This Standard specifies the product classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage for metal zipper.
This Standard is applicable to metal zipper (hereinafter referred to as "zipper").
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
GB 250-1995 Gray Scale for Assessing Change in Color
GB 251-1995 Gray Scale for Assessing Staining
GB/T 2828-1987 Sampling Procedures and Tables for Lot-by-lot Inspection by Attributes (Apply to Inspection of Successive Lots or Batches)
GB/T 2829-1987 Sampling Procedures and Tables for Periodic Inspection by Attributes (Apply to Inspection of Stability for Productive Process)
GB/T 3920-1997 Textiles - Tests for Color Fastness - Color Fastness to Rubbing
GB/T 3921.3-1997 Textiles - Tests for color fastness to washing: Test 3
3 Product Classification
3.1 Product Type (see Figure 1)
3.1.1 The products are classified into copper, aluminium ones etc. according to zip teeth materials.
3.1.2 The products may be classified into chemical fiber tape and cotton yarn tape according to zipper tape.
3.1.3 According to types, there are finished products and chain products.
3.1.3.1 Finished zipper may be classified into two styles, namely, open-end and close-end; open-end style may be further classified into single open-end and double open-end; close-end style may be further classified into single-head close-end and double-head close-end.
3.2 Specifications and Models (see Table 1)
