Extrusion & Post
11 visualizaciones
Metallocene linear low density polyethylene film blocking/poor opening
Fenómeno del problema
The film layers stick together and are difficult to separate, affecting subsequent processing and use.
Poor opening is particularly prominent in film winding and automatic packaging, reducing production efficiency.
Análisis de la causa
（1） Metallocene linear low density polyethylene film has high surface tension and large interlayer adhesion\
（2） Film wound up at too high temperature, cooling insufficient\
（3） Winding tension too large\
（4） Lack of anti-blocking agent\
（5） Film thickness too thin, more prone to blocking
Solución
（1） Add an appropriate amount of anti-blocking agent （such as silica fine powder 0.1-0.5%）\
（2） Ensure the film is fully cooled before winding, winding temperature not exceeding 40°C\
（3） Appropriately reduce winding tension\
（4） Add an appropriate amount of slip agent （such as oleamide 0.1-0.3%） to reduce surface friction\
（5） Control film thickness within a reasonable range
Conclusión clave
Film blocking is caused by surface tension and temperature, and needs to be solved by adding anti-blocking agents and controlling winding conditions.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!