Practical Zipper Knowledge for Buyers & Makers
Learn the basics and beyond—from zipper types and materials to design tips. This knowledge base is curated for sourcing managers, designers, and zipper enthusiasts.
This report targets purchasing managers, business owners, and design researchers within the textile and apparel industry, offering guidelines for identifying high-quality zippers. It is particularly beneficial for newcomers to the zipper procurement sector, aiming to enrich their purchasing experience.
Key Considerations for Purchasing Zippers
When selecting zippers for garments, it is critical to consider not only color matching between the zipper tape and fabric (color deviation) but also the color fastness of the zipper tape. The color fastness, compliance with standard levels, and potential color transfer between the zipper and the garment significantly affect product quality. Color fastness encompasses resistance to washing and abrasion, referring to the extent of fading dyed fabrics undergo when exposed to external factors (e.g., pressure, friction, soap washing, rain, sun exposure) during use or processing. Manufacturers should focus on three types of color fastness: light fastness, wash fastness, and color migration.
Light Fastness
Light fastness, combined with sweat fastness, is crucial as sunlight exposure triggers photochemical reactions damaging the dye structure, leading to discoloration and fading. Sweat, which can be slightly acidic or alkaline, further reduces the light fastness of disperse dyes. Thus, it is advisable to select zipper products treated with UV-enhancing agents or those with high light fastness.
Wash Fastness
Wash fastness of the zipper tape is also crucial. Typically, zipper tapes are made of 100% polyester, dyed with disperse dyes at high temperatures. Wash fastness depends on the interaction strength between dye and fiber molecules and the residual dye on the fiber surface after post-dyeing treatments. Thorough post-dyeing treatments minimize surface dye residues, reducing the likelihood of fading during washing. It is essential to inform consumers to avoid high-temperature water and strong detergents, keeping washing temperatures below 40°C and using neutral or mildly alkaline detergents for no more than 30 minutes.
Color Migration
Color migration is a concern when special materials like PVC, PE fabric, and various coatings are used. These materials often contain plasticizers and solvents, causing dye molecules to migrate from the inner to the outer layer, staining light-colored fabrics. Selecting zippers with dyes that bond effectively with polyester fibers mitigates this issue.
Zippers are vital accessories in clothing, and their quality directly impacts the final product. Therefore, when selecting zipper suppliers, it is crucial to understand the various performance indicators of their products. This report provides a comprehensive guide for ensuring high-quality zipper procurement, thereby enhancing overall garment quality.
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