Patents by Inventor Masayuki Haruta

Masayuki Haruta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220251314
    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 ?m or more and 0.025 ?m or less.
    Type: Application
    Filed: June 23, 2020
    Publication date: August 11, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Nobuyuki MANABE, Masayuki HARUTA
  • Publication number: 20220126495
    Abstract: To provide a biaxially-oriented polyester film roll that is excellent in transparency and heat resistance and has less defects. A biaxially oriented polyester film roll of the present invention characterized by satisfying requirements (1) a winding length of the film roll, (2) a width of the film roll, (3) an average hardness of an outermost surface layer of the polyester film roll, (4) a variation in hardness, (5) a thickness of a polyester film of the polyester film roll, and (6) an irregularity of thickness in the maximum concave portion.
    Type: Application
    Filed: February 5, 2020
    Publication date: April 28, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Masayuki HARUTA, Norimi TABOTA
  • Patent number: 11299595
    Abstract: Provided is a heat-shrinkable polyester film which has heat shrinkage properties in a main shrinkage direction in the longitudinal direction, a small variation in shrinkage in the width direction, and less likely generated wrinkles and strains at the time of shrinkage finishing. The polyester film is prepared from a polyester raw material resin comprising 50 mol % or more of an ethylene terephthalate unit in 100 mol % of constituent units of a polyester, diol components selected from aliphatic, alicyclic, and aromatic diols, and an amorphous monomer component that is 2% or more in 100 mol % of either a polyhydric alcohol component or a polybasic carboxylic acid component in the whole polyester resin, wherein the polyester does not contain polybasic carboxylic acids of tribasic or more, and the polyester film is obtained by uniaxial drawing in the longitudinal direction.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: April 12, 2022
    Assignee: TOYOBO CO., LTD.
    Inventors: Masafumi Inoue, Masayuki Haruta
  • Patent number: 11298927
    Abstract: The invention provides a white polyester film formed with a polyester resin whose main constituent is ethylene terephthalate, and (1) the film has at least two or more layers, and has at least one white layer and at least one heat sealing layer, wherein at least one of the film surfaces is the heat sealing layer, and the film satisfies the prescribed requirements of (2) the peeling strength of the heat sealing layers, (3) the difference in reversing heat capacity between at a lower and a higher temperature than a glass transition temperature of the heat sealing layer, (4) the heat shrinkage in both a longitudinal and width direction when treated in hot water at 80° C. for 10 seconds, (5) the total light transmittance, and (6) the apparent specific gravity.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: April 12, 2022
    Assignee: TOYOBO CO., LTD.
    Inventors: Shintaro Ishimaru, Masayuki Haruta
  • Publication number: 20220056223
    Abstract: To provide a biaxially oriented polyester film that has extremely low content of antimony, excellent hygiene, few foreign substances, excellent transparency and heat resistance, and is excellent in printability, workability, and productivity. A biaxially oriented polyester film characterized by a content of antimony in the film of 10 ppm or less, a content of phosphorus in the film of 25 ppm or more and 75 ppm or less, an intrinsic viscosity of the film of 0.51 dl/g or more and 0.70 dl/g or less, and a number of defects with a size of 1 mm or more is 1.0 or less per 1000 square meters of the film.
    Type: Application
    Filed: January 30, 2020
    Publication date: February 24, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Masayuki HARUTA, Norimi TABOTA
  • Publication number: 20220049049
    Abstract: The invention provides a polyester resin for heat-shrinkable film which contains terephthalic acid as a main component of a dicarboxylic acid component, contains ethylene glycol as a main component of a diol component, and contains from 18 to 32% by mole of neopentyl glycol and from 7 to 15% by mole of diethylene glycol when a total amount of the whole diol component in total polyester resin components is taken as 100% by mole. The polyester resin has (i) an intrinsic viscosity (IV) of not less than 0.65 and less than 0.70 dl/g, (ii) a carboxyl end group concentration (AV) of 8-25 eq/t, (iii) a color b value of 1.0-8.0 in an L*a*b* color system, and (iv) aluminum and phosphorus atoms, wherein the aluminum atoms are present in an amount of 15-40 ppm, and wherein the molar ratio of the phosphorus atoms to the aluminum atoms is 1.8-2.6.
    Type: Application
    Filed: September 25, 2019
    Publication date: February 17, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Satoru NAKAGAWA, Kosuke UOTANI, Hideto OHASHI, Masayuki HARUTA, Shintaro ISHIMARU
  • Publication number: 20220024111
    Abstract: The present invention is to provide a method for producing a biaxially oriented polyester film that is superior in mechanical properties, transparency, and heat resistance, and at the same time, superior in secondary processing suitability and printing appearance. Disclosed is a biaxially oriented polyester film, having at least one surface satisfying the following requirements (1) and (2), and the film satisfying the following requirements (3) and (4). (1) A maximum peak height roughness (SRp) is 1.2 ?m to 1.6 ?m. (2) An arithmetic average roughness (SRa) is 0.024 ?m to 0.045 ?m. (3) A tensile strength in a longitudinal direction and a width direction is 180 MPa to 300 MPa. (4) A haze is 7% or less.
    Type: Application
    Filed: October 25, 2019
    Publication date: January 27, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Mahiro NAKANO, Masayuki HARUTA
  • Publication number: 20210370580
    Abstract: The invention provides a heat-shrinkable polyester-based film roll obtained by winding a heat-shrinkable polyester-based film with a shrinkage ratio of 30% or more in a film main shrinkage direction in hot water at 90° C. for 10 seconds. The film roll has a winding length of 2000-25000 m and a width of 400-2500 mm. The film has a thickness of 5-40 ?m. In thickness unevenness in a width direction of the film on a surface layer of the film roll, there are positions having concave thickness patterns, and in a concave portion that has a maximum thickness difference (maximum concave portion), thickness unevenness in the maximum concave portion, which is obtained from the maximum thickness difference in the maximum concave portion and an average thickness of the film is 10% or less. The winding hardness of the surface layer of the film roll is 400-800.
    Type: Application
    Filed: September 3, 2018
    Publication date: December 2, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Masayuki HARUTA, Norimi TABOTA
  • Patent number: 11167887
    Abstract: The invention provides an amorphous copolymerized polyester raw material for a film. The raw material contains ethylene terephthalate as a main constituent component, and contains from 18% by mol to 30% by mol of neopentyl glycol when a total amount of a glycol component in a total polyester resin component is taken as 100% by mol. The raw material contains from 8% by mol to 16% by mol of a constituent unit derived from diethylene glycol in the total amount (100% by mol) of the glycol component in the total polyester resin component. The raw material has an intrinsic viscosity of from 0.70 dl/g to 0.86 dl/g. The raw material has a melt viscosity of 200 Pa·S or less, when measured at a shear rate of 6080/S at 250° C.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: November 9, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Masayuki Haruta, Shintaro Ishimaru, Hideto Ohashi, Soichiro Minami
  • Publication number: 20210339973
    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%.
    Type: Application
    Filed: October 25, 2019
    Publication date: November 4, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Nobuyuki MANABE, Masayuki HARUTA
  • Publication number: 20210339514
    Abstract: The invention provides a sealant film that is less likely to adsorb components formed of various types of organic compounds, has excellent heat sealing characteristics at 140° C., while having low heat sealing strength at 100° C. and being less likely for heat sealing layers to adhere to each other even when the film is used as a packaging bag and the content thereof is warmed in boiling water. The sealant film has at least one heat sealing layer consisting of a polyester component, wherein a heat sealing strength of the heat sealing layer being heat sealed to another heat sealing layer at 100° C. and 0.2 MPa for 2 seconds is 0-5 N/15 mm and at 140° C. and 0.2 MPa for 2 seconds is 8-30 N/15 mm, and a film density including all layers is 1.20 or more and less than 1.39.
    Type: Application
    Filed: September 30, 2019
    Publication date: November 4, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Hiroko MARUYAMA, Masayuki HARUTA, Shintaro ISHIMARU
  • Publication number: 20210317299
    Abstract: The invention provides an amorphous copolymerized polyester raw material for a film, wherein the copolymerized polyester raw material (1) contains ethylene terephthalate as a main constituent component, and neopentyl glycol by 15-30 mol % when a total amount of glycol component in a total polyester resin component is taken as 100 mol %, (2) contains a constituent unit derived from diethylene glycol by 7-15 mol % in the total amount of glycol component 100 mol % in the total polyester resin component, (3) has an intrinsic viscosity of 0.60 dl/g or more and less than 0.70 dl/g, and (4) has a glass transition temperature of 60-70° C. The invention also provides a heat-shrinkable polyester-based film containing the amorphous copolymerized polyester raw material, as well as a heat-shrinkable label and a packaging bag.
    Type: Application
    Filed: July 26, 2019
    Publication date: October 14, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Masafumi INOUE, Masayuki HARUTA
  • Publication number: 20210246301
    Abstract: The invention provides a heat-shrinkable polyester-based film, where the heat-shrinkage ratio in the width direction is high and the irregularity of thickness is small. The heat-shrinkable polyester-based film of the present invention contains 90 mol % or more of ethylene terephthalate unit based on 100 mol % of whole ester unit, wherein, the heat-shrinkable polyester-based film satisfies the requirements: (1) heat-shrinkage ratio in a width direction measured by shrinking the film for 10 seconds in 90° C. hot water is 50%-75%, (2) heat-shrinkage ratio in a longitudinal direction measured by shrinking the film for 10 seconds in 90° C. hot water is ?6% or more and 14% or less, (3) heat-shrinkage ratio in the longitudinal direction measured by shrinking the film for 10 seconds in 70° C. hot water is -6% or more and 6% or less, and (4) irregularity of thickness in the width direction is 1%-20%.
    Type: Application
    Filed: March 14, 2019
    Publication date: August 12, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Shintaro ISHIMARU, Masayuki HARUTA
  • Patent number: 11084901
    Abstract: The invention provides a polyester resin for heat-shrinkable film which contains terephthalic acid as a main component of a dicarboxylic acid component, contains ethylene glycol as a main component of a diol component, and contains from 18 to 32% by mol of neopentyl glycol and from 8 to 16% by mol of diethylene glycol when a total amount of the whole diol component in total polyester resin components is taken as 100% by mol. The polyester resin has an intrinsic viscosity (IV) of from 0.70 to 0.86 dl/g, a carboxyl end group concentration (AV) of from 8 to 25 eq/t, and a color b value of from 1.0 to 12.0 in an L*a*b color system. The invention also provides a heat-shrinkable film prepared from the aforementioned polyester resin, as well as a heat-shrinkable label and packaged product.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: August 10, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Soichiro Minami, Hideto Ohashi, Masayuki Haruta, Shintaro Ishimaru
  • Publication number: 20210229410
    Abstract: The present invention provides a polyester-based film for keeping freshness, comprising a polyester-based resin layer comprising ethylene terephthalate as a main component, wherein the polyester-based film satisfies the requirements (1) to (4); that can extend the shelf life of the contents such as fruits and vegetables when using as a packaging bag, increase a commodity value, and re-close even after the packaging bag opened. (1) the film has an O2-transmission rate of 50 [cc/(m2·d·atm)] or more and 1000 [cc/(m2·d·atm)] or less when measured at a temperature of 23° C. and a relative humidity of 65% RH, (2) the film has a CO2-transmission rate of 200 [cc/(m2·d·atm)] or more and 5000 [cc/(m2·d·atm)] or less when measured at a temperature of 23° C., (3) the film has a water vapor transmission rate of 20 [g/(m2·d)] or more and 400 [g/(m2·d)] or less when measured at a temperature of 40° C. and a relative humidity of 90% RH, and (4) the film has an angle after folding the film of 20° or more and 80° or less.
    Type: Application
    Filed: June 4, 2019
    Publication date: July 29, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Shintaro ISHIMARU, Hiroko MARUYAMA, Tomoyuki HASHIDA, Masayuki HARUTA
  • Publication number: 20210108027
    Abstract: The invention provides a polyester resin for heat-shrinkable film which contains terephthalic acid as a main component of a dicarboxylic acid component, contains ethylene glycol as a main component of a diol component, and contains from 18 to 32% by mol of neopentyl glycol and from 8 to 16% by mol of diethylene glycol when a total amount of the whole diol component in total polyester resin components is taken as 100% by mol. The polyester resin has an intrinsic viscosity (IV) of from 0.70 to 0.86 dl/g, a carboxyl end group concentration (AV) of from 8 to 25 eq/t, and a color b value of from 1.0 to 12.0 in an L*a*b color system. The invention also provides a heat-shrinkable film prepared from the aforementioned polyester resin, as well as a heat-shrinkable label and packaged product.
    Type: Application
    Filed: April 16, 2018
    Publication date: April 15, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Soichiro MINAMI, Hideto OHASHI, Masayuki HARUTA, Shintaro ISHIMARU
  • Publication number: 20210101379
    Abstract: The invention provides a polyester sealant film having at least one of a heat sealing layer and a heat resistant layer, wherein each layer consists of a polyester component containing ethylene terephthalate. The polyester sealant film has (1) a heat sealing strength of the heat sealing layers of 8-20 N/15 mm; (2) a difference in reversible heat capacity (?Cp) for the heat sealing layer of 0.5-1.1 J/g/K; (3) a ?Cp for the heat resistant layer of 0.1 to less than 0.6 J/g/K; (4) a fold holding angle of 20-60 degrees; (5) a smaller curvature radius of 50-300 mm in a longitudinal or widthwise direction; and (6) a heat shrinkage ratio of ?5% to 5% in both longitudinal and widthwise directions. The invention also provides a laminate comprising at least one layer of the polyester sealant and a packaging bag comprising the laminate.
    Type: Application
    Filed: February 8, 2018
    Publication date: April 8, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Shintaro ISHIMARU, Masayuki HARUTA
  • Publication number: 20210061605
    Abstract: The invention provides a heat-shrinkable polyester film roll containing a paper tube and a heat-shrinkable polyester film wound around the paper tube to form the heat-shrinkable polyester film roll, wherein (1) the film winding length is 2000-20000 m, (2) the film width is 400-2500 mm, (3) the film thickness is 5-30 ?m, (4) unevenness in thickness in the film widthwise direction in a film roll surface layer part is 12% or less, (5) the paper tube has an inner diameter of 3 inches, a difference in clearance of the paper tube in a widthwise direction after removal of the film from the film roll is 0.5 mm or less, and a flat compressive strength of the paper tube after removal of the film is 1700 N/100 mm or more, and (6) the average value of winding hardness in the widthwise direction in the film roll surface layer part is 500-850.
    Type: Application
    Filed: January 28, 2019
    Publication date: March 4, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Masayuki HARUTA, Norimi TABOTA
  • Patent number: 10934403
    Abstract: The invention provides a heat-shrinkable polyester film, which has a main shrinkage direction in a longer direction, exhibits a higher shrinkage ratio in the main shrinkage direction, has small difference in shrinkage ratio at a high temperature and a low temperature so as not likely to generate wrinkles or the like when being used as a label, and exhibits small over-time decrease in shrinkage ratio at a low temperature. The heat-shrinkable polyester film has, as a main component, ethyleneterephthalate, and an amount of a diethyleneglycol (DEG) component is 10-25 mol % with respect to 100 mol % of a polyhydric alcohol component in all of polyester resin that composes the film.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: March 2, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Masafumi Inoue, Masayuki Haruta
  • Patent number: 10919668
    Abstract: The inventive label is prepared from a polyester with an intrinsic viscosity of 0.58 dl/g or more. The label has a base film with a thickness of 8-30 ?m and a difference in specific heat capacity ?Cp between temperatures lower and higher than Tg of 0.2 J/(g·° C.) or more. The label has a tensile elongation at break of 5% or more in both a main shrinkage direction and an orthogonal direction. A difference between the absorbancy ratio (absorbancy at 1340 cm?1/absorbancy at 1410 cm?1) in the main shrinkage direction of the label and the absorbancy ratio in the direction orthogonal to the main shrinkage direction of the label is 0.2 or more. The label has a difference between a maximum value and a minimum value of a length in a vertical direction of the label of 3 mm or less.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: February 16, 2021
    Assignee: TOYOBO CO., LTD.
    Inventors: Masayuki Haruta, Norimi Tabota