公开(公告)号：US11148402B2

公开(公告)日：2021-10-19

申请号：US17269379

申请日：2019-08-30

Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.

Inventor： Yuuki Tashiro ,  Takayuki Ishihara ,  Azusa Otsuki ,  Kenji Ichikawa ,  Toshiki Yamada ,  Seishi Yoshikawa ,  Koki Shibata

IPC: B32B27/08 ,  B32B27/32

Abstract: A multilayer container including: an outermost layer (1) containing a propylene-based polymer A containing homopolypropylene as a main component having a melt flow rate in a range of 2.0 to 10.0 g/10 min; an inner layer (2) containing 50 to 99% by weight of a propylene-based polymer B containing homopolypropylene as a main component having a melt flow rate of not more than 5.0 g/10 min and an isotactic index of not less than 93%, and 1 to 50% by weight of an ethylene-α-olefin copolymer C; and a barrier layer (4) occupying 5 to 20% by weight of the whole container. The ratio (L/D) of container height (L) to diameter (D) is not less than 0.5, and a volume shrinkage based on volume measured before and after heat sterilization at 121° C. for 30 minutes is not more than 5%.

公开(公告)号：US20150251390A1

公开(公告)日：2015-09-10

申请号：US14430328

申请日：2013-09-27

Applicant: Toyo Seikan Group Holdings, Ltd.

Inventor： Takayuki Ishihara ,  Yuuki Tashiro ,  Kota Mori ,  Go Saito

IPC: B32B27/08 ,  B65D25/14 ,  B32B1/02 ,  B32B27/18 ,  B32B27/32 ,  B32B7/12 ,  B65D1/28 ,  B32B27/30

CPC classification number: B32B27/08 ,  B32B1/02 ,  B32B7/12 ,  B32B27/18 ,  B32B27/306 ,  B32B27/32 ,  B32B2250/24 ,  B32B2307/412 ,  B32B2307/7244 ,  B32B2307/74 ,  B32B2439/00 ,  B32B2439/70 ,  B65D1/28 ,  B65D25/14

Abstract: A multilayered container includes at least a polyolefin inner layer; an adhesive layer; a gas-barrier layer; an oxygen-absorbing layer; a gas-barrier layer; an adhesive layer; a polyolefin outer layer, and having at least a body portion and a bottom portion, wherein the gas-barrier layers include an ethylene-vinyl alcohol copolymer, the oxygen-absorbing layer includes an oxygen-absorbing resin composition that contains the ethylene-vinyl alcohol copolymer and an oxidizing organic component, an adsorbing agent is contained on the side inside of said gas-barrier layer, the thickness of the multilayered container at the thinnest portion is not more than 430 μm, and the amount of oxygen absorbed after the heat-sterilization is not less than 23 cc per gram of the oxygen-absorbing resin composition. Despite of this decreased thickness, the multilayered container maintains excellent oxygen-barrier property and property for retaining flavor of the content even when it is subjected to the retort sterilization.

Abstract translation: 多层容器至少包括聚烯烃内层; 粘合层; 阻气层; 氧吸收层; 阻气层; 粘合层; 聚烯烃外层，并且至少具有主体部分和底部部分，其中阻气层包括乙烯 - 乙烯醇共聚物，氧吸收层包括含有乙烯 - 乙烯醇的氧吸收树脂组合物 共聚物和氧化性有机成分，所述阻气层的内侧含有吸附剂，最薄部的多层容器的厚度为430μm以下， 每克氧吸收树脂组合物的灭菌不小于23cc。 尽管厚度减小，但是即使进行蒸煮灭菌，多层容器也保持优异的氧气阻隔性和用于保持内含物质的性能。

公开(公告)号：US11298926B2

公开(公告)日：2022-04-12

申请号：US16493196

申请日：2018-03-14

Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.

Inventor： Yuuki Tashiro ,  Takayuki Ishihara ,  Azusa Otsuki

IPC: B32B1/02 ,  B32B27/32 ,  B32B27/30 ,  B32B7/12 ,  B32B27/08 ,  B65D65/40 ,  C08L23/12

Abstract: A gas-barrier multilayered container having (i) a layer of a propylene type polymer which chiefly includes a homopolypropylene having an isotactic index of not less than 93%, and (ii) a layer of an ethylene-vinyl alcohol copolymer having not less than two crystal melting peak temperatures. Also disclosed is a lustrous and shock-resistant multilayered container having at least (i) an outermost layer of a propylene type polymer A which chiefly includes a homopolypropylene having a melt flow rate of 2.0 to 10.0 g/10 min., and (ii) an inner layer of a propylene type polymer B which chiefly includes a homopolypropylene having a melt flow rate of not more than 1.0 g/10 min.

公开(公告)号：US10213991B2

公开(公告)日：2019-02-26

申请号：US14430328

申请日：2013-09-27

Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.

Inventor： Takayuki Ishihara ,  Yuuki Tashiro ,  Kota Mori ,  Go Saito

IPC: B28B23/00 ,  B29D22/00 ,  B32B27/08 ,  B65D65/40 ,  C03C17/32 ,  B32B27/32 ,  B32B1/02 ,  B32B7/12 ,  B32B27/18 ,  B32B27/30 ,  B65D1/28 ,  B65D25/14

Abstract: A multilayered container includes at least a polyolefin inner layer; an adhesive layer; a gas-barrier layer; an oxygen-absorbing layer; a gas-barrier layer; an adhesive layer; a polyolefin outer layer, and having at least a body portion and a bottom portion, wherein the gas-barrier layers include an ethylene-vinyl alcohol copolymer, the oxygen-absorbing layer includes an oxygen-absorbing resin composition that contains the ethylene-vinyl alcohol copolymer and an oxidizing organic component, an adsorbing agent is contained on the side inside of said gas-barrier layer, the thickness of the multilayered container at the thinnest portion is not more than 430 μm, and the amount of oxygen absorbed after the heat-sterilization is not less than 23 cc per gram of the oxygen-absorbing resin composition. Despite of this decreased thickness, the multilayered container maintains excellent oxygen-barrier property and property for retaining flavor of the content even when it is subjected to the retort sterilization.