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1. WO2020094643 - CO-EXTRUDED MULTILAYER STRUCTURE AND METHOD FOR OBTAINING THEREOF

Publication Number WO/2020/094643
Publication Date 14.05.2020
International Application No. PCT/EP2019/080242
International Filing Date 05.11.2019
IPC
B32B 7/04 2019.01
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
B32B 27/36 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
36comprising polyesters
B32B 37/00 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
37Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
B32B 38/00 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
38Ancillary operations in connection with laminating processes
CPC
B32B 2250/02
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
022 layers
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 2264/02
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
2264Composition of particles which form a particulate layer or are present as additives
02Synthetic macromolecular particles
B32B 2264/10
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
2264Composition of particles which form a particulate layer or are present as additives
10Inorganic particles
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 2307/514
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
Applicants
  • KLONER S.L. [ES]/[ES]
Inventors
  • CAMPOS BECEIRO, Alberto
Agents
  • VIDAL, Maria Mercé
Priority Data
18382787.205.11.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CO-EXTRUDED MULTILAYER STRUCTURE AND METHOD FOR OBTAINING THEREOF
(FR) STRUCTURE MULTICOUCHE CO-EXTRUDÉE ET SON PROCÉDÉ D'OBTENTION
Abstract
(EN)
The present invention is directed to a novel co-extruded multilayer structure that possess a draw down ratio superior than the critical draw-down ratio of each one of the polymeric layers, extruded individually. The present invention is also directed to a method for obtaining the coextruded multilayer structure. The co-extruded multilayer structure obtainable by the method described herein allows preparing films, filaments or spun-melt non-wovens of low weight at high speed using conventional extrusion equipments. The co-extruded multilayer structure is especially suitable as diaper back-sheets or flexible packaging coatings.
(FR)
La présente invention concerne une nouvelle structure multicouche co-extrudée qui possède un rapport d'étirage supérieur au rapport d'étirage critique de chacune des couches polymères, extrudée individuellement. La présente invention concerne également un procédé permettant d'obtenir la structure multicouche co-extrudée. La structure multicouche co-extrudée pouvant être obtenue par le procédé de la présente invention permet de préparer des films, des filaments ou des non-tissés filés par fusion de faible poids à grande vitesse à l'aide d'équipements d'extrusion classiques. La structure multicouche co-extrudée est particulièrement appropriée pour des feuilles arrière de couche ou des revêtements d'emballage souples.
Latest bibliographic data on file with the International Bureau