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1. WO2007085283 - TRANSPARENT, STIFF AND PRINTABLE POLYPROPYLENE BLOWN FILMS

Publication Number WO/2007/085283
Publication Date 02.08.2007
International Application No. PCT/EP2006/010983
International Filing Date 16.11.2006
IPC
B32B 27/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
32comprising polyolefins
CPC
B32B 2250/242
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
24All layers being polymeric
242All polymers belonging to those covered by group B32B27/32
B32B 2270/00
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2270Resin or rubber layer containing a blend of at least two different polymers
B32B 2307/412
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2307Properties of the layers or laminate
40having particular optical properties
412Transparent
B32B 2307/75
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2307Properties of the layers or laminate
70Other properties
75Printability
B32B 2519/00
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2519Labels, badges
B32B 27/08
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products comprising ; a layer of; synthetic resin
06as the main or only constituent of a layer, ; which is; next to another layer of ; the same or of; a ; different material
08of synthetic resin
Applicants
  • RKW AG [DE]/[DE] (AllExceptUS)
  • GREFENSTEIN, Achim [DE]/[DE] (UsOnly)
  • MÄKITALO, Tapio [FI]/[FI] (UsOnly)
  • HERRANEN, Marita [FI]/[FI] (UsOnly)
Inventors
  • GREFENSTEIN, Achim
  • MÄKITALO, Tapio
  • HERRANEN, Marita
Agents
  • WAGNER, Jutta
Priority Data
06 001 711.827.01.2006EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TRANSPARENT, STIFF AND PRINTABLE POLYPROPYLENE BLOWN FILMS
(FR) FEUILLES SOUFFLÉES DE POLYPROPYLÈNE TRANSPARENTES, RIGIDES ET IMPRIMABLES
Abstract
(EN)
The invention relates to transparent and stiff, not stretched, coextruded polypropylene blown films with ink-printable skin layer(s) bonded to the base or core layer without intermediate layers, whereby the core layer or base layer comprises at least 50 % of of at least one of a polypropylene homopolymer, a polypropylene random copolymer or a heterophasic polypropylene copolymer and the skin layer(s) consists (consist) of either a mixture of at least 50% of low density polyethylene and at least 10 % metallocene linear low density polyethylene and up to 5 % of common additives or a polypropylene random copolymer with a MFI between 0.8 and 3.0 g/10 min (ISO1133 at 230°C, 2.16 kg) mixed with up to 50% of a low density polyethylene, linear low density polyethylene or metallocene linear low density polyethylene, MFI 0,5 to 3,5 g/10min, and up to 5 % common additives. The films are useful for label applications and for lamination.
(FR)
L'invention concerne des feuilles soufflées de polypropylène co-extrudées, non étirées, superficielles transparentes et rigides, ayant une ou plusieurs couches centrale imprimables à l'encre collées à la couche de base ou centrale sans couches intermédiaires, la couche ou la couche de base comprenant au moins 50 % d'au moins l'un d'un homopolymère de polypropylène, d'un copolymère aléatoire du polypropylène ou d'un copolymère du polypropylène à plusieurs phases hétérogènes, et la ou les couches superficielles étant constituées soit d'un mélange d'au moins 50 % de polyéthylène basse densité et d'au moins 10 % de polyéthylène basse densité linéaire métallocène et de jusqu'à 5 % d'additifs courants, soit d'un copolymère du polypropylène aléatoire ayant un indice de fluidité à chaud MFI compris entre 0,8 et 3,0 g/10 min (ISO 1133 à 230°C, 2,16 kg) mélangé avec jusqu'à 50 % d'un polyéthylène basse densité, d'un polyéthylène basse densité linéaire ou d'un polyéthylène basse densité linéaire métallocène, ayant un MFI de 0,5 à 3,5 g/10 min, et de jusqu'à 5 % d'additifs courants. Les feuilles sont utiles pour des applications d'étiquettes et pour la stratification.
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