Global patent index - EP 0977665 A1

EP 0977665 A1 2000-02-09 - MULTI-LAYERED STRETCHED HOT-SEALABLE POLYPROPYLENE FILM WITH A POLYKETONE GAS BARRIER LAYER

Title (en)

MULTI-LAYERED STRETCHED HOT-SEALABLE POLYPROPYLENE FILM WITH A POLYKETONE GAS BARRIER LAYER

Title (de)

MEHRSCHICHTIGE, GERECKTE, HEISSSIEGELBARE POLYPROPYLENFOLIE MIT POLYKETON-GASSPERRSCHICHT

Title (fr)

FILM EN POLYPROPYLENE MULTICOUCHE, THERMOSOUDABLE, ETIRE, MUNI D'UNE COUCHE DE BARRAGE AU GAZ EN POLYCETONE

Publication

EP 0977665 A1 (DE)

Application

EP 98922756 A

Priority

  • DE 19718199 A
  • EP 9802348 W

Abstract (en)

[origin: DE19718199A1] The invention relates to a heat-sealable composite film with a biaxially stretched polypropylene base layer, a modified polyolefin adhesion-promoting layer, an ethylene and carbon monoxide copolymer gas barrier layer and an olefin polymer heat-seal layer. The base layer has optionally at least one monoaxially oriented layer combination on at least on one of its surfaces, comprising: A) an olefinic homo, co or terpolymer heat-sealable outer layer; B) a modified polyolefin adhesion-promoting layer; C) a one or more olefin or carbon monoxide (polyketone) gas barrier layer; D) a modified polyolefin adhesion-promoting layer and E) a polyethylene layer and an ethylene polymer with at least 3 wt. % ethylene. The base layer has optionally layer A, a combination of layers A-E, A-D or B and C on at least one of its surfaces.

IPC 1-7 (main, further and additional classification)

B32B 27/28; B29D 7/01; B32B 27/32

IPC 8 full level (invention and additional information)

B32B 27/32 (2006.01); C08J 7/04 (2006.01)

CPC (invention and additional information)

C08J 7/04 (2013.01); B32B 27/32 (2013.01); C08J 2323/12 (2013.01); C08J 2423/02 (2013.01)

Citation (search report)

See references of WO 9849006A1

Designated contracting state (EPC)

AT BE DE ES FR GB IT LU NL

EPO simple patent family

DE 19718199 A1 19981105; AU 7527998 A 19981124; BR 9809372 A 20000704; CA 2288158 A1 19981105; EP 0977665 A1 20000209; WO 9849006 A1 19981105

INPADOC legal status

2001-05-02 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20010306

2000-02-09 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991130

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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