High-resilience insole and manufacturing method thereof

Abstract

The invention discloses a high-resilience insole which comprises a PU insole body and elastic particles. The elastic particles are embedded in the PU insole body, and the density of the elastic particles ranges from 0.1 g/cm<3> to 0.2 g/cm<3>.The high-resilience insole is simple in structure, and foldable while not likely to deform, and has high resilience. The invention further discloses a manufacturing method of the high-resilience insole. The manufacturing method comprises the following steps that firstly, 3-5 parts of PU by weight and a catalyst are put into a material barrel, then the mixture is heated to 40-55 DEG C, and the temperature is maintained to be constant; secondly, 1 part of elastic particles with the melting point higher than 55 DEG C by weight are added into the material barrel and then stirred evenly, and a mixture is obtained; thirdly, the mixture is injected into a mold, cooling and sizing are carried out, and the high-resilience insole is obtained. The manufacturing method is simple in processing step, low in processing cost and high in reliability, and the obtained finished product is high in yield, large in strength and resilience and high in practicability.

Description

technical field [0001] The invention relates to the field of insole manufacturing, in particular to a high-resilience insole and a manufacturing method thereof. Background technique [0002] Because the soles of common shoes are relatively hard, people directly touch their feet with the soles when wearing shoes, which can easily cause people to feel uncomfortable, and after wearing them for a long time, the feet are prone to fatigue and damage. On the other hand, the contact part between the soles and the soles is prone to sweating , The sole absorbs sweat directly and is easy to be damaged, and it will cause the shoes to stink. Therefore, many people will use the insole as a buffer between the sole and the sole of the foot, and in order to use it comfortably, it is usually hoped that the insole has strong resilience as much as possible and is not easy to deform. [0003] Today's common insoles are usually PU insoles made of PU or TPU insoles made of TPU. PU insoles have go...

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Problems solved by technology

[0003] Today's common insoles are usually PU insoles made of PU or TPU insoles made of TPU. PU insoles have good elasticity and support, but due to the high density of PU, the PU insoles produced are heavy and rigid. Strong, weak rebound performance, and TPU insoles, although due to the low density of TPU, its weight is small, good elasticity and rebound performance, but the support performance is not good, and it is very difficult to make insoles with thicker thickness

On the other hand, there is a TPU insole on the market, which is mainly made by melting the edge parts of elastic particles made of a lot of TPU (the abbreviation of Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber) and then bonding them together. However, the number of TPU particles required by this manufacturing method is large, the cost is very high, and the original structure of the TPU particles is greatly affected during the manufacturing process. The distribution of the TPU particles is not balanced, which will lead to poor rebound performance and low strength of the insoles that are finally made. Low, prone to deformation, etc., it relies on edge bonding in the processing process, the processing is very difficult, the temperature requirement is high, the yield is low, and the practicability is not strong. In addition, its versatility is not strong. For other commonly used materials moot

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