公开(公告)号：US20210206928A1

公开(公告)日：2021-07-08

申请号：US17206918

申请日：2021-03-19

Applicant: Dow Global Technologies LLC

Inventor： Yijian Lin ,  Mehmet Demirors ,  Jianping Pan ,  Xiao B. Yun

IPC: C08J5/18 ,  B32B27/32 ,  B32B27/08 ,  B29C48/21 ,  B32B27/20 ,  B29C48/08 ,  B32B27/16 ,  C08L23/06

Abstract: A first oriented film comprising a first polyethylene composition which comprises: from 20 to 50 wt % of a first linear low density polyethylene polymer having a density greater than 0.925 g/cc and an 12 lower than 2 g/10min; and from 80 to 50 wt % of a second linear low density polyethylene polymer having a density lower than or equal to 0.925 g/cc and an 12 greater than or equal to 2 g/10min; wherein the first polyethylene composition has an 12 from 0.5 to 10 g/10min and a density from 0.910 to 0.940 g/cc is provided.

公开(公告)号：US10792899B2

公开(公告)日：2020-10-06

申请号：US16325888

申请日：2017-08-14

Applicant: Dow Global Technologies LLC

Inventor： Jianping Pan ,  Xiao Bing Yun ,  Yijian Lin ,  Rongjuan Cong

IPC: B32B27/08 ,  B32B27/32 ,  B29C48/00 ,  B32B27/34 ,  B32B7/02 ,  B32B7/00 ,  B32B27/30 ,  B32B27/36 ,  B29C48/21 ,  B29C55/00 ,  B29C55/16 ,  B29L7/00 ,  B29L9/00 ,  B29L31/00

Abstract: Embodiments of the present invention relate to biaxially oriented, multilayer polyethylene films and to laminates and articles formed therefrom. In one aspect, a biaxially oriented, multilayer polyethylene film comprises Layer A which is a sealant layer p having a top facial surface and a bottom facial surface and comprising a first polyethylene, wherein the first polyethylene has a density of at least 0.900 g/cm3, an IHDF>95 of 20-60 kg/mol, and a MWHDF>95 of greater than 130 kg/mol, wherein Layer A comprises at least 50 weight percent of the first polyethylene based on the weight of Layer A, and Layer B having a top facial surface and a bottom facial surface, wherein Layer B comprises one or more additional polyethylenes, and wherein the top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A, wherein the density of the first polyethylene is at least 0.002 g/cm3 less than the density of Layer B.

公开(公告)号：US20250026106A1

公开(公告)日：2025-01-23

申请号：US18712002

申请日：2021-11-25

Applicant: Dow Global Technologies LLC

Inventor： Zhe Du ,  Jianping Pan ,  Xiaobing Yun ,  Shijun Wang ,  Jingyi Xu ,  Hong Yang

IPC: B32B7/022 ,  B29C55/14 ,  B29K23/00 ,  B29K105/00 ,  B32B27/08 ,  B32B27/32

Abstract: A biaxially oriented multilayer film having a core layer that includes a polyethylene-based composition. The core layer has: a melt index (I2) that is from 0.2 g/10 min to 5.0 g/10 min; a density that is between 0.930 g/cm3 and 0.956 g/cm3; and an average short chain branch (SCB) level in the portion between log (Mw) of 4.0 to 5.0 (SCBlogMw4-5) that is greater than 3.5 SCB/1000c and less than 10.0 SCB/1000 C. The biaxially oriented multilayer film also includes at least one additional layer that includes a propylene-based composition.

公开(公告)号：US11485840B2

公开(公告)日：2022-11-01

申请号：US16470695

申请日：2017-01-11

Applicant: Dow Global Technologies LLC

Inventor： Andong Liu ,  Guihong Liao ,  Jianping Pan ,  Peng Gao ,  Hongyu Chen ,  Yi Zhang

IPC: C08L23/08 ,  B32B5/02 ,  B32B15/082 ,  B32B15/20 ,  B32B27/08 ,  B32B27/12 ,  B32B27/30 ,  B32B27/32 ,  B32B27/34 ,  B32B37/15 ,  C08J5/12 ,  C08J5/18

Abstract: The present invention provides polymer blends that can be used in a multilayer structure and to multilayer structures comprising one or more layers formed from such blends. In one aspect, a polymer blend comprises (a) a copolymer comprising ethylene and at least one of acrylic acid and methacrylic acid having an acid content of 2 to 21 weight percent based on the weight of the copolymer, wherein the amount of copolymer (a) comprises 20-80 weight percent of the blend based on the total weight of the blend, and (b) a copolymer comprising ethylene and at least one of methyl acrylate and ethyl acrylate having an acrylate content of 5 to 30 weight percent based on the weight of the copolymer, wherein the amount of copolymer (b) comprises 10 to 50 weight percent of the blend based on the total weight of the blend, wherein the amount of copolymer (a) and copolymer (b) is at least 70 weight percent of the blend based on the total weight of the blend.

公开(公告)号：US11376830B2

公开(公告)日：2022-07-05

申请号：US17252955

申请日：2019-05-17

Applicant: Dow Global Technologies LLC

Inventor： Gang Wang ,  Xiaobing Yun ,  Jianping Pan ,  Jingyi Xu

IPC: B32B27/32 ,  B32B7/03 ,  B32B27/08 ,  B32B27/30 ,  B32B27/18 ,  B32B27/20 ,  B32B1/00

Abstract: A biaxially-oriented polyethylene (BOPE) multilayer film comprises a skin layer with a matte surface and a core, the skin layer with a matte surface comprising, in weight percent (wt %) based upon the weight of the skin layer: (1) from 20 to 80 wt % of an ethylene-based polymer, and (2) from 80 to 20 wt % of a propylene-based polymer; each of the ethylene-based polymer and the propylene-based polymer having a storage modulus, with a difference between the storage modulus of the ethylene-based polymer and the propylene-based polymer of greater than 40 megaPascals (MPa) at 110° C., and greater than 18 MPa at 120° C.

公开(公告)号：US11338563B2

公开(公告)日：2022-05-24

申请号：US16620170

申请日：2017-06-09

Applicant: Dow Global Technologies LLC

Inventor： Fengyi Su ,  Andong Liu ,  Hongyu Chen ,  Jianping Pan ,  Xiao Bing Yun ,  Thomas Allgeuer ,  Erqiang Chen ,  Tipeng Zhao ,  Guihong Liao

IPC: B32B27/32 ,  B32B7/12 ,  B32B27/08 ,  B32B27/16 ,  B32B27/36 ,  C08K5/092 ,  C08K5/20

Abstract: Provided is a coextruded multilayer film. The coextruded multilayer film has at least two layers, including a sealant layer and a second layer in contact with the sealant layer. The sealant layer contains (A) a first ethylene-based polymer having a density from 0.865 g/cc to 0.930 g/cc and a melt index from 0.5 g/10 min to 25 g/10 min; (B) an unsaturated primary fatty acid amide having a melting point of 100° C. or less; and (C) a diprotic fatty acid having a melting point greater than 100° C. and a decomposition temperature greater than 200° C. The second layer contains a second ethylene-based polymer. Also provided is a laminate containing said sealant layer.

公开(公告)号：US20220088886A1

公开(公告)日：2022-03-24

申请号：US17418028

申请日：2018-12-28

Applicant: Dow Global Technologies LLC

Inventor： Zhe Du ,  Gang Wang ,  Xiaobing Yun ,  Jianping Pan ,  Jingyi Xu

IPC: B29C65/24 ,  B29C65/00 ,  B29C65/48

Abstract: The present disclosure is concerned with a method of forming a seal with a polyethylene based film structure. The polyethylene based film structure has at least one layer formed with an oriented polyethylene having a predetermined melting temperature (Tm). A conductive heat sealing device provides heat to form the seal, where a first sealing bar of the conductive heat sealing device operates at a first operating temperature of at least 10 degrees Celsius (° C.) below the Tm of the oriented polyethylene in the polyethylene based film structure and a second sealing bar of the conductive heat sealing device operates at a second operating temperature of at least 15° C. higher than the operating temperature of the first sealing bar. The seal formed with the polyethylene based film structure retains at least 99 percent of its original surface area prior to forming the seal.

公开(公告)号：US20220080709A1

公开(公告)日：2022-03-17

申请号：US17421160

申请日：2020-01-21

Applicant: Dow Global Technologies LLC ,  Performance Materials NA, Inc.

Inventor： Jianping Pan ,  Luis Duque ,  Karlheinz Hausmann ,  Barry Alan Morris ,  Thomas Galatik

IPC: B32B27/08 ,  B32B27/32 ,  B32B27/36 ,  C08L23/06

Abstract: A multilayer structure includes an oriented polyethylene film and a barrier layer disposed on at least one surface of the oriented polyethylene film. The oriented polyethylene film comprises at least one layer having a polymer blend of at least one ethylene-based polymer and at least one ethylene acid copolymer. The ethylene-based polymer has a density of 0.910 to 0.960 g/cm3 and a melt index (I2) of 0.3 to 10 g/10 mins. The ethylene acid copolymer is the polymerized reaction product of ethylene monomer, monomer selected from the group consisting of monocarboxylic acids, dicarboxylic acids, anhydrides, and monoesters thereof, and optionally alkyl acrylate monomer. From 0 to 90 mol. % of total acid units of the ethylene acid copolymer may be neutralized with a neutralizing salt solution.

公开(公告)号：US20210078315A1

公开(公告)日：2021-03-18

申请号：US16620170

申请日：2017-06-09

Applicant: Dow Global Technologies LLC

Inventor： Fengyi Su ,  Andong Liu ,  Hongyu Chen ,  Jianping Pan ,  Xiao Bing Yun ,  Thomas Allgeuer ,  Erqiang Chen ,  Tipeng Zhao ,  Guihong Liao

IPC: B32B27/32 ,  C08K5/20 ,  C08K5/092 ,  B32B27/36 ,  B32B7/12 ,  B32B27/08 ,  B32B27/16

Abstract: Provided is a coextruded multilayer film. The coextruded multilayer film has at least two layers, including a sealant layer and a second layer in contact with the sealant layer. The sealant layer contains (A) a first ethylene-based polymer having a density from 0.865 g/cc to 0.930 g/cc and a melt index from 0.5 g/10 min to 25 g/10 min; (B) an unsaturated primary fatty acid amide having a melting point of 100° C. or less; and (C) a diprotic fatty acid having a melting point greater than 100° C. and a decomposition temperature greater than 200° C. The second layer contains a second ethylene-based polymer. Also provided is a laminate containing said sealant layer.

公开(公告)号：US20200040442A1

公开(公告)日：2020-02-06

申请号：US16495467

申请日：2018-04-23

Applicant: Dow Global Technologies LLC

Inventor： Gang Wang ,  Jingyi Xu ,  Jianping Pan ,  Xiao Bing Yun

IPC: C23C14/20 ,  C23C14/24 ,  B65D65/42

Abstract: The present invention provides multilayer structures and articles formed from such structures. In one aspect, a multilayer structure comprises (a) a biaxially oriented polyethylene film comprising an outer layer that comprises a first polyethylene composition comprising at least two linear low density polyethylenes, wherein the first polyethylene composition has a density of 0.910 to 0.940 g/cm3, an MWHDE>95 greater than 135 kg/mol and an IHDE>95 greater than 42 kg/mol, wherein the film has a thickness of 10 to 60 microns after orientation; and (b) a metal layer comprising a metal deposited on the outer layer, wherein the metal comprises Al, Zn, Au, Ag, Cu, Ni, Cr, Ge, Se, Ti, Sn, or oxides thereof, and wherein the multilayer structure has an optical density of 1.0 to 3.6, wherein the multilayer structure has a 2% secant modulus of at least 300 MPa in the machine direction when measured according to ASTM D882, and wherein the multilayer structure has an oxygen gas transmission rate of 350 cc/[m2-day] or less when measured according to ASTM D3985-05. Embodiments of the present invention also relate to processes for manufacturing multilayer structures.