Extrusion & Post
8 조회수
Polyolefin plastomer film blocking/poor opening property
문제 현상
The film layers stick together and are difficult to separate, affecting subsequent processing and use.
Poor opening property is particularly prominent in film winding and automatic packaging, reducing production efficiency.
원인 분석
（1）The polyolefin plastomer film has high surface tension and large interlayer adhesion
（2）The film is wound at too high a temperature and the cooling is insufficient
（3）The winding tension is too large
（4）Lack of anti-blocking agent
（5）The film is too thin and more likely to stick
해결 방법
（1）Add an appropriate amount of anti-blocking agent (such as silica powder 0.1-0.5%)
（2）Ensure the film is fully cooled before winding, and the winding temperature does not exceed 40°C
（3）Appropriately reduce the winding tension
（4）Add an appropriate amount of slip agent (such as oleamide 0.1-0.3%) to reduce surface friction
（5）Control the film thickness within a reasonable range
핵심 요약
Film blocking is caused by surface tension and temperature, and needs to be solved by adding anti-blocking agents and controlling winding conditions.
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