Process for preparing plastic hook fastener

Abstract

The invention discloses a process for preparing a plastic hook fastener. The method is characterized in that after a toughened nylon material is melted, the material is extruded through an extruding machine (1); after passing through a flat sheet mold (2), the material becomes a continuous sheet material and enters a traction mechanism; after hook teeth are rolled on the flexible sheet material by a tooth making roller (3) with random hook teeth, the sheet material enters a flat pressing roller (4) for shaping; and the sheet material is split into a strip shaped fastener product by a splitting machine (5) for package.

Description

Technical field: [0001] The invention relates to a preparation process of a hook and loop fastener, in particular to an invention of a preparation process of a plastic hook hook and loop fastener. Background technique: [0002] In the prior art, the Velcro has a wide range of applications, such as the fastening of luggage, military and civilian raincoats, etc. all need adhesive tapes. This Velcro is composed of two parts, usually called male and female buckles, Flocking is carried out on the female board, and tooth hooks are made on the face-to-face of the male board and the female board. When the male board and the female board are in contact with each other, the tooth hook enters the flocking gap of the female board for bonding to achieve the purpose of fastening . The present invention only relates to the preparation of hook and loop fasteners. But the preparation method of existing Velcro is more complicated, and the hook tooth height is uniform, and its plastic hook p...

AI Technical Summary

Problems solved by technology

However, the preparation method of the existing hook and loop fasteners is relatively complicated, and the hook teeth are highly uniform, and the plastic hook pieces are poorly adapted to the environment. Generally, they harden and cannot be used in weather conditions below minus 10°C.

Check Chinese Patent No. CN01119971.7 Velcro and its manufacture method, is to carry out waterproof treatment to nylon thread, form waterproof layer, and carry out dry burning process to the nylon thread that forms waterproof layer, also need to be isolated from outside on the nylon thread surface The waterproofing agent is treated to form a waterproof layer, and then the nylon yarn is dry-burned, and the surface of the treated nylon waterproof layer is treated with polyurethane, and finally the nylon yarn is woven into a plurality of equidistantly arranged rings at the monofilament end of the hook and loop. shape body, and cut it into a hook-shaped button end on one side of the ring body. This manufacturing process is very complicated and inconvenient to operate

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