of case and bag - Test method for

durability of plastic buckle

1 Scope

This Standard specifies the principle, devices, test methods, results representation and

test report of the durability test for plastic buckle.

This Standard is applicable to the test of plastic buckles for case and bag, clothing.

2 Principle

Simulate the use of the specimen. Reciprocate opening-closing to the specified number

of times at a certain frequency. Check the quality of the plastic buckle.

3 Devices

3.1 Plastic buckle durability testing machine

It shall include the components specified in 3.1.1~3.1.3.

3.1.1 The test device (see Figure 1 for the schematic diagram) consists of two sets of

specimen holders on the left and right. The left specimen holder is used to secure the

upper part of the buckle. It can also periodically press the positioning piece of the buckle

(left and right position or upper position). The right specimen holder is used to fix the

lower part of the buckle. It also makes the lower part do reciprocating forward and

withdrawing motion. The left and right specimen holders cooperate with each other, so

that the upper and lower parts of the buckle do horizontal reciprocating opening-closing

movement, and the movement frequency is adjustable.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 6 pages — is available in the English PDF.

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