KR102397036B1 - A Packing box for cooling packaging - Google Patents

Abstract

The present invention relates to a packaging box for cold packaging, in particular, an eco-friendly packaging box that has a combination structure of a packaging box made of corrugated cardboard and an inner box inserted inside the packaging box and shows a cold insulation effect to be used as a substitute for a Styrofoam box. When the inner box is inserted into an inner space of the packaging box made of corrugated cardboard, in a state in which the packaging box and the inner box are folded into a hexahedron, not only is ventilation blocked but also water resistance and insulation are improved while water leakage caused by condensation is prevented. Therefore, provided is an eco-friendly packaging box for cold packaging, which offers an equivalent or superior effect to Styrofoam for cold insulation.

Description

A packing box for cooling packaging {A Packing box for cooling packaging}

The present invention relates to a packaging box for cold storage packaging, and in particular, a combined structure of a packaging box made of paper-made corrugated cardboard and an inner box inside the packaging box, and the cooling effect can be used as a substitute for the Styrofoam box, so that it is eco-friendly. This is to provide a packaging box.

The packaging box currently used for cold storage is packaged in a Styrofoam box molded with foamed plastic. The disadvantage of this Styrofoam box is that it is not environmentally friendly. appearance is required.

Therefore, recently, many attempts are being made to provide a packaging box that can be kept cold as a substitute for Styrofoam using eco-friendly paper. It is possible, and there is an attempt to use it as a cold storage.

That is, a typical corrugated cardboard structure consists of a surface paper corresponding to the part to be printed, a corrugated core paper having a constant corrugated depth, and a backing paper. Usually, the surface paper or the backing paper is also called an original cardboard.

And the corrugated cardboard is about 5mm for A, about 3mm for B, and about 2mm for E, depending on the depth of the corrugated core. it will be applicable

With this structural feature, in a normal corrugated cardboard box, a corrugated paper with corrugated paper having a constant depth and width is continuously provided between the original cardboard provided on one side and the other side, and the insulation is not only reinforced, but also to some extent by securing an air layer by the corrugated paper. can be made possible.

However, in this case, it is possible to keep warm to some extent with the air layer by the ribs, but in the case of cold storage, the original cardboard or the corrugated core of the corrugated cardboard is damaged due to the occurrence of dew condensation in the contents to be packaged, so that practical cooling is impossible.

Therefore, recently, in order not to be damaged by condensation, vinyl coating (aka lamination) is applied to the original cardboard forming the inner surface of the corrugated cardboard packaging box. As it penetrates into the crevice of the folded part, it leaks and eventually damages the corrugated cardboard, making it impossible to use for actual delivery.

Therefore, recently, in order to make the cooling power of the packaging box using the corrugated cardboard approach the Styrofoam, the corrugated cardboard box is divided so that the inner box is inserted inside the packaging box so that the inner box is in close contact with the packaging box, and in this state By forming a coating with excellent moisture resistance on the inner surface of the packaging box and the inner surface of the inner box, the corrugated cardboard is prevented from being damaged by moisture, and it is possible to keep it cool for a certain period of time.

However, in this way, an aluminum deposition layer is formed on the original cardboard laminated with the corrugated paper to have excellent moisture resistance on the inner surface of the packaging box made of corrugated cardboard, and at the same time, an aluminum deposition layer is formed on the original cardboard constituting the inner box to keep the inner box cool. It is suggested that it is possible to cope with dew condensation generated when packaging these necessary contents, as well as to be able to cope with Styrofoam by securing an air layer by a double structure.

However, the disadvantages of these are: First: the need for separation and collection is generated by the aluminum deposition layer when discarded after use, and there is a problem that such separation is practically impossible, and second: due to a significant increase in processing cost for aluminum deposition There are practically a non-economical problem for single-use use, and third: there is a possibility of ventilation in the assembled structure in the assembled state, so the effect of practical cooling (maintaining about 24 hours after packaging the contents) is that it cannot be replaced.

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Therefore, the present invention not only blocks air permeability in a state in which the packing box and the inner box are folded into a hexahedron when the inner box is inserted into the inner space of a packaging box made of corrugated cardboard, but also has water resistance and thermal insulation properties while eliminating water leakage due to dew condensation It is intended to provide an eco-friendly cold storage packaging box while providing the same or superior cooling effect to that of Styrofoam.

To this end, the present invention is made of corrugated cardboard in which original cardboard is laminated on both sides of corrugated paper, so that the opened upper or lower surface of a hexahedral packaging box with four closed sides is folded, it extends and folds on the same side as the front, rear, left, and right sides of the packaging box body The front, rear, left, and right extension surfaces are divided so as to be folded only inward by a line, and the fold lines of the left and right extension surfaces are divided into left and right folds so that they are folded inward by an inclined fold line extending from the left and right corners to the center, and the fold The side is folded to overlap with the upper layer of the left and right extension surfaces, and the front and rear extension surfaces are sequentially overlapped and folded to the upper layer and adhered with box tape. In the case of being made of a single piece of corrugated cardboard, the front, back, left, and right sides are integrally folded by an upright folding line on the bottom surface, and in the folded state, the four corners are provided with a folding surface by an inner folding line,
In the case where the four sides of the packaging box are blocked, the front, rear, left, and right extension surfaces are cut in the same direction as the inclined folding line starting from the four corner points of the folding line. is provided so that it can be folded only inward by attaching the extended adhesive wings to the folding surface,
The left and right extension surfaces are divided into left and right sides by the inclined folding line, and the tip of the folding surface is cut in a triangle to form a cutout,
The left and right extension surfaces including the folding surface are provided at a lower position than the front and rear extension surfaces,
In the inner box, one side of the folded surface folded by the inner folding line of the corner in a state in which it is erected by the upright folding line is fixed by being adhered to the front and rear surfaces,
One corrugated cardboard constituting the inner box is laminated using cup paper that is harmless to the human body and has excellent density, and forms a food coating layer with a certain thickness on the surface of the cup paper,
In the laminated cup paper, a pressure line is formed so as to be spaced apart at regular intervals in a direction orthogonal to the bones of the corrugated paper forming the corrugated paper, and a partition space in which the bones of the corrugated paper are provided with curved lines on both sides at regular intervals is provided,
The same folded cover is coupled to the inside of the inner box.
In addition, in the present invention, all of the original cardboard laminated up and down the corrugated core of the corrugated cardboard constituting the inner box is composed of cup paper,
For the bone of the cortex, use a bone A corresponding to a waveform of 5 mm, and the interval of the pressure line is 1 cm,
The food coating layer is characterized in that it is made of 10㎛.
In addition, the present invention consists of cup paper all of the original cardboard laminated up and down of the corrugated core constituting the corrugated cardboard of the cover in the inner box,
A food coating layer of 10 μm is also formed on the cup paper of the cover located on the inner surface of the inner box,
In the original cardboard constituting the corrugated cardboard, pressing lines are formed at intervals of 1 cm in a direction orthogonal to the valley of the corrugated paper to form a partition space provided with a curved line in the valley,
In a state in which the corner portion of the inner box is folded in the same way as the fold surface is formed by the inner fold line, and the portion on which the pressure line is formed faces the inner side of the inner box, the side surface of the cover faces the inner wall of the inner box It is made to be covered while closely adhering to improve thermal insulation.
In addition, the folded surface of the packaging box is formed with an inclined line on the upper side, and the inclined line extends downward from the boundary between the front and rear extension surfaces and the left and right extension surfaces to the cutout.
In addition, the folded surface of the packaging box is pressed first to form a thin thickness to prevent gaps, so that a space is not formed when bonding the boundary of the upper side of the front and rear extension surfaces with box tape.

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Therefore, in the state in which meat or fresh vegetables with moisture in the inner box are packaged, moisture present in the packaged contents or due to condensation caused by temperature change is primarily blocked by the cup paper, and the cup paper and the corrugated paper In the laminated state, it is made integral with the floor surface and the four corners are folded by the folds on the upright side, and it is adhesively fixed to the side.

In addition, by providing pressure lines at regular intervals in a direction orthogonal to the ribs of the corrugated wick of the inner box, the ribs of the corrugated wick have a partition space and block the flow of air to a certain extent, thereby further improving thermal insulation properties.

In addition, even when the packaging box is made to be folded so that ventilation does not occur, the upper and lower surfaces that are opened are completely sealed and blocked, so it is possible to keep the same level of cooling as that of Styrofoam, and at the same time, the recyclability according to the use of corrugated cardboard is possible. It can be excellent and at the same time provide eco-friendliness.

1 is an exploded perspective view of the inner box of the present invention.
Figure 2 is an exploded perspective view in which the inner box of the present invention is made of corrugated cardboard.
Figure 3 is an embodiment of a state in which the inner box of the present invention is assembled.
4 and 5 are one embodiment of a state in which the inner box of the present invention is inserted into the inner space of the packaging box made of corrugated cardboard.
Figure 6 is an exploded view of a state in which the cover is integrally provided in the inner box of the present invention.
Figure 7 is an embodiment of the assembled state of Figure 6;
Figure 8 is a state diagram in which the cover is provided separately in the inner box of the present invention.
Figure 9 is an embodiment of the state in which the inner box of Figure 8 is assembled to the packaging box.
Figure 10 is an embodiment of a state in which the pressing line is provided in a state in which the original cardboard of the inner box of the present invention is laminated to the corrugated paper.
Figure 11 is an embodiment of a state in which a dividing line is formed in the bone of the shimji by the pressing line of Figure 10.
Figure 12 is an assembly flow diagram of the opened upper end of the packaging box of the present invention.
13 is a perspective view of an embodiment showing a structure that is folded only on the open top of the packaging box of the present invention.
14 is an embodiment showing a structure in which both the open top and bottom of the packaging box of the present invention are folded;
15 is an embodiment showing another structure in which the upper end of the packaging box of the present invention is folded in a state in which the lower end is folded.
Figure 16 is a perspective view of the assembled state of the packaging box of the present invention.

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

1 to 16, in the configuration of the present invention, the packaging box 100 made of corrugated cardboard manufactured by bonding the original cardboard on both sides of the corrugated paper and the inner wall 103 on the inside of the packaging box 100 is in close contact It consists of an inner box 200 that is inserted as it is.
The packaging box 100 has front and rear left and right extension surfaces 110 extending from the fold line 111 on the left and right sides 104 and front and rear surfaces 105 of the main body on either or both of the opened upper and lower surfaces inward. Only folding is possible, and the front, rear, left and right extension surfaces 110 make it easy to fold only inward when the four sides are blocked, and a gap is created when the four sides are blocked. prevent.
The packaging box 100 having a structure in which four sides are blocked as described above has an inclined fold line 121 in which the adhesive wings 101 forming the body start from the four corner points 111a of the fold line 111, respectively, and The extended adhesive wing 102 is to be adhered to the folding surface 120a in the state that it is cut in the same direction by a predetermined area (b), and the extended adhesive wing 102 is adhered to the inside of the folding surface 120a will be.
In addition, the front and rear left and right extension surfaces 110 include a front and rear extension surface 110a and a left and right extension surface 110b connected to the front and rear extension surfaces in a closed state, and a fold line 111 on the left and right extension surfaces 110b. Each of the folding surfaces 120 is partitioned on the left and right by the inclined folding lines 121 starting from the four corner points 111a of ) while being positioned on the lower side of the front and rear extension surfaces (110a).
In addition, the front and rear extension surfaces 110a have a length such that the upper sides contact each other in a folded state, and in this state, the borders abutting each other are closed with a box tape 400 as shown in FIG. 16 .
In addition, when the left and right extended surfaces 110b are provided at a lower position than the front and rear extended surfaces 110a, certain portions of the extended front and rear surfaces 110a can be overlapped with each other in a folded state.

In the present invention, in consideration of the thickness generated in the structure of the corrugated cardboard, the folding surface partitioned along the inclined fold line 121 in order to facilitate the folding of the folding surface 120 divided to the left and right by the inclined fold line 121 ( The tip of 120) is cut in a triangular shape to provide the cutout 130, so that the left and right extended surfaces 110b are pressed inward by the inclined folding lines 121, and each of the folding surfaces 120 is folded. In this case, due to the thickness of the corrugated cardboard, it is possible to easily fold while preventing the fading of the inclined fold line 121 .

In addition, due to the thickness of the folded surface 120, the folded surface 120 is positioned between the left and right extension surfaces 110b and the front and rear extension surfaces 110a and when folded, the space 130 is formed in the folded state. Even in a state where the box tape 400 is attached, a ventilation gap may be exposed. is formed downward to the portion where is formed, and the inclined line 122 starts from the corners α of the front and rear extension surfaces 110a and the left and right extension surfaces Starting from (c), it is possible to prevent a gap from being generated in a state in which they are folded inward, and at the same time, an inclination line indicates that interference may occur on the upper side of the folded surface 120 in a state in which the left and right extension surfaces 110b are folded. (122) makes it possible to prevent it.

In addition, when the inclined line 122 is adhered with the box tape 400 with a predetermined width to the boundary of the upper side contacting each other of the front and rear extension surfaces 110a in the folded state, only enough to be covered by the width of the box tape 400 In any case, the same effect can be generated.

In addition, when the folded surface 120 is first pressed by a press or the like to form a thinner thickness, the space 130 is not formed in the folded state, so that the gap can be minimized.
In addition, the inner box 200, which is inserted into the inside of the packaging box 100, is made of a single rectangular corrugated cardboard 10 on which the bottom surface 210 and the front and rear left and right side surfaces 220 and 230 can be folded upright. It is provided by the line 11, and when the corrugated cardboard 10 is folded into the bottom surface 210 and the front and rear left and right side surfaces 220 and 230 by the upright folding line 11, the four corners 12 have Left and right folding surfaces 240 are provided by the inner folding lines 241 , and one side 240a of the left and right folding surfaces 240 is attached to and fixed to the front and rear side surfaces 220 .

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In this case, it is possible to respond to a direct load by bonding one side 240a of the folded surface 240 to a portion having a long side width if possible.

In addition, one corrugated cardboard 10 constituting the inner box 200 is made of the original cardboard (backing paper) forming the inner surface of the inner surface of the corrugated core 1, that is, the cup paper 2 that is harmless to the human body and has excellent density. It is used to laminate, and in the laminated state, the food coating layer 3 is formed to a predetermined thickness on the surface of the cup paper 2, so that the waterproofness can be excellent.

In the present invention, when the food coating layer 3 is applied with a thickness of 10 μm, the best waterproof property is checked, and in the present invention, water is filled in the inner box 200 to a height of about 2/3 to check the waterproofness. This is to ensure that there is no leakage even when stored for 7 days in the same condition.

However, when the coating is thinner than this, it is confirmed that a small leak occurs, and when the coating is thicker than this, there is an uneconomical part.

In addition, when the inner box 200 is formed by folding one sheet of corrugated cardboard 10, the cup paper 2 of the one sheet of corrugated cardboard 10 is orthogonal to the trough 1a of the corrugated paper 1 forming the corrugated cardboard at the laminated portion. By forming a pressing line (1b) to be spaced apart at regular intervals in the direction of As the flow property decreases in the partition space 1d by the curved line 1c, the air is present for a certain period of time to strengthen the thermal insulation properties.

In the present invention, the best cold storage when using the A valley whose waveform corresponds to about 5 mm for the corrugation 1a of the corrugated cardboard 10 used as the inner box 200 and the spacing between the pressing lines 1b is 1 cm. effect could be obtained.

The following is a table of results obtained by measuring the Styrofoam box and the product (nine box) of the present invention by time.

According to the above, it can be seen that the temperature change between the Styrofoam (EPS) box and the product (nine box) of the present invention is almost the same.

In addition, since the upper portion of the inner box 200 is in an open state, the edge portion 12 of the inner box 200 is folded over the cover 300 by the upright fold line 11 and the inner fold line 241 . ) is folded in the same way as in the folded form, and the pressing line 1b is formed in a direction perpendicular to the corrugated paper 1a, and it is provided on the outer surface, and then covers it inside the inner box to improve insulation. In this case, the side 301 of the cover 300 in the folded state is in close contact with the inner wall 201 of the inner box 200 to enable airtight maintenance.

Due to this, it can be seen that the temperature change of the product of the present invention and the Styrofoam box is almost the same as the result of comparing the temperature change.

According to the graph, it can be seen that there is almost no temperature difference between the Styrofoam box and the product of the present invention as time passes.

In addition, in a state in which the original paper (back paper) of the corrugated cardboard constituting the cover was laminated with cup paper, a food coating layer was formed with a thickness of 10 μm to further improve waterproofness and hygiene, and even at this time, pressurized in the direction perpendicular to the bone of the corrugated core. Lines are formed at an interval of 1 cm to form a partition space provided with a curved line in the valley to slow the flow of air flowing through the valley and to allow air to exist, so that the insulation effect is excellent.

In addition, the packaging box into which the inner box is inserted also uses double corrugated cardboard when packing a heavy load, while using double corrugated cardboard consisting of A and E ribs, so it has excellent insulation and reinforcement.

At this time, by placing the part where the E bone is formed on the outside, the response to the impact is excellent.

The test conditions with the styrofoam box in the present invention are

① Place frozen ice packs (2 pcs.) in the sample EPS box presented by the client on the floor, attach a thermographer on the middle support of the EPS box, close the lid, and set the surface temperature (inside) at room temperature for 24 hours. Measure the temperature change every minute.

② Place the frozen ice packs (2 pcs.) in the pre-treatment condition on the sample nine box presented by the client, and place the ice pack on the floor, attach a thermometer on the middle support of the nine box, close the lid, and keep the surface temperature (inside) at room temperature for 1 minute for 24 hours. Measure the temperature change at intervals.

- For the result judgment standard, the temperature changed for each measurement time (1 hour) suggested by the client is recorded.

- Test room temperature: room temperature (23.0℃ ~ 25.0℃)

- Pretreatment condition (ice pack): Freeze for 24 hours in a -20.0℃ freezer

- Sample presented by the client: 1 EPS box, 1 Nine box, 4 ice packs (495g)

- EPS box size (outer diameter): 4 000 mm * 2 800 mm * 1 900 mm

- Nine box size (outer diameter): 3 500 mm * 2 750 mm * 2 000 mm

2: Cup paper 3: Food coating layer
10: corrugated cardboard 11: upright fold line 12: corner
100: packing box 101: adhesive wings
102: extended adhesive wings 103: inner wall
104: left and right side 105: front and rear
111: fold line 111a: edge point
200: inner box 201: inner wall
210: bottom
220: front and rear extended scenes
230: left and right extended scene
240: folded side 240a: one side 241: inner fold line
300: cover 301: side

Claims (12)

It is made of corrugated cardboard in which original cardboard is laminated on both sides of the corrugated paper, so that the opened upper or lower surface of the six-sided packaging box 100 with four closed sides is folded, it extends on the same side as the front, rear, left and right sides (104, 105) of the packaging box body The front, rear, left, and right extension surfaces 110 are partitioned to be folded only inward by the fold line 111, and the fold line 111 of the left and right extension surface 110b is an inclined fold line extending from the left and right corners 111a to the center. The folding surface 120 is divided left and right to be folded inward by 121, and the folding surface 120 is folded to overlap the upper layer of the left and right extension surfaces 110b, and the front and rear extension surfaces 110a are sequentially arranged as the upper layer. The inner box 200, which is folded and folded with a box tape 400, is adhered to the inner side of the packaging box 100 while being in close contact with the inner wall 103 of the packaging box. The front, rear, left and right side surfaces 220 and 230 are integrally folded by the upright fold line 11 on the face 210, and in the folded state, the four corner portions 12 have the inner fold line 241. The folded face In which 240 is provided,
The four corner points 111a of the folding line 111 are the adhesive wings 101 formed in a structure in which the four sides of the packaging box body are blocked in the front, rear, left and right extension surfaces 110 in which four sides of the packaging box 100 are blocked. ) in the same direction as the inclined fold line 121 starting from, the extended adhesive wing 102 is adhered to the folding surface 120a in a state in which it is cut in the same direction as the folding surface (120a) so that it can be folded only inwardly,
The left and right extension surfaces 110b are divided into left and right sides by the inclined folding lines 121, and the tip of the folding surfaces 120 is cut into a triangle to form a cutout 130,
The left and right extension surfaces (110b) including the folding surface (120) are provided at a lower position than the front and rear extension surfaces (110a),
In the inner box 200, one side 240a of the folded surface 240 folded by the inner folding line 241 of the corner 12 part in a state in which it is erected by the upright folding line 11 is the front and rear surfaces 230 ) is attached and fixed to
One corrugated cardboard constituting the inner box 200 is laminated using a cup paper 2 that is harmless to the human body and has excellent density, and the surface of the cup paper 2 Forming a food coating layer (3) to a certain thickness,
In the laminated cup paper (2), a pressure line (1b) is formed so as to be spaced apart at regular intervals in a direction orthogonal to the bones of the corrugated paper forming the corrugated paper, so that the bones of the corrugated paper are provided with curved lines (1c) on both sides at regular intervals. A partition space (1d) is provided,
A packaging box for cold packaging, characterized in that the cover 300, which is folded in the same way, is coupled to the inside of the inner box 200. delete delete The method of claim 1 .
All of the original cardboard laminated up and down of the corrugated core of the corrugated cardboard constituting the inner box 200 is made of cup paper (2),
The corrugation of the cortex uses a corrugation A corresponding to 5 mm, and the spacing of the pressing line 1b is 1 cm,
The food coating layer (3) is a packaging box for cold storage, characterized in that made of 10㎛. 5. The method of claim 1 or 4,
In the portion where the upper part of the inner box 200 is opened, the original cardboard that is laminated above and below the corrugated core constituting the corrugated cardboard for the cover 300 is all made of cup paper (2),
A food coating layer (3) of 10 µm is also formed on the cup paper of the cover (300) located on the inner surface of the inner box (200),
In the original cardboard constituting the corrugated cardboard, pressing lines (1b) are formed at intervals of 1 cm in a direction orthogonal to the valleys of the corrugated paper to form a partition space (1d) provided with a curved line (1c) in the valleys,
In a state in which the corner portion 12 of the inner box 200 is folded in the same way as the fold surface is formed by the inner fold line 241, the portion where the pressing line 1b is formed is the inner box 200. A packaging box for cold storage in which the side of the cover 300 is in close contact with the inner wall of the inner box in a state facing inward to improve thermal insulation. delete delete delete According to claim 1,
The folding surface 120 of the packaging box is formed by an upper side inclined line 122, and the inclined line 122 starts from the boundary (c) between the front and rear extension surfaces 110a and the left and right extension surfaces and extends downward to the cutout. Packaging box for cold storage packaging. delete 10. The method of claim 9,
Insulated packaging in which the space 130 is not formed when the upper edge of the front and rear extension surfaces are adhered with box tape to prevent gaps by forming a thin thickness by first pressing the folded surface 120 packaging box for delete

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