公开(公告)号：US20190299517A1

公开(公告)日：2019-10-03

申请号：US16435935

申请日：2019-06-10

Applicant: Dow Global Technologies LLC

Inventor： Xiao Bing Yun ,  Rongjuan Cong ,  Jianping Pan ,  Teresa P. Karjala

IPC: B29C55/00 ,  B32B27/32 ,  B32B27/34 ,  B29C55/14 ,  B32B7/02 ,  C08J5/18 ,  C08L23/08 ,  B32B15/20 ,  B29C48/00 ,  B32B15/08 ,  B32B27/16 ,  B32B27/10 ,  B32B27/08 ,  B32B27/36

Abstract: The present invention discloses a process for forming a biaxially oriented film. The process includes first selecting a polyolefin resin wherein said polyolefin resin comprises a linear low density polyethylene resin characterized by having from 9 to 35 weight percent of the total weight of linear low density polyethylene resin eluting from a CEF at a temperature greater than 97.0° C.; and further characterized by having a CDR of from 33 to 80 and a Mw Ratio of from 0.15 to 0.45. Next a film is formed from the polyolefin resin selected in the first step. Finally the film formed in the second step is oriented in a sequential manner. The films produced by this process are characterized by having an ultimate elongation at least 1.5 times greater in the MD as compared to the CD and the 2% secant modulus is a least 1.25 times greater in the CD as compared to the MD. The films are further characterized by having free residual shrinkage of less than 10% in the MD and less than 10% in the CD when exposed to a temperature of 90° C. for 10 minutes.

公开(公告)号：US20190210333A1

公开(公告)日：2019-07-11

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 ,  B29C48/21 ,  B29C55/00 ,  B29C55/16

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：US20180099492A1

公开(公告)日：2018-04-12

申请号：US15564134

申请日：2015-07-31

Applicant: Dow Global Technologies LLC

Inventor： Xiao Bing Yun ,  Jianping Pan ,  Gang Wang

IPC: B32B27/32 ,  B29C47/00 ,  B29C47/06 ,  B29C55/06 ,  B32B7/12 ,  B32B27/08

CPC classification number: B32B27/32 ,  B29C48/0018 ,  B29C48/022 ,  B29C48/08 ,  B29C48/21 ,  B29C55/06 ,  B29C55/12 ,  B29C55/28 ,  B32B7/04 ,  B32B7/12 ,  B32B27/08 ,  B32B27/304 ,  B32B27/308 ,  B32B27/327 ,  B32B27/36 ,  B32B2270/00 ,  B32B2274/00 ,  B32B2307/31 ,  B32B2307/518 ,  B32B2307/54 ,  B32B2307/72 ,  B32B2307/732 ,  B32B2553/00

Abstract: Embodiments of the present invention relate to multilayer structures and articles formed therefrom. In one aspect, a multilayer structure comprises (a) a biaxially oriented polyethylene film comprising a linear low density polyethylene having a density of 0.910 to 0.940 g/cm3, wherein the ultimate elongation in the machine direction of the biaxially oriented polyethylene film is at least 2 times greater than the ultimate elongation in the cross direction, and wherein the ultimate tensile strength of the biaxially oriented polyethylene film is at least 60 MPa in at least one of the machine direction and the cross direction; (b) an adhesive layer; and (c) a sealant film, wherein the ultimate elongation of the sealant film is at least 300% in at least one of the machine direction and the cross direction, wherein the ultimate tensile strength of the sealant film is less than 50 MPa in at least one of the machine direction and the cross direction, and wherein the sealant film has a heat seal initiation temperature of 105 ° Cor less; wherein the sealant film is laminated to the biaxially oriented polyethylene film by the adhesive. In some embodiments, the sealant film comprises at least one layer comprising at least 30 percent by weight of a polyolefin plastomer, a polyolefin elastomer, an ultra low density polyethylene, an ethylene acetate copolymer, an ethylene acrylic acid copolymer, or an ethylene acrylate copolymer.

公开(公告)号：US12251909B2

公开(公告)日：2025-03-18

申请号：US18003521

申请日：2020-08-27

Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  ROHM AND HAAS COMPANY

Inventor： Gang Wang ,  Lianjiang Zhao ,  Jingyi Xu ,  Xiaobing Yun ,  Jianping Pan ,  Gaobing Chen ,  Jianliang Zhu

IPC: B32B27/08 ,  B32B7/03 ,  B32B7/12 ,  B32B27/32 ,  B32B37/12

Abstract: Provided are multilayer structures and articles comprising same. The multilayer structure comprises: a biaxially-oriented polyethylene film comprising a skin layer with a matte surface and a core, the core comprising one or more core layers; a sealant film; and an adhesive adhering the sealant film to the matte surface of the skin layer of the biaxially-oriented polyethylene film. The multilayer structure can exhibit an enhanced adhesive bonding force in comparison to other multilayer structures.

公开(公告)号：US20240416630A1

公开(公告)日：2024-12-19

申请号：US18698564

申请日：2021-11-08

Applicant: Dow Global Technologies LLC

Inventor： Gang Wang ,  ChenYan Bai ,  Zhe Du ,  Fanji Wang ,  Xiaobing Yun ,  Jianping Pan ,  Jingyi Xu ,  Jianliang Zhu ,  Huan Qiu

IPC: B32B27/08 ,  B32B7/12 ,  B32B27/32 ,  B32B37/12 ,  C09J175/06

Abstract: Provided are a laminate material, an article comprising the laminate material and a method for preparing the laminate material. The laminate material, comprises a first substrate comprising at least one metalized PE-based film, a second substrate comprising at least one PE-based film, and an adhesive layer adhering the first substrate to the second substrate, wherein the adhesive layer is derived from a two-component solvent-based polyurethane adhesive composition, and wherein the concentration of fatty acids or fatty acid derivatives in the metalized PE-based film is less than 300 ppm, based on the total weight of the metalized PE-based film. The two-component solvent-based polyurethane adhesive composition comprises a polyester polyol component and a polyisocyanate component, wherein the polyol component has 40 wt %-60 wt % of aromatic rings in the backbone, based on the total weight of the polyester polyol and a Mw between 5.000 and 50.000, and wherein the weight ratio of the polyester polyol component to polyisocyanate component is from 100:5 to 100:30.

公开(公告)号：US12110371B2

公开(公告)日：2024-10-08

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: B32B27/32 ,  B29C48/08 ,  B29C48/21 ,  B32B27/08 ,  B32B27/16 ,  B32B27/20 ,  C08J5/18 ,  C08L23/06 ,  B29C48/00 ,  B29K23/00

CPC classification number: C08J5/18 ,  B29C48/08 ,  B29C48/21 ,  B32B27/08 ,  B32B27/16 ,  B32B27/205 ,  B32B27/32 ,  C08L23/06 ,  B29C48/0018 ,  B29K2023/0625 ,  B32B2250/242 ,  B32B2307/518 ,  B32B2307/54 ,  B32B2307/72 ,  C08J2323/06 ,  C08J2423/06 ,  C08L2203/16 ,  C08L2205/025 ,  C08L2314/02

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 I2 lower than 2 g/10 min; 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 I2 greater than or equal to 2 g/10 min; wherein the first polyethylene composition has an I2 from 0.5 to 10 g/10 min and a density from 0.910 to 0.940 g/cc is provided.

公开(公告)号：US12036777B2

公开(公告)日：2024-07-16

申请号：US15564134

申请日：2015-07-31

Applicant: Dow Global Technologies LLC

Inventor： Xiao Bing Yun ,  Jianping Pan ,  Gang Wang

IPC: B32B27/32 ,  B29C48/00 ,  B29C48/08 ,  B29C48/21 ,  B29C55/06 ,  B29C55/12 ,  B32B7/04 ,  B32B7/12 ,  B32B27/08 ,  B32B27/30 ,  B32B27/36 ,  B29C55/28

CPC classification number: B32B27/32 ,  B29C48/0018 ,  B29C48/022 ,  B29C48/08 ,  B29C48/21 ,  B29C55/06 ,  B29C55/12 ,  B32B7/04 ,  B32B7/12 ,  B32B27/08 ,  B32B27/304 ,  B32B27/308 ,  B32B27/327 ,  B32B27/36 ,  B29C55/28 ,  B32B2270/00 ,  B32B2274/00 ,  B32B2307/31 ,  B32B2307/518 ,  B32B2307/54 ,  B32B2307/72 ,  B32B2307/732 ,  B32B2553/00

Abstract: Embodiments of the present invention relate to multilayer structures and articles formed therefrom. In one aspect, a multilayer structure comprises (a) a biaxially oriented polyethylene film comprising a linear low density polyethylene having a density of 0.910 to 0.940 g/cm3, wherein the ultimate elongation in the machine direction of the biaxially oriented polyethylene film is at least 2 times greater than the ultimate elongation in the cross direction, and wherein the ultimate tensile strength of the biaxially oriented polyethylene film is at least 60 MPa in at least one of the machine direction and the cross direction; (b) an adhesive layer; and (c) a sealant film, wherein the ultimate elongation of the sealant film is at least 300% in at least one of the machine direction and the cross direction, wherein the ultimate tensile strength of the sealant film is less than 50 MPa in at least one of the machine direction and the cross direction, and wherein the sealant film has a heat seal initiation temperature of 105° C. or less; wherein the sealant film is laminated to the biaxially oriented polyethylene film by the adhesive. In some embodiments, the sealant film comprises at least one layer comprising at least 30 percent by weight of a polyolefin plastomer, a polyolefin elastomer, an ultra low density polyethylene, an ethylene acetate copolymer, an ethylene acrylic acid copolymer, or an ethylene acrylate copolymer.

公开(公告)号：US11981758B2

公开(公告)日：2024-05-14

申请号：US16465927

申请日：2017-11-11

Applicant: Dow Global Technologies LLC

Inventor： Brian W. Walther ,  Santosh S. Bawiskar ,  Jianping Pan

IPC: C08L23/16 ,  C08F2/01 ,  C08F2/04 ,  C08F210/16 ,  C08J3/00 ,  C08L23/26 ,  C08L51/06 ,  C08F6/10 ,  C08F6/26

CPC classification number: C08F2/04 ,  C08F2/01 ,  C08F210/16 ,  C08J3/005 ,  C08L23/16 ,  C08F6/10 ,  C08F6/26 ,  C08J2323/08 ,  C08J2451/06 ,  C08L23/26 ,  C08L51/06 ,  C08L2203/16 ,  C08L2205/02

Abstract: A process to form a polymer composition comprising an ethylene-based polymer and a functionalized ethylene-based polymer, said process comprising the steps described herein, which include passing a polymer melt through at least one static mixer, and wherein the functionalized ethylene-based polymer, in melt form, is introduced into the polymer melt, before the polymer melt enters the static mixer.

公开(公告)号：US11958254B2

公开(公告)日：2024-04-16

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 ,  B29K23/00

CPC classification number: B29C65/242 ,  B29C65/48 ,  B29C66/43 ,  B29C66/71 ,  B29C66/723 ,  B29C66/73115 ,  B29C66/7352 ,  B29C66/73713 ,  B29C66/8511 ,  B29C66/91423 ,  B29C66/919 ,  B29K2023/0625 ,  B29K2023/0641 ,  B29K2995/0053

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：US20230302776A1

公开(公告)日：2023-09-28

申请号：US18040172

申请日：2020-10-19

Applicant: Dow Global Technologies LLC

Inventor： Jichang Feng ,  Jianping Pan ,  Xiaobing Yun ,  Shijun Wang ,  Bo Lyu

IPC: B32B27/08 ,  B32B7/12 ,  B32B27/32 ,  B32B7/02

CPC classification number: B32B27/08 ,  B32B7/02 ,  B32B7/12 ,  B32B27/32 ,  B32B2250/242 ,  B32B2307/31 ,  B32B2307/54 ,  B32B2307/558 ,  B32B2307/5825 ,  B32B2439/00

Abstract: Provided are liners suitable for use in a bulk container. The liners can hold high temperature materials (e.g., materials reaching temperatures greater than 120° C.) and can comprise at least one ply including polyethylene. The liners can exhibit high dart impact and can provide a balance of stiffness, toughness, and seal strength. The at least one ply of the liner according to embodiments disclosed herein comprises a first layer, a tie layer, and a second layer, wherein the tie layer is disposed between the first layer and the second layer. In further embodiments, the at least one ply of the liner can include a second tie layer and a third layer, wherein the second tie layer is disposed between the first layer and the third layer.