Plastic tube

Patent metadata

Field	Value
Publication number	US-10494149-B2
Application number	US-201615771383-A
Country	US
Kind code	B2
Filing date	Oct 26, 2016
Priority date	Oct 27, 2015
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

The invention proceeds from a tube produced from a plastics material, having a tube body, which has a first end and a second end, having a tube head, which is connected to the tube body at the first end and has a removal opening, and having a tube fold which is formed at the second end and has a first sealing surface and a second sealing surface, wherein the first and the second sealing surfaces are connected to one another in a fluid-tight manner. According to the invention, the sealing surfaces have arranged between them a retaining insert, which is connected to the first sealing surface and the second sealing surface in a fluid-tight manner.

First claim

The invention claimed is:

1. A plastic material tube, comprising:
a tube body having a first end and a second end;
a tube head having a removal opening connected to the tube body at the first end;
a tube fold formed at the second end of the tube body, the tube fold having a first sealing surface and a second sealing surface, wherein the first and second sealing surfaces are connected to each other in a fluid-tight manner; and
a retaining insert positioned between and connected to the first and second sealing surfaces in a fluid-tight manner.

2. The tube according to claim 1 , wherein the retaining insert comprises a support element and at least one end part, wherein the support element tapers to the at least one end part and has a streamlined shape.

3. The tube according to claim 2 , wherein a ratio of a maximum thickness of the support element that extends between the first sealing surface and the second sealing surface to a length of the retaining insert that extends along the first and second sealing surfaces is between 1:1 and 1:10.

4. The tube according to claim 3 , wherein the ratio is between 1:2 and 1:4.

5. The tube according to claim 1 , wherein the retaining insert further comprises at least one welded rib at least partly along one longitudinal extension of the first and second sealing surfaces.

6. The tube according to of claim 1 , further comprising a functional element fixed to the retaining insert.

7. The tube according to claim 6 , wherein the retaining insert defines at least one passage opening to affect a fluid exchange between an interior space of the tube body and an atmosphere surrounding the tube body.

8. The tube according to claim 7 , wherein the functional element is configured to close the passage opening.

9. The tube according to claim 6 , wherein an extension extends into the interior space of the tube, is formed on the retaining insert and is non-detachably connected to the functional element.

10. The tube according to claim 6 , further comprising a membrane arranged in the functional element.

11. The tube according to claim 6 , wherein the functional element is comprised of a membrane.

12. The tube according to claim 1 , wherein the retaining insert is comprised of a first material that can be connected in a fluid-tight manner to a second material of the sealing surfaces.

13. The tube according to claim 1 , wherein the retaining element defines at least one opening having an aperture cross-sectional area smaller than 350 μm 2 .

14. The tube according to claim 13 , wherein the aperture cross-sectional area is smaller than 20 μm 2 .

15. The tube according to claim 1 , wherein the retaining element comprises a first fastening element accessible from an outside thereof and is connectable to a second retaining element corresponding to the first fastening element.

Assignees

• Alpla Werke Alwin Lehner Gmbh & Co Kg

Inventors

• Kunz Johann

Classifications

• B65D2205/00

  Venting means · CPC title

• B65D35/24 Primary

  with auxiliary devices · CPC title

• B65D79/005

  Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting · CPC title