EP 1877251 A1 20080116 - HIGH-STRENGTH POLYPROPYLENE-BASE BARRIER FILM FOR PACKING PURPOSES, METHOD FOR THE PRODUCTION AND THE USE THEREOF
Title (en)
HIGH-STRENGTH POLYPROPYLENE-BASE BARRIER FILM FOR PACKING PURPOSES, METHOD FOR THE PRODUCTION AND THE USE THEREOF
Title (de)
HOCHFESTE BARRIEREFOLIE FÜR VERPACKUNGSZWECKE AUF POLYPROPYLENBASIS, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG
Title (fr)
FEUILLE BARRIERE TRES RESISTANTE DESTINEE A DES FINS D'EMBALLAGE A BASE DE POLYPROPYLENE, PROCEDES DE FABRICATION ET UTILISATIONS
Publication
Application
Priority
- EP 2006001659 W 20060223
- DE 102005020913 A 20050504
Abstract (en)
[origin: DE102005020913B3] The multilayer foil is produced by simultaneous stretching of a coextruded multilevel primary foil and the functional layer: comprises an amorphous or semicrystalline polyamide or mixture of the polyamide with ethylene-vinyl alcohol copolymers; exhibits a moralization or SiO x or AlO x ceramic coating; and has oxygen permeability with 23[deg]C and 75 % relative air humidity under 0.20 cm 3>/(m 2>datm), and steam permeability under 38[deg]C, 90% relative air humidity under 0.5 g (m 2>datm). The stretched layer (thickness of 8-80 mu m) exhibits a thermo plastic layer for corona/plasma treatment and the heat-sealable thermoplastic external layer. The interior layer is arranged between the stretched layers. The detention layers (75 wt% of polypropylene) are formed on the barrier layer (thickness of 0.5-10 mu m) and modified by mixing with an anhydride-modified polyamide, a polyethylene copolymer or an anhydride-modified acrylate resin. The stretched layer and/or the detention layer contain mineral or organic additives for the formation of microcavities, fillers, absorbents, UV and light protective, coloring and covering pigments. An independent claim is also included for production of multilayer barrier foil.
IPC 8 full level
B32B 27/32 (2006.01); B29C 55/02 (2006.01); B29C 55/16 (2006.01); B32B 27/30 (2006.01); B32B 27/34 (2006.01)
CPC (source: EP US)
B29C 55/023 (2013.01 - EP US); B29C 55/16 (2013.01 - EP US); B32B 27/30 (2013.01 - EP US); B32B 27/306 (2013.01 - EP US); B32B 27/32 (2013.01 - EP US); B32B 27/34 (2013.01 - EP US); B29K 2023/12 (2013.01 - EP US); B29K 2029/04 (2013.01 - EP US); B29K 2077/00 (2013.01 - EP US); B32B 2250/03 (2013.01 - EP US); B32B 2250/05 (2013.01 - EP US); B32B 2250/24 (2013.01 - EP US); B32B 2250/40 (2013.01 - EP US); B32B 2270/00 (2013.01 - EP US); B32B 2307/31 (2013.01 - EP US); B32B 2307/724 (2013.01 - EP US); B32B 2307/7244 (2013.01 - EP US); B32B 2307/7246 (2013.01 - EP US); Y10T 428/269 (2015.01 - EP US); Y10T 428/31757 (2015.04 - EP US)
Citation (search report)
See references of WO 2006117034A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102005020913 B3 20060803; EP 1877251 A1 20080116; EP 2484520 A1 20120808; JP 2008540156 A 20081120; US 2009053513 A1 20090226; US 2011300363 A1 20111208; WO 2006117034 A1 20061109
DOCDB simple family (application)
DE 102005020913 A 20050504; EP 06723090 A 20060223; EP 12166182 A 20060223; EP 2006001659 W 20060223; JP 2008509310 A 20060223; US 201113137451 A 20110817; US 91979006 A 20060223