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1. WO2020139611 - SEALED MULTILAYER STRUCTURES AND PACKAGES COMPRISING SEALED MULTILAYER STRUCTURES

Publication Number WO/2020/139611
Publication Date 02.07.2020
International Application No. PCT/US2019/066649
International Filing Date 16.12.2019
IPC
B32B 7/12 2006.1
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 27/08 2006.1
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 27/18 2006.1
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
B32B 27/20 2006.1
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
B32B 27/26 2006.1
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
26using curing agents
B32B 27/34 2006.1
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
34comprising polyamides
CPC
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 2307/31
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
30having particular thermal properties
31Heat sealable
B32B 2307/516
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
50having particular mechanical properties
514Oriented
516mono-axially
B32B 2307/54
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
50having particular mechanical properties
54Yield strength; Tensile strength
B32B 2307/558
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
50having particular mechanical properties
558Impact strength, toughness
Applicants
  • DOW GLOBAL TECHNOLOGIES LLC [US]/[US]
  • DOW CHEMICAL (MALAYSIA) SDN. BHD. [MY]/[MY]
Inventors
  • YEE, Wu Aik
  • MA, Eng Kian
  • GOH, Hwee Lun
Agents
  • LINK, J. Jason
Priority Data
PCT/MY2018/05009724.12.2018MY
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SEALED MULTILAYER STRUCTURES AND PACKAGES COMPRISING SEALED MULTILAYER STRUCTURES
(FR) STRUCTURES MULTICOUCHES ÉTANCHES ET EMBALLAGES COMPRENANT DES STRUCTURES MULTICOUCHES ÉTANCHES
Abstract
(EN)
Embodiments of the present invention relate to sealed multilayer structures, packages formed therefrom, and methods of forming packages. In one aspect, a sealed multilayer structure comprises: (a) a uniaxially oriented multilayer film having a first oriented film thickness, wherein the film is oriented in the machine direction at a draw ratio greater than 1:1 and less than 4:1, and (b) a second multilayer film comprising a sealant layer and having a second film thickness, wherein the sealant layer of the first oriented film is sealed to the sealant layer of the second film, and wherein the total thickness of the sealed films is at least 5 percent greater than the sum of the first oriented film thickness and the second film thickness.
(FR)
Selon des modes de réalisation, la présente invention concerne des structures multicouches étanches, des emballages formés à partir de ces dernières, et des procédés de formation d'emballage. Selon un aspect, une structure multicouche étanche comprend : (A) un film multicouche à orientation uniaxiale comprenant une première épaisseur de film orienté, le film étant orienté dans le sens machine selon un rapport d'étirage supérieur à 1/1 et inférieur à 4/1, et (b) un second film multicouche comprenant une couche d'agent d'étanchéité et comportant une seconde épaisseur de film, la couche d'agent d'étanchéité du premier film orienté étant scellée à la couche d'agent d'étanchéité du second film, et l'épaisseur totale des films étanches étant supérieure d'au moins 5 pour cent à la somme de la première épaisseur de film orienté et de la seconde épaisseur de film.
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