KR20210153818A - A cold packing box - Google Patents

Abstract

The present invention is to provide a paper packaging box that can reserve cold by using corrugated cardboard, Although the paper packaging box is made of paper, the present invention is intended to realize the cold reserve effect that is almost the same as that of Styrofoam. The paper packaging box includes an outer box (10); an inner box (20); and a bag (30), wherein the double-sided corrugated cardboard is doubly used for the outer box, and the double-sided corrugated cardboard is used for the inner box.

Description

Cold packing box {A cold packing box}

The present invention is to provide a paper packaging box that can be kept cold by utilizing corrugated cardboard, and is intended to realize the cooling effect of almost the same degree as that of Styrofoam while being made of paper.

Currently, the cooling effect of the packaging box using Styrofoam starts at 27°C immediately after packaging and gradually decreases over time, dropping to 12.2°C after approximately 35 minutes, and about 12.4°C even after 10 hours have elapsed. After 15 hours, the temperature will be maintained at about 13.7℃.

Therefore, since Styrofoam can maintain a constant temperature with little change in temperature, Styrofoam has been used for packaging for cold storage.

The advantage of Styrofoam is that it has little air permeability and is strong against moisture, and because it is low in weight, it not only prevents unnecessary increase in logistics costs, but also it is inexpensive, so it was impossible to find a packaging box that could replace Styrofoam so far.

However, as such Styrofoam is not environmentally friendly, the use of Styrofoam is restricted around the world, and the development of environmentally friendly packaging boxes has recently been required.

Therefore, it was recently attempted to provide a packaging box that is made of paper and has an excellent thermal insulation effect due to the presence of an air layer, and uses corrugated cardboard which has excellent bearing capacity even under direct load caused by the corrugated paper.

However, the structure of the corrugated cardboard is a structure in which corrugated paper is laminated between the original cardboard, and these original cardboard and the corrugated core are all manufactured using old paper made of recycled pulp with a certain thickness, which has the disadvantage of being vulnerable to moisture. The disadvantage that the effect cannot be expected exists, so it is used only as a concept of packaging.

Therefore, in order to block moisture resistance and air permeability on the original cardboard, a plastic film or silver foil was laminated to block air permeability as well as to have the same moisture resistance. In addition, the use of adhesive and lamination by heat and pressure are required, but heat transfer is impossible due to the thickness of the original cardboard constituting the corrugated cardboard, and even when pressed, there is a problem that close lamination is difficult due to the thickness.

Therefore, plastic is coated on the original cardboard composing the corrugated cardboard by the T-Die method.

Therefore, recently, aluminum is coated on the raw cardboard by a deposition method to block moisture resistance as well as breathability. And, there is another problem that the cost increases when aluminum is deposited on an actual original board.

In addition, there is a problem that the contents accommodated in the inner space cannot be kept cold even in a state in which the original cardboard of the corrugated cardboard has air permeability blocking and moisture resistance as described above.

Therefore, by allowing the inner box to enter the outer box made of corrugated cardboard so that the inner surface of the outer box and the outer surface of the inner box can be in close contact with each other, the cooling effect was improved by thickening the air layer by the double corrugated paper. The same cooling effect cannot be obtained.

Therefore, the present invention is to provide a corrugated cardboard packaging box that can maintain the cooling effect of about the same degree as that of Styrofoam using only such corrugated cardboard.

To this end, an outer box made of corrugated cardboard and an inner box made of corrugated cardboard are formed to be spaced apart by a certain distance, and air permeability is blocked in the inner space of the inner box, and contents for cooling are stored using a bag with excellent moisture resistance and then opened It is designed to realize the same cooling effect as styrofoam by sealing the top.

At this time, the outer box is made of double-sided corrugated cardboard, the inner box is made of double-sided corrugated cardboard, and a bottom plate made of at least double-sided corrugated cardboard is placed on the bottom surface of the outer box for the inner box and the outer box to secure a certain space. and then a first border strip of a certain width is provided on the edge of the bottom plate, and the first border strip has an opening in the center in which the inner box can be seated, and the opening has a bottom surface and a bottom surface of the inner box. After fixing the lower end to a certain depth, the cover plate that can block the open upper end of the inner box has the same structure as the bottom plate to cover the open upper end of the inner box, and in the inner space of the inner box After packing the contents for cooling in a bag that can resist moisture and block air permeability, the open top of the bag is sealed. After making it inside, it was sealed with the cover of the outer box.

In addition, for the bag to be eco-friendly, a water-soluble coating layer capable of moisture resistance is implemented on glassine paper that has been pressed to the extent that the paper straw can block air permeability. After opening the top, the contents are packaged and then sealed simply with heat.

In addition, an air layer is provided on the bottom plate and the cover plate to provide excellent cooling effect, and when packing the inner box, even when the outer box and the outer box are not easily packed due to a slight gap in the packing, the cushioning force by pressurization works. It made it easy to pack the box into an outer box.

In addition, natural lacquer or paint is coated on the outer surface of the original cardboard of the outer box or inner box to provide excellent moisture resistance as well as breathability barrier properties.

Therefore, it is possible to improve the bearing capacity of direct load by the double-sided corrugated cardboard of the outer box, as well as increase the shear force due to the difference between the ribs of the double-sided double-sided corrugated core, as well as improve the preservation of the air layer, so that the cooling can be excellent. In the bottom surface of the outer box, the bottom plate and the cover plate made of more than two sides of corrugated cardboard, as well as the first and second border strips having a spaced surface and an opening of a certain width made of double-sided corrugated cardboard or more on the edge of the bottom plate ingot cover plate The box is fixed inside the opening so that it always maintains its fixed position and the separation width of the edge surface with the outer box, thereby securing more and more air layers, and blocking the air permeability stored in the inner space of the inner box. After packing the contents requiring cooling in the inner space of the bag with excellent moisture resistance, the opened top of the bag is sealed, so that the cooling effect almost identical to that of Styrofoam can be expected.

In addition, the original cardboard constituting the corrugated cardboard of the outer box and the inner box is provided with a water-soluble coating layer capable of blocking air permeability as well as moisture resistance, so that it is possible to obtain a cooling effect more than styrofoam.

In addition, the bottom plate and the cover plate are secured with support and an air layer, and even when the inner box is formed higher than the outer box by this air layer, elastic force is generated so that the inner box can be packed into the outer box by pressurization. there will be

1 is an embodiment in which the inner box of the present invention is coupled to the bottom plate and the cover plate to be inserted into the outer box.
Figure 2 is an embodiment of the state in which the bag is inserted into the inner box of the present invention.
Figure 3 is another embodiment of the bottom plate and the cover plate of the present invention.
Figure 4 and Figure 4a is another embodiment of the bag to be enclosed in the inner box of the present invention
5 is an embodiment in which the support plate and the cover plate are combined in a state in which the cover is provided in the inner box of the present invention.
6 is a cross-sectional view of a coupled state showing a state in which an air layer and an elastic force are applied to a support plate or a cover plate of the present invention.
Figure 7 is another embodiment for a picture of the adhesion between the cover plate and the bottom plate of the present invention.
Figure 8 is an embodiment showing the inner box of the present invention is inserted into the outer box fixed and spaced state by the cover plate and the bottom plate.
Figures 9 and 9a is an embodiment when the corrugated cardboard is inserted into the air layer provided in the bottom plate and the cover plate of the present invention to package the contents with a large load
Figure 10 is an embodiment of the state in which the blocking of air permeability and moisture resistance are improved in the original cardboard of the double-sided corrugated cardboard of the present invention.
11 and 11 are another embodiment of the inner box of the present invention
12 and 12A show one embodiment of a cover of the present invention;
13 is a chart of the temperature change in the cold storage state of the present invention;

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

1 to 10, the configuration of the present invention includes an outer box 10 provided with a cover 11 made of at least double-sided corrugated cardboard; The inner box 20, which has an upper portion made of a minimum double-sided corrugated cardboard, is formed inside the outer box 10 to be spaced apart from each other by a predetermined distance to be fixed inside, and the inside of the inner box 20 After packaging the contents for cold storage using a bag 30 with moisture resistance and breathability blocked, the opened upper end of the bag 30 is sealed by thermal bonding to enter the inner box 20, and , At the upper end and lower end of the inner box 20, a support plate 40 and a cover plate 50 made of a minimum double-sided corrugated cardboard are provided, and the edge of the support plate 40 and the cover plate 50 is spaced apart having a certain width. Surfaces 41 and 51 are provided, and a support plate and a cover plate having openings 42 and 52 in the center thereof are coupled to the bottom surface of the inner box 20 and the opened upper part, and then the inner box 20 The inner box 20 by ensuring a sufficient air layer by ensuring the space 1 on the upper surface as well as the bottom surface 22 and the side 23 of the inner box 20 by entering the outer box (10) The contents that need to be kept cold packaged in the bag 30 of the styrofoam are made to achieve the same cool effect as that of Styrofoam.

At this time, the outer box 10 should be used as double-sided corrugated cardboard or more if possible. A small one is placed on the outer surface of the outer box 10 to prevent damage to the outer box when a shear force occurs from the outside.

In addition, the inner box 20 uses a minimum double-sided corrugated cardboard, and the cover plate 50 and the bottom plate 40 that cover the bottom surface and the open top of the inner box 20 are used with more than a minimum double-sided corrugated cardboard, The bottom plate is in close contact with the bottom surface of the outer box, and the cover plate is in close contact with the cover of the outer box to prevent the flow of the inner box.

In the present invention, when double-sided corrugated cardboard is used for the inner box 20, the bottom plate 40 and the cover plate 50, it can be confirmed that there is a better cooling effect than using the double-sided corrugated cardboard, and the double-sided corrugated cardboard The same as the outer box, the rib cage uses a wide and narrow rib, so it has excellent support and shear strength as well as a cooling effect.

However, it can be seen that the desired degree of cooling effect is maintained for a certain period of time even when the inner box, support plate and cover plate are made of double-sided corrugated cardboard. If this is required, double-sided corrugated cardboard or triple-sided corrugated cardboard can be used.

In addition, the inner box 20 is inserted so that the outer box 10 and the four sides are uniformly spaced apart from the outer box 10 so that the space 1 is secured and the space 1 is secured in the outer box 10 even during transportation ( 20) After placing the bottom plate 40 made of a minimum double-sided corrugated cardboard on the bottom surface 11 of the outer box 10 to closely overlap to prevent the flow, the edge of the bottom plate 40 has a constant A first border strip 43 having a width spaced surface 41 and an opening 42 in the center is formed so that an inner mouth is provided in the center of the bottom plate 40, so that the inner box is provided in the inner box. As the bottom surface of (20) is inserted to a certain depth, the lower end of the inner box is positioned to prevent flow.

In addition, in the inner space of the inner box 20 positioned as described above, the contents requiring cooling are packaged in a bag 30 that can resist moisture and block air permeability, and then close the opened top of the bag 30 . it was sealed.

Thereafter, the cover plate 50 capable of covering the opened upper end of the inner box 20 and the edge of the cover plate 50 are provided with a spaced surface 51 with a predetermined width, and an opening 52 is provided in the center. After attaching and fixing the second frame 53 to the cover plate 50, the opened upper end of the inner box 20 is inserted to a certain depth in the inner mouth, and the opened upper end of the inner box is removed. By blocking it, it will be kept confidential.

After that, the packaging is completed by covering the cover 12 of the outer box 10, and at this time, depending on the shape of the packaging box of the outer box 10 divided into A, B, and C types, it is located at the boundary between the cover and the outer box. Taping to keep confidentiality.

In this case, when the opened upper end of the inner box 20 is first covered with the cover 21 of the inner box and then covered with the cover plate 50, a better cooling effect can be expected.

In addition, when the first and second border strips 43 and 53 provided in the bottom plate 40 or the cover plate 50 are used as triple-sided corrugated cardboard, the depth of the inner mouth provided in the bottom plate or the cover plate becomes deeper. The bearing capacity of the inner box 20 positioned in the correct position can be further improved.

In addition, the bag 30 in the present invention is to form an application layer capable of breathable blocking power and moisture resistance (including a concept that can be coated only on the surface or penetrate into the inside of the glassine paper) on the glassine on which the paper is pressed. Then, the band-type adhesive line 32 on the edge of the four sides and the four adhesive lines 33 at an angle to the bottom are adhered to form a certain adhesive width by heat by the application layer 31, and then the open top is sealed ( 30), the contents are packed in the inner space and sealed with heat, so that it can be kept excellent in cold storage due to the ease of folding and airtightness.

In the present invention, the bag 30 inserted into the inner space of the inner box 20 is described as glassine paper made of paper, but the same effect can be obtained even if a plastic bag that is not breathable and does not leak moisture is used. of course there is

In this case, it is possible to maintain eco-friendliness by making sure to separate the plastic bags for collection.

In addition, natural lacquer is used for the original cardboard 3 of the outer box 10, the inner box 20, the bottom plate 40, the cover plate 50, or the corrugated cardboard 2 constituting the covers 11 and 21. By forming the coating layer 4 to a certain thickness to block moisture or air that can penetrate inside or outside the outer box 10 or the inner box 20, the cooling effect can be further improved.

In addition, in order to improve the adhesion of the bottom plate 40 or the cover plate 50 to the outer box in the present invention, as well as to secure the compactness of assembly when the inner box is assembled with the outer box, it is bent at the edge of the support plate or the cover plate. An air layer ( 5) is formed to provide excellent cooling as well as when the bottom plate 40 or the cover plate 50 on which the air layer 5 is formed acts elastically to cause a minute change in the height of the inner box 20 during the manufacturing process In the case of being introduced into the outer box 10 in Edo, the inner box 20 is firmly assembled when assembling the outer box 10 due to a difference in microscopic specifications, so that it is possible to prevent the flow and the cooling can be excellent. .

When the inner box is placed in the inner mouth provided on the support plate on which the air layer 5 is formed, when the contents packaged in the inner box are heavy, the support plate sags downward due to the air layer. By stacking the auxiliary corrugated cardboard as much as possible, it is possible to prevent sagging downward, and the spaced space of the inner box is maintained uniformly, so that the cooling can be excellent.

11 shows another embodiment of the inner box 20 of the present invention, when the bottom surface of the inner box extends with the side surface, the connected portion of the bottom surface and the side surface is completely blocked by taking a structure of the inner box This is to prevent water from leaking out even when the inner space is filled with ice.

For this purpose, the inner box 20 has a bottom surface 22 made of four sides, a side surface 23 of four sides extending upright from the bottom surface, and the side surfaces are connected to each other when the side is folded upright in an unfolded state. The connection surface 24 is provided so that the inner space of the inner box is provided by the left and right folding lines 25 that are folded with the side surfaces 23 on the connection surface 24 and the folding lines 26 in the center thereof.

At this time, a waterproof coating 4 is formed on the original cardboard 3 of the corrugated cardboard 2 forming the inner box 20 to prevent damage by ice, etc., and the central fold line 26 of the connection surface 24 ) can be used as the handle 27 as it protrudes inward.

In addition, the cover 21 covering the open upper end of the inner box is separately covered in a separated state that can cover the open upper end as a whole as shown in FIG. 12, so airtightness can be further improved .

1: Separation space 2: Corrugated cardboard
3: Original paper 4: waterproof layer
5: air layer 6: corrugated core
10: outer box
11: Cover 12: Bottom
20: My box
21: cover 22: bottom
23: side 24: connection side
25: left and right fold line 26: center fold line
27: handle
30: bag
31: coating layer 32: border adhesive line
33: bottom adhesive line
40: base plate
41: separation surface 42: opening
43: first frame band 44: bending frame
50: cover plate
51: separation surface 52: opening
53: second frame band 54: bending frame

Claims (11)

an outer box 10 provided with a cover 11 made of at least double-sided corrugated cardboard;
In the outer box 10, the inner box 20, the upper part of which is made of a minimum double-sided corrugated cardboard, is spaced apart by a predetermined distance to form a space 1 so as to be fixed inside,
Inside the inner box 20, the contents for cooling are packaged using a bag 30 with moisture resistance and air permeability blocked,
The opened upper end of the bag 30 is sealed by thermal bonding, and it is inserted into the inner box 20,
At the upper end and the lower end of the inner box 20, a support plate 40 and a cover plate 50 made of a minimum double-sided corrugated cardboard are provided, and the rim of the support plate 40 and the cover plate 50 has a spaced surface having a certain width. (41,51) is provided and the center of the support plate and the cover plate provided with openings (42,52) are coupled to the bottom surface of the inner box 20 and the opened upper part,
By inserting the inner box 20 into the outer box 10, there is a space 1 between the outer box and the inner box, as well as the bottom surface 22 and the side 23 of the inner box 20, as well as the upper surface. Insulated paper packaging box in which the contents that need to be kept cold packed in the bag 30 of the inner box 20 realize the same cool effect as that of Styrofoam by securing enough air layer According to claim 1,
The outer box 10 is to be used with more than double-sided corrugated cardboard, and a combination of large and small corrugated corrugated ribs.
Insulated paper packaging box with a small gap between the corrugations of the corrugated core is placed on the outer surface of the outer box 10 to prevent damage to the outer box when shearing force occurs from the outside. According to claim 1,
Using double-sided corrugated cardboard for the inner box 20, the bottom plate 40, and the cover plate 50,
Insulated paper packaging box with excellent cooling effect as well as support and shearing power by using the same wide and narrow rib spacing as the outer box for the corrugated core of the double-sided corrugated cardboard According to any one of claims 1 to 3,
A bottom plate 40 made of a minimum double-sided corrugated cardboard is placed in close contact with the bottom surface 11 of the outer box 10,
A first border strip 43 is formed on the edge of the bottom plate 40 with a spaced surface 41 with a certain width and an opening 42 is provided in the center thereof,
The central part of the bottom plate 40 is provided with an inner inlet so that the bottom surface of the inner box 20 is inserted to a predetermined depth in the inner inlet, and the lower end of the inner box is positioned to prevent flow,
A cover plate 50 capable of covering the opened upper end of the inner box 20 and a rim of the cover plate 50 are provided with a spaced surface 51 with a predetermined width, and an opening 52 is provided in the center After attaching and fixing the second frame 53 to the cover plate 50 to provide an inner mouth, the opened upper end of the inner box 20 is inserted to a certain depth in the inner mouth portion, and the opened upper end of the inner box is removed. Insulated paper packaging box that keeps airtightness while blocking According to claim 4,
First cover the opened upper end of the inner box 20 with the cover 24 of the inner box,
Insulated paper packaging box that can be additionally covered with the cover plate 50 to expect even better cooling effect According to claim 4,
By using the first and second border strips 43 and 53 provided in the bottom plate 40 or the cover plate 50 as triple-sided corrugated cardboard, the depth of the inner mouth provided in the bottom plate or the cover plate is deepened. Insulated paper packaging box in which the bearing capacity of the inner box 20 located in the position can be further improved According to claim 1,
The bag 30 forms an application layer (including a concept that can be coated only on the surface or can penetrate into the inside of the glassine paper) with breathable blocking power and moisture resistance on glassine paper on which the paper is pressed,
By the application layer 31, the band-type adhesive line 32 on the edges of the four sides and the four adhesive lines 33 inclined to the bottom surface are formed and adhered to a certain adhesive width by heat, and then the open top is sealed ( 30) Insulated paper packaging box with contents packed in the inner space and sealed with heat According to claim 1,
At least one of the original cardboard 3 of the outer box 10, the inner box 20, the bottom plate 40, the cover plate 50, or the corrugated cardboard 2 constituting the covers 11 and 24, has natural lacquer Insulated paper packaging box in which the coating layer (4) is formed to a certain thickness using According to claim 1,
A bending frame (44, 54) is provided on the edge of the support plate or the cover plate,
The ends of the bending frames 44 and 54 are brought into close contact with the bottom surface of the outer box 10 to form an air layer 5 therebetween to ensure excellent cooling,
When the bottom plate 40 or the cover plate 50 on which the air layer 5 is formed is elastically acted upon to enter the outer box 10, even when the height of the inner box 20 causes a minute change in the manufacturing process. When assembling the outer box 10 due to minute differences in specifications, the inner box 20 is firmly assembled to prevent flow. 10. The method of claim 9,
Insulated paper packaging box with excellent cooling while preventing sagging even when the contents are heavy by stacking auxiliary corrugated cardboard on the air layer (5) of the support plate 5. The method of claim 4,
The inner box 20 has a bottom surface 22 made of four sides, a side surface 23 of four sides extending upright from the bottom surface, and a connection in which the sides are connected to each other when the side is folded upright in an unfolded state The inner space of the inner box is provided by having a face 24 and comprising a left and right fold line 25 that is folded with the side 23 on the connection face 24 and a fold line 26 at the center thereof,
Insulated paper packaging box in which a waterproof coating 4 is formed on the original cardboard 3 of the corrugated cardboard 2 forming the inner box 20 to prevent damage by ice, etc.

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