Abstract: An oriented film including poly(ethylene-2,5-furandicarboxylate) is produced in a process by preparing a sheet from a poly(ethylene-2,5-furandicarboxylate) resin by heat processing, which sheet has a thickness of at most 2.5 mm; allowing the sheet to cool; and stretching the cooled sheet in at least one direction with a stretch ratio of at least 4/1 at a temperature in the range of 90 to 130° C., yielding an oriented film. The oriented film has a thickness of 1 to 400 ?m and a tensile strength at break of at least 100 MPa.

Abstract: Thermoformed article including poly(ethylene-2,5-furandicarboxylate) polyester, which polyester has a weight average molecular weight (Mw) of at least 50,000, determined by gel permeation chromatography using polystyrene as standard and which polyester is semicrystalline, is prepared in a process including: providing a sheet that includes poly(ethylene-2,5-furandicarboxylate) polyester, which polyester has a weight average molecular weight (Mw) of at least 50,000, determined by gel permeation chromatography using polystyrene as standard and which polyester is semicrystalline; heating the sheet to a temperature above its glass transition temperature to obtain a pliable sheet; shaping the pliable sheet in a mold to a desired shape to obtain a pliable shaped article; cooling the pliable shaped article; and releasing the thus cooled shaped article from the mold.

Abstract: 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 ?·cm or less.

Abstract: A preform for multilayer container having a polyethylene furanoate layer includes an outer layer defining an exterior surface and including poly(ethylene terephthalate) and an inner barrier layer including semi-crystalline poly(ethylene furanoate) where the semi-crystalline poly(ethylene furanoate) of the inner barrier layer has a crystallinity in the range of 3 to 10%.

Abstract: 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 ?P of the film is 0.100 or more and 0.160 or less, a thickness of the film is 1 ?m or more and 300 ?m 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.

Abstract: To provide a layered polyester film having excellent mechanical properties, transparency, heat resistance, and gas barrier property. A layered polyester film including a polyester film and a thin film layer, wherein the polyester film is a biaxially oriented polyester film including a dicarboxylic acid component containing mainly a furandicarboxylic acid and a glycol component containing mainly ethylene glycol, the covering layer is formed on at least one surface of the polyester film, and the layered polyester film has a plane orientation coefficient ?P of not less than 0.100 and not more than 0.200, and a thickness of the layered polyester film is not thinner than 1 ?m and not thicker than 300 ?m.

Abstract: To provide a layered polyester film having excellent mechanical properties, transparency, heat resistance, and in particular excellent gas barrier property. A layered polyester film containing a polyester film and a thin film layer including mainly an inorganic compound, wherein the polyester film is a biaxially oriented polyester film including a dicarboxylic acid component containing mainly a furandicarboxylic acid and a glycol component containing mainly ethylene glycol, the thin film layer is formed on at least one surface of the polyester film, the inorganic compound is at least one of aluminum oxide and silicon oxide, and the layered polyester film has a plane orientation coefficient ?P of not less than 0.100 and not more than 0.200, a film thickness of not thinner than 1 ?m and not thicker than 300 ?m, and an oxygen permeability of not less than 0.1 mL/m2/day/MPa and not more than 80 mL/m2/day/MPa under a temperature of 23° C. and a humidity of 65%.

Abstract: 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 ?P of not less than 0.005 and not more than 0.200, a thickness of not less than 1 ?m and not more than 300 ?m, 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.

Abstract: A container includes an outer layer defining an exterior surface and including poly (ethylene terephthalate) and an inner barrier layer including semi-crystalline poly(ethylene furanoate) including semi-crystalline poly(ethylene furanoate) where the poly(ethylene furanoate) has a crystallinity Xc of 3 to 40%.

Abstract: A container, preferably a bottle, is fabricated in a method comprising: —providing a preform comprising poly(ethylene 2, 5-furandicarboxylate); —stretch blow-molding the preform to form the container, wherein the stretch blow-molding comprises a stretching step of the preform to a ratio higher than the natural draw ratio of poly(ethylene 2, 5-furandicarboxylate) at a temperature in a range of 105° C. to 145° C., preferably in a range of 110° C. to 140° C., and at an equivalent axial strain rate at a reference temperature of 100° C. in the range of 0.001 to 10 s?1, preferably in a range of 0.03 to 3 s?1.

Abstract: An oriented film including poly(ethylene-2,5-furandicarboxylate) is produced in a process by preparing a sheet from a poly(ethylene-2,5-furandicarboxylate) resin by heat processing, which sheet has a thickness of at most 2.5 mm; allowing the sheet to cool; and stretching the cooled sheet in at least one direction with a stretch ratio of at least 4/1 at a temperature in the range of 90 to 130° C., yielding an oriented film. The oriented film has a thickness of 1 to 400 ?m and a tensile strength at break of at least 100 MPa.

Abstract: 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 ?P of not less than 0.005 and not more than 0.200, a thickness of not less than 1 ?m and not more than 300 ?m, 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.

Abstract: An oriented film including poly(ethylene-2,5-furandicarboxylate) is produced in a process by preparing a sheet from a poly(ethylene-2,5-furandicarboxylate) resin by heat processing, which sheet has a thickness of at most 2.5 mm; allowing the sheet to cool; and stretching the cooled sheet in at least one direction with a stretch ratio of at least 4/1 at a temperature in the range of 90 to 130° C., yielding an oriented film. The oriented film has a thickness of 1 to 400 ?m and a tensile strength at break of at least 100 MPa.

Abstract: 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 ?P of not less than 0.005 and not more than 0.200, a thickness of not less than 1 ?m and not more than 300 ?m, 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.

Abstract: 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 ?·cm or less.

Abstract: A container includes an outer layer defining an exterior surface and including poly (ethylene terephthalate) and an inner barrier layer including semi-crystalline poly(ethylene furanoate) including semi-crystalline poly(ethylene furanoate) where the poly(ethylene furanoate) has a crystallinity Xc of 3 to 40%.

Abstract: To provide a layered polyester film having excellent mechanical properties, transparency, heat resistance, and in particular excellent gas barrier property. A layered polyester film containing a polyester film and a thin film layer including mainly an inorganic compound, wherein the polyester film is a biaxially oriented polyester film including a dicarboxylic acid component containing mainly a furandicarboxylic acid and a glycol component containing mainly ethylene glycol, the thin film layer is formed on at least one surface of the polyester film, the inorganic compound is at least one of aluminum oxide and silicon oxide, and the layered polyester film has a plane orientation coefficient ?P of not less than 0.005 and not more than 0.200, a film thickness of not thinner than 1 ?m and not thicker than 300 ?m, and an oxygen permeability of not less than 0.1 mL/m2/day/MPa and not more than 80 mL/m2/day/MPa under a temperature of 23° C. and a humidity of 65%.

Abstract: To provide a layered polyester film having excellent mechanical properties, transparency, heat resistance, and gas barrier property. A layered polyester film including a polyester film and a thin film layer, wherein the polyester film is a biaxially oriented polyester film including a dicarboxylic acid component containing mainly a furandicarboxylic acid and a glycol component containing mainly ethylene glycol, the covering layer is formed on at least one surface of the polyester film, and the layered polyester film has a plane orientation coefficient ?P of not less than 0.005 and not more than 0.200, and a thickness of the layered polyester film is not thinner than 1 ?m and not thicker than 300 ?m.

Abstract: 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 ?P of the film is 0.005 or more and 0.200 or less, a thickness of the film is 1 ?m or more and 300 ?m 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.

Abstract: Thermoformed article including poly(ethylene-2,5-furandicarboxylate) polyester, which polyester has a weight average molecular weight (Mw) of at least 50,000, determined by gel permeation chromatography using polystyrene as standard and which polyester is semicrystalline, is prepared in a process including: providing a sheet that includes poly(ethylene-2,5-furandicarboxylate) polyester, which polyester has a weight average molecular weight (Mw) of at least 50,000, determined by gel permeation chromatography using polystyrene as standard and which polyester is semicrystalline; heating the sheet to a temperature above its glass transition temperature to obtain a pliable sheet; shaping the pliable sheet in a mold to a desired shape to obtain a pliable shaped article; cooling the pliable shaped article; and releasing the thus cooled shaped article from the mold.