Strip shaped film anti-blocking agent and preparation method thereof

Abstract

The invention discloses a strip shaped film anti-blocking agent and a preparation method thereof. The anti-blocking agent is composed of the following components in parts by weight: 50 to 60 parts of oleamide, 36 to 46 parts of silicon dioxide, 3 to 6 parts of adhesive, 0.1 to 0.5 part of light stabilizer, and 0.3 to 1 part of antioxidant. During preparation, the adhesive is slowly sprayed on other raw materials, which are mixed and stirred, and after the raw materials are stirred for 20 minutes, the mixture is added into a dual tooth granulator to carry out cold granulation. The provided anti-blocking agent can improve the smoothness and hand feeling of the surface of a product, reduces the dynamic / static friction coefficient of the surface of the product, enables a film to have a good smooth effect and better anti-UV and anti-aging performance, enhances the anti-scratch and wear-resistant performance of a film, improves the opening performance and anti-blocking property of a film material, and also improves the precipitation problem of a film. When the strip shaped film anti-blocking agent, PE, and PP are subjected to film blowing, the anti-blocking agent can be dispersed uniformly.

Description

【Technical field】 [0001] The invention relates to a strip film opening agent and a preparation method thereof. 【Background technique】 [0002] Blocking agent is the most commonly used and indispensable additive for plastic films. Almost all plastic bags contain anti-blocking agents. Add anti-blocking agent to the plastic raw material to form a large number of raised dots on the surface of the film and sheet, forming a "bridging" phenomenon between the two layers. On the other hand, it also allows air to penetrate into the inner walls of the two layers of films along the gap between the raised spots formed by the opening agent on the surface of the film / sheet to offset the atmospheric pressure, thereby effectively preventing The bonding between films and the agglomeration between pellets can improve its antistatic, lubricating and moisture-proof properties, reduce the friction coefficient and bonding resistance, and increase the surface finish of the film to prevent dust fr...

AI Technical Summary

Problems solved by technology

[0003] However, the present anti-blocking agent generally mainly uses organic oleic acid amide or inorganic silicon dioxide. Since both oleic acid amide and silicon dioxide are powdery substances, it is not easy to stir evenly when added. When adding oleic acid amide or silicon dioxide After the mixture with plastic particles is added to the hopper, due to the vibration of the hopper, the powdery substance of oleic acid amide or silicon dioxide will fall down along the gap between the plastic particles, thereby reducing the opening agent (oleic acid amide or silicon dioxide) in the upper material. The content of silicon dioxide) will finally cause poor performance of the anti-blocking agent of the film, and the problem of precipitation will appear after a period of use.

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