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1. WO2021011576 - HEAT-STABLE BIAXIALLY ORIENTED POLYPROPYLENE FILMS

Publication Number WO/2021/011576
Publication Date 21.01.2021
International Application No. PCT/US2020/042002
International Filing Date 14.07.2020
IPC
B29C 48/08 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
07Flat, e.g. panels
08flexible, e.g. films
B32B 7/12 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
7Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
04Interconnection of layers
12using interposed adhesives or interposed materials with bonding properties
B32B 15/085 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
15Layered products essentially comprising metal
04comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
08of synthetic resin
085comprising polyolefins
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 27/32 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
B29C 2948/92704
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
2948Indexing scheme relating to extrusion moulding
92Measuring, controlling or regulating
92504Controlled parameter
92704Temperature
B29C 48/0018
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
001Combinations of extrusion moulding with other shaping operations
0018combined with shaping by orienting, stretching or shrinking, e.g. film blowing
B29C 48/0022
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
001Combinations of extrusion moulding with other shaping operations
0022combined with cutting
B29C 48/08
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
07Flat, e.g. panels
08flexible, e.g. films
B29C 48/10
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
10flexible, e.g. blown foils
B29C 48/185
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
16Articles comprising two or more components, e.g. co-extruded layers
18the components being layers
185comprising six or more components, i.e. each component being counted once for each time it is present, e.g. in a layer
Applicants
  • JINDAL FILMS AMERICAS LLC [US]/[US]
Inventors
  • DABADIE, Thierry, J.L.
  • DOMINGOS, Gabriel
  • MARCHAL, Alain
  • GASTINEAU, François
Agents
  • OSTERRIEDER, Erik, J.
Priority Data
62/875,02217.07.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HEAT-STABLE BIAXIALLY ORIENTED POLYPROPYLENE FILMS
(FR) FILMS DE POLYPROPYLÈNE À ORIENTATION BIAXIALE STABLES AU CHAUFFAGE
Abstract
(EN)
In one example embodiment, disclosed is a biaxially oriented multilayer film, which may include a first tie layer and a second tie layer, wherein each has an inside surface and an outside surface. The film's core layer may consist of: (i) at least 50 wt.% high-crystalline polypropylene; (ii) both cyclic olefin copolymer and polypropylene homopolymer, or, polypropylene heterophasic copolymer; (iii) and, optionally, additives, wherein the core layer is between the inside surface of the first tie layer and the inside surface of the second tie layer. The film may also include a first skin layer on the outside surface of the first tie layer and a second skin layer on the outside surface of the second tie layer, wherein shrinkage is less than 3.5% in a transverse direction for the biaxially oriented multilayer film after subjecting the biaxially oriented multilayer film to 135°C for 7 min at 1 atm.
(FR)
Dans un mode de réalisation donné à titre d'exemple, l'invention concerne un film multicouche à orientation biaxiale, qui peut comprendre une première couche de liaison et une seconde couche de liaison, chacune ayant une surface intérieure et une surface extérieure. La couche centrale du film peut être constituée de : (i) au moins 50 % en poids de polypropylène hautement cristallin ; (ii) à la fois un copolymère d'oléfine cyclique et un homopolymère de polypropylène ou un copolymère hétérophasique de polypropylène ; (iii) et, éventuellement, des additifs, la couche centrale se trouvant entre la surface intérieure de la première couche de liaison et la surface intérieure de la seconde couche de liaison. Le film peut également comprendre une première couche de peau sur la surface extérieure de la première couche de liaison et une seconde couche de peau sur la surface extérieure de la seconde couche de liaison, le retrait étant inférieur à 3,5 % dans une direction transversale pour le film multicouche à orientation biaxiale après soumission du film multicouche à orientation biaxiale à 135 °C pendant 7 min à 1 atm.
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