Polyethylene recyclable isolation film for tire production

Abstract

The invention aims to provide a polyethylene recyclable isolation film for tire production; the isolation film is prepared by particularly adding in ethylene (meth) acrylate E (M) AA copolymer for the film, plastic multi-functional processing aid and plasticizer based on the prior art; the plasticizer and the ratio of the three materials are selected to further improve all the properties of the product, and achieve unexpected effect; and simultaneously, the invention provides a preparation method of the isolation film.

Description

technical field [0001] The invention relates to the production technology of radial tires, in particular to a reusable isolation film used in the production process of radial tires. Background technique [0002] Existing common separators are limited to completely sealing the steel cords and rubber up and down when the calendering of the steel cords and rubber is completed during the tire production process. It is isolated from the air to achieve the effect of dustproof and shading. But it has two notable weaknesses. One is that the ordinary isolation film has a single formula, so that the anti-oxidation effect is not obvious during use, which affects the service life of the tire to a certain extent. The second is that the ordinary isolation film can only be used once, not twice, which not only increases the production cost of the customer, but also increases the development of resources, and affects the ecological environment to a certain extent. [0003] The existing pol...

AI Technical Summary

Problems solved by technology

But it has two significant weaknesses. One is that the ordinary isolation film has a single formula, so that the anti-oxidation effect is not obvious during use, which affects the service life of the tire to a certain extent.

The second is that the ordinary isolation film can only be used once, not twice, which not only increases the production cost of the customer, but also increases the development of resources, which affects the ecological environment to a certain extent

[0003] The existing polyethylene isolation film process is: formula ~ mixing ~ feeding ~ extrusion ~ film pulling ~ shaping ~ cutting ~ winding ~ inspection ~ check weighing ~ packaging, the defect of this process is in the temperature control The heating time is relatively simple, and the embossing treatment tends to be general

In the application of patent publication number CN1807491A, it is recorded that a high-molecular polyethylene repeatedly uses the isolation film. The formula used for this isolation film is: 40-48% of low-density polyethylene, 14-21% of high-density polyethylene, linear polyethylene 13-20%, 0.4-0.5% oleic acid amide, and 17.6-27.6% special recycled materials. This invention can improve the service life of tires by using a large amount of low-density polyethylene in the formula, and can also achieve the effect of repeated use, but its Excessive use of low-density polyethylene in the formula will cause the local structure of the tire to be too soft in the actual use process, and will also increase the production cost, and the document does not clearly record the key invention points used- The specific formula ratio of special recycled materials

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