Package structure of roll-shaped thin film and packaging method thereof

Patent metadata

Field	Value
Publication number	US-11603279-B2
Application number	US-202117477506-A
Country	US
Kind code	B2
Filing date	Sep 16, 2021
Priority date	Sep 24, 2020
Publication date	Mar 14, 2023
Grant date	Mar 14, 2023

Abstract

A package structure of a roll-shaped thin film includes a thin film roll and a buffer layer. The thin film roll includes a winding core and a thin film wound around the winding core, and the buffer layer is wound around an outer circumference of the thin film. An end portion of the buffer layer is covered with an inner surface of an end portion of the thin film, and the thickness of the buffer layer is in a range of 1-20 mm.

First claim

What is claimed is:

1. A package structure of a roll-shaped thin film, comprising:
a thin film roll, comprising a winding core and a thin film wound around the winding core; and
a buffer layer wound around an outer circumference of the thin film, an initial portion of the buffer layer is covered with an inner surface of an end portion of the thin film, and a portion of the buffer layer is attached to the end portion of the thin film, wherein the thickness of the buffer layer is in a range of 1-20 mm;
wherein there is an overlapping region between the initial portion of the buffer layer and the end portion of the thin film, and the length of the overlapping region along a mechanical direction of the thin film is not less than 1 cm.

2. The package structure of the roll-shaped thin film of claim 1 , wherein the thin film is a metal foil.

3. The package structure of the roll-shaped thin film of claim 1 , wherein the ratio of the thickness of the buffer layer to the thickness of the thin film is more than 4.

4. The package structure of the roll-shaped thin film of claim 1 , wherein the length of the overlapping region along the mechanical direction is in a range of 1 cm to 50 cm.

5. The package structure of the roll-shaped thin film of claim 1 , wherein the portion of the buffer layer is attached to the end portion of the thin film by a connecting element or a binder.

6. The package structure of the roll-shaped thin film of claim 5 , wherein the connecting element comprises a first connecting end portion and a second connecting end portion, wherein the first connecting end portion is attached to the end portion of the thin film, and the second connecting end portion is attached to the portion of the buffer layer.

7. The package structure of the roll-shaped thin film of claim 1 , further comprises an antirust film, wherein the antirust film is sandwiched between the thin film and the buffer layer, and the antirust film does not cover both ends of the thin film roll.

8. The package structure of the roll-shaped thin film of claim 7 , further comprises two antirust end films disposed at both ends of the thin film roll respectively, and each of the antirust end films is detachable from the antirust film.

9. The package structure of the roll-shaped thin film of claim 1 , further comprises two buffer end caps disposed at both ends of the thin film roll respectively.

10. A packaging method of a roll-shaped thin film, comprising:
obtaining a thin film roll, wherein the thin film roll comprises a winding core and a thin film wound around the winding core;
obtaining a buffer layer;
covering an initial portion of the buffer layer with an inner surface of an end portion of the thin film, so as to form an overlapping region between the initial portion of the buffer layer and the end portion of the thin film;
attaching at least one portion of the end portion of the thin film to the buffer layer, wherein the at least one portion of the end portion of the thin film overlaps with the overlapping region; and
after attaching the at least one portion of the end portion of the thin film to the buffer layer, winding the buffer layer around an outer circumference of the thin film.

11. The packaging method of the roll-shaped thin film of claim 10 , wherein the thin film is a metal foil.

12. The packaging method of the roll-shaped thin film of claim 10 , wherein the ratio of the thickness of the buffer layer to thickness of the thin film is more than 4.

13. The packaging method of the roll-shaped thin film of claim 10 , wherein the length of the overlapping region along a mechanical direction of the thin film is not less than 1 cm.

14. The packaging method of the roll-shaped thin film of claim 10 , wherein the at least one portion of the end portion of the thin film is attached to the buffer layer by an adhesive tape or a binder.

15. The packaging method of the roll-shaped thin film of claim 10 , further comprising:
obtaining an antirust film;
overlapping the antirust film and the buffer layer;
covering the initial portion of the buffer layer and an end portion of the antirust film with the inner surface of the end portion of the thin film; and
winding the buffer layer and the antirust film around an outer circumference of the thin film.

16. The packaging method of the roll-shaped thin film of claim 15 , wherein the antirust film does not cover both ends of the thin film roll on completion of winding the buffer layer and the antirust film around the outer circumference of the thin film.

17. The packaging method of the roll-shaped thin film of claim 16 , wherein, after winding the buffer layer and the antirust film around the outer circumference of the thin film, further comprising:
obtaining two antirust end films; and
covering both ends of the thin film roll with the antirust end films respectively, wherein each of the antirust end films is detachable from the antirust film.

18. The packaging method of the roll-shaped thin film of claim 10 , wherein, after winding the buffer layer around an outer circumference of the thin film, further comprising:
obtaining two buffer end caps; and
covering both ends of the thin film roll with each of the buffer end caps.

Assignees

• Chang Chun Petrochemical Co Ltd

Inventors

• Yang ming-yu
• Lai Yao-Sheng
• Chou Jui-Chang

Classifications

• B65D65/38

  Packaging materials of special type or form · CPC title

• B65H2701/173

  Metal · CPC title

• B65H18/28 Primary

  Wound package of webs · CPC title

• B65H2701/18442

  Core · CPC title

• B65H2701/1864

  Superposed webs · CPC title