Title:
PACKAGING BOX HAVING HEAT-RETAINING FUNCTION IMPROVED BY MULTILAYERED STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/145590
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a packaging box wherein constituent layers thereof have a multilayered structure, thereby ensuring excellent heat-retaining characteristics, and the inside of the box is coated with a waterproof material and is closed, thereby improving waterproofing characteristics and heat-retaining characteristics. In order to accomplish the above-mentioned purpose, the present invention provides a packaging box comprising: a pair of outer boxes having respective outer plates folded upwards along boundaries of a quadrangular plate body and having an inner plate folded on an interval-retaining plate, thereby forming left/right plates and front/rear plates in a layered structure so as to have heat-retaining layers, heat-insulating layer plates having thicknesses determined to be contained in the inner width of the interval-retaining plate being coupled to the heat-retaining layers, respectively, a reinforcement plate being stacked/coupled to the quadrangular plate body; and an inner box having respective inner plates folded upwards along peripheries of a stackable quadrangular bottom reinforcement plate of the quadrangular plate body and having a folding plate folded on an interval-retaining plate, thereby forming inner left/right plates and inner front/rear plates to have double the height from the quadrangular plate body of the outer box to the right plate thereof, the inner box being coated with a waterproof material and having a closed structure. The inner box is assembled to one of the outer boxes so as to accommodate a half protruding side plate, and the other outer box is assembled in that state, thereby constituting a single packaging box.
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Inventors:
SONG MIN HWA (KR)
Application Number:
PCT/KR2020/019354
Publication Date:
July 22, 2021
Filing Date:
December 30, 2020
Export Citation:
Assignee:
SONG MIN HWA (KR)
International Classes:
B65D5/02; B65D5/42; B65D5/44
Foreign References:
| KR100947909B1 | 2010-03-22 | |||
| JPH0722920U | 1995-04-25 | |||
| KR101026850B1 | 2011-04-04 | |||
| EP1182146A1 | 2002-02-27 | |||
| JP2002337849A | 2002-11-27 |
Attorney, Agent or Firm:
OH, Seung Keon (KR)
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