公开(公告)号：US20230211925A1

公开(公告)日：2023-07-06

申请号：US18174945

申请日：2023-02-27

Applicant: YOSHINO KOGYOSHO CO., LTD.

Inventor： Hiroshi HOSOKOSHIYAMA ,  Junichi CHIBA ,  Seiji ISO

IPC: B65D25/54 ,  B29C45/16 ,  B29B11/08 ,  B29C45/00 ,  B65D1/02 ,  B32B1/02

CPC classification number: B65D25/54 ,  B29C45/1607 ,  B29C45/164 ,  B29C45/1646 ,  B29B11/08 ,  B29C45/0046 ,  B65D1/0215 ,  B32B1/02 ,  B29C45/2806

Abstract: A method of injection molding a test tube-shaped preform for biaxial stretch blow molding includes supplying a major material resin from outer and inner flow paths to a combined flow path for a predetermined time and rate. For a period of time within a range of the predetermined time period during which the major material resin is supplied, the intermediate layer resin is simultaneously supplied from the middle flow path to the combined flow path at a second predetermined supplying rate. A columnar laminated molten resin is injected into a cavity of a metal mold connected to a tip of the nozzle through a gate to fill the cavity, the columnar laminated molten resin being composed of the major material resin and the intermediate layer resin formed in the major material resin in a laminated manner that are combined into a columnar shape at the combined flow path.

公开(公告)号：US20210039822A1

公开(公告)日：2021-02-11

申请号：US16963916

申请日：2018-11-14

Applicant: YOSHINO KOGYOSHO CO., LTD.

Inventor： Hiroshi HOSOKOSHIYAMA

IPC: B65D1/02 ,  B65D1/32 ,  B29C49/06

Abstract: A synthetic resin-made laminated peelable container, formed by blow molding a preform assembly in which an inner preform is assembled into an outer preform, includes: an outer layer body including a tubular-shaped outer mouth and a closed-bottom tubular-shaped trunk contiguous from the outer mouth; an inner layer body including a tubular-shaped inner mouth arranged on inner side of the outer mouth and a containing chamber laminated on inner surface of the trunk in peelable manner for volume reduction and deformation; and an ambient air inlet configured to introduce ambient air between the outer and inner layer bodies. The containing chamber is integrally provided with at least two thick ribs extending along axis line of the trunk to increase thickness of the containing chamber compared with remaining portions.

公开(公告)号：US20200324931A1

公开(公告)日：2020-10-15

申请号：US16958799

申请日：2018-11-01

Applicant: YOSHINO KOGYOSHO CO., LTD.

Inventor： Hiroshi HOSOKOSHIYAMA ,  Yuichi OKUYAMA ,  Junichi CHIBA

IPC: B65D1/02 ,  B29C49/12 ,  B29C49/22 ,  B29C49/64 ,  B65D1/40

Abstract: A synthetic resin-made container has an outer layer body and an inner layer body separably laminated on an inner surface of the outer layer body and is formed by stretch blow molding, and has: a tubular mouth portion; a shoulder portion located below the mouth portion and increasing in diameter downward; a barrel portion connected to and located below the shoulder portion; and a bottom portion closing a lower end of the barrel portion, wherein the mouth portion has an outside air introduction hole for introducing outside air into a space between the outer layer body and the inner layer body, and the inner layer body is made of a crystalline resin, and has, in at least a part of the mouth portion in the inner layer body, a crystallized region having a higher degree of crystallinity than other regions.