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公开(公告)号：US20240101770A1
公开(公告)日：2024-03-28
申请号：US18262117
申请日：2022-01-26
Applicant: TOYOBO CO., LTD.
Inventor： Nobuyuki MANABE , Masayuki HARUTA
CPC classification number: C08J5/18 , B29C48/0018 , B29C48/08 , B29C48/28 , C08J2367/00
Abstract: The invention provides a biaxially oriented polyester film, which exhibits excellent transparency, is easily subjected to secondary processing, and is produced using a polyester resin obtained without using an antimony compound as a polymerization catalyst, and a production method therefor. At least one surface of the biaxially oriented polyester film meets requirements (1) to (4): (1) a number of fine protrusions each having a height of less than 3 nm per area of 4×10−12 m2 is 250 or more and 600 or less; (2) a number of fine protrusions each having a height of 3 nm or more per area of 4×10−12 m2 is 300 or more and 600 or less; (3) an arithmetic mean height Sa is 0.010 μm or more and 0.025 μm or less; and (4) an antimony content in the film is 10 ppm or less.
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公开(公告)号：US20240218148A1
公开(公告)日：2024-07-04
申请号：US18558588
申请日：2022-05-27
Applicant: TOYOBO CO., LTD.
Inventor： Nobuyuki MANABE , Takamichi GOTO , Masayuki HARUTA
CPC classification number: C08J11/12 , C08J5/18 , C08J2333/04
Abstract: The invention provides a biaxially oriented polyester film that is formed of a polyester resin composition containing polyester resin employing recycled PET bottles and particles, and meets all of requirements (1) to (4): (1) crystallization temperature is 120-139° C., (2) amount of change in orientation angle with respect to the film transverse direction is 0-10° per 0.5 m, (3) heat shrinkage rate at 150° C. for 30 minutes is 0.5-2.0% in the machine direction and −1.0-1.0% in the transverse direction, and (4) content rate of an isophthalic acid component with respect to 100 mol % of total dicarboxylic acid components in the polyester resin composition is 0.01-3.0 mol %. Maximum and minimum values of data for each measurement position are within the range in the requirement (3), and a maximum value of each amount of change between two adjacent sample collection positions is within the range in the requirement (2).
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Patent Agency Ranking
公开(公告)号：US20230365804A1
公开(公告)日：2023-11-16
申请号：US18043274
申请日：2021-08-06
Applicant: TOYOBO CO., LTD.
Inventor： Nobuyuki MANABE , Takamichi GOTO , Masayuki HARUTA
CPC classification number: C08L67/02 , C08J5/121 , C08L2207/20 , C08L2205/025 , C08L2203/16 , C08J2367/02 , C08J2467/02 , B29C48/08
Abstract: The invention provides a biaxially oriented polyester film roll which has excellent transparency and mechanical characteristics, as well as an excellent ability to be wound up into a roll and/or lubricity during film manufacturing operations, which is environmentally friendly, and which exhibits little variation in physical properties in the machine direction thereof even when in the form of a long film roll, i.e., a roll of long wound length, and a production method therefor. In particular, the invention provides a biaxially oriented polyester film roll, wound up at which there is a biaxially oriented polyester film comprising a polyester resin composition comprising particles and polyester resin recycled by the market and/or society and including PET bottles, the biaxially oriented polyester film roll satisfying predetermined ranges of haze, purge time for air, arithmetic mean height Sa, maximum projecting height Sp, and variation thereof.
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公开(公告)号：US20220251314A1
公开(公告)日：2022-08-11
申请号：US17627096
申请日：2020-06-23
Applicant: TOYOBO CO., LTD.
Inventor： Nobuyuki MANABE , Masayuki HARUTA
IPC: C08J5/18
Abstract: Disclosed is a biaxially oriented polyester film that is superior in transparency and easy to perform secondary processing such as coating and vapor deposition, and satisfies performance after the secondary processing. The biaxially oriented polyester film consists of a polyester resin composition including particles, and at least one surface of the film satisfies all of the following requirements (1) to (3): (1) the number of micro protrusions having a height of less than 3 nm per an area of 4×10−12 m2 of 250 or more and 600 or less; (2) the number of micro protrusions having a height of 3 nm or more per an area of 4×10−12 m2 of 300 or more and 600 or less; and (3) an arithmetic average height Sa of 0.010 μm or more and 0.025 μm or less.
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公开(公告)号：US20240124705A1
公开(公告)日：2024-04-18
申请号：US18262163
申请日：2022-01-26
Applicant: TOYOBO CO., LTD.
Inventor： Nobuyuki MANABE , Masayuki HARUTA
CPC classification number: C08L67/02 , B29C48/0018 , B29C48/022 , B29C48/08 , B29C48/28 , B29C48/288 , C08J5/18 , B29K2067/00 , C08J2367/02 , C08J2467/02
Abstract: The invention provides a biaxially oriented polyester film, which exhibits excellent transparency, is easily subjected to secondary processing, is an environmentally friendly polyester film, and has little variations in physical properties in the machine direction, and a production method therefor. The biaxially oriented polyester film is formed of a polyester resin composition containing particles and 50% by weight or more of a polyester resin composed of biomass-derived ethylene glycol and fossil fuel-derived dicarboxylic acid units, wherein at least one surface of the biaxially oriented polyester film meets requirements (1) to (3): (1) a number of fine protrusions each having a height of less than 3 nm per area of 4×10−12 m2 is 250-600; (2) a number of fine protrusions each having a height of 3 nm or more per area of 4×1012 m2 is 300-600; and (3) an arithmetic mean height Sa is 0.010-0.025 μm.
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公开(公告)号：US20230001619A1
公开(公告)日：2023-01-05
申请号：US17784393
申请日：2020-12-08
Applicant: TOYOBO CO., LTD.
Inventor： Nobuyuki MANABE , Masayuki HARUTA
IPC: B29C48/08 , B29C48/00 , B29C48/285
Abstract: [Problem] To provide: a biaxially oriented polyester film that exhibits excellent transparency, enables easy secondary processing such as coating and vapor deposition, provides excellent post-secondary-processing properties, and is environmentally friendly in that the film is made from polyester resins recycled from the market and society, including those from PET bottles; and a production method for such a film. [Solution] A biaxially oriented polyester film comprising a polyester resin composition containing particles and polyester resins recycled from the market and society, including those from PET bottles, the film having at least one surface that satisfies all requirements (1)-(3). (1) The number of fine projections having a height less than 3 nm per an area of 4×10-12m2 is 250-600. (2) The number of fine projections having a height not less than 3 nm per an area of 4×10-12m2 is 300-600. (3) The arithmetic average height Sa is 0.01-0.025 μm.
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公开(公告)号：US20210339973A1
公开(公告)日：2021-11-04
申请号：US17285777
申请日：2019-10-25
Applicant: TOYOBO CO., LTD.
Inventor： Nobuyuki MANABE , Masayuki HARUTA
Abstract: Provided is a polyester film roll which has less wrinkles and film surface defects, exhibits no deviation of winding, and is suitable for secondary processing such as coating and vapor deposition. The polyester film roll is obtained by winding a biaxially oriented polyester film around a core, and is characterized by satisfying requirements (1)-(3) below: (1) the average winding hardness of the surface of the polyester film roll is in the range of 500-700; (2) the variation rate of the winding hardness of the surface of the polyester film roll in the film width direction is 1-5%; and (3) the variation rate of the average winding hardness from the surface of the polyester film roll to the core is 3-10%.
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