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1. WO2004009344 - MULTILAYER IN-MOLD FILM

Publication Number WO/2004/009344
Publication Date 29.01.2004
International Application No. PCT/US2003/017241
International Filing Date 02.06.2003
IPC
B32B 27/08 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
06as the main or only constituent of a layer next to another layer of a specific substance
08of synthetic resin of a different kind
B32B 27/20 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
18characterised by the use of special additives
20using fillers, pigments, thixotroping agents
CPC
B32B 2038/0028
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
38Ancillary operations in connection with laminating processes
0012Mechanical treatment, e.g. roughening, deforming, stretching
0028Stretching, elongating
B32B 2038/0048
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
38Ancillary operations in connection with laminating processes
0036Heat treatment
0048Annealing, relaxing
B32B 2307/41
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
41Opaque
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
B32B 27/20
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
18characterised by the use of special additives
20using fillers, pigments, thixotroping agents
Applicants
  • AVERY DENNISON CORPORATION [US]/[US]
Inventors
  • MIENTUS, Bernard, S.
  • KOVALCHUK, John
Agents
  • DUCHEZ, Neil, A.
Priority Data
10/198,06118.07.2002US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTILAYER IN-MOLD FILM
(FR) FILM MULTICOUCHE DANS LE MOULE
Abstract
(EN)
This invention relates to a multilayered film for use as in-mold label, comprising: a core layer having a first surface and a second surface, the core layer being comprised of a polymeric material and particulate solids dispersed in the polymeric material; and a first skin layer overlying the first surface of the core layer; the film being formed by co-extruding the core layer and first skin layer to form the multilayered film, hot-stretching the film at a temperature above the expected service temperature of the label to provide the film with a machine direction orientation, the density of the film being reduced by about 5% to about 25% during hot-stretching, and annealing the film at a temperature above the expected service temperature of the label; the film having a machine direction Gurley stiffness value in the range of about 30 to about 120, a machine direction shrinkage of less than about 2%, and a machine direction shrink tension at 200°F (93.3°C) of less than about 100 psi.
(FR)
Cette invention concerne un film multicouche à utiliser comme étiquette dans le moule. Ce film comprend une couche centrale présentant une première surface et une seconde surface, laquelle couche centrale est constituée d'un matériau polymère et de particules solides dispersées dans ce matériau polymère, ainsi qu'une première couche d'enveloppe recouvrant la première surface de ladite couche centrale. Ce film est formé selon un procédé consistant à co-extruder la couche centrale et la première couche d'enveloppe jusqu'à l'obtention du film multicouche, à étirer à chaud ce film à une température supérieure à la température de service prévue de ladite étiquette de façon à fournir à ce film une orientation en sens machine, la densité dudit film étant réduite d'au moins environ 5 % à environ 25 % pendant l'étirage à chaud, puis à recuire ce film à une température supérieure à la température de service prévue de l'étiquette. Ce film présente une valeur de rigidité Gurley en sens machine comprise entre environ 30 et environ 120, un retrait en sens machine inférieur à environ 2 % et une tension de retrait en sens machine à 200 °F (93,3 °C) inférieure à environ 100 psi.
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