公开(公告)号：US20250162228A1

公开(公告)日：2025-05-22

申请号：US18846869

申请日：2023-03-16

Applicant: BOREALIS AG

Inventor： Jingbo WANG ,  Friedrich BERGER ,  Arnaud ALABRUNE ,  Chantal SEMAAN ,  Anthony BERTHELIER

IPC: B29C48/00 ,  B29C48/09 ,  B29C48/21 ,  B29K23/00 ,  B29K105/00 ,  B29L7/00 ,  B32B27/08 ,  B32B27/32 ,  B32B37/15

Abstract: The present disclosure relates to a multilayered film including a skin layer, a core layer and a sealing layer; wherein the sealing layer includes: (a) 15 to 85 wt.-% based on a total weight of the sealing layer of a specific metallocene-catalysed multimodal polyethylene copolymer; and (b) 15 to 85 wt.-% based on the total weight of the sealing layer of a specific plastomer, wherein components (a) and (b) add up to 100 wt.-%. The multilayered film can be used as a packing material, for food and/or medical products.

公开(公告)号：US20250162294A1

公开(公告)日：2025-05-22

申请号：US18839301

申请日：2022-02-17

Applicant: BOREALIS AG ,  ABU DHABI POLYMERS CO. LTD (BOROUGE) - SOLE PROPRIETORSHIP L.L.C.

Inventor： Xinrong DUAN ,  Antonios GITSAS ,  Anthony BERTHELIER ,  Chantal SEMAAN ,  Andrey BURYAK ,  Subrata Kumar DAS ,  Raghvendra SINGH ,  Mohammad AL TALAFHA ,  Peter MALMROS

IPC: B32B27/08 ,  B32B7/12 ,  B32B27/32 ,  B32B27/36 ,  B65D65/40

Abstract: The invention relates to a laminated film comprising a polyethylene sealant film comprising at least an outer layer O, an inner layer I and a core layer C, the core layer C being present between the outer layer O and the inner layer I, wherein the inner layer I is made of an inner layer composition comprising from 75 to 95 wt. % of a component AI that is a linear low density ethylene polymer having a density of from 915 to 925 kg/m3 and a melt flow rate (MFR2) of from 0.5 to 3.0 g/10 min, determined according to ISO 1133, the wt. % being based on the total weight of the inner layer composition; and a substrate film laminated to the polyethylene sealant film, wherein the substrate film comprises a polyester polymer, selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate and polytrimethylene terephthalate, and mixtures thereof; wherein the seal initiation temperature SIT (5 N) of the laminated film is less than 100° C., determined at the inner layer of the polyethylene sealant film according to ASTM F2029, ASTM F88.
The invention further relates to an article comprising the laminated film and to the use of laminated film for packaging of an article. Moreover, the invention relates to the use of the polyethylene sealant film for improving the sealing performance of a substrate film comprising a polyester polymer.