Oxygen-inhaling type casting polypropylene semi-cooked film
A technology for casting polypropylene and polypropylene, applied in the field of plastic films, can solve the problems of increased oxygen concentration, oxygen residue, accidental ingestion, etc.
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[0010] The specific embodiment of the present invention will be described below in conjunction with accompanying drawing, as figure 1 Shown: an oxygen-absorbing cast polypropylene semi-cooked film, characterized in that: the film is a three-layer structure, followed by an oxygen-absorbing layer 1, an intermediate layer 2 and a heat-sealing layer 3 from top to bottom, the above-mentioned The three-layer structure is prepared by co-extrusion casting process, in which the oxygen-absorbing layer 1 contains 20-60% random copolymerized polypropylene and 40-80% iron-containing oxygen-absorbing masterbatch, and the middle layer 2 contains 85-100% Random copolymerized polypropylene and 0-15% polyolefin elastomer, heat seal layer 3 contains 81-99.5% random copolymerized polypropylene, 0-15% polyolefin elastomer and 0.5-4% slip resistance Adhesion masterbatch, the above proportions are all percentages by mass, wherein the thickness of the oxygen absorbing layer 1 is greater than 20 micro...
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