Pouch forming apparatus and method

Patent metadata

Field	Value
Publication number	US-11577447-B2
Application number	US-201816613682-A
Country	US
Kind code	B2
Filing date	Dec 6, 2018
Priority date	Jan 30, 2018
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

To solve the above problem, a pouch forming apparatus according to an embodiment of the present invention includes: a die in which a forming space is recessed inward from a top surface thereof; a partition wall partitioning the forming space into first and second forming spaces; a stripper disposed above the die and configured to descend to contact the die with the pouch film therebetween to fix the pouch film to be seated on a top surface of the die; and an electromagnetic force generation part disposed above the forming space and configured to generate electromagnetic force and configured to apply the electromagnetic force to the forming space.

First claim

The invention claimed is:

1. A pouch forming apparatus comprising:
a die in which a forming space is recessed inward from a top surface thereof;
a partition wall partitioning the forming space into first and second forming spaces;
a stripper disposed above the die and configured to descend to contact the die with the pouch film therebetween to fix the pouch film to be seated on a top surface of the die; and
an electromagnetic force generation part disposed above the forming space and configured to generate an electromagnetic force and configured to apply the electromagnetic force to the forming space, the electromagnetic force generation part configured to apply the electromagnetic force to the first forming space and then move to a location above the second forming space.

2. The pouch forming apparatus of claim 1 , wherein the electromagnetic force generation part is configured to be disposed above the first forming space.

3. The pouch forming apparatus of claim 2 , wherein the electromagnetic force generation part is configured to be disposed above the second forming space.

4. The pouch forming apparatus of claim 1 , wherein the partition wall has a thickness of 0.1 mm to 3 mm.

5. The pouch forming apparatus of claim 4 , wherein the partition wall has a thickness of 1 mm to 2 mm.

6. The pouch forming apparatus of claim 1 , wherein the stripper is configured to contact only a peripheral portion of the die located outside of a periphery of the forming space with the pouch film therebetween to fix the pouch film to be seated on the top surface of the die.

7. The pouch forming apparatus of claim 1 , wherein an upwardly-protruding end of the partition wall has a curved surface.

8. A pouch forming method comprising:
seating a pouch film on a top surface of a die to cover an open end of a forming space that is recessed inward from the top surface of the die and that is partitioned into first and second forming spaces by a partition wall;
descending a stripper from an upper location above and remote from the die to a lower location adjacent to the top surface of the die;
contacting the stripper to the pouch film to seat the pouch film onto the top surface of the die; and
generating an electromagnetic force with an electromagnetic force generation part disposed above the forming space so as to apply the electromagnetic force to the forming space, so that a first cup part and a second cup part are respectively drawn in the pouch film along the first forming space and the second forming space, respectively,
wherein the generating of the electromagnetic force comprises the electromagnetic force generation part applying the electromagnetic force to the first forming space, drawing the first cup part in the pouch film, moving the electromagnetic force generation part to a location above the second forming space, the electromagnetic force generation part applying the electromagnetic force to the second forming space, and drawing the second cup part in the pouch film.

9. The pouch forming method of claim 8 , wherein, during the generating of the electromagnetic force, the electromagnetic force generation part is disposed above the first forming space.

10. The pouch forming method of claim 9 , wherein, during the generating of the electromagnetic force, the electromagnetic force generation part is disposed above the second forming space.

11. The pouch forming method of claim 8 , wherein the partition wall has a thickness of 0.1 mm to 3 mm.

12. The pouch forming method of claim 11 , wherein the partition wall has a thickness of 1 mm to 2 mm.

13. The pouch forming method of claim 8 , wherein, during the contacting of the stripper to the pouch film, the stripper contacts only a peripheral portion of the die located outside of a periphery of the forming space with the pouch film therebetween to fix the pouch film to be seated on the top surface of the die.

Assignees

• Lg Chemical Ltd
• Lg Energy Solution Ltd

Inventors

• Jung Tai Jin
• Choi Hang June
• Park Kun Ha
• Ku Cha Hun
• Pyo Jung Kwan

Classifications

• H01M50/119

  Metals · CPC title

• H01M50/131

  characterised by physical properties, e.g. gas permeability, size or heat resistance · CPC title

• H01M50/121

  Organic material · CPC title

• B32B27/36

  comprising polyesters · CPC title

• B29K2023/12

  PP, i.e. polypropylene · CPC title