KR20230044672A - Manufacturing method of inlay for packaging box and inlay manufactured thereby - Google Patents

Abstract

Provided are a manufacturing method of an inner paper box for a packaging box and the inner paper box manufactured thereby. According to the present invention, in order to use a cardboard as the inner paper box, when a corrugated cardboard is cut (processed) at an angle in the direction of a core and folded into a box shape, the core of the cardboard is folded at a certain angle. Therefore, a vertical angle of a folded portion receive a force evenly, and a repulsion force which causes the folded surface of the box to become a right angle becomes stronger. In addition, the force to form the right angle with the same elastic force of left and right side plates and front and rear side plates is strengthened by a folded unit folded in the same direction at the four corners without any incision portions due to folding into the box. Therefore, vertical angles of each side plate are provided equally. As a result, when upper and lower parts inner paper boxes are joined to each other, a degree of adhesion increases without a phenomenon of surface lifting, maximizing an insulation effect. The manufacturing method of the inner paper box for the packaging box of the present invention comprises: a) a preparing step; b) a cutting out step; and c) a folding step.

Description

Manufacturing method of inlay box for packaging box and inlay box manufactured thereby

The present invention relates to an inlay box that is housed inside a packaging box formed by folding corrugated cardboard in a prefabricated manner and is used for the purpose of keeping warm or cold. The vertical angle receives force evenly, so the repulsive force to make the bent surface of the box become a right angle is strong, and the left, right side plates and front, Packing box that maximizes the insulation effect by increasing the degree of adhesion without lifting the sides when the upper and lower inner boxes are coupled to each other by providing the same vertical angle of each side plate as the rear plate has a strong force to form a right angle with the same elastic force It relates to a manufacturing method of an inlay box for dragons and an inlay box manufactured thereby.

In general, corrugated cardboard used in packaging boxes is given more improved bursting strength and compressive strength compared to weight and unit price in order to overcome the limitations of the material as paper, which is the thickness and width of the corrugated cardboard. It mainly depends on the corrugated medium (wrinkles) formed in close contact with the inside to maintain the corrugated medium, and contains buffering and heat retention properties that mitigate external shock according to the formation of a plurality of space layers by the corrugated medium, including packaging boxes It is used in a very wide variety of ways.

As shown in FIG. 1, the corrugated cardboard has a single-layer structure in which a corrugated medium 3 is joined at regular intervals between the surface paper 1 and the back paper 2, and is most often used for packaging boxes. Accordingly, a multi-layered corrugated board in which two corrugated mediums 3 and 3 are laminated between the surface paper, the center paper, and the back paper for the purpose of increased heat retention and buffering is also disclosed.

These corrugated cardboards are sold in the form of rectangular plates by manufacturers, and consumers (packing box manufacturers) purchase them to manufacture mostly rectangular packaging boxes and inner paper boxes.

However, such corrugated cardboard has a disadvantage in that it is vulnerable to moisture due to the nature of the paper material, so a waterproof coating is applied when using an inner box for frozen product packaging.

These inlay boxes are manufactured and assembled into a box shape by folding in a cutting process to fit the inside of the outer packaging box.

However, the conventional inlay box is the same as the corrugated medium (3) in a state in which the outer and fold lines are cut (cut and pressed) by a processing press (cutting machine) in the same horizontal or vertical direction as the corrugated medium (3) direction of the plate-shaped corrugated cardboard. The outline is cut in the vertical or horizontal direction, and the bones meet vertically or horizontally to form a box shape. As the strength and elasticity of the folded side plates of the box are weak, they do not form a vertical angle with the bottom plate, so the upper and lower inlay boxes There is a disadvantage in that the adhesion effect between the layers is lowered and the airtightness is lowered and the cooling effect is lowered.

Moreover, in order to maintain the shape of a box, the conventional inlay box is provided in a state where the corner folds of the four corners are overlapped with the left and right side plates or the front and rear side plates that are folded vertically, so that the side plate portion where the corner folds overlap is rather Due to the deviation of the vertical angle while being pushed inward, the adhesion between the inner and outer surfaces of each side plate between the upper and lower inlay boxes that are coupled to each other further deteriorates, resulting in poor airtightness.

In particular, in the conventional inlay box, one side of the corner fold portion is cut to provide the fold, so that the inside of the inlay box and the airtightness are further degraded.

Korean Registered Patent No. 10-1600789 (registered on March 2, 2016)

The technical problem to be achieved by the present invention is to manufacture the inlay by processing the outer cutting surface and the folding line at an angle to the direction of the corrugated core of the corrugated cardboard in order to maximize the airtightness for the cold storage of the inlay box stored in the upper and lower outer boxes, and the processed folding line By folding into a box shape by folding the corrugated cardboard at a certain angle, the vertical angle of the folded part receives force evenly, and as a result, the repulsive force to make the bent surface of the box make a right angle maximizes the bent surface of the inlay box. It is to provide a method of manufacturing an inlay box that maximizes airtightness by maintaining a rectangular parallelepiped shape by maintaining a right angle and maximally maintaining the close contact surface of the mating surfaces during mutual coupling.

In addition, in the present invention, the corner folds of the four corners of the left and right plates and the front and rear plates formed with the erection plate and the folding plate erected in an inclined state with the goal center direction are each side plate in the same direction in the clockwise or counterclockwise direction. It is folded and assembled on the inner surface of the packaging box, which is an outer box, in a state where the folding plate of each side plate is covered, and at the same time, the folding plate and the corner folding part are supported and have the same elastic force inward, so that the left and right plates and the front and rear side plates are supported. It is to provide an inlay box for a packing box in which the upright plate and the folding plate strongly maintain a right angle with the bottom plate to maximize confidentiality by maintaining the contact surface with the corresponding upright plate or folding plate of the same structure of the inlay box.

In order to solve the above problems,

In the method of manufacturing an inlay box for a packaging box through cutting to a plate-shaped corrugated cardboard made of a corrugated medium laminated to one side of the surface paper and the back paper,

a) preparing sheet corrugated cardboard by waterproof coating and drying;

b) processing the prepared corrugated cardboard with cutting knives and pressing knives of a processing press arranged obliquely in the direction of the corrugated core to cut the outer cutting surface and the fold line of the plate-like inlay formed in an inclined direction to the corrugated core;

c) The left and right side plates and the front and rear side plates, which form the upright and folded plates at the bottom plate, are sequentially folded in the upward and vertical direction of the cut inlay of the plate body by the folding line, and the corner folds of the four corners of the adjacent side plates are slanted. After folding each side plate in the same direction in the clockwise or counterclockwise direction in the state of overlapping by the folding line, folding each folding plate in the downward vertical direction to cover the corner fold and fold the inlay box: There is a feature of the method for manufacturing an inlay box for a packaging box including.

Here, the above inclination angle is most preferably cut to 45 degrees in the range of 30 to 60 degrees with respect to the corrugation center direction and the cutting knife and pressing knife of the processing press.

In addition, the corner fold extends to the same height as each erecting plate and is folded by the folding line of the erecting plate without an incision line, so that it is folded at the same height as the height of the erecting plate forming the box wall at the time of folding and is manufactured without a step desirable.

In the inlay box of the present invention, the corner folds of the four corners of the left and right plates and the front and rear plates forming the erection plate and folding plate erected in an inclined state with the direction of the corrugated cardboard of the plate body corrugated board are clockwise or counterclockwise. Each side plate is bent and folded in the same direction, and the folding plate of each side plate is assembled on the inner surface of the packaging box, which is an outer box, in a state of being covered, and at the same time, the folding plate and the corner folding portion are supported and have the same elastic force inward, so that the left and right side plates and It is characterized in that the upright plate and the folding plate of the front and rear plates maintain a right angle with the bottom plate, so that the close contact surface with the matching upright plate or folding plate of the inlay box of the same structure is provided confidentially.

Here, the corner fold extends at the same height as each erecting plate and is folded by the folding line of the erecting plate without an incision line, so that it is folded at the same height as the height of the erecting plate forming the box wall at the time of folding, so that the height of each erecting plate It is characterized in that it is formed without a step at the same height as

According to the present invention, by utilizing the structure of corrugated cardboard, the cutting process is changed to incline the direction of the corrugated paper, and strong elastic force is applied during folding to reinforce the vertical angle between the bottom plate and each side plate, resulting in adhesion due to the combination of the upper and lower inlay boxes. It has the effect of ensuring confidentiality as much as possible by supplementing it.

In addition, according to the present invention, when assembling a packing box, which is an outer box, in a folded state by a folding line, the rectangular parallelepiped shape is strongly maintained and the upper and lower inlay boxes coupled to each other are assembled, confidentiality by guaranteeing the adhesion of the corresponding surfaces. As a characteristic, there is an advantage that the insulation property is guaranteed as much as possible.

1 is a front view and a plan view showing the basic structure of corrugated cardboard.
2 is an arrangement state diagram for cutting and pressing a processing press inclined with a corrugated medium of corrugated cardboard for cutting a plate-like inlay according to the present invention.
FIG. 3 is a plan view of upper and lower plate-shaped body inlays cut by FIG. 2 .
4 to 7 are folding step diagrams showing manufacturing steps of the upper inlay box.
8 to 11 are folding step diagrams showing manufacturing steps of the lower inlay box.
12 is a photograph of an actual product showing waterproofness of an inlay box manufactured according to the present invention.
13 and 14 are a plan view and a folding step diagram of some excerpts of another embodiment of the corner folding part according to the present invention.
15 is a perspective view illustrating assembly with a packaging box, which is an outer box, according to the use of the upper and lower inner boxes of 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 presented in the drawings may be simplified or simplified as long as they do not cause problems in the description of the present invention.

Figure 2 is a state diagram of the arrangement for cutting and pressing the processing press at an angle with the corrugated core of corrugated cardboard for cutting the inlay of the plate body according to the present invention, and Figure 3 is a plan view of the upper and lower plate body inlay cut by FIG. 2 .

Referring to these drawings, the present invention uses a corrugated cardboard (C) in which a corrugated core 3 is laminated between a front paper 1 and a back paper 2 made of paper.

This corrugated cardboard (C) uses a surface coated with a non-toxic coating agent and dried in consideration of waterproofness, which is the weakness of the paper material.

The plate-shaped corrugated cardboard (C) prepared in this way is placed in a processing press (cutting machine), and the outer surface and fold lines of the inlay are processed (cut) by the cutting blade and pressing blade of the processing press.

At this time, the feature of the manufacturing method of the present invention is that the same horizontal direction as the corrugated medium 3 of the corrugated cardboard (C) forms the outer surface and fold line of the inlay by cutting in the vertical direction as in the prior art, as shown in FIG. 2, Cutting (cutting) is performed in a state where the corrugated cardboard (C) is arranged obliquely with the corrugated medium (3) (imaginary line of one-dotted dashed line).

Specifically, the manufacturing method of the inlay box for the packaging box of the present invention,

Considering the weakness of the paper material, which is vulnerable to moisture, prepare a square corrugated board (C) coated with a non-toxic waterproofing solution and dried.

This waterproof coating technology of corrugated cardboard (C) is already known in the art, so it will be sufficiently understood even if a detailed description is omitted.

As shown in FIG. 2, the prepared corrugated cardboard (C) is processed in a state in which the cutting knife (P1) and the pressing knife (P2) of the processing press (P) are disposed at an angle to the direction of the corrugated medium (3) of the corrugated cardboard (C). By doing so, the outer cutting surface 11 and the folding line 12 of the plate-shaped inlays 10 and 20 are cut obliquely in the direction of the corrugated medium 3, and the upper plate-shaped inlay 10 and the lower plate-shaped inlay 20 are simultaneously process

Here, the cutting knife P1 of the processing press P is the outer cutting surface 11 of the inlay, but the pressing knife P2 strongly presses the formation of the fold line 12 to facilitate the folding operation, Since these technologies are already commercialized in the packaging industry, it is safe to omit the details.

As shown in FIGS. 4 to 7, the upper plate-shaped chain paper 10 is formed by folding plates 31a, 32a, 33a, and 34a and folding plates 31b and 32b from the bottom plate 21 by the folding line 12. , 33b, 34b), the left and right plates 31 and 32 and the front and rear plates 33 and 34 are sequentially folded in an upward and vertical direction, and the corner folding parts 40 of the four corners of the adjacent side plates are diagonally folded. In the state of overlapping by the line 41, after folding each side plate in the same direction in the clockwise or counterclockwise direction, fold each of the folding plates 31b, 32b, 33b, 34b in the downward vertical direction. The corner folding portion 40 is covered to complete the upper inlay box A1.

Except that the lower plate-shaped body inlay 20 is cut to have a width to accommodate the entrance of the upper inlay box 10A built in the upper plate-shaped body magazine 10 and a height for a space capable of storing products There is not a big difference.

However, the lower plate-shaped chain paper 20 has a large corner fold 40, so the folding work is facilitated by cutting a square cut groove 42 at the corner of the oblique fold line 41 to facilitate the folding work. there is only

In addition, as shown in FIGS. 13 and 14, the corner folding part 40 forms a square corner plate 43 by one side cutting line 44 and diagonal folding line 41, so that the diagonal folding The corner square plate 43 covers the folding plates 31b, 32b, 33b, 34b in a state of being in close contact with the thin plates 31a, 32a, 33a, 34a in an extended state, so that the upper and lower inlay boxes A1 and A2 ) can be completed.

The lower plate-shaped body incarceration 20 takes the same steps as the folding operation of the upper plate-shaped body restraint 10.

That is, as shown in FIGS. 8 to 11, the folding plates 31a, 32a, 33a, and 34a and the folding plates 31b, 32b, 33b, and 34b are formed in the bottom plate 21 by the folding line 12. The formed left and right plates 31 and 32 and the front and rear plates 33 and 34 are sequentially folded in an upward and vertical direction, and the corner folds 40 of the four corners of the adjacent side plates are placed at the vertices of the square cut grooves 42. After folding each side plate in the same direction as the clockwise or counterclockwise direction in the state of overlapping by the oblique fold line 41 extended to the folded state, each folding plate 31b, 32b, 33b, 34b downward It is folded in the vertical direction to cover the corner folded portion 40 to complete the lower inlay box A2.

Here, the inclination angle (θ) between the corrugated medium 3 of the corrugated cardboard C and the cutting knife P1 and the pressing knife P2 of the processing press P is 30 degrees to 60 degrees with respect to the direction of the corrugated medium 3 It is most preferable to cut in a state where it can be arranged at an angle, preferably at 45 degrees.

In addition, the folding plates 31a, 32a, 33a, and 34a and the folding plates 31b, 32b, 33b, and 34b are processed into two rows of the thickness and width of the folding line 12 in consideration of the thickness of the corrugated cardboard according to folding.

In addition, the corner fold portion 40 extends at the same height as each of the erection plates 31a, 32a, 33a, and 34a by the folding line 12 of the elevation plates 31a, 32a, 33a, and 34a without a cutting line. It is folded to the same height as the height of each of the erection plates 31a, 32a, 33a, 34a forming the box wall at the time of folding, so that the corner portion is finished without a step to increase confidentiality.

The upper and lower inlay boxes A1 and A2 constructed in this way are as shown in FIG. 12. The left and right sides of the plate-shaped corrugated cardboard (10, 20) formed in the direction of the corrugated board (3) and the erection plates (31a, 32a, 33a, 34a) and folding plates (31b, 32b, 33b, 34b) erected in an inclined state The corner folds 40 of the four corners of the plates 31 and 32 and the front and rear side plates 33 and 34 are bent at each side plate 31, 32, 33 and 34 in the same clockwise or counterclockwise direction. Folded and assembled on the inner surface of the packaging box, which is an outer box, with the folding plates (31b, 32b, 33b, 34b) of each side plate covered, and the folding plates (31b, 32b, 33b, 34b) and the corner folding part (40) As it is supported, it has the same elastic force inwardly, so that the upright plates 31a, 32a, 33a, 34a and folding plates 31b, 32b of the left and right plates 32 and 32 and the front and rear plates 33 and 34, 33b and 34b) maintain a right angle with the bottom plate 21 so that the upright plates 31a, 32a, 33a, 34a or folding plates 31b of the upper inlay box A1 or the lower inlay box A2 of the same structure , 32b, 33b, 34b) can improve airtightness.

In addition, as shown in the use state diagram of FIG. 13, the present invention. The corner fold portion 40 extends at the same height as each of the erection plates 31a, 32a, 33a, and 34a and is folded by the folding line 12 of the elevation plates 31a, 32a, 33a, and 34a without a cutting line. When folded, the box wall is formed without a step at the same height as the height of each erecting plate, so that the airtightness is guaranteed when the upper and lower inlay boxes A1 and A2 are assembled.

In this way, 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 and should not be defined, and should be defined by not only the claims described later but also those equivalent to the claims.

1: surface paper 2: back paper
3: corrugated medium 10: upper plate body inlay
11: outer cutting surface 12: folding line
20: lower plate body inlay 21: bottom plate
31: left plate 31a, 32a, 33a, 34a: erection plate
31b, 32b, 33b, 34b: folding plate
32: right plate 40: corner fold
41: oblique fold 42: square cutting groove

Claims (5)

In the method of manufacturing an inlay box for a packaging box through cutting to a plate-like corrugated cardboard made of a corrugated medium laminated to one side of the surface paper and the back paper,
a) preparing sheet corrugated cardboard by waterproof coating and drying;
b) processing the prepared corrugated cardboard with cutting knives and pressing knives of a processing press arranged at an angle to the direction of the corrugated cardboard to cut the outer cutting surface and the fold line of the plate-like inlay formed to be inclined to the direction of the corrugated core;
c) The left and right side plates and the front and rear side plates, which form the upright and folded plates at the bottom plate, are sequentially folded in the upward and vertical direction of the cut inlay of the plate body by the folding line, and the corner folds of the four corners of the adjacent side plates are slanted. Folding the inlay box by folding each side plate in a downward vertical direction to cover the corner fold after folding each side plate in the same clockwise or counterclockwise direction in the state of overlapping by the folding line in a folded state:
Method for manufacturing an inlay box for a packaging box comprising a.
According to claim 1,
Step b) is a method for manufacturing an inlay box for a packing box, characterized in that the cutting knife and the pressing knife of the processing press are cut obliquely in the range of 30 degrees to 60 degrees with respect to the direction of the corrugated medium.
According to claim 1,
In the step c), the corner fold extends to the same height as each erecting plate and is folded by the folding line of the erecting plate without an incision line, so that it is folded at the same height as the height of the erecting plate forming the box wall at the time of folding, so that there is no step difference. A method for manufacturing an inlay box for a packaging box, characterized in that it is manufactured.
According to the method of claim 1, the corner folds of the four corners of the left and right plates and the front and rear plates formed with the erection plate and folding plate erected in an inclined state with the direction of the corrugated board of the plate-shaped corrugated board are clockwise or counterclockwise. Each side plate is folded in the same direction and assembled on the inner surface of the packaging box, which is an outer box, while the folding plate of each side plate is covered, and at the same time, the folding plate and the corner folding part are supported and have the same elastic force inward, so that the left and right side plates And for packaging boxes characterized in that the upright plate and folding plate of the front and rear plates maintain a right angle with the bottom plate, so that the close contact surface with the upright plate or folding plate of the upper and lower inlay boxes of the same structure is provided with confidentiality. deceived box. According to claim 4,
The corner folding part extends at the same height as each erecting plate and is folded by the folding line of the erecting plate without a cutting line, so that the height of the erecting plate forming the box wall at the time of folding is the same as the height of each erecting plate without a step. An inlay box for a packaging box, characterized in that formed.

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