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1. 发明公开

EP4276140A1 POLYPROPYLENE-BASED HEAT-SHRINKABLE FILM 审中-实审
公开(公告)号：EP4276140A1
公开(公告)日：2023-11-15
申请号：EP22921017.4
申请日：2022-03-31
申请人： TOYOBO CO., LTD.
发明人： YAMAZAKI, Atsuro , ISHIMARU, Shintaro , HARUTA, Masayuki
IPC分类号： C08J5/18
摘要： Provided herein is a heat-shrinkable polypropylene film having a specific gravity of 0.95 or less, and that exhibits excellent low-temperature shrinkability and small natural shrinkage. A drawn film is provided that comprises a polypropylene resin composition, wherein the drawn film is a polypropylene heat-shrinkable film satisfying the following (1) to (6):
(1) a hot water thermal shrinkage rate in a widthwise direction of 40% or more and 80% or less when the film is immersed in 90°C hot water for 10 seconds,
(2) a hot water thermal shrinkage rate in a lengthwise direction of - 5% or more and 12% or less when the film is immersed in 90°C hot water for 10 seconds,
(3) a specific gravity of 0.87 or more and 0.95 or less,
(4) one or more melting peak temperatures in each of a range of 70°C or higher and 100°C or lower, and a range of higher than 100°C and 170°C or lower, as measured with a differential scanning calorimeter,
(5) a refractive index difference Ny - Nx of 0.015 or more and 0.030 or less, where Ny is a widthwise refractive index, and Nx is a lengthwise refractive index, and
(6) a widthwise natural shrinkage rate of 0.1% or more and 3.0% or less after the polypropylene heat-shrinkable film is aged for 672 hours in a 40°C, 65% RH atmosphere.

2. 发明公开

EP4180217A1 HEAT-SHRINKABLE POLYESTER-BASED FILM ROLL 审中-实审
公开(公告)号：EP4180217A1
公开(公告)日：2023-05-17
申请号：EP21837325.6
申请日：2021-07-01
申请人： TOYOBO CO., LTD.
发明人： ISHIMARU, Shintaro , HARUTA, Masayuki
IPC分类号： B29K67/00 , B29L7/00 , B65D65/02 , B29C61/06 , C08J5/18
摘要： [PROBLEMS] It is an object of the present invention to provide a heat-shrinkable polyester-based film roll which can reduce defects caused during a heat shrinking step due to the variation of a heat shrinkage rate in the heat-shrinkable polyester-based film roll having the longitudinal direction as the main shrinkage direction, specifically, defects of the film when covering an object by a wrap-around method and heat-shrunk. [SOLUTIONS] A heat-shrinkable polyester-based film roll, comprising a core; and a heat-shrinkable polyester-based film having a longitudinal direction as a main shrinkage direction that is wound around the core; wherein the film (roll) satisfy predetermined polyester composition, and all samples cutout every about 100 m have a heat shrinkage rate measured by immersion in hot water of 90°C for 10 seconds of 30% or more and 80% or less and ± 3% or less of an average in the longitudinal direction.

3. 发明公开

EP3868807A1 POLYESTER RESIN FOR HEAT-SHRINKABLE FILM, HEAT-SHRINKABLE FILM, HEAT-SHRINKABLE LABEL, AND PACKAGE 审中-实审转让
公开(公告)号：EP3868807A1
公开(公告)日：2021-08-25
申请号：EP19872609.3
申请日：2019-09-25
申请人： TOYOBO CO., LTD.
发明人： NAKAGAWA, Satoru , UOTANI, Kosuke , OHASHI, Hideto , HARUTA, Masayuki , ISHIMARU, Shintaro
IPC分类号： C08G63/183 , B29C61/02 , C08J5/18 , G09F3/04
摘要： The present invention provides a polyester resin for heat-shrinkable film which can reduce the film-production cost while ensuring the film-preparation property and the film strength. The present invention discloses 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 satisfies the following requirements (i) to (iv) : (i) the polyester resin has an intrinsic viscosity (IV) of not less than 0.65 and less than 0.70 d1 /g; (ii) the polyester resin has a carboxyl end group concentration (AV) of from 8 to 25 eq/t; (iii) the polyester resin has a color b value of from 1.0 to 8.0 in an L*a*b* color system; and (iv) the polyester resin contains aluminum atom and phosphorus atom, wherein an amount of the aluminum atom in the polyester resin is 15 to 40 ppm and wherein a molar ratio of the phosphorus atom to the aluminum atom in the polyester resin is 1.8 to 2.6.

4. 发明公开

EP3862381A1 LOW ADSORPTION SEALANT FILM, LAYERED BODY, AND PACKAGING BAG 审中-公开
公开(公告)号：EP3862381A1
公开(公告)日：2021-08-11
申请号：EP19869230.3
申请日：2019-09-30
申请人： TOYOBO CO., LTD.
发明人： MARUYAMA, Hiroko , HARUTA, Masayuki , ISHIMARU, Shintaro
IPC分类号： C08J5/18 , B32B27/36 , B65D65/40
摘要： [Problem]
To provide 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.
[Solution]
A sealant film having low adsorption comprising;
the film has at least one heat sealing layer consisting of a polyester component,
wherein the film satisfies following requirements (1) to (3):
(1) 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 N/15 mm or more and 5 N/15 mm or less;
(2) a heat sealing strength of the heat sealing layer being heat sealed to another heat sealing layer at 140°C and 0.2 MPa for 2 seconds is 8 N/15 mm or more and 30 N/15 mm or less;
(3) a film density including all layers is 1.20 or more and less than 1.39.

5. 发明公开

EP3581604A1 RAW COPOLYESTER MATERIAL FOR AMORPHOUS FILM, HEAT-SHRINKABLE POLYESTER-BASED FILM, HEAT-SHRINKABLE LABEL, AND PACKAGE 审中-实审转让
公开(公告)号：EP3581604A1
公开(公告)日：2019-12-18
申请号：EP18750750.4
申请日：2018-02-06
申请人： TOYOBO CO., LTD.
发明人： HARUTA, Masayuki , ISHIMARU, Shintaro , OHASHI, Hideto , MINAMI, Soichiro
IPC分类号： C08G63/183 , C08J5/18 , G09F3/04 , B65D25/20
摘要： A problem to be solved by the present invention is to provide a heat-shrinkable polyester film which exhibits a high heat-shrinking rate in a width direction, which exhibits a small natural shrinking rate in a longitudinal direction, and which exhibits small changes in the shrinking rate before and after the aging treatment, and to provide a raw material for preparing the heat-shrinkable polyester film as such.
An amorphous copolymerized polyester raw material for a film, characterized that, it satisfies the following requirements (1) to (4), and is used for producing a film:
(1) 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; (2) 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; (3) The raw material has an intrinsic viscosity of from 0.70 dl/g to 0.86 dl/g; and (4) The raw material has a melt viscosity of 200Pa·S or less, when measured at a shear rate of 6080/S at 250°C.

6. 发明公开

EP4332946A1 LASER-PRINTED ADHESIVE LAMINATE 审中-实审
公开(公告)号：EP4332946A1
公开(公告)日：2024-03-06
申请号：EP22795386.6
申请日：2022-03-23
申请人： TOYOBO CO., LTD.
发明人： ISHIMARU, Shintaro , HARUTA, Masayuki
IPC分类号： G09F3/02 , G09F3/03 , G09F3/10
摘要： To provide an adhesive laminate suitable for high-mix low-volume production without blurring of printing due to external rubbing or the like, or a security label using the adhesive laminate. An adhesive laminate comprising at least one laser-printed layer capable of being printed by laser irradiation, wherein the laser-printed layer includes a laser-printed portion and a non-printed portion, an absolute value of a difference between the color L* values of the printed portion and the non-printed portion is 1.0 or more and 10.0 or less, and a pressure-sensitive adhesive layer is provided on at least one surface of the adhesive laminate.

7. 发明公开

EP4317011A1 LASER-PRINTED PACKAGING BODY 审中-实审
公开(公告)号：EP4317011A1
公开(公告)日：2024-02-07
申请号：EP22775027.0
申请日：2022-03-04
申请人： TOYOBO CO., LTD.
发明人： ISHIMARU, Shintaro , HARUTA, Masayuki
IPC分类号： B65D65/40 , B32B27/00 , B32B27/20 , B65D33/00
摘要： The present invention is packaging comprising at least one laser printing layer printable by laser irradiation, in which the laser printing layer includes a laser-printed portion printed by laser and a non-printed portion, at least a part of the packaging is sealed by fusion cutting, and the packaging meets the following requirements of (1) to (3). In addition, the present invention provides packaging that has laser printing unaccompanied by peeling off and is formed by fusion-cut sealing with high productivity and economic efficiency. (1) the thickness of the laser printing layer is 5 pm or more and 200 pm or less; (2) the difference in color L* value between the laser-printed portion and the non-printed portion is 1.0 or more and 10 or less; and (3) the fusion-cut sealing strength is 5 N/15 mm or more and 40 N/15 mm or less.

8. 发明公开

EP3127682A1 HEAT-SHRINKABLE POLYESTER FILM AND PACKAGE 有权
标题翻译： WERRMESCHRUMPFENDE POLYESTERFOLIE UND VERPACKUNG DARAUS
公开(公告)号：EP3127682A1
公开(公告)日：2017-02-08
申请号：EP15772193.7
申请日：2015-03-03
申请人： Toyobo Co., Ltd.
发明人： HARUTA, Masayuki , ISHIMARU, Shintaro
IPC分类号： B29C61/06 , B29C55/12 , B65D23/08 , C08J5/08 , G09F3/04 , B29K67/00 , B29K105/02 , B29L7/00
CPC分类号： B32B27/36 , B29C55/005 , B29C55/143 , B29K2067/00 , B29K2995/0049 , B29K2995/0053 , B32B2307/54 , B32B2307/582 , B32B2307/736 , B32B2309/02 , B32B2309/04 , B32B2439/00 , B65D23/0878 , B65D75/00 , B65D75/002 , B65D2203/02 , C08G63/183 , C08J5/18 , C08J2367/02 , C08J2467/02 , C08L67/02 , Y10T428/1328 , Y10T428/31786
摘要： The present invention aims to provide a heat-shrinkable polyester film which has high heat shrinkage in the width direction, exhibits small heat shrinkage in the longitudinal direction, and has high mechanical strength in the longitudinal direction, favorable perforation opening property, and excellent shrinkage finishing properties. A heat shrinkable polyester film which satisfies the following requirements (1) to (4): (1) the film has a hot-water heat shrinkage of not less than 55% and not more than 90% in a main shrinking direction of the film when dipped in hot water at 98°C; (2) the film has a hot-water heat shrinkage of not less than -5% and not more than 12% in a direction orthogonal to the main shrinking direction of the film when dipped in hot water at 98°C; (3) the film has a difference in specific heat capacity ΔC p between at a lower and a higher temperature than Tg of not less than 0.1 J/(g•°C) and not more than 0.7 J/(g•C) when a reverse heat flow is measured with a temperature modulated DSC; and (4) the film has a tensile breaking strength of not less than 70 MPa and not more than 150 MPa in the direction orthogonal to the main shrinking direction of the film.
摘要翻译：本发明的目的在于提供一种在宽度方向上具有高热收缩性，长度方向的热收缩率小，长度方向的机械强度高，良好的开孔性，收缩性优异的热收缩性聚酯薄膜属性。满足以下要求（1）至（4）的热收缩聚酯膜：（1）膜的主收缩方向的热水热收缩率不小于55％且不大于90％当浸入98℃的热水中时; （2）当浸渍在98℃的热水中时，该膜的热水热收缩率在与膜的主收缩方向正交的方向上不小于-5％且不大于12％; （3）该薄膜的比热容“C p在下限和高于Tg之间的差异不小于0.1J /（g·℃）且不大于0.7J /（g€¢ C）当用温度调制DSC测量反向热流时; 和（4）该膜在与膜的主收缩方向垂直的方向上的拉伸断裂强度为70MPa以上且150MPa以下。

9. 发明公开

EP2998341A1 HEAT-SHRINKABLE POLYESTER FILM AND PACKAGE 有权
标题翻译： WERRMESCHRUMPFENDE POLYESTERFOLIE UND VERPACKUNG DARAUS
公开(公告)号：EP2998341A1
公开(公告)日：2016-03-23
申请号：EP14798436.3
申请日：2014-05-14
申请人： Toyobo Co., Ltd.
发明人： ISHIMARU, Shintaro , HARUTA, Masayuki , MUKOYAMA, Yukinobu
IPC分类号： C08J5/18 , C08L67/02 , C08L67/04
CPC分类号： C08J5/18 , C08G63/183 , C08G63/60 , C08J2367/02 , C08J2467/02
摘要： Provided is a heat-shrinkable polyester film that suppresses deterioration of the shrinkage finish property associated with a decline in performance during aging and does not loosen even after being used as a label. This heat-shrinkable polyester film comprising a polyester of a predetermined composition fulfills all of the following: (1) a ratio A1/A2 of the absorbancy (A1) at 1340 cm -1 and the absorbancy (A2) at 1410 cm -1 of the film measured by polarized ATR-FTIR from 0.45 to 0.75 or from 0.40 to less than 0.45 in either the width direction or longitudinal direction of the film; (2) a ratio (shrinkage stress after 30 seconds/maximum shrinkage stress) of the shrinkage stress after 30 seconds when the film is heat shrunk for 30 seconds in 90°C hot air (shrinkage stress after 30 seconds) and the maximum shrinkage stress of from 75% to 100%; and (3) a hot-water shrinkage in the width direction of from 30% to 55% when, after aging the film for 672 hours in a 30°C, 85% RH atmosphere, the aged film is dipped in 70°C water for 10 seconds.
摘要翻译：提供一种热收缩聚酯膜，其抑制与老化期间的性能下降相关的收缩性能劣化，即使在用作标签后也不会松动。该含有规定组合物的聚酯的热收缩性聚酯薄膜满足以下所有条件：（1）吸光度（A1）在1340cm -1处的比率A1 / A2和1410cm -1处的吸光度（A2）通过偏振ATR-FTIR在膜的宽度方向或纵向上从0.45至0.75或0.40至小于0.45测量的膜; （2）在90℃热风（30秒后的收缩应力）中热收缩30秒后的30秒后的收缩应力的比（30秒后的最大收缩应力）和最大收缩应力从75％到100％; 和（3）当在30℃，85％RH气氛中将膜老化672小时后，在宽度方向上的热水收缩率为30％至55％，将老化的膜浸入70℃的水中 10秒钟。

10. 发明公开

EP4227928A1 LASER-PRINTED DISPLAY BODY AND PACKAGING 审中-实审
公开(公告)号：EP4227928A1
公开(公告)日：2023-08-16
申请号：EP21879951.8
申请日：2021-10-06
申请人： TOYOBO CO., LTD.
发明人： ISHIMARU, Shintaro , HARUTA, Masayuki
IPC分类号： G09F3/00 , B41M5/26
摘要： PROBLEM: To provide, with high productivity, a high-quality display body, which, among display bodies at which laser printing is carried out, while having particularly high concealment, does not experience delamination of printing even where there is occurrence of rubbing or other such external stimulation, and which, due to its high definition and print density, is such as to permit lettering to be distinctly visually perceivable. SOLUTION MEANS: A display body characterized in that there is at least one white printing layer permitting printing by means of laser irradiation; said white printing layer has a nonprinted region and a printed region at which laser printing has been carried out; and (1) through (3), below, are satisfied. (1) An absolute value of a difference in color L* values between the printed region and the nonprinted region is not less than 1.0 but not greater than 10.0 (2) Total luminous transmittance of the nonprinted region is not less than 8% but not greater than 50% (3) Fractional decrease in thickness of the printed region in a cross-sectional direction is not less than 1 vol% but not greater than 80 vol% of that of the nonprinted region

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