Tubular container and method for producing same

Patent metadata

Field	Value
Publication number	US-11780648-B2
Application number	US-202117228646-A
Country	US
Kind code	B2
Filing date	Apr 12, 2021
Priority date	Oct 19, 2018
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

Provided is a tubular container capable of improving extractability of contents inside the container. The tubular container includes: a trunk portion having a tubular shape one end of which is closed, the trunk portion being formed by using a film member containing a resin material, and being capable of storing contents therein; and a spout portion attached to the other end of the trunk portion, and capable of closing the other end of the trunk portion. On a peripheral portion of the spout portion, the other end of the trunk portion is attached to a surface, of the spout portion, on a side opposite to the one end of the trunk portion.

First claim

What is claimed is:

1. A tubular container comprising:
a trunk portion having a tubular shape one end of which is closed, the trunk portion being formed by using a film member containing a resin material, and being capable of storing contents therein; and
a spout portion attached to the other end of the trunk portion, and capable of closing the other end of the trunk portion, wherein
on a peripheral portion of the spout portion, the other end of the trunk portion is attached to a surface, of the spout portion, on a side opposite to the one end of the trunk portion, the film member has a loop stiffness value (loop length: 60 mm) not greater than 600 mN, in a width direction of the trunk portion, and
the film member has a thickness not smaller than 30 μm and not greater than 200 μm.

2. The tubular container according to claim 1 , wherein
the spout portion includes a closing portion having a plate shape orthogonal to a longitudinal direction of the trunk portion,
the peripheral portion is an edge of the closing portion, and
on the peripheral portion of the closing portion, the other end of the trunk portion is adhered to a surface, of the closing portion, on the side opposite to the one end of the trunk portion.

3. The tubular container according to claim 2 , wherein
the closing portion of the spout portion includes a first half cut, and a first pull ring provided inside the first half cut.

4. The tubular container according to claim 3 , wherein
the spout portion further includes a first hinge cap attached to the spout portion, and a hole for spouting, formed in the first hinge cap, has an inner circumferential diameter greater than a diameter of the first half cut and an outer diameter of the first pull ring.

5. The tubular container according to claim 1 , wherein
the spout portion includes:
a to-be-opened portion;
a first area in which an inner peripheral surface of the trunk portion is adhered to a surface, on an outer side of the tubular container, of the peripheral portion that is an edge of the to-be-opened portion, over an entire circumference of the surface;
a second area in which a gas barrier film is provided on a surface on an inner side of the tubular container; and
an annular second half cut formed between the to-be-opened portion and the peripheral portion,
the film member includes a gas barrier layer, and
in a third area over an entire circumference of the peripheral portion of the spout portion, the trunk portion is adhered and attached to the spout portion such that the first area and the second area overlap each other, as viewed from a normal direction in the third area.

6. The tubular container according to claim 5 , wherein
the spout portion includes a second pick-up portion extending from an inner side of the second half cut, and
the to-be-opened portion of the spout portion is removed along the second half cut by pulling the second pick-up portion with a predetermined force, thereby forming an opening in the spout portion.

7. The tubular container according to claim 5 , wherein
an edge of the gas barrier film is covered with the spout portion.

8. The tubular container according to claim 5 , wherein
the second pick-up portion is a pull ring having an annular part on a side opposite to the spout portion, and the annular part allows a finger to be inserted therein.

9. The tubular container according to claim 1 , further comprising a cap to be attached to the spout portion, wherein
the spout portion includes:
a third half cut formed in an annular shape;
a third pick-up portion extending from an inner side of the third half cut; and
a peripheral wall having a tubular shape, disposed on an outer side of the third half cut, and extending toward a side opposite to the trunk portion,
the cap includes an inner ring that is closely fitted to an inner peripheral surface of the peripheral wall in a state where the cap is attached to the spout portion, and
a part of the spout portion is removed along the third half cut by pulling the third pick-up portion with a predetermined force, thereby forming an opening in the spout portion.

10. The tubular container according to claim 9 , wherein
the cap is a hinge cap including a fixing portion attachable to the spout portion, and a lid that is pivotally attached to the fixing portion via a hinge, and
the inner ring is provided in the fixing portion.

11. The tubular container according to claim 9 , wherein
the cap is a screw cap that is attachable to the peripheral wall in a thread-fitted manner.

12. The tubular container according to claim 10 , wherein
the cap includes a contact ring that is in contact with an edge, of the peripheral wall, on the side opposite to the trunk portion, in a state where the cap is attached to the spout portion.

13. The tubular container according to claim 9 , wherein
the third pick-up portion is a pull ring having a ring part on a side opposite to the spout portion, and the ring part allows a finger to be inserted therein.

14. The tubular container according to claim 1 , wherein
the spout portion includes:
a spouting tube portion having a tubular shape;
a flange portion extending outward from one end of the spouting tube portion; and
a cap seal welded to the other end of the spouting tube portion, and closing an opening at the other end of the spouting tube portion,
the spouting tube portion and the flange portion are formed of a first laminate including a first sealant layer, and a first gas barrier layer having gas barrier property,
the cap seal is formed of a second laminate including a second sealant layer that can be welded to the first sealant layer, and a second gas barrier layer having gas barrier property, and
the other end of the trunk portion is welded to the first sealant layer, on the peripheral portion of the flange portion.

15. The tubular container according to claim 14 , wherein
the spouting tube portion has, on an outer peripheral surface thereof, a thread that allows the cap to be attached thereto in a thread-engagement manner.

16. The tubular container according to claim 14 , wherein
an area, having a predetermined width including a cross section, of the first laminate is folded back.

17. The tubular container according to claim 14 , wherein
the first laminate has a cross section covered with the first sealant layer.

18. The tubular container according to claim 1 , wherein
the film member is a lamination film,
the trunk portion is formed by adhering end parts of the film member, and
the trunk portion includes a joint portion extending along a longitudinal direction thereof, the joint portion being formed by making parts of an innermost layer at the end parts of the film member face each other, and adhering the facing parts.

19. The tubular container according to claim 18 , wherein
the film member includes, as an outermost layer, a layer containing polyethylene terephthalate.

20. The tubular container according to claim 18 , wherein
the joint portion is provided with tabs extending from the end parts of the film member.

21. The tubular container according to claim 18 , wherein
the joint portion has notches formed in the end parts of the film member.

22. The tubular container according to claim 18 , wherein
the trunk portion is formed by making innermost layers at end parts of two or more film members face each other, and adhering the innermost layers to each other, and
the trunk portion has a

Assignees

• Toppan Printing Co Ltd

Inventors

• Miyoshi Seiki
• Kawasaki Minoru
• Saito Takeshi

Classifications

• B65D35/08 Primary

  from plastics material · CPC title

• B65D35/44

  Closures (closure members of interest apart from this application B65D39/00 - B65D55/00; forming bottom closures after filling B65B7/14) · CPC title

• B29D22/003

  Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks · CPC title

• B29D23/20

  Flexible squeeze tubes, e.g. for cosmetics · CPC title

• B65D47/0804

  integrally formed with the base element provided with the spout or discharge passage · CPC title