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1. WO2020198195 - MULTILAYER FILMS, LAMINATES, AND ARTICLES COMPRISING MULTILAYER FILMS

Publication Number WO/2020/198195
Publication Date 01.10.2020
International Application No. PCT/US2020/024396
International Filing Date 24.03.2020
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 27/32 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
C08J 5/18 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
CPC
B32B 2250/03
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
033 layers
B32B 2250/04
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
044 layers
B32B 2250/05
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
055 or more layers
B32B 2250/24
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
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 2307/72
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
72Density
Applicants
  • DOW GLOBAL TECHNOLOGIES LLC [US]/[US]
Inventors
  • BUASZCZYK, Gianna
  • MAZZOLA, Nicolas Cardoso
  • GOMES, Jorge Caminero
  • BARBOSA, Bruno Cesar De Moraes
Agents
  • LINK, J. Jason
Priority Data
62/824,09626.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTILAYER FILMS, LAMINATES, AND ARTICLES COMPRISING MULTILAYER FILMS
(FR) FILMS MULTICOUCHES, STRATIFIÉS ET ARTICLES COMPRENANT LESDITS FILMS MULTICOUCHES
Abstract
(EN)
Embodiments of the present invention relate to multilayer films, laminates, and articles. In one aspect, a multilayer film comprises (a) a first layer comprising a first composition, wherein the first composition comprises at least one ethylene-based polymer and wherein the first composition has a density of less than 0.935 g/cm3, a melt index (I2) of less than 2.0 g/10 minutes, a MWCDI value greater than 0.9, and a melt index ratio (I10/I2) that meets the following equation: I10/I2 ≥ 7.0 - 1.2 x log (I2), wherein the first layer comprises at least 50 percent by weight of the first composition based on the weight of the first layer; (b) a second layer comprising a first polyethylene having a density of greater than 0.950 g/cm3 and a melt index (I2) of less 2.0 g/10 minutes, wherein the second layer comprises at least 40 percent by weight of the first polyethylene based on the weight of the first layer; and (c) a sealant layer, wherein the multilayer film comprises at least 29 weight percent of the first composition based on the total weight of the film, and wherein the multilayer film comprises at least 15 weight percent of the first polyethylene based on the total weight of the film.
(FR)
Des modes de réalisation de la présente invention concernent des films multicouches, des stratifiés et des articles. Selon un aspect, un film multicouche comprend (a) une première couche comprenant une première composition, la première composition comprenant au moins un polymère à base d'éthylène et la première composition ayant une densité inférieure à 0,935 g/cm3, un indice de fluidité (I2) inférieur à 2,0 g/10 minutes, une valeur MWCDI supérieure à 0,9, et un rapport d'indice de fusion (I10/I2) qui satisfait à l'équation suivante : I10/I2 ≥ 7,0 - 1,2 x log (I2), la première couche comprenant au moins 50 pour cent en poids de la première composition sur la base du poids de la première couche ; (b) une seconde couche comprenant un premier polyéthylène ayant une densité supérieure à 0,950 g/cm3 et un indice de fusion (I2) inférieur ou égal à 2,0 g/10 minutes, la seconde couche comprenant au moins 40 pour cent en poids du premier polyéthylène sur la base du poids de la première couche ; et (c) une couche d'agent d'étanchéité, le film multicouche comprenant au moins 29 pour cent en poids de la première composition sur la base du poids total du film, et le film multicouche comprenant au moins 15 pour cent en poids du premier polyéthylène sur la base du poids total du film.
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