Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China
the Standardization Administration of the People’s Republic of China
Contents
Foreword i
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Product structure 1
5 Requirements 2
6 Test methods 4
7 Inspection rules 6
8 Marking, packaging, transport and storage 7
Foreword
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 13521-1992 Crown cap. The following technical changes have been made with respect to GB/T 13521-1992:
——The definition of cap is modified (see Clause 3);
——The requirements for basic dimensions and deviations of caps are revised (see 5.2);
——The test methods for tightness and instantaneous pressure resistance are modified (see 5.5.3);
——Cap gasket materials such as polyethylene are added (see 5.4.2 and 6.3);
——The classification of the premium grade and qualified grade for caps are deleted.
This standard was proposed by and is under the jurisdiction of the National Technical Committee 49 on Packaging of Standardization Administration of China (SAC/TC 49).
The previous edition of this standard is as follows:
——GB/T 13521-1992.
Crown cap
1 Scope
This standard specifies the dimensions, requirements, test methods, inspection rules, and marking, packaging, transport and storage of crown caps made of electrolytic tinplate (or electrolytic chromium/chromium oxide coated steel sheet) for food packaging such as beer and beverage (hereinafter referred to as "caps").
This standard is applicable to the caps for sealing finishes which meet the requirements of QB/T 3729. This standard may also serve as a reference for the caps for sealing finishes for containers made of other materials.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
For the purposes of this standard, the following terms and definitions apply.
3.1
crown cap
bottle cap composed of a crown-shaped metal matrix with teeth on the periphery and an embedded sealing gasket, which is used for sealing the finish meets the requirements of QB/T 3729 to meet the packaging requirements of beer, beverage and other products with air tightness requirements
4 Product structure
See Figure 1 for the schematic diagram of cap structures.
Key:
S——the thickness of the matrix;
D——the outside diameter;
d——the inner diameter;
H——the cap height.
Figure 1 Schematic diagram for cap structures
ICS A National Standard of the People’s Republic of China GB/T 13521- Replaces GB/T 13521- Crown cap 冠形瓶盖 (English Translation) Issue date: 2016-02-24 Implementation date: 2016 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China the Standardization Administration of the People’s Republic of China Contents Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Product structure 5 Requirements 6 Test methods 7 Inspection rules 8 Marking, packaging, transport and storage Foreword Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 13521-1992 Crown cap. The following technical changes have been made with respect to GB/T 13521-1992: ——The definition of cap is modified (see Clause 3); ——The requirements for basic dimensions and deviations of caps are revised (see 5.2); ——The test methods for tightness and instantaneous pressure resistance are modified (see 5.5.3); ——Cap gasket materials such as polyethylene are added (see 5.4.2 and 6.3); ——The classification of the premium grade and qualified grade for caps are deleted. This standard was proposed by and is under the jurisdiction of the National Technical Committee 49 on Packaging of Standardization Administration of China (SAC/TC 49). The previous edition of this standard is as follows: ——GB/T 13521-1992. Crown cap 1 Scope This standard specifies the dimensions, requirements, test methods, inspection rules, and marking, packaging, transport and storage of crown caps made of electrolytic tinplate (or electrolytic chromium/chromium oxide coated steel sheet) for food packaging such as beer and beverage (hereinafter referred to as "caps"). This standard is applicable to the caps for sealing finishes which meet the requirements of QB/T 3729. This standard may also serve as a reference for the caps for sealing finishes for containers made of other materials. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191 Packaging - Pictorial marking for handling of goods GB/T 2520 Cold-reduced electrolytic tinplate GB/T 24180 Cold-reduced electrolytic chromium/chromium oxide coated steel sheet and strip QB/T 3729 Glass containers - Crown finishes dimensions 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. crown cap bottle cap composed of a crown-shaped metal matrix with teeth on the periphery and an embedded sealing gasket, which is used for sealing the finish meets the requirements of QB/T 3729 to meet the packaging requirements of beer, beverage and other products with air tightness requirements 4 Product structure See Figure 1 for the schematic diagram of cap structures. Key: S——the thickness of the matrix; D——the outside diameter; d——the inner diameter; H——the cap height. Figure 1 Schematic diagram for cap structures
