How can we distinguish between nylon zippers and resin zippers?

I. Differences in Tooth Chain Production Processes

1.Resin zippers feature a plastic tooth chain that is relatively thick and opaque, giving it a rigid plastic feel. The tooth chain, typically in a square shape, is produced by melting polyester compounds at high temperatures and then engaging them onto the cloth tape using a chain-forming machine.

2.Nylon zippers have a finer tooth chain that is molded under heat and pressure from nylon monofilament. It has a translucent appearance, resembling plastic threads coiled together, and is relatively soft.

II. Differences in Scope of Application and Uses

1.Nylon zippers are widely used in clothing, home textiles, luggage, and tents, primarily due to their softness and applicability.

2.Resin zippers are more commonly used in outerwear and luggage, imparting a fashionable texture.

III. Differences in Production Materials

1.The main material of nylon zippers is polyester, which has a relatively low cost and is a popular choice in the market.  

2.The primary material of resin zippers is polyoxymethylene, which has a slightly higher cost than nylon but is still lower than metal. However, its durability surpasses that of nylon and metal.

IV. Differences in Post-Processing Techniques for Tooth Chains 

1.The post-processing techniques for nylon tooth chains include dyeing and electroplating. They can be dyed separately from the cloth tape in different colors or stitched together and dyed in the same color. Electroplating commonly includes gold and silver teeth, with rainbow teeth requiring a more advanced process.

2.The post-processing techniques for resin tooth chains involve color adjustment or film lamination during hot-melt chain formation. Color adjustment can be based on the cloth tape color or metal plating color. The conventional lamination process involves attaching a layer of bright gold or silver film to the produced tooth chain. Special lamination methods can also be customized according to requirements.

V. Differences in Price

1.Nylon zippers come in various categories, with costs ranging from a few cents per piece upwards. Prices vary based on production processes and usage requirements, making them relatively inexpensive in the market. 

2.Resin zippers also have multiple models, with the open-end structure being the most commonly used. Production costs are relatively higher. Depending on market demands, unit prices can vary from more than three mao (a traditional Chinese currency unit, equivalent to approximately 0.03 yuan) and above. Under the premise of the same size requirements, resin zippers are significantly more expensive than nylon zippers.