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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
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.
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公开(公告)号：US20210188474A1
公开(公告)日：2021-06-24
申请号：US16756086
申请日：2018-08-10
Applicant: YOSHINO KOGYOSHO CO., LTD.
Inventor： Masato SUZUKI , Junichi CHIBA , Masaaki SASAKI
Abstract: A double container includes: an outer layer body including an outer mouth portion and a barrel portion; an inner layer body including an inner mouth portion and a containing portion; an outside air introduction port for introducing outside air; and a plurality of vertical ribs arranged with spacing in a circumferential direction on an inner surface of the outer layer body or an outer surface of the inner layer body, and each extending over the outer mouth portion to the shoulder portion or extending over the inner mouth portion to the containing portion, wherein at least one of the plurality of vertical ribs faces the outside air introduction port.
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公开(公告)号：US20200339300A1
公开(公告)日：2020-10-29
申请号：US16957877
申请日：2018-11-07
Applicant: YOSHINO KOGYOSHO CO., LTD.
Inventor： Tadayoshi OSHINO , Junichi CHIBA
Abstract: A synthetic resin container has an outer layer body and an inner layer body and formed by biaxial stretching blow molding. The synthetic resin container has a cylindrical mouth portion, a shoulder portion located below the mouth portion and having a diameter gradually increasing downward, a body portion being continuous with a lower end of the shoulder portion, and a bottom portion configured to close a lower end of the body portion. The mouth portion has an outside air introduction port configured to introduce outside air between the outer layer body and the inner layer body, and the shoulder portion has at least one shoulder rib forming a concave or convex shape and extending from the mouth portion side to the body portion side.
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4.发明申请公开(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
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.
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