Global Patent Index - EP 1019290 A1

EP 1019290 A1 2000-07-19 - 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

EP 1019290 A1 (EN)

Application

EP 98922459 A

Priority

  • US 9810348 W
  • US 87313397 A

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 (main, further and additional classification)

B65B 53/02; B32B 27/32

IPC 8 full level (invention and additional information)

B29C 61/06 (2006.01); B32B 7/02 (2006.01); B32B 27/32 (2006.01)

CPC (invention and additional information)

B32B 27/32 (2013.01)

Designated contracting state (EPC)

BE DE ES FR GB IT NL

EPO simple patent family

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

INPADOC legal status


2005-06-01 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20041202

2002-04-10 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20020227

2002-04-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): BE DE ES FR GB IT NL

2001-10-31 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: EXXONMOBIL OIL CORPORATION

2000-07-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991122

2000-07-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE ES FR GB IT NL