IMPROVED MULTILAYER BLOWN FILMS

Coextruded multilayer blown films are produced comprising: a core layer comprising at least one random polypropylene copolymer; at least one skin or intermediate layer adjacent to said core layer; wherein the coextruded multilayer film has at least about 30% higher machine direction tear, at least a...

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Bibliographic Details
Main Author FALLA DANIEL J
Format Patent
LanguageEnglish
Korean
Published 22.09.2015
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:Coextruded multilayer blown films are produced comprising: a core layer comprising at least one random polypropylene copolymer; at least one skin or intermediate layer adjacent to said core layer; wherein the coextruded multilayer film has at least about 30% higher machine direction tear, at least about 30% improved tear ratio (machine direction tear divided by transverse direction tear) and at least about 10% lower film haze, relative to a similar multilayer film comprising at least one impact polypropylene copolymer in the core layer.
Bibliography:Application Number: KR20157022186