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公开(公告)号：US11325363B2
公开(公告)日：2022-05-10
申请号：US16490307
申请日：2018-02-28
IPC分类号： B32B27/36 , B32B27/08 , C08G63/137 , C08L67/02 , C08G63/12 , C08G63/16 , C08G63/18 , C08G63/127 , C08G63/123 , C08J7/052
摘要： An object is to provide a laminate having excellent lamination strength that includes a polyester film having a furandicarboxylate unit and a heat-sealable resin layer, and to provide a packaging bag including the same. A laminate including a polyester film and a heat-sealable resin layer, wherein the polyester film is a biaxially oriented polyester film containing a polyethylene furandicarboxylate resin composed of a furandicarboxylic acid and ethylene glycol, a plane orientation coefficient ΔP of the film is 0.100 or more and 0.160 or less, a thickness of the film is 1 μm or more and 300 μm or less, a heat shrinkage rate of the film is 10% or less when heated at 150° C. for 30 minutes, and lamination strength of the laminate is 2.0 N/15 mm or more.
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公开(公告)号：US11511473B2
公开(公告)日：2022-11-29
申请号：US16490205
申请日：2018-02-28
发明人： Shota Hayakawa , Yukihiro Numata , Katsuya Ito , Jun Inagaki , Toshiyuki Shimizu , Shoichi Gyobu , Chikao Morishige , Jesper Gabriel Van Berkel
IPC分类号： B29C48/305 , B29C48/08 , B29C48/00 , B29C55/12 , B29C71/02 , B29C71/00 , B29C48/885 , B29K67/00
摘要： It is provided that a method for producing a biaxially oriented polyester film that can be used for industrial and packaging applications. A method for producing a biaxially oriented polyester film, comprising: a step of feeding a polyester resin into an extruder, a step of extruding the molten polyester resin from an extruder to obtain a molten resin sheet at 250 to 310° C., a step of attaching the molten resin sheet closely to a cooling roll by an electrostatic application method to obtain an unstretched sheet, and a step of biaxially stretching the unstretched sheet, wherein the polyester resin fulfills the following (A) to (C): (A) the polyester resin comprises a polyethylene furandicarboxylate resin composed of a furandicarboxylic acid and ethylene glycol; (B) an intrinsic viscosity of the polyester resin is 0.50 dL/g or more; (C) a melt specific resistance value at 250° C. of the polyester resin is 3.0×107 Ω·cm or less.
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公开(公告)号：US10941244B2
公开(公告)日：2021-03-09
申请号：US16089693
申请日：2017-03-07
摘要： It is provided that a polyester film excellent in heat resistant dimension stability, impact-resistant strength properties, easy-slipping properties, mechanical properties, transparency, and gas barrier performance, and a film roll obtained by winding up this polyester film. A polyester film includes at least one layer mainly including a polyester resin containing a dicarboxylic acid component including furandicarboxylic acid as a main component and a glycol component including ethylene glycol as a main component; and the polyester film has a plane orientation coefficient ΔP of not less than 0.005 and not more than 0.200, a thickness of not less than 1 μm and not more than 300 μm, a heat shrinkage rate of 3.2% or less in each of the MD direction and the TD direction at 150° C. for 30 minutes, and a layer containing at least one additive.
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公开(公告)号：US11312830B2
公开(公告)日：2022-04-26
申请号：US17162351
申请日：2021-01-29
IPC分类号： C08J5/18 , C08J7/048 , C08J7/043 , C08J7/044 , C08J7/046 , C08J7/056 , B29C55/00 , B29C55/16 , B29C71/02 , C08G63/199 , B29K67/00 , B29L7/00
摘要： It is provided that a polyester film excellent in heat resistant dimension stability, impact-resistant strength properties, easy-slipping properties, mechanical properties, transparency, and gas barrier performance, and a film roll obtained by winding up this polyester film. A polyester film includes at least one layer mainly including a polyester resin containing a dicarboxylic acid component including furandicarboxylic acid as a main component and a glycol component including ethylene glycol as a main component; and the polyester film has a plane orientation coefficient ΔP of not less than 0.005 and not more than 0.200, a thickness of not less than 1 μm and not more than 300 μm, a heat shrinkage rate of 3.2% or less in each of the MD direction and the TD direction at 150° C. for 30 minutes, and a layer containing at least one additive.
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