There are a variety of zipper styles and ever-changing designs on the market, which not only bring convenience to people's life, but also add highlights to clothing. Zipper classification is not the same, such as material, form, pull head, use, manufacturing process, etc. The biggest advantage of zipper product classification is to guide consumers to choose and use zippers correctly. This paper provides the zipper manufacturing process classification, can be divided into cold stamping, injection molding, heating extrusion, heating winding four categories.
Cold Stamping
At room temperature, stamping die on the press to exert pressure on the sheet, so that it produces plastic deformation or separation to obtain the required shape and size of parts processing method for cold stamping molding. Chain teeth through blanking, cold stamping molding, into the row of teeth, forming a single tooth orderly arranged a tooth chain, such as ordinary metal zipper.
Injection Molding
At a certain temperature, the completely molten plastic material is shot into the mold cavity by high pressure, after cooling and curing, the method of molding products become injection molding. The molded chain teeth are fixed to the cloth straps with tendons by injection molding process, such as plastic steel zippers and zinc alloy zippers.
Heat extrusion type
Heating extrusion is a compound processing technology. Chain teeth are first formed by heating, and then formed by cutting, and then sent to the sewing machine for sewing, which is fixed on the cloth belt, such as reinforced zipper.
Heated Wound Type
A single wire through the molding machine winding, heating, teeth, forming, formed a continuous spiral tooth chain, and then use the suture machine to sew the chain teeth on the cloth belt, such as nylon zipper, invisible zipper, double bone zipper are using this processing technology. But woven zippers are a little different. Nylon zipper, double bone zipper, invisible zipper are all stitched on the chain with stitches, while woven zipper is directly woven on the cloth belt with yarn through the ribbon loom.
Post time: Apr-27-2022