GB/T 4879-2016Rustproof packaging (English PDF)

Foreword

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

This standard replaces GB/T 4879-1999 "Rustproof packaging". In addition to editorial changes, as compared with GB/T 4879-1999, the main technical changes of this standard are as follows.

- RE-DESCRIBE the Chapter 1 "Scope";

- DELETE the Chapter 3 "Terms";

- MODIFY the rustproof period of the level 1 packaging from "within 3 ~ 5 years" into "2 years"; MODIFY the rustproof period of the level 2 packaging from "within 2 ~ 3 years" into "1 year"; MODIFY the rustproof period of the level 3 packaging from "within 2 years" into "0.5 year" (SEE 3.2);

- ADD the description of the rustproof level of special packaging (SEE 3.2);

- DELETE the provisions on rustproof materials (SEE 5.2.1 and 5.2.2 of the 1999 version);

- MERGE the "Environmental requirements" (SEE 5.3 of the 1999 version) and "General requirements" (SEE Chapter 4);

- DELETE the provisions on "marking" (SEE Chapter 8 of the 1999 version);

- COMBINE B3 and B5 in Table A.4 in Appendix A; CMOBINE B4 and B9; MAKE appropriate modifications;

- MODIFY part of "A.4 Packaging" in Appendix A.

1 Scope

This standard specifies the rustproof packaging level, general requirements, material requirements, rustproof packaging methods, and test methods.

This standard applies to the design, production and inspection of rustproof packaging.

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 5048 Moistureproof packaging

GB/T 12339 Inner packaging materials in preservation

GB/T 14188 General rules for selection and using of packaging materials with volatile corrosion inhibitor

GB/T 16265 Test method of packaging materials - Compatibility

GB/T 16266 Test method of packaging materials - Contact corrosion

3 Rustproof packaging level

3.1 It shall determine the rustproof packaging level through comprehensive consideration of such factors as the nature of the product, circulation environment conditions, and the rustproof period, etc.

4 General requirements

4.1 DETERMINE the rustproof packaging level; MAKE packaging in accordance with the packaging level requirements; and ENSURE that the product will not be rusted in the rustproof period.

4.2 The rustproof packaging process shall be continuous, AND if interrupted, it may take a temporary rustproof treatment.

4.3 In the rustproof packaging process, it shall avoid hand sweat or other contaminants from contaminating the products.

4.6 As for the products using the rustproof agent for rustproof purposes, it shall generally remove the rustproof agent during unsealing. If the application or removal of the rustproof agent of the product may affect the product performance, it shall not use the rustproof agent.

4.7 The rustproof packaging operations shall be carried out in a clean and dry environment with small temperature changes.

5 Material requirements

5.1 As for the rustproof materials used in the product, its quality shall meet the requirements of relevant standards.

5.2 Desiccants are generally of mineral desiccants. Mineral desiccant shall be in accordance with BB/T 0049.

5.3 The vapor rustproof packaging materials shall comply with the relevant provisions of GB/T 14188.

6 Rustproof packaging method

6.1 It shall determine the rustproof packaging methods based on the following conditions.

6.2 The rustproof packaging is divided into cleaning, drying, rust-proofing and packaging.

7 Test method

7.1 The rustproof packaging may follow the periodic exposure test A as specified in GJB 145A-1993.It may select 3 periods of exposure test for the level 1 packaging, 2 periods of exposure test for the level 2 packaging, AND 1 period of exposure test for the level 3 packaging.

7.2 After the periodic exposure test, it shall unseal and inspect all the inner products and materials, which shall be free from corrosion, aging, rupture or other abnormalities.

Appendix A (Informative) Commonly used rustproof packaging method