Precautions for using metal zippers on clothing of different textures
Time：2026-07-27
The bleaching and self processing of wool knitwear usually adopts the following methods: acid bleaching agent (H20z) treatment or reducing bleaching treatment (sulfite) 1) 2) anti shrinkage treatment or bleaching self treatment during the post-processing of wool knitwear.
The bleaching and self processing of wool knitwear usually adopts the following methods: acid bleaching agent (H20z) treatment or reducing bleaching treatment (sulfite) 1) 2) anti shrinkage treatment or bleaching self treatment during the post-processing of wool knitwear. If the water washing and neutralization treatment are not sufficient, gases such as C1: or S will be produced, and when exposed to high temperature (steam ironing), these gases are not easily reacted with metals.
Therefore, after bleaching processing, please use fabric that has been thoroughly cleaned.
Due to the immediate compression and packaging of fabrics after steam ironing, metal zippers containing copper alloy components such as teeth, pulls, and top and bottom stops can undergo chemical reactions with reagents or gases, making them prone to discoloration.
◆ Therefore, for products that have been steam ironed, please cool them thoroughly before packaging.
Leather products are usually processed using inorganic acids, sulfuric acid, chromium compounds, aldehyde compounds, etc. The main component of leather is animal eggs, and it is very difficult to completely remove and dispose of reagents (inorganic acids, sulfuric acid, chromium compounds, aldehyde compounds, etc.), which can easily lead to residual reagents on the leather. When these residual reagents come into contact with the metal zipper, a chemical reaction occurs, and the color of the metal accessories (teeth, pulls, and upper and lower stops, etc.) will gradually change.
◆ So: please use leather that has been thoroughly cleaned and neutralized.
Ordinary clothing products are prone to chemical reactions with metal zippers due to insufficient cleaning after dyeing and processing, resulting in residual acidic compounds on the dyed fabric that can contaminate the fabric.
◆ Therefore, please use clothing that has been completely removed of oxidants (neutralized) or thoroughly cleaned.
To enhance the sliding ability, apply paraffin wax on the tooth surface of the metal zipper. However, the paraffin wax on the fabric that has been ironed and waterproofed can easily transfer to the fabric and cause contamination. So: Please place a thin cloth or paper on the contact area between the iron and zipper,
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