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GB/T 29335-2024: General quality requirements for twist-off caps of food containers
Status: Valid GB/T 29335: Evolution and historical versions
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| GB/T 29335-2024 | English | 519 |
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General quality requirements for twist-off caps of food containers
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GB/T 29335-2024
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| GB/T 29335-2012 | English | 759 |
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Twist-off caps
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GB/T 29335-2012
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PDF similar to GB/T 29335-2024
Basic data | Standard ID | GB/T 29335-2024 (GB/T29335-2024) | | Description (Translated English) | General quality requirements for twist-off caps of food containers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A82 | | Classification of International Standard | 67.250 | | Word Count Estimation | 26,288 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-11-01 | | Older Standard (superseded by this standard) | GB/T 29335-2012 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 29335-2024: General quality requirements for twist-off caps of food containers---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 67:250
CCSA82
National Standards of People's Republic of China
Replaces GB/T 29335-2012
General rules for quality of claw-type twist-off caps for food containers
Released on 2024-04-25
2024-11-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Product specifications, models and categories 1
4:1 Product Specifications 1
4:2 Product Model 2
4:3 Product Classification 2
5 Quality requirements 3
5:1 Raw and auxiliary materials 3
5:2 Basic structure and dimensions 3
5:3 Appearance quality 4
5:4 External wall coating quality 5
5:5 Inner wall coating quality 5
5:6 Sealing gasket quality 5
5:7 Openness 5
5:8 Vacuum safety button 5
6 Test methods 6
6:1 General requirements for reagents and solutions 6
6:2 Specifications and dimensions 6
6:3 Appearance Quality 8
6:4 External wall coating quality 8
6:5 Inner wall coating quality 9
6:6 Sealing gasket quality 10
6:7 Openness 11
7 Inspection Rules 11
7:1 Basic requirements 11
7:2 Factory Inspection 11
7:3 Type inspection 11
7:4 Transfer Rules12
8 Marking, packaging, transportation and storage 13
8:1 Sign 13
8:2 Packaging 13
8:3 Transportation13
8:4 Storage 13
Appendix A (Informative) Basic structure and dimensions of the cover 14
Appendix B (Informative) Recommended indicators for opening torque and vacuum safety button 16
Foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents"
Drafting:
This document specifies the technical requirements related to quality: For food safety requirements, please refer to relevant laws, regulations, policies and food safety standards:
document:
This document replaces GB/T 29335-2012 "Claw-type twist-off caps": Compared with GB/T 29335-2012, except for structural adjustments and editorial
In addition to the modifications, the main technical changes are as follows:
--- Deleted 3:1~3:6 in "Terms and Definitions" (see Chapter 3 of the:2012 edition);
--- Added the "anti-slip teeth conventional claw type twist-off cap" and other twist-off cap models (see 4:2 Table 1);
--- Changed the product classification (see 4:3, 4:3 of the:2012 edition);
--- Changed the requirements for tin-plated or chrome-plated steel sheets and sealing gaskets in "Raw and auxiliary materials" (see 5:1, 5:1 of the:2012 edition);
--- Deleted the requirements for interior and exterior coatings in "Raw and auxiliary materials" (see 5:1 of the:2012 edition);
--- Added requirements for tin-plated or chrome-plated steel sheets in "raw and auxiliary materials" (see 5:1:2);
--- Added requirements for coated iron in "raw and auxiliary materials" (see 5:1:3);
--- Deleted the content related to "food hygiene and safety" (see 5:1:5 of the:2012 edition);
--- Changed the cover type and specifications of products 53 and 58 (see 5:2, 5:2 of the:2012 edition);
--- Added "salt resistance" and test methods (see 5:5:5 and 6:5:5);
--- Changed the "Bactericidal resistance test method" (see 6:4:1, 6:4:1 of the:2012 edition);
--- Changed the "Corrosion resistance test" method (see 6:4:2, 6:4:2 of the:2012 edition);
--- Changed the situations where type inspection should be carried out (see 7:3:1, 7:3:1 of the:2012 edition):
Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents:
This document is proposed and coordinated by the National Food Industry Standardization Technical Committee (SAC/TC64):
This document was drafted by: Hangzhou COFCO Packaging Co:, Ltd:, Wuxi Huapeng Bottle Cap Co:, Ltd:, Suzhou Huayuan Holdings Co:, Ltd:, Shan
Donghuanqiu Tin Printing and Canning Co:, Ltd:, Huanlejia Food Group Co:, Ltd:, China Canning Industry Association, China Food Fermentation Industry Research
INN LIMITED:
The main drafters of this document are: Yu Jianwei, Xu Dixing, Shen Junjie, Zhou Demin, Guo Lirong, Liu Youqian, Qiu Kai, Yu Xinxin, Gao Yan, Chao Xi,
Wu, G:, Wang, Y:, and Ma, J:J:
The previous versions of this document and the documents it replaces are as follows:
---First published in:2012 as GB/T 29335-2012;
---This is the first revision:
General rules for quality of claw-type twist-off caps for food containers
1 Scope
This document specifies the product classification, product specifications, requirements, test methods, inspection rules, marking, packaging, etc: of claw-type twist-off closures for food containers:
Packing, transportation and storage:
This document applies to claw-type twist-off closures made of tin-plated or chrome-plated thin steel sheets or coated iron for sealing bottled food packaging:
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document:
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document:
GB/T 2520 Cold-rolled tin-plated steel sheets and strips
GB/T 2828:1 Sampling procedures for inspection by attributes Part 1: Sampling plans for batch inspection based on the acceptance quality limit (AQL)
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 24180 Cold-rolled chrome-plated steel sheets and strips
GB/T 41711 Determination of acid resistance, sulfur resistance and salt resistance of coatings on the inner wall of metal food containers
GB/T 41899 General rules for the quality of tin-plated or chrome-plated steel sheets for food containers
GB/T 43951 General rules for the quality of coated iron and coated aluminum for food containers
QB/T 1877 Printing of tinned (chrome) steel sheets for packaging and decoration
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Solid sealing gasket solidsealinggasket
The glue made of polyvinyl chloride resin and other auxiliary materials is injected, baked and plasticized to form a solid seal bonded to the inner wall of the bottle cap:
The gasket may be a solid sealing gasket which is bonded to the inner wall of the bottle cap after being heated and molded by a thermoplastic elastomer:
3:2
The foamable glue made of polyvinyl chloride resin and other auxiliary materials is made into a kind of adhesive bonded to the inner wall of the bottle cap through injection, baking and plasticization:
A sealing gasket with micro pores, or a sealing gasket with micro pores which is bonded to the inner wall of a bottle cap after being heated and molded by a thermoplastic elastomer:
4 Product specifications, models and categories
4:1 Product Specifications
Product specifications include nominal diameters of 30mm, 38mm, 43mm, 48mm, 53mm, 58mm, 63mm, 66mm,
Claw-type twist-off caps for 70mm, 77mm, 82mm and 100mm:
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