EP 1019290 A1 20000719 - UNIAXIALLY SHRINKABLE BIAXIALLY ORIENTED POLYPROPYLENE FILM AND METHOD FOR USE AS TOBACCO PACK OVERWRAP
Title (en)
UNIAXIALLY SHRINKABLE BIAXIALLY ORIENTED POLYPROPYLENE FILM AND METHOD FOR USE AS TOBACCO PACK OVERWRAP
Title (de)
MONOAXIAL SCHRUMPFBARE, BIAXIAL ORIENTIERTE POLYPROPYLENFOLIE FÜR TABAKVERPACKUNGSUMHÜLLUNG
Title (fr)
FILM DE POLYPROPYLENE A ORIENTATION BIAXIALE ET A RETRECISSEMENT UNIAXIAL, PROCEDE D'UTILISATION DE CE DERNIER EN TEMPS QUE SUREMBALLAGE POUR DES PAQUETS DE TABAC
Publication
Application
Priority
- US 9810348 W 19980521
- US 87313397 A 19970610
Abstract (en)
[origin: WO9856662A1] A uniaxially heat-shrinkable, biaxially oriented, multilayer film for use as a tobacco pack or carton overwrap having a polypropylene-containing core layer comprising at least 70 wt.% of said multilayer film and at least one polyolefin-containing skin layer adjacent said core layer is prepared by biaxially orienting a coextrudate and thereafter orienting said coextrudate by stretching 10 to 40 % in the machine direction. The core layer contains isotactic polypropylene and a modifier which reduces the crystallinity of the polypropylene-containing core. Such modifiers can be selected from the group consisting of atactic polypropylene, syndiotactic polypropylene, ethylene-propylene copolymer, propylene-butene-1 copolymer, ethylene-propylene-butene terpolymer, and linear low density polyethylene. The skin layer can be selected from the group consisting of polypropylene, ethylene-propylene copolymer, polyethylene, and ethylene-propylene-butene-1 terpolymer and contains silicone oil.
IPC 1-7
IPC 8 full level
B29C 61/06 (2006.01); B32B 7/02 (2006.01); B32B 27/32 (2006.01)
CPC (source: EP KR US)
B32B 27/08 (2013.01 - US); B32B 27/16 (2013.01 - US); B32B 27/18 (2013.01 - US); B32B 27/32 (2013.01 - EP US); B32B 38/0008 (2013.01 - US); B65B 53/02 (2013.01 - KR); B32B 2307/518 (2013.01 - US); B32B 2307/736 (2013.01 - US); B32B 2309/105 (2013.01 - US); B32B 2310/14 (2013.01 - US)
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
WO 9856662 A1 19981217; AR 015871 A1 20010530; AU 746233 B2 20020418; AU 7500098 A 19981230; BR 9809537 A 20000620; CA 2289631 A1 19981217; CN 1259099 A 20000705; EP 1019290 A1 20000719; EP 1019290 A4 20020410; ID 22959 A 19991223; JP 2002504031 A 20020205; KR 20010013586 A 20010226
DOCDB simple family (application)
US 9810348 W 19980521; AR P980102726 A 19980609; AU 7500098 A 19980521; BR 9809537 A 19980521; CA 2289631 A 19980521; CN 98805904 A 19980521; EP 98922459 A 19980521; ID 991577 A 19980521; JP 50249699 A 19980521; KR 19997011593 A 19980521