WO2021145590A1

WO2021145590A1 - Packaging box having heat-retaining function improved by multilayered structure

Info

Publication number: WO2021145590A1
Application number: PCT/KR2020/019354
Authority: WO
Inventors: 송민화
Original assignee: 송민화
Priority date: 2020-01-14
Filing date: 2020-12-30
Publication date: 2021-07-22
Also published as: KR20210091590A

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.

Description

Packing box with improved thermal insulation function by multi-layer structure

The present invention relates to a packaging box composed of a prefabricated type of paper material such as corrugated cardboard. In particular, the packaging box has a multi-layer structure, which has excellent thermal insulation, and a waterproof treatment on the airtight structure of the inner box and the corrugated cardboard surface constituting the inner and outer boxes. It relates to a packaging box that can improve waterproof properties.

In general, a packaging box is used for the purpose of packaging an object to be packaged, such as a product, and delivering it to a purchaser in a state in which damage or damage is prevented.

These packaging boxes are largely made of paper materials and foamed resin materials called Styrofoam.

The former packaging box made of paper material is manufactured using corrugated cardboard with a certain thickness, but as a single-layer structure, the thermal insulation is poor, and there is a limitation in use due to the disadvantages of being vulnerable to shock and moisture.

In the latter case, the foamed resin packaging box has the advantage of being safe from external shock and moisture to the object to be packaged, and providing thermal insulation and cooling properties, but its use is limited due to environmental pollution caused by recent disposal.

Thus, in order to provide safe protection against external impact on the object to be packaged and to increase the thermal insulation, a multi-layered packaging box has been proposed as a number of techniques in the prior art.

As an example, a packaging box having a purifying and warming function was disclosed in Korean Utility Model Registration No. 20-0370371 (hereinafter referred to as Patent Document 1).

In Patent Document 1 above, the inner bottom of the packaging box and the packaging bottom is combined with a thermal insulation top plate and a thermal insulation bottom plate made of foamed resin material, and the packaging box is assembled with a purification insulation box fitted with a cushioning sealing plate made of foamed resin material on four sides of the packaging box. It has one structure.

In Patent Document 1, the thermal insulation of the foamed resin material can be ensured by the thermal insulation upper plate, the thermal insulation insulation lower plate, and the buffer sealing plate. However, by using the thermal insulation insulation plate of the foam resin material, the inconvenient of separate collection and environmental pollution during the disposal process There is a problem that has recently come to limit the use of synthetic resin materials, which has a disadvantage of poor practicality.

In addition, in the Republic of Korea Utility Model Registration No. 20-0391637 (hereinafter referred to as Patent Document 2), an inner box and an outer box are integrally assembled using a single unfolded cardboard of paper material, and a certain space between the inner and outer boxes A double packaging box having a buffer space in which damage to the packaged goods accommodated in the inner box is prevented by the buffer space of the has been disclosed.

This patent document 2 has the advantage of being able to solve the environmental pollution problem and be recyclable as it is manufactured with a single paper material, but the folding structure is configured to form a buffer space through multiple steps, so the folding complexity and folding according to the assembly of one packaging box It had the disadvantage of lowering productivity.

The technical problem to be achieved by the present invention is that the side plate and the plate body have a multi-layer structure and a waterproof coating on the inner surface of a pair of outer boxes, one lower outer box or upper and lower outer boxes, the inner surface is treated with waterproof coating and the inside of the closed structure By assembling the box, it is composed of a single packaging box to increase heat retention, and has waterproofness by an inner box with a waterproof coated surface and airtight structure, and one of the two packaging boxes is the lower outer box or the upper and lower outer boxes. It is to provide a packaging box with an improved thermal insulation function by a multi-layer structure that further enhances the thermal insulation by increasing the thermal insulation layer by each inner box assembled in the interior.

In order to solve the above problems,

Each outer plate folded upward along the edge of the square plate body is bent to the gap maintaining plate, so that the left and right plates and front and rear plates having a thermal insulation layer are formed in a layered structure on the inner surface, and the inner surface is treated with waterproof coating, A pair of outer boxes in which a heat insulating layer plate having a thickness accommodated in the inner width of the gap maintaining plate is coupled to each of the insulating layers, and a reinforcing plate is laminated to the rectangular plate body; in general, a packaging box is a package to be packaged, such as a product. It is used for the purpose of packaging and delivering to the buyer in a state where damage or damage is prevented.

As an example, as Patent Document 1, a packaging box having a purifying and warming function has been disclosed.

In addition, Patent Document 2 discloses that the inner box and the outer box are integrally assembled using a single unfolded cardboard of paper material, and the damage of the packaged goods accommodated in the inner box by the buffer space of a certain space between the inner and outer boxes A double packaging box having a buffer space to be prevented has been disclosed.

Each inner plate folded upward along the edge of the square bottom reinforcing plate that can be stacked of the square plate body is left and right inside the inner left and right plates and the inner front and rear plates in which the folding plates are bent to the spacing plate body of the outer box left and right in the square plate body of the outer box In a state formed to twice the height of the plate and the front and rear plates, the inner surface of the outer box assembled to the lower outer box is treated with waterproof coating and the inner box has a closed structure; be composed of

In a state of accommodating the protruding side plate of 1/2 of the inner box assembled with the lower outer box, the gap maintaining plate of the upper outer box is closely assembled to the upper surface of the gap maintaining plate of the lower outer box to form a single packaging box characterized in that it is composed of

In addition, in the present invention, each outer plate folded upward along the edge of the square plate body is bent to the gap maintaining plate, so that the left and right plates and front and rear plates having an insulating layer are formed in a layered structure on the inner surface, and the inner surface is A pair of outer boxes which are treated with a waterproof coating, a heat insulating layer plate having a thickness accommodated in the inner width of the gap maintaining plate to each of the insulating layers, and a reinforcing plate laminated to the square plate body;

Each inner plate folded upward along the edge of the square bottom reinforcing plate that can be stacked of the square plate body is left and right inside the inner left and right plates and the inner front and rear plates in which the folding plates are bent to the spacing plate body of the outer box left and right in the square plate body of the outer box The inner surface assembled to the lower outer box of the outer box is waterproof coated, and the inner surface assembled to the inner box of the closed structure and the upper outer box is waterproof coated in a state that is twice the height of the plate and the front and rear plates. another inner box sized to receive the inner plate height of the upper outer box and the side plate of the inner box as a closed structure; is composed of

In a state in which the protruding side plate of 1/2 of the inner box assembled with the lower outer box is accommodated by the other inner box, the gap maintaining plate of the upper outer box is assembled in close contact with the upper surface of the gap maintaining plate of the lower outer box It is characterized in that it constitutes a single packaging box.

Here, the inner plates of the left and right plates are formed to be longer than the lengths of the inner plates of the front and rear plates, and the fixing pieces are extended so as to be bendable by forming fitting holes at both ends of each, and the inner plates of the front and rear plates. Fitting projections coupled to the fitting holes protrude from both ends, and in a state in which the heat insulation layer plate is disposed inside the outer plate, each of the fixing pieces is bent 90 degrees to the inside of the outer plate of the front and rear plates. In this state, the left and right plates are vertically fixed by fitting the coupling cutout grooves formed opposite to each other, and in a state in which the heat insulation layer plate is disposed inside the outer plate of the front and rear plate, the inner plate is the mutually coupled In a state in which the fixing piece is wrapped, the fitting projections on both sides are vertically erected in engagement with the fitting holes of the fixing piece to constitute the outer box as a housing shape.

In addition, both ends of the inner left and right plates of the inner box and each inner plate of the inner front and rear plates are connected by an overlapping folding plate formed by a cut line and an oblique fold line, by the cut line and the oblique fold line. It is connected to the outer side of each of the inner plates in a folded state so that the corners of the space formed by each of the four inner plates are closed in a state in which the inner left and right plates and the inner front and rear plates stand vertically. It is characterized by

According to the present invention, a single packaging box is constituted by a simple assembly of an outer box having a multi-layer structure of side plates and a plate body and an inner box treated with waterproof coating to increase heat retention as a paper material corrugated cardboard, and an outer box with a waterproof coating on the inner side The reliability of the packaging box is guaranteed by providing waterproofness by the inner box with a closed structure and waterproof coating on the inner side.

In addition, according to the present invention, the constituent members are provided by assembly by simple folding, and heat insulation is provided as a multi-layer structure of a plurality of corrugated cardboards and an air layer between them along with industrial mass production, so that heat insulation is provided without the use of Styrofoam as in the prior art. The provision of environmentally friendly products that can enhance the

1 is a perspective view showing a packaging box according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along line IV-IV of FIG. 1 .

Figure 3 is a perspective view of a state in which the upper outer box of the present invention is removed.

Figure 4 is an exploded perspective view in which the upper and lower outer boxes and inner boxes of the present invention are separated.

5 is an exploded perspective view of the outer box constituting the present invention.

6 to 16 are perspective views of an assembling state showing step by step the assembly process of the outer box of the present invention.

17 is an exploded perspective view of the inner box constituting the present invention.

Figures 18 to 22 are perspective views of the step-by-step assembly state showing the assembly steps of the inner box of the present invention.

23 is a perspective photograph of an actual product according to the present invention.

24 is an exploded perspective view of an embodiment according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, the structure and size of the components shown in the drawings may be simplified or simplified as long as there is no problem in the description of the invention.

1 is a perspective view showing a packaging box according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view taken along line IV-IV of FIG. 1, and FIG. 3 is a perspective view of the upper outer box of the present invention separated. , Figure 4 is an exploded perspective view in which the upper and lower outer boxes and inner boxes of the present invention are separated, and Figure 5 is an exploded perspective view of the outer box constituting the present invention.

Referring to these drawings, the present invention is made of corrugated cardboard of a paper material, has left and right plates 120 and front and

rear plates

130 and 130 folded upward along the edge of a rectangular plate body 110, and has an inner surface It is composed of a pair of waterproof coating-treated

outer boxes

100 and 100 and an outer box 100 assembled to one of them, the inner surface of which is waterproof coated, and a closed structure to increase the waterproof function and thermal insulation properties.

The outer box 100 is a pair of identical structures, and each

outer plate

121 and 131 folded upward along the edge of the square plate body 110 is bent to the

spacing plate

122 and 132, and the

inner plates

123 and 133 are bent to form an insulating layer. The left and

right plates

120 and 120 and the front and

rear plates

130 and 130 having (A) are formed in a layered structure, and the thickness accommodated in the inner width of the

spacing plates

122 and 132 in each of the insulating layers (A). It is configured by combining the heat insulation layer plate 150 having a laminated-bonded reinforcing plate 160 to the square plate body 110 .

Here, when the heat insulating layer to which the heat insulating layer plate 150 is coupled is combined with the thickness of the heat insulating layer board 150 as a thin plate, by forming thick air layers on both sides, the heat insulating effect by the air layer can also be achieved.

In addition, both ends of each of the

outer plates

121 and 131 of the left and

right plates

120 and 120 and the front and

rear plates

130 and 130 are equally divided plates 140 that are folded inward by an oblique fold line 141. It is connected in a folded state on the inside of each of the four

outer plates

121, 121, 131 and 131 in a state in which the left and

right plates

120 and 120 and the front and

rear plates

130 and 130 stand up vertically. It takes the shape of the hull as it is.

The insulating layer plate 150 and the reinforcing plate 160 are made of paper and are provided as corrugated cardboard having a three-layer structure of

corrugated layers

152 and 162 forming an air layer between the surface layers 151, 153, 161, 163 on both sides.

The inner plates 123 of the left and

right plates

120 and 120 are formed longer than the length of the inner plates 133 of the front and

rear plates

130 and 130, and are bent by forming fitting holes 125 at both ends of each. Possibly, the fixing piece 124 is extended, and a fitting protrusion 134 coupled to the fitting hole 125 protrudes from both ends of the inner plate 133 of the front and

rear plates

130 and 130 .

6 to 9, in the present invention, each of the fixing pieces 124 in a state in which the heat insulating layer plate 150 is disposed inside the outer plate 121 of the left and

right plates

120 and 120. In a state bent at 90 degrees to the inside of the outer plate 131 of the front and rear plates 130, the coupling cut-out grooves 126 formed in opposite directions are fitted, and the left and

right plates

120 and 120 are vertically erected and fixed. ,

As shown in FIGS. 10 to 14 , in a state in which the heat insulation layer plate 150 is disposed inside the outer plate 131 of the front and rear plates 130 , the inner plate 133 is fixed to each other. The fitting protrusions 134 on both sides of the

pieces

124 and 124 are wrapped vertically by coupling to the fitting holes 125 of the fixing piece 124, and the pair of

outer boxes

100 and 100 in the shape of an enclosure are mounted. make up

Of course, it is natural that these

outer boxes

100 and 100 are provided with a waterproof coating on the inside in consideration of waterproofness.

And, as shown in FIGS. 15 and 16, the inner plate 133 of the front and

rear plates

130 and 130 has a fitting groove 135 recessed in the central portion, and the reinforcing plate 160 protrudes at the central portion of the front and rear ends. By closely binding the

fitting projections

161 and 161 to the square plate body 110 , it is possible to reinforce the insulation properties of the upper ceiling surface as the bottom or lid of the outer box 100 .

On the other hand, the folding structure of the inner box 200 is shown in FIGS. 17 and 18 to 22 .

As described above, the inner box 200 is assembled as a state in which both the inside and the outside are treated separately in order to provide a combination of a pair of

outer boxes

100 and 100 and an internal waterproofing function.

That is, each

inner plate

221, 231 folded upward along the edge of the square bottom reinforcing plate 210 of the square plate body 110 of the outer box 100 is spaced

plate

222, 232. The inner left and

right plates

220 and 220 and the inner front and

rear plates

230 and 230 in which the

folding plates

223 and 233 are bent are the left and right plates 120 in the square plate body 110 of the outer box 100. And it is formed to be twice the height of the front and rear side plates 130 and assembled to one of the outer boxes (100).

Therefore, as shown in FIG. 23, the upper outer box 200 is assembled in a state that accommodates the protruding side plate of 1/2 of the inner box 200 assembled with the lower outer box 100, and the lid A single packaging box with a function can be configured.

This assembling is specifically in a state of accommodating the protruding side plate of 1/2 of the inner box 200 assembled to the lower outer box 100, and the

gap maintaining plates

122 and 132 of the upper outer box 100 are It is closely assembled to the upper surface of the spacing plate (122, 132) of the lower outer box 100 can provide airtightness and heat retention.

Of course, both ends of the inner left and

right plates

220 and 220 of the inner box 200 and the

inner plates

221 and 231 of the inner front and

rear plates

230 and 230 of the inner box 200 are cut lines 242 and diagonal fold lines. It is connected to the overlapping folding plate 240 formed of 242, and is connected to the outside of each of the

inner plates

221 and 231 by the cut-off line 241 and the diagonal folding line 242 in a state of being overlapped and folded on the outside of each of the

inner plates

221 and 231. In a state in which the inner left and

right plates

220 and 220 and the inner front and

rear plates

230 and 230 stand vertically, the corners of the space formed by each of the four

inner plates

221, 221 and 231,231 are closed and inside The space takes on the shape of an enclosure.

On the other hand, as shown in Figure 24, the inner box 200 is accommodated inside the upper outer box 100 and the side wall height of the upper outer box 100 and the inner side of the lower outer box 100 It is provided as another inner box 200 of a size accommodating the side plate of the inner box 200 accommodated in the inner box 200 can be coupled to the upper outer box (100).

In this embodiment, the gap of the upper outer box 100 in a state in which the other inner box 200 accommodates the protruding side plate of 1/2 of the inner box 200 assembled to the lower outer box 100. The retaining

plates

122 and 132 are assembled in close contact with the upper surface of the

spacing retaining plates

122 and 132 of the lower outer box to provide the multi-layer structure of the upper outer box 100 as the multi-layer structure of the lower outer box 100. This can provide maximum warmth.

This inner box 200 has a waterproof coating and a closed structure on the inner surface, and a close-fitting structure with no gaps with the upper outer box on which the inner surface is waterproofed and provides a waterproof and airtight maintenance function, thereby providing a warming function. can be raised further.

Of course, the waterproof treatment applied here will be fully understood by those skilled in the art even if the description is omitted since it is a conventional technique (e.g., eco-friendly water-soluble waterproof coating, biodegradable film coating, etc.).

As described above, the packaging box according to the present invention forms the outer box 100 positioned at the lower part of the pair of outer boxes 100 positioned at the upper and lower parts in two to three times the size and is accommodated therein at the same time as described above. It can be applied as a packaging box that can widen the packaging space by applying the inner box 200 to its size.

As such, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims and equivalents as well as the claims to be described later.

Claims

Each outer plate folded upward along the edge of the square plate body is bent to the spacing plate to form the left and right plates and the front and rear plates having a thermal insulation layer in a layered structure, the inner surface is treated with a waterproof coating and the respective thermal insulation a pair of outer boxes in which a heat insulating layer plate having a thickness accommodated in the inner width of the spacing plate is coupled to the layer, and a reinforcing plate is laminated to the square plate body;

Each inner plate folded upward along the edge of the square bottom reinforcing plate that can be stacked of the square plate body is left and right inside the inner left and right plates and the inner front and rear plates in which the folding plates are bent to the spacing plate body of the outer box left and right an inner box of a closed structure, the inner surface of which is assembled in one of the outer boxes in a state formed at twice the height of the plate and the front and rear plates; be composed of

Insulation by a multi-layer structure, characterized in that the protruding side plate of 1/2 of the assembled inner box of the one outer box is closely assembled to the upper surface of the side plate from which the other outer box protrudes to constitute a single packaging box Packaging box with enhanced functionality.
Each outer plate folded upward along the edge of the square plate body is bent to the gap maintaining plate, so that the left and right plates and front and rear plates having a thermal insulation layer are formed in a layered structure on the inner surface, and the inner surface is treated with waterproof coating, a pair of outer boxes in which a heat insulating layer plate having a thickness accommodated in the inner width of the spacing plate is coupled to each of the insulating layers, and a reinforcing plate is laminated to the square plate body;

Each inner plate folded upward along the edge of the square bottom reinforcing plate that can be stacked of the square plate body is left and right inside the inner left and right plates and the inner front and rear plates in which the folding plates are bent to the spacing plate body of the outer box left and right in the square plate body of the outer box The inner surface assembled to the lower outer box of the outer box is waterproof coated, and the inner surface assembled to the inner box of the closed structure and the upper outer box is waterproof coated in a state that is twice the height of the plate and the front and rear plates. another inner box sized to receive the inner plate height of the upper outer box and the side plate of the inner box as a closed structure; is composed of

In a state in which the protruding side plate of 1/2 of the inner box assembled with the lower outer box is accommodated by the other inner box, the gap maintaining plate of the upper outer box is assembled in close contact with the upper surface of the gap maintaining plate of the lower outer box A packaging box with an improved thermal insulation function by a multi-layer structure, characterized in that it constitutes a single packaging box.
3. The method of claim 1 or 2,

Both end portions of each outer plate of the left and right plates and the front and rear plates are connected in a folded state inside the outer plate, so that the equal-divided folding plates that are folded inward by an oblique fold line are connected to the left and right plates and the front and rear plates In this vertically standing state, the packaging box with an improved thermal insulation function by a multi-layer structure, characterized in that the corners of the space formed by each of the four outer plates are closed.
3. The method of claim 1 or 2,

The insulation layer plate and the reinforcing plate are made of corrugated cardboard having a three-layer structure of corrugated layers forming an air layer between the surface layers on both sides.
3. The method of claim 1 or 2,

The inner plates of the left and right plates are formed to be longer than the length of the inner plates of the front and rear plates, and the fixing pieces are extended to be bendable by forming fitting holes at both ends of each, and both sides of the inner plates of the front and rear plates. Fitting projections coupled to the fitting holes protrude from the ends, and in a state in which the heat insulation layer plates are disposed inside the outer plates of the front and rear plates, each of the fixing pieces moves to the inside of the outer plates of the front and rear plates. In a state bent at 90 degrees, the left and right plates are vertically fixed by fitting the oppositely formed coupling incision grooves, and in a state in which the heat insulation layer plate is disposed inside the outer plate of the front and rear plates, the inner plate is In a state in which the mutually coupled fixing pieces are wrapped, the fitting protrusions on both sides are vertically erected by being coupled to the fitting holes of the fixing pieces to constitute the outer box in the shape of an enclosure. box.
3. The method of claim 1 or 2,

The reinforcing plate is a multi-layer structure, characterized in that the fitting protrusion protruding from the central portion of the front and rear ends is coupled to the square plate body in a state where the inner plates of the front and rear plates are coupled to the fitting groove recessed in the central portion. Packaging box with improved thermal insulation function.
3. The method of claim 1 or 2,

Both ends of the inner left and right plates of the inner box and each inner plate of the inner front and rear plates are connected by overlapping folding plates formed by cut lines and diagonal fold lines, and each It is connected to the outer side of the inner plate in a folded state so that the corners of the space formed by each of the four inner plates are closed in a state in which the inner left and right plates and the inner front and rear plates stand vertically. Packing box with enhanced thermal insulation function due to its multi-layer structure.