公开(公告)号：US20240002614A1

公开(公告)日：2024-01-04

申请号：US18247309

申请日：2021-09-22

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: C08J5/18 ,  B29C48/00

CPC classification number: C08J5/18 ,  B29C48/0021 ,  B29K2995/0049 ,  B29K2995/0026 ,  B29L2031/744

Abstract: The invention provides a heat-shrinkable polyester film characterized by (1) a hot-water heat shrinkage rate in a width direction of the film of 40%-80% by immersing the film in hot-water at 90° C. for 10 seconds; (2) a hot-water heat shrinkage rate in a longitudinal direction of the film of 5%-10% by immersing the film in hot-water at 90° C. for 10 seconds; (3) a maximum peak height Sp on at least one surface of the film of 0.8-3.0 μm; (4) an arithmetical mean height Sa on at least one surface of the film of 0.03-0.2 μm; and (5) a degassing time for removing air from between the two identical polyester films is 14 seconds or less, wherein the films are formed by stacking a front surface of the one film on a back surface of the other film.

公开(公告)号：US20210061605A1

公开(公告)日：2021-03-04

申请号：US16964871

申请日：2019-01-28

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: B65H18/28 ,  B29C55/08 ,  B29C61/06 ,  B29C48/00 ,  B29C48/08

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 μm, (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.

公开(公告)号：US20180319539A1

公开(公告)日：2018-11-08

申请号：US15763702

申请日：2016-09-28

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: B65D23/08 ,  B65D75/00 ,  G09F3/04 ,  C08J5/18 ,  C08G63/195

CPC classification number: B65D23/0821 ,  B29K2995/0049 ,  B32B27/36 ,  B65D23/08 ,  B65D75/002 ,  B65D2203/02 ,  C08G63/16 ,  C08G63/195 ,  C08J5/18 ,  C08J2467/02 ,  G09F3/04

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 μm and a difference in specific heat capacity ΔCp 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.

公开(公告)号：US20180043607A1

公开(公告)日：2018-02-15

申请号：US15559738

申请日：2016-03-23

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: B29C55/08 ,  B29C61/06 ,  B29C47/00 ,  B29C47/88 ,  B32B7/12 ,  C08J5/18 ,  B32B27/30 ,  B32B37/15 ,  B32B27/36 ,  B65C3/26 ,  B65D23/08 ,  B29C63/00 ,  B32B27/08

CPC classification number: B29C55/08 ,  B29C47/0004 ,  B29C47/0021 ,  B29C47/0057 ,  B29C47/0066 ,  B29C47/8845 ,  B29C55/02 ,  B29C61/06 ,  B29C63/0065 ,  B29K2067/00 ,  B29L2031/744 ,  B32B7/12 ,  B32B27/08 ,  B32B27/302 ,  B32B27/36 ,  B32B37/153 ,  B32B2519/00 ,  B65C3/26 ,  B65D23/0878 ,  C08J5/18 ,  C08J2367/00 ,  C08J2467/00

Abstract: The invention provides a heat-shrinkable polyester film in which the differences in physical properties in the width direction are reduced even if the film has a small thickness. The heat-shrinkable polyester film has a main shrinkage direction in a width direction of the film and has (1) a thickness of 6-27 μm; (2) a maximum value of the molecular orientation angle of 5 degrees or less; (3) a hot-water shrinkage at 90° C. in the width direction of the film 40-85%; (4) a difference between a maximum value and a minimum value of the hot-water shrinkage at 90° C. in the width direction of the film of 2% or less; and (5) a difference between a maximum value and a minimum value of the maximum shrinkage stress at 90° C. in the width direction of the film of less than 0.3 MPa.

公开(公告)号：US20220306345A1

公开(公告)日：2022-09-29

申请号：US17615883

申请日：2020-06-01

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: B65D25/20 ,  B65C3/16 ,  C08G63/183 ,  G09F3/00

Abstract: [Problem] To provide a heat-shrinkable polyester film having excellent shrink finishing property due to the film's sufficient heat shrinkability and low shrinkage stress in the longitudinal direction, small change in the non-shrinkable direction of the film.
[Solution] The heat-shrinkable polyester film which heat-shrinks in the longitudinal direction and satisfying the following (1) to (6); (1) having a shrinkage of 35% to 70% in the longitudinal direction; (2) having a shrinkage of −8% to 7% in the width direction; (3) having a change rate of 5% to 22% when fixed in the longitudinal direction with fixed-length; (4) having a change rate of 5% to 20% in the width direction when fixed with 10% of slack in the longitudinal direction; (5) having a maximum shrinkage stress of 5 MPa to 15 MPa in the longitudinal direction; (6) having a stress at 10% elongation, F10, of 1 MPa to 5 MPa in the longitudinal direction and 0.5 MPa to 3 MPa in the width direction.

公开(公告)号：US20220126495A1

公开(公告)日：2022-04-28

申请号：US17431308

申请日：2020-02-05

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: B29C48/00 ,  B29C48/08 ,  B29C55/14 ,  B29C48/92 ,  B29C48/305

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.

公开(公告)号：US20220056223A1

公开(公告)日：2022-02-24

申请号：US17426626

申请日：2020-01-30

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: C08J5/18 ,  B29C48/00 ,  B29C55/12 ,  C08G63/83

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.

公开(公告)号：US20210370580A1

公开(公告)日：2021-12-02

申请号：US16649682

申请日：2018-09-03

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: B29C61/02 ,  B65H18/28

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 μm. 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.

公开(公告)号：US20190337272A1

公开(公告)日：2019-11-07

申请号：US16089840

申请日：2017-03-28

Applicant: TOYOBO CO., LTD.

Inventor： Masayuki HARUTA ,  Norimi TABOTA

IPC: B32B27/08 ,  B32B27/36 ,  B32B27/20 ,  B29C48/00 ,  B29C48/21 ,  B29C48/88 ,  B65C3/06 ,  B65D23/08

Abstract: The present invention provides a void-containing heat-shrinkable polyester film which has satisfactory shrinkage finishing properties and printability even if productivity is improved.The void-containing heat-shrinkable polyester film is a multilayer structure having a non-foamed layer on both outer sides of the foamed layer, and by controlling the film thickness, density, and number of moles of the amorphous component on both outer sides, specific heat shrinkage characteristics and gloss can be improved.