Barrier plug and container with barrier plug

Patent metadata

Field	Value
Publication number	US-10894649-B2
Application number	US-201716075237-A
Country	US
Kind code	B2
Filing date	Feb 3, 2017
Priority date	Feb 5, 2016
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

A barrier plug having a spout body to be attached to a container, and a cylindrical molded article inserted into the spout body, wherein the cylindrical molded article has a resin layer having a barrier resin, an oxygen transmission rate of the resin layer is 10000 mL·μm/m2·24 hrs·MPa (23° C. and 65% RH) or less, a water vapor transmission rate of the resin layer is 1000 g·μm/m2·24 hrs (38° C. and 90% RH) or less, and the cylindrical molded article forms a discharge flow path for discharging contents in the container to an outside.

First claim

The invention claimed is:

1. A barrier plug comprising a spout body to be attached to a container, and a cylindrical molded article inserted into the spout body, wherein
the cylindrical molded article comprises a resin layer comprising a barrier resin,
an oxygen transmission rate of the resin layer is 10000 mL·μm/m 2 ·24 hrs·MPa (23° C. and 65% RH) or less,
a rate of decrease in the oxygen transmission rate of the resin layer is 80 to 100% at 23° C. and 65% RH compared to 23° C. and 90% RH,
a water vapor transmission rate of the resin layer is 1000 g·μm/m 2 ·24 hrs (38° C. and 90% RH) or less, and
the cylindrical molded article forms a discharge flow path for discharging contents in the container to an outside.

2. The barrier plug according to claim 1 , wherein the spout body comprises a polyolefin-based resin.

3. The barrier plug according to claim 1 , wherein a melting point of the barrier resin is higher than a melting point of a resin constituting the spout body.

4. The barrier plug according to claim 1 , wherein the spout body has a layer covering at least part of an end surface of the cylindrical molded article at an end opposite to an end to be attached to the container, and
the covering layer covers an end surface of the resin layer comprising the barrier resin.

5. The barrier plug according to claim 1 , wherein the barrier resin comprises a vinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer.

6. The barrier plug according to claim 1 , wherein the cylindrical molded article comprises an inside layer and an outside layer,
the inside layer comprises a polyolefin-based resin, and
the outside layer is the resin layer.

7. The barrier plug according to claim 1 , wherein the cylindrical molded article comprises an inside layer, one or more intermediate layers, and an outside layer,
the inside layer comprises a polyolefin-based resin, and
the outside layer and/or the intermediate layer are the resin layer.

8. A container with a barrier plug, comprising a container and the barrier plug according to claim 1 attached to the container, wherein
the container comprises at least one or more selected from the group consisting of a laminated film having a resin layer composed of a barrier resin having an oxygen transmission rate of 10000 mL·μm/m 2 ·24 hrs·MPa (23° C. and 65% RH) or less and a water vapor transmission rate of 1000 g·μm/m 2 ·24 hrs (38° C. and 90% RH) or less, a laminated film having an aluminum foil layer, and a metal vapor-deposited film.

Assignees

• Hosokawa Yoko Kk

Inventors

• Takagi Naoki
• Takasu Kaoru
• Ichikawa Toru
• Kotani Takayuki
• Shinohara Tomonari

Classifications

• B65D75/5883 Primary

  connected to the package at the sealed junction of two package walls · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B32B27/30

  comprising vinyl {(co)polymers; comprising acrylic (co)polymers} · CPC title

• B65D75/58

  Opening or contents-removing devices added or incorporated during package manufacture {(B65D75/36, B65D85/1027 take precedence)} · CPC title

• B65D65/40

  Applications of laminates for particular packaging purposes {(B65D1/0215, B65D1/28, B65D3/22, B65D5/0281, B65D5/563, B65D9/30, B65D29/02, B65D31/02, B65D75/26, B65D77/2024, B65D81/1275, B65D81/3811, B65D81/3823, B65D81/3834, B65D81/3846, B65D81/3858, B65D81/3874, B65D81/3886, B65D81/3897 take precedence; laminates per se or laminated packages characterised by the composition or)} · CPC title