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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
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.
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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
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.
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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
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.
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14.发明授权公开(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
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.
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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.
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Patent Agency Ranking
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
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.
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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
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.
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公开(公告)号：US20230219331A1
公开(公告)日：2023-07-13
申请号：US17998950
申请日：2020-07-30
Applicant: Dow Global Technologies LLC
Inventor： Bo Lv , Xiaobing Yun , Jianping Pan , Jingyi Xu , Jichang Feng
CPC classification number: B32B27/32 , B32B27/08 , B32B27/308 , B32B7/12 , B32B2255/205 , B32B2255/10 , B32B2250/24 , B32B2250/03 , B32B2307/72
Abstract: Provided are multilayer structures, laminates and articles formed from such structures. In one aspect, a multilayer structure comprises (a) a multilayer polyethylene film, wherein an outer layer of the film comprises a polymer blend of at least one ethylene-based polymer and at least one ethylene acid copolymer, wherein the difference between the melt index (I2) of the ethylene acid copolymer and the ethylene-based polymer is less than 18, and wherein the acid content of the polymer blend is greater than 0.2%; and (b) a metal layer comprising a metal deposited on the outer layer of the polyethylene film.
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公开(公告)号：US11319419B2
公开(公告)日：2022-05-03
申请号：US16612003
申请日：2017-05-11
Applicant: Dow Global Technologies LLC
Inventor： Yong Chen , Xiaobing Yun , Libo Du
Abstract: A multilayer film (10) having excellent mechanical strength and transparency comprise a core layer (12), at least two skin layers, and at least two sub-skin layers disposed between the core layer (12) and the two skin layers. The core layer (12) comprises at least 60 wt. % linear low density polyethylene (LLDPE). The sub-skin layers comprise at least 60 wt. % low density polyethylene (LDPE). The skin layers comprise at least 80 wt. % of LLDPE wherein the LLDPE comprises C6 LLDPE, C8 LLDPE, or combinations thereof, and each skin layer has a thickness of less than 25% of the overall thickness of the multilayer film (10). The multilayer film (10) comprises at least 0.1 wt. % ultraviolet stabilizer.
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公开(公告)号：US20220106465A1
公开(公告)日：2022-04-07
申请号：US17049993
申请日：2019-06-29
Applicant: Dow Global Technologies LLC
Inventor： Yunfeng Yang , Hongyu Chen , Jianping Pan , Bin Li , Lei Ying , Xiaobing Yun , Sheng Li , Jichang Feng
Abstract: Embodiments of the present disclosure generally relate to compositions suitable for manufacturing polyethylene foam. In one aspect, a composition suitable for making uncrosslinked low density polyethylene foam comprising at least 50 weight percent low density polyethylene based on the total weight of the composition, wherein the low density polyethylene has a density of 0.915 to 0.930 g/cm3 and a melt index (I2) of 1 to 4 g/10 minutes; and polytetrafluoroethylene having an average particle size of one micron to 15 microns.
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