A production process of double-layer co-extruded ultra-low temperature zipper

Abstract

The invention discloses a double-layer co-extrusion ultralow-temperature production process of zippers. The double-layer co-extrusion ultralow-temperature production process includes the steps that firstly, a co-extrusion structure is prepared; secondly, raw materials are prepared; thirdly, the raw materials are each stirred; fourthly, the raw materials are put into hoppers of a co-extrusion machine and an extrusion machine; fifthly, preheating and heat preservation are conducted on the extrusion machine and the co-extrusion machine, and cooling water is injected in a water tank; sixthly, synchronous extrusion is conducted; seventhly, products are cooled through the cooling water; eighthly, the products are dried; ninthly, the products are made to penetrate through a direction changing shaft; tenthly, screening and laminating are conducted on the products; eleventhly, the products are made to penetrate through a traction machine; and twelfthly, the products are adjusted through an adjusting rack, and after moving upwards to increase the height, the products freely fall, fall into the inner side of a box downwards and are autonomously wound. By means of the double-layer co-extrusionultralow-temperature production process, the production temperature of clamp chains is lowered, consumption of production energy is reduced, the production cost is reduced, surfaces are attractive after PP heat seal, appearance of PE clamp chain bodies is not influenced, appearance structures are perfectly preserved under large-area heat seal, and therefore the functions of increasing the finished product rate and reducing waste materials are achieved.

Description

technical field [0001] The invention relates to the technical field of zippers, specifically a production process for double-layer co-extruded ultra-low temperature zippers. Background technique [0002] As an emerging product in zippers, zippers are widely used. At present, there are various types of zippers, and the structural styles are also changing. However, most of them are single-component and single-type raw materials in terms of the most basic composition and structure. zipper. [0003] The production of zipper needs to heat the raw materials and extrude them into shape. In this production process, the temperature is very important. In the common zipper production process on the market, the heating temperature of the raw materials is basically around 150°C. The heating process It is the process of consuming energy, continuous heating consumes a lot of energy, and virtually increases the production cost. [0004] During the heat-sealing process of the zippers curre...

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Problems solved by technology

[0002] As an emerging product in zippers, zippers are widely used. At present, there are various types of zippers, and the structural styles are also changing. However, most of them are single-component and single-type raw materials in terms of the most basic composition and structure. zipper

[0003] The production of zipper needs to heat the raw materials and extrude them into shape. In this production process, the temperature is very important. In the common zipper production process on the market, the heating temperature of the raw materials is basically around 150°C. The heating process It is the process of consuming energy. Continuous heating consumes a lot of energy and virtually increases the production cost.

[0004] During the heat-sealing process of the zippers currently on the market, there are generally hot-melt marks on the surface, and even partial surface damage. Hot-melt and heat-sealing are inevitable steps in the installation of zippers and corresponding products. , the damage of heat sealing to ordinary zipper is relatively large, a little carelessness may produce waste products, affect the yield, increase the production cost and affect the appearance of the product at the same time

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