Double-walled container

Patent metadata

Field	Value
Publication number	US-2016145015-A1
Application number	US-201414898869-A
Country	US
Kind code	A1
Filing date	Jun 26, 2014
Priority date	Jun 28, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

Double container includes: inner layer body provided with upper opening; outer layer body accommodating inner layer body and including mouth portion provided with aperture; and dispensing cap provided with content dispensing spout and fitted to mouth portion. Double container further includes: inside plug provided with dispensing passage and fitted to upper opening; and check valve configured to open and close dispensing passage. Dispensing cap has a cylindrical wall, and cylindrical wall has a lower end portion fitted to an outer circumferential surface of outer layer body to provide vent region inside dispensing cap. Throttle passage is provided in a passage extending from ambient air introducing hole through vent region to aperture.

First claim

1 . A double container, comprising:
an inner layer body provided with an upper opening contiguous with a content container portion; an outer layer body accommodating the inner layer body and including a mouth portion provided with an aperture, through which aperture ambient air is introduced between the inner layer body and the outer layer body; and a dispensing cap provided with a content dispensing spout and fitted to the mouth portion of the outer layer body, wherein the double container further comprises:
an inside plug provided with a dispensing passage and fitted to the upper opening, the dispensing passage placing the container portion in communication with the dispensing spout; and
a check valve configured to open and close the dispensing passage,
a vent region is provided inside the dispensing cap, and a throttle passage is provided in a passage extending from an ambient air introducing hole through the vent region to the aperture, the ambient air introducing hole placing the vent region in communication with the outside.

2 . The double container of claim 1 , wherein
the ambient air introducing hole is provided in the dispensing cap, the dispensing cap includes a cylindrical wall covering the outer circumference of the mouth portion, and the cylindrical wall includes a lower end portion fitted to an outer circumferential surface of the outer layer body to seal a lower end of the vent region, between the dispensing cap and the inside plug, a partition wall is provided to divide the interior of the dispensing cap into the vent region and a dispensing region connecting the dispensing passage and the dispensing spout, and the throttle passage is provided above the upper opening.

3 . The double container of claim 2 , wherein the throttle passage is provided in the dispensing cap together with the ambient air introducing hole.

4 . The double container of claim 2 , wherein the throttle passage is provided in the inside plug.

5 . The double container of claim 2 , wherein the throttle passage is a space between the dispensing cap and the inside plug.

6 . The double container of claim 1 , wherein
the inside plug has the dispensing passage in a ceiling wall covering the upper opening, and includes an inner circumferential wall standing from an edge of the ceiling wall, the dispensing cap includes a cylindrical wall that is engaged with and held by the mouth portion and that forms a vent passage in communication with the aperture between the mouth portion and an inner circumferential wall of the inside plug, and the dispensing spout and the ambient air introducing hole are provided in a top wall connecting to the cylindrical wall, the check valve includes a partition wall that is provided between the dispensing spout and the ambient air introducing hole and that extends between the ceiling wall and the top wall so as to define, with the inner circumferential wall, an inner space connecting to the ambient air introducing hole, the inside plug has a connection passage connecting the inner space and the vent passage between an upper surface of the inner circumferential wall and a lower surface of the top wall, and the throttle passage is provided in at least one of the vent passage and the connection passage.

7 . The double container of claim 6 , wherein the throttle passage is a narrow groove provided on at least one of an outer circumferential surface of the inner circumferential wall and an inner circumferential surface of the cylindrical wall.

8 . The double container of claim 6 , wherein the throttle passage is a narrow groove provided on at least one of an upper surface of the inner circumferential wall and a lower surface of the top wall.

9 . The double container of claim 6 , wherein one of the inner circumferential wall and the outer circumferential wall has a helical convex portion protruding toward the other.

10 . The double container of claim 6 , wherein the dispensing cap has a projection protruding from a lower surface of the top wall between the ambient air introducing hole and the inner circumferential wall.

11 . The double container of claim 6 , wherein the inside plug has a tubular wall that extends toward the container portion, and a spherical body that is displaceable inside the tubular wall in response to a change in position of the outer layer body.

12 . The double container of claim 1 , wherein
the dispensing cap includes a cylindrical wall covering the outer circumference of the mouth portion, and the cylindrical wall includes a lower end portion fitted to an outer circumferential surface of the outer layer body to define a vent region formed between the cylindrical wall and the mouth portion, and the throttle passage is provided below the upper opening.

13 . The double container of claim 12 , wherein the throttle passage is formed in a groove-like manner on an inner circumferential surface of the cylindrical wall in a lower end portion thereof.

14 . The double container of claim 12 , wherein the throttle passage is provided in the cylindrical wall.

15 . The double container of claim 1 , wherein
the check valve has a partition wall to separate the dispensing spout from the ambient air introducing hole to form at least one said vent region inside the dispensing cap, and the sum of the minimum cross-sectional area of each vent region is 0.11 mm 2 to 0.19 mm 2 .

16 . The double container of claim 15 , wherein a groove portion forming part of the vent region and having the minimum cross-sectional area in the vent region is provided on at least one of the cylindrical wall and the periphery of the inside plug.

17 . The double container of claim 16 , wherein the groove portion is provided on the periphery of the inside plug.

Assignees

• Hoshino Shinya
• Kuwahara Katsuhito
• Yoshino Kogyosho Co Ltd

Inventors

• Hoshino Shinya
• Kuwahara Katsuhito

Classifications

• B65D47/2056

  lift valve type (lift valves not opened by deformation B65D47/24) · CPC title

• B65D1/0215

  multilayered (B65D81/3837 takes precedence) · CPC title

• B65D47/32 Primary

  with means for venting · CPC title

• B65D47/2093

  slide valve type (slide valves not opened by deformation B65D47/26) · CPC title

• B65D47/0838

  located at an edge of the base element · CPC title