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US 2021/0187931 A1Published application
Method for manufacturing packaging sheet
OwnerHo Chil KIMinventor
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Abstract
A method of manufacturing a packaging sheet, the method being capable of not only greatly improving a heat insulation property of the packaging sheet, but also minimizing the volume of cells of the packaging sheet without opening the cells by cutting or needle-punching the cells, thereby facilitating storage and transportation of the packaging sheets while significantly reducing logistics costs.
Claims14
A method of manufacturing a packaging sheet, the method comprising:
- a) perforating each of a plurality of cells of a cell sheet in which the plurality of cells are formed at a regular interval;
- and
- b) partially bonding a finishing sheet onto the plurality of cells of the cell sheet.
A method of manufacturing a packaging sheet, the method comprising:
- a) perforating each of a plurality of cells of each of first and second cell sheets, each of the first and second cell sheets in which the plurality of cells are formed at a regular interval;
- and
- b) partially bonding the first and second cell sheets to each other.
Dependencies are inferred from the claim text.