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公开(公告)号：US20210229410A1
公开(公告)日：2021-07-29
申请号：US15734978
申请日：2019-06-04
Applicant: TOYOBO CO., LTD.
Inventor： Shintaro ISHIMARU , Hiroko MARUYAMA , Tomoyuki HASHIDA , Masayuki HARUTA
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.
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Patent Agency Ranking
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
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.
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公开(公告)号：US20190315107A1
公开(公告)日：2019-10-17
申请号：US16313746
申请日：2017-06-20
Applicant: TOYOBO CO., LTD.
Inventor： Shintaro ISHIMARU , Masayuki HARUTA
Abstract: The polyester film is formed with a polyester resin whose main constituent component is ethylene terephthalate. The polyester film has two or more layers that include at least one fold holding layer, which is present on at least one of the film surfaces and has a total of at least one monomer component that can form an amorphous component of 12-30% by mol in all monomer components of the fold holding layer and a difference in amount of an amorphous component of 4-30% by mol obtained by deducting an amount of an amorphous component in a layer other than the fold holding layer from the amount of the amorphous component in the fold holding layer. The polyester film has a fold holding angle of 20-70 degrees and a heat shrinkage rate of 0-15% in the longitudinal and width directions when treated in 80° C. hot water for 10 seconds.
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公开(公告)号：US20190169386A1
公开(公告)日：2019-06-06
申请号：US16322282
申请日：2017-07-31
Applicant: TOYOBO CO., LTD.
Inventor： Masafumi INOUE , Masayuki HARUTA
IPC: C08J5/18
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.
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公开(公告)号：US20180162616A1
公开(公告)日：2018-06-14
申请号：US15580726
申请日：2016-06-08
Applicant: TOYOBO CO., LTD.
Inventor： Masafumi INOUE , Masayuki HARUTA
IPC: B65D75/00
CPC classification number: B65D75/002 , B32B27/36 , C08J5/18 , C08J2367/02
Abstract: The invention provides a heat-shrinkable polyester film which has sufficient heat shrinkage properties in a main shrinkage direction that is in the longitudinal direction, has low heat shrinkage in the width direction orthogonal to the main shrinkage direction, does not have excessively high shrinkage stress in the main shrinkage direction, and has small attenuation of the shrinkage stress, whereby the followability to a container which is an object to be packaged is high, and slack is less likely to be generated.
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公开(公告)号：US20160137833A1
公开(公告)日：2016-05-19
申请号：US14897984
申请日：2014-05-20
Applicant: TOYOBO CO., LTD.
Inventor： Masayuki HARUTA , Masafumi INOUE
CPC classification number: C08L67/02 , B29C55/14 , B29C61/003 , B29K2067/00 , B29K2105/02 , C08J5/18 , C08J2367/02 , C08J2467/02 , G09F3/02 , G09F3/04 , G09F2003/0272
Abstract: A heat-shrinkable polyester-based film is provided, which is heat-shrinkable in the longitudinal direction and which is freed from various problems, particularly curling-up or peeling in a bonded area. The heat-shrinkable polyester-based film is characterized by an A1/A2 (absorbance) ratio in the longitudinal direction, which is the main shrinking direction of the film, of 0.55 to 1, with an A1/A2 ratio in the width direction perpendicular to the main shrinking direction of 0.5 to 0.9, wherein A1 is the absorbance of the film at 1340 cm−1 and A2 is the absorbance of the film at 1410 cm−1 as determined by polarized ATR-FTIR spectroscopy, and a hot-water shrinkage of 35 to 60% in the longitudinal direction of the film and −3 to 12% in the width direction of the film, wherein the hot-water shrinkage is determined by dipping the film in hot water at 90° C. for 10 seconds.
Abstract translation: 提供了一种热收缩性聚酯类膜，其在纵向方向上是可热收缩的，并且不存在各种问题，特别是在接合区域中卷曲或剥离。 热收缩性聚酯系膜的特征在于，作为膜的主收缩方向的长度方向的A1 / A2（吸光度）比为0.55〜1，宽度方向的A1 / A2比垂直 主收缩方向为0.5〜0.9，其中A1为1340cm -1处的膜的吸光度，A2为通过偏振ATR-FTIR光谱测定的1410cm -1处的膜的吸光度，热水 膜的长度方向的收缩率为35〜60％，膜的宽度方向的收缩率为-3〜12％，其中热水收缩通过将膜浸渍在90℃的热水中10秒来测定 。
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