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Medium Density Metallocene LLDPE Blended with Long Chain Branched Metallocene Polyethylene (PE) to Enhance Holding Force for Cast Stretch Films and Cast Silage Films

IP.com Disclosure Number: IPCOM000245568D
Publication Date: 2016-Mar-17
Document File: 4 page(s) / 114K

Publishing Venue

The IP.com Prior Art Database

Related People

Ya-Nan Gong: AUTHOR [+5]

Abstract

High holding force is desirable for cast stretch films and cast silage films to ensure loading stability and low air permeability. Improved holding force also provides for further down-gauging possibilities. During the study of cast stretch and silage films, it was found that when blended with long chain branched metallocene PE, medium density metallocene LLDPE achieves higher 2nd yield point based on film tensile test, which provides higher holding force at end use.

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Medium Density Metallocene LLDPE Blended with Long Chain Branched Metallocene Polyethylene (PE) to Enhance Holding Force for Cast Stretch Films and Cast Silage Films

Abstract: High holding force is desirable for cast stretch films and cast silage films to ensure loading stability and low air permeability. Improved holding force also provides for further down- gauging possibilities. During the study of cast stretch and silage films, it was found that when blended with long chain branched metallocene PE, medium density metallocene LLDPE achieves higher 2nd yield point based on film tensile test, which provides higher holding force at end use.

Background:

In recent years, the demand of cast stretch films and cast silage films is growing rapidly. One key requirement by end use is to ensure loading stability and low air permeability, which is mainly contributed by film holding force. In addition, in order to achieve higher economic efficiency, film converters tend to down-gauge film while maintaining enough loading stability. Therefore, the ability to increase holding force is becoming one of the major technical challenges to cast stretch films and cast silage films development.

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