ADVERTISEMENT FEATURE
Processing Optimization for Polyolefin Films Hiformer™ Liquid Additives for Polyolefins
Demand for various packaging applications such as food, industrial, personal care, and homecare continues to rise, resulting in a sharply growing need for polyolefin flexible film to help packaging protect products. Polyolefin flexible film is a popular choice to meet this demand because it helps lower the use of fossil fuels and water, and can also help reduce greenhouse gas emissions compared to rigid packaging alternatives.
However, the manufacturers of these films (and all films) need help meeting these demands, including optimizing processes and improving overall productivity. Here, Hiformer™ Liquid Additives for Polyolefins can help these manufacturing processes.
Shark skin surfaces can be reduced using polymer process aids (PPA) to reduce the velocity difference between die center and wall
For polyethylene/polypropylene (PE/ PP) film producers, melt fracture (surface roughness/shark skin effect) is a common issue that can have a negative impact on productivity and
Hiformer™ Liquid Additives for Polyolefins have demonstrated better performance to eliminate melt fracture compared to solid PPA.
film aesthetics. This is because of the significant velocity difference from the center of the melt to the die wall. Hence, processing aid additives are needed to eliminate the melt fracture issue by coating the metal surface and die wall. When coated on surfaces, processing aid additives can act as a lubricant, reducing interfacial tension. As a result, this can help reduce the velocity difference from the center to the die wall. The polymer tends to remove the processing aid additives from the wall – this means optimum processing aid is needed to maintain the coating to ensure better aesthetics and glossiness of polyolefin films.
In addition, during polyolefin film production with either cast film or blown film processes, PE/PP film producers also often encounter the
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