Manufacture method of TPR (thermoplastic rubber) soft rubber insole

Abstract

The invention discloses a manufacture method of a TPR (thermoplastic rubber) soft rubber insole. The manufacture method comprises the steps of: preparing raw materials of soft rubber, cutting a fabric, forming the soft rubber, gluing and trimming. The raw materials of the soft rubber comprise the following components in percent by mass: 20-29 percent of SEBS (styrene-ethylene-butadiene-styrene) resin, 70-79 percent of white oil, 0.1-1 percent of pigment and 0.2-2 percent of an assistant. The raw materials of the soft rubber are prepared by adopting the steps of: preparing pigment paste, preparing an assistant dispersing system and preparing the raw materials of the soft rubber. The technical scheme of the invention has the advantages of being high in yield of formed soft rubber, low in manufacture cost and simple in compound operation process of the soft rubber and the fabric, easily controlling the quality, and easily changing different styles of dies, is suitable for volume production, and is capable of reducing the production cost of the TPR soft rubber insole. Experiments prove that the manufacture method of the TPR soft rubber insole has the advantage that the processing cost is only 50-60 percent that of an existing injection molding process.

Description

technical field [0001] The invention relates to a method for manufacturing an insole, more specifically a method for manufacturing a TPR soft rubber insole. Background technique [0002] At present, the soft rubber massage insoles on the market are divided into TPR soft rubber insoles, PU soft rubber insoles, and silicone soft rubber insoles. The product performance can basically meet people's use requirements. However, due to the complicated manufacturing process of PU soft rubber insoles, the cost of silicone raw materials for silicone soft rubber insoles is high, and the investment in molds for mass production is large. The manufacturing cost of these two kinds of insoles has been caused to be relatively high, and the price remains high, so they cannot enter the homes of ordinary people. [0003] Existing TPR soft rubber insole comprises soft colloid and lining, and both soft colloid and lining are sole shape, and soft colloid and lining are mutually bonded. The product...

AI Technical Summary

Problems solved by technology

The above method of injection molding is SEBS resin, white oil and other raw materials mixed and then extruded and pelletized, and then the pellets are added to the injection molding machine for injection molding. Extrusion and pelletization need to consume more electric energy

In the screw feeding process of the injection molding machine, due to the good elasticity of the TPR soft rubber raw material, the feeding and feeding of the screw are unstable, resulting in unstable quality of the soft rubber molding, frequent occurrence of material shortage and flashing, and the yield rate not tall

In addition, the process of fixing the fabric on the upper mold also leads to an increase in labor costs. Moreover, the cost of injection molds is relatively high, and it is difficult to configure molds for insoles of different sizes. For this reason, most manufacturers can only provide a few large ones. The size of the insole is cut by the consumer into the desired size of the insole, which limits the consumer's desire to buy and leads to waste of materials

Therefore there is difficult control of technological process in the manufacturing method of above-mentioned PR soft rubber insole, the deficiencies such as low yield rate, high manufacturing cost

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