METHOD FOR MANUFACTURING CONTAINER AND METHOD FOR SEPARATING INNER LAYER

• US 20190329477A1
• Filed: 04/18/2019
• Published: 10/31/2019
• Est. Priority Date: 04/27/2018
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yokoyama, Tetsuya, Fukui, Shigeki, Takada, Hitoshi, Shiba, Akira
• Granted Patent: US 11,530,068 B2
• Time in Patent Office: Days
• CPC Class Codes: B05B 11/0041 compensating underpressure without contact of the fluid remaining in the container with the atmospheric air B05B11/026 and B05B11/028 take precedence
• CPC Class Codes: B05B 11/026 Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
• CPC Class Codes: B29C 2949/3032 having components being injected
• CPC Class Codes: B29C 2949/3094 preform having at least partially loose components, e.g. at least partially loose layers
• CPC Class Codes: B29C 49/071 Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
• CPC Class Codes: B29L 2009/001 the layers being loose
• CPC Class Codes: B29L 2031/7158 Bottles
• CPC Class Codes: B65D 1/0215 multilayered B65D81/3837 takes precedence

Abstract

Provided is a method for manufacturing a container including a casing configured to contain a content, the casing including an inner layer having an inner layer opening and an outer layer having an air communication port communicating between a space between the outer layer and the inner layer and the outside. The method includes preparing a casing in which at least part of the inner layer and at least part of the outer layer are in contact with each other, inserting a support column inside the inner layer through the inner layer opening of the prepared casing, and separating the inner layer from the outer layer by supplying air into the space through the air communication port to bring part of the separated inner layer into contact with the support column. The support column includes a columnar portion and an extending portion extending from the columnar portion.

Claims

1. A method for manufacturing a container comprising a casing configured to contain a content, the casing including an inner layer having an inner layer opening for supplying the content to an outside and an outer layer covering the inner layer and having an air communication port communicating between a space between the outer layer and the inner layer and the outside, the method comprising the steps of:

preparing a casing in which at least part of the inner layer and at least part of the outer layer are in contact with each other;

inserting a support column inside the inner layer through the inner layer opening of the prepared casing; and

after the insertion step, separating the inner layer from the outer layer by supplying air into the space through the air communication port to bring part of the separated inner layer into contact with the support column,

wherein the support column includes a columnar portion and an extending portion extending from the columnar portion in a direction intersecting a longitudinal direction of the columnar portion.

2. The method for manufacturing the container according to claim 1, wherein the separation step includes joining a jig to the air communication port and supplying air with a pressure higher than a pressure inside the inner layer from the jig into the space.

3. The method for manufacturing the container according to claim 1, wherein the separation step includes supplying the air into the space by reducing a pressure inside the inner layer.

4. The method for manufacturing the container according to claim 1, wherein the columnar portion includes a supply port for supplying air inside the inner layer or absorbing air inside the inner layer.

5. The method for manufacturing the container according to claim 4, wherein the air is supplied to the space by absorbing the air inside the inner layer through the supply port in the columnar portion.

6. The method for manufacturing the container according to claim 1, wherein the support column is cross-shaped in cross section intersecting the longitudinal direction of the support column.

7. The method for manufacturing the container according to claim 1, wherein the extending portion is an inner bag that is inflated or deflated according inner pressure.

8. The method for manufacturing the container according to claim 2, the separation step includes intermittently supplying air into the space.

9. The method for manufacturing the container according to claim 1, the method further comprising, before the insertion step, a preparation step of inserting a needle through the air communication port to separate a portion of the inner layer adjacent to the air communication port from the outer layer.

10. The method for manufacturing the container according to claim 1, the method further comprising, before the insertion step, a preparation step of supplying air through the air communication port to separate a portion of the inner layer adjacent to the air communication port from the outer layer.

11. The method for manufacturing the container according to claim 1, the method further comprising, after the separation step, a restoration step of supplying air inside the inner layer through the inner layer opening to restore a shape of the inner layer.

12. The method for manufacturing the container according to claim 1, wherein the container comprises an ink cartridge configured to be installed in a liquid ejection apparatus that ejects liquid droplets to a recording medium for printing, the ink cartridge containing ink inside the inner layer.

13. The method for manufacturing the container according to claim 12, further comprising, after the separation step, the step of attaching a joint including a valve mechanism to the inner layer opening of the container.

14. The method for manufacturing the container according to claim 1, wherein the air communication port is disposed at a position opposing the inner layer opening.

15. The method for manufacturing the container according to claim 1, wherein the outer layer is made from polyethylene terephthalate, and the inner layer is made from polyethylene or polypropylene.

16. The method for manufacturing the container according to claim 1, wherein the prepared casing is formed by blow molding a laminated preform that is a lamination of an inner-layer preform to be molded to the inner layer and an outer-layer preform to be molded to the outer layer,

17. The method for manufacturing the container according to claim 1, wherein the casing prepared by the preparation step is formed by injection blow molding.

18. The method for manufacturing the container according to claim 1, wherein the casing is cylindrical in shape.

19. The method for manufacturing the container according to claim 1, wherein a direction in which the extending portion extends and the longitudinal direction of the columnar portion intersect at right angles.

20. A method for separating an inner layer of a casing from an outer layer of the casing, the casing being configured to contain a content and including an inner layer having an inner layer opening for supplying the content to an outside and an outer layer covering the inner layer and having an air communication port communicating between a space between the outer layer and the inner layer and the outside, the method comprising the steps of:

preparing a casing in which at least part of the inner layer and at least part of the outer layer are in contact with each other;

inserting a support column inside the inner layer through the inner layer opening of the prepared casing; and

after the insertion step, separating the inner layer from the outer layer by supplying air into the space through the air communication port to bring part of the separated inner layer into contact with the support column,

wherein the support column includes a columnar portion and an extending portion extending outward from the columnar portion.