US2004109963A1PendingUtilityA1
Tearable plastic film particularly for flexible packagings
Est. expiryDec 5, 2022(expired)· nominal 20-yr term from priority
B29C 48/09B29C 48/10B29C 48/21B29C 48/08B29C 48/335B29K 2105/16B29L 2007/008B29C 48/307Y10T428/31692Y10T428/1352Y10T428/31855
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Claims
Abstract
A tearable film of plastic material particularly for flexible packagings, comprising a plastic polymer that is extruded with flat-die or blown-film technologies with the addition of 1 to 50% by weight of inorganic material in powder form.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A tearable film made of plastic material, for flexible packagings, comprising a plastic polymer material that is extruded with flat-die or blown-film technologies and 1 to 50% by weight of an addition substance of inorganic material in powder form.
2 . The film of claim 1 , wherein said plastic polymer is selected from a group comprising polypropylene and polyethylene.
3 . The film of claim 1 , wherein said inorganic material is selected from a group comprising talc, calcium carbonate and kaolin.
4 . The film of claim 1 , wherein said addition substance is approximately 3-5% by weight.
5 . The film of claim 1 , laminated with a further film selected among films made of plastic materials and aluminum foil.
6 . The film of claim 1 , wherein the inorganic material constitutes an inorganic filler, the film being a three-layer coextruded film in which the inorganic filler is confined to a central layer thereof.
7 . The film of claim 1 , wherein the inorganic material constitutes an inorganic filler, the film being a two-layer coextruded film in which the inorganic filler is confined to only one of the film layers.Join the waitlist — get patent alerts
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