Insole board, also known as paper insole board, is an urgent new material for shoe industry, which is used to make all kinds of shoes insole. The quality requirement of paper insole board is quite high, and the production difficulty is also quite large. From a technical point of view, to make good insole board, It is necessary to understand the quality requirements of shoe factory paper insole board and the level of similar products at home and abroad as well as the relevant technical points of production.

The process of using paper insole board in shoe factory takes leather shoes as an example. Generally, the paper insole board is first cut into a variety of different numbers of insole, and the insole is processed into a composite insole together with the half support sole and hook heart. The composite insole and the upper part of the shoe are further bonded, and then the bottom side is bonded to the outsole, and the insole is bonded to the insole above the shoe.

In this process, the quality requirements of the inner bottom board are mainly: good punching, can be smoothly washed into the perimeter of the inner bottom neatly. Paper insole baord inside is not allowed to have hard impurities, so as to avoid punching the knife broken. The dimensional stability is good. The insole after punching will not shrink or extend because of the change of ambient temperature and humidity in the storage process. The surface of the insole board should have a certain glue-absorbing property, which is easy to glue firmly with the upper. And there has to be some surface strength, not because the surface strength is not enough, the surface layer and the adhesive upper separation.

From the wearing process of shoes, the quality requirements of the inner bottom board are mainly: the material should be light and soft, to ensure that it is comfortable to wear in the state of new shoes.

Absorbency is better, even in the case of sweaty feet, also will not cause foot disease because of stuffy feet. Must have high internal strength, do not allow to wear over.

During the process, the shoe is damaged because of the layering of the inner sole of the paper insole board. To have enough wet-resistant strength, not because of sweat or rain soaked, under the friction of the bottom of the foot and damage. To have high flexural strength, wearing process will not cause damage to the shoe because of the paper insole board inner sole fracture.