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Polypropylene film has a very important position in plastic flexible packaging, occupying most of the market share.
Biaxially oriented polypropylene film and cast polypropylene film are the two most important varieties of polypropylene film.
Biaxially oriented polypropylene film equipment The investment is large, plus the investment in the early stage, the market saturation is high, and it is in the stage of slow development, while the equipment investment of cast polypropylene film is small, and the flexibility is high, which is favored by more enterprises, from the production of resin The number of downstream application manufacturers is gradually increasing
.
The main variety of cast film is three-layer co-extrusion cast film, its structure is divided into corona layer, support layer and heat seal layer, corona layer and heat seal layer are mainly binary or ternary copolymer polypropylene, due to the copolymerization molecules.
Due to the structure, usually the copolymer of the surface layer has high viscosity and high friction coefficient, which affects the speed of the roller and the performance of the opening of the film bag during the processing.
The problem can be solved by adding some small molecules.
However, the migration of small molecules affects the performance of aluminizing and printing
.
As a global leader in plastic additives, BASF's Irgastab® IS 1108 product is based on BASF's product portfolio.
By leveraging its expertise in processing and functional additives, it innovatively solves the above-mentioned problems in cast film.
problem, its advantages are:
1) Irgastab® IS 1108, less addition, better reduce the friction coefficient of the film
2) Good processability and lower color
3) Suitable for food packaging
COF is the coefficient of friction of the film.
The smaller the value, the smaller the coefficient of friction and the better the smoothness of the opening.
YI is the yellowness index, the larger the resin, the more yellow the color
.
Irgastab® IS 1108 is primarily used in ethylene-propylene binary copolymers and ethylene-propylene-butene terpolymers and provides excellent optical properties, aperture properties, and processability
.
