KR102225367B1 - Disposable cooking container and method for manufacturing disposable cooking container - Google Patents

Abstract

The present invention relates to a disposable cooking container which is manufactured by coating a polypropylene (PP) resin on the inner surface of a paper material harmless to the human body, and to a manufacturing method thereof. According to the present invention, when a container used for cooking food is manufactured, a paper material is bent and molded to form a container, and a PP resin is coated on the inner surface of the container, and in particular, four corner portions thereof are overlapped, bent, and bonded to implement a new type of food cooking container capable of being completely sealed, so that the food cooking container is easily manufactured and is economical, and provides user convenience as well as easy handling such as excellent airtightness. Since the food cooking container is completely harmless to the human body, a user can cook and eat food with an easy mind. Since a separate folding line is formed on a side plate of the container, containers can be stacked flat, and thus the volume of the containers can be reduced in a distribution process as much as possible. In addition, since the container adopts a method capable of opening/closing a cover plate in an insertion type, the cover plate can be easily opened/closed and the overall manufacturability of the container including the cover plate can be increased.

Description

Disposable cooking container and manufacturing method {DISPOSABLE COOKING CONTAINER AND METHOD FOR MANUFACTURING DISPOSABLE COOKING CONTAINER}

The present invention relates to a disposable cooking container capable of cooking instant foods such as ramen, and more particularly, a disposable cooking container manufactured by coating a PP resin on the inner surface of a paper material harmless to the human body, and manufacturing the disposable cooking container. It's about the method.

In recent years, along with rapid economic growth and rapid changes in living standards, our social environment and lifestyle, especially dietary lifestyles, have changed significantly.

Modern people have pursued simplicity in a complex life, and eating out is gradually becoming a daily life due to the improvement of living standards due to economic growth, and accordingly, the prosperity of the restaurant industry and the use of instant convenience foods are rapidly increasing.

In addition, with the increase in leisure life such as camping due to the expansion of five-day work a week, the instant convenience food market is increasing every year.

Usually, instant convenience foods are mostly in the form of cooking food in a sealed food cooking container in a microwave oven.

Such a food cooking container is composed of a container body with a space formed therein and an open upper part, and a lead film covering the open upper part of the container body. After food is placed inside the container body, the container body is formed with a lead film. It is made in the form of sealing the upper part of the.

Therefore, it is convenient to cook because the food is cooked when the food is cooked by putting the food in the microwave oven and then turning the microwave for a predetermined period of time, and heat generated by colliding water molecules of moisture contained in the food Because it is a cooking method using, there is an advantage that you can cook quickly.

Currently, most food cooking containers, especially food cooking containers used in microwave ovens, are made of plastic or aluminum materials, and thus there is a problem in that ingredients harmful to the human body penetrate the food contained in the container during the cooking process.

Food cooking containers made of plastic materials are known to have carcinogenic substances when the container is deformed above 70℃, and various kinds of additives included in the product molding process are known to emit environmental hormones, and are heated due to weak heat and oil. When exposed to oil or oil, harmful substances are slowly leaked out.

Accordingly, the present invention aims to construct a food cooking container made of a paper material harmless to the human body that can replace a conventional plastic material or aluminum material that is not suitable for the food cooking container.

Korean Patent Registration No. 10-1489800 Korean Patent Laid-Open No. 10-2012-0006863 Korean Patent Laid-Open No. 10-2007-0076774 Korean Patent Laid-Open No. 10-2016-0124487 Korean Patent Application Publication No. 10-2018-0089010

Therefore, the present invention was devised in view of the above points, and when manufacturing a container used for food cooking, paper material is bent and molded to form a container, and the inner surface is coated with a PP resin (polypropylene resin). By implementing a new type of food cooking container that can be completely sealed by overlapping and bending the four corners, it is easy to manufacture, economical, and secure excellent airtightness, which is convenient for handling and use, and is completely harmless to the human body. Therefore, it is possible to cook and eat food with confidence, and by forming a separate folding line on the side plate of the container so that the containers can be stacked flat, the volume of the container in the distribution process can be reduced as much as possible, and the cover can be inserted. An object thereof is to provide a disposable cooking container and a manufacturing method capable of improving the overall fabrication of the container including the cover plate while making it easy to open and close the cover plate by adopting a method of opening and closing the plate. .

In order to achieve the above object, the disposable cooking container provided in the first embodiment of the present invention has the following characteristics.

The disposable cooking container is made in the form of a paper-made square container having a bottom plate, four side plates, and a cover plate, and the connecting portions forming the corners between the side plates are triangular corner plates extending from each of the side plates adjacent to each other. In addition to being joined through the inner surface of each other from the outside of the two-ply jointed edge plate is formed by bending the outer surface of either side plate to be joined.

Here, at the upper end of the side plate, wing plates that are bent horizontally at the side plate and integrally molded are formed, respectively, and a cover plate may be bonded to the upper surface of each wing plate thus formed.

In addition, PP resin (polypropylene resin) may be coated on the inner surface of the bottom plate and the side plate, the inner surface of the cover plate, the inner surface of the corner plate, and the inner surface of the wing plate.

Meanwhile, in order to achieve the above object, the method for manufacturing a disposable cooking container provided in the first embodiment of the present invention has the following characteristics.

The method of manufacturing a disposable cooking container includes a first step of preparing a disc and a cover plate made of a paper material, a first bending line forming a quadrangular shape at the center of the disk, and radially at each corner of the first bending line. The second step of dividing the bottom plate, the side plate and the corner plate by forming three consecutive second bending lines, and folding the side plate by using the first bending line, and using the second bending line, the corner plate The third step of joining the inner surfaces of the corner plates in contact with each other at the same time by folding them into two layers, and the fourth step of folding the corner plates joined in two layers sideways using the second bending lines overlapping each other and joining them to the outer surface of the side plate. It characterized in that it comprises a step, and a fifth step of closing the inside of the container by bonding the cover plate to the upper end of the side plate.

Here, the second step further includes a process of dividing the wing plate from the side plate by forming each of the third bending lines on the outer peripheries of the four places of the original plate, and the third step is the wing plate using the third bending line. It includes a process of folding horizontally, and the fifth step may further include a process of bonding the cover plate to the horizontally folded wing plate.

In addition, the original plate uses a PP resin (polypropylene resin) coated on the inner surface, and therefore, bonding can be performed by using the adhesive strength of the PP resin melted by heat fusion during bonding in the 3rd to 5th steps. I can.

Meanwhile, in order to achieve the above object, the disposable cooking container provided in the third embodiment of the present invention has the following characteristics.

The disposable cooking container manufacturing method is made in the form of a square container made of a paper material having a bottom plate, four side plates, and a cover plate, and the connecting portions forming the corners between the side plates are triangular corners extending from each of the adjacent side plates. The plate is joined from the outside of the side plate through the inner surface of each other, and the two-ply bonded edge plate is joined while being bent to the outer surface of either side plate, and both sides of the two side side plates facing each other among the four side side plates are the bottom plate and the bottom plate. It is characterized in that it has a structure in which the side plate can be folded flatly toward the bottom plate by forming a pair of fold lines that obliquely connect from the vertex where the side plate meets to the top of the side plate, and by the fold line at this time.

Here, the cover plate extends to the upper end of any one side of the four side side plates while having a fitting groove at the end thereof, and uses a fitting groove that is inserted into the fitting protrusion formed on any one side of the four side side plates. It is characterized by being able to cover the container.

In a preferred embodiment, the inner surface of the bottom plate and the side plate, the inner surface of the cover plate, and the inner surface of the corner plate may be coated with a PP resin (polypropylene resin).

On the other hand, in order to achieve the above object, the method for manufacturing a disposable cooking container provided in the third embodiment of the present invention has the following characteristics.

A first step of preparing a disk made of paper material and a cover plate connected to the disk by a cover plate bending line, a first bending line forming a quadrangular shape at the center of the disk, and each corner of the first bending line The side plate from the vertex where the bottom plate and the side plate meet on both sides of the side plate on the two sides facing each other among the four side plates by forming a second bending line of 3 radially extending from the part. The second step of forming a pair of fold lines obliquely leading to the top of the side plate, and the side plates are folded and erected using the first bending line, and the corner plates are folded in two layers using the second bending line, and at the same time, the corner plates are in contact with each other. The third step of joining the inner surfaces of each other and the fourth step of folding the two-ply bonded corner plates sideways using the overlapping second bending lines and bonding them to the outer surface of the side plates, and the folding during storage and transportation. It includes a fifth step of folding the side plate of the four sides inward using a line and folding it flat toward the bottom plate, or when using a container, folding the cover plate bending line of the cover plate and closing the inside of the container with the cover plate. to be.

In a preferred embodiment, the original plate uses a PP resin coated on the inner surface, and therefore, bonding using the adhesive strength of the PP resin melted by thermal fusion during bonding in the third and fourth steps. You can do it.

The disposable early container and manufacturing method provided by the present invention has the following effects.

1) Since it is made of a paper material that is harmless to the human body, harmful ingredients do not penetrate into the food even when cooking, such as heating, so there is an effect that food can be cooked and eaten with confidence.

2) It is possible to prevent waste of materials such as scrap by completely folding and manufacturing a single original paper material without splicing several pieces together during container manufacturing, and it has the effect of making it easy and reducing manufacturing costs significantly. .

3) By bending and bonding the four corners of the container in several layers, it is possible to secure a perfect sealing structure for the corners of the container to improve airtightness, thereby enhancing convenience and functionality in use. There is.

4) Fabrication through simplification of the manufacturing process, such as minimizing the number of adhesive application processes, by melting and attaching the PP material in a heat-sealing method when bonding after bending the container by using the PP resin coated on the inner surface of the paper material. There is an effect that can improve.

5) When the container is stored or transported, the container can be stacked flatly by using the folding line on the side plate of the container, thereby reducing the container volume in the distribution process as much as possible to handle and store or transport a larger number of containers. There is an effect that can be done.

6) By allowing the cover plate to cover the container to be opened and closed by a fitting type, it is possible to easily open and close the cover plate, as well as to eliminate the fusion (gluing) process when manufacturing the container and the cover plate. There is an effect that can improve the overall fabrication of the container containing.

1 and 2 are perspective views showing a disposable cooking container according to a first embodiment of the present invention
3 is a cross-sectional view showing a disposable cooking container according to a first embodiment of the present invention
4A to 4E are schematic diagrams showing a method of manufacturing a disposable cooking container according to a first embodiment of the present invention
5 is an exploded view showing a disposable cooking container according to a second embodiment of the present invention
6 and 7 are perspective views showing a disposable cooking container according to a third embodiment of the present invention
8 is a cross-sectional view showing a disposable cooking container according to a third embodiment of the present invention
9A to 9E are schematic diagrams showing a method of manufacturing a disposable cooking container according to a third embodiment of the present invention
10 is a perspective view showing a folded state of a disposable cooking container according to a third embodiment of the present invention

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

1 and 2 are perspective views illustrating a disposable cooking container according to a first embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating a disposable cooking container according to a first embodiment of the present invention.

As shown in FIGS. 1 to 3, the disposable cooking vessel includes a rectangular bottom plate 10, side plates 11a to 11d substantially vertically erected on four sides of each bottom plate 10, and the bottom. A paper material having a cover plate 12 including a handle 21 in addition to closing a space part (eg, a space part containing food) formed on the inside of the plate 10 and the side plates 11a to 11d. It is made in the form of a square container.

In particular, each of the connecting portions forming four corners between the side plates 11a to 11d is each adjacent side plates 11a to 11d, that is, two side plates 11a, 11b, and 11b that are in contact with each other to form corners. And 11c, 11c and 11d, 11d and 11a) is formed integrally extending from the triangular corner plate (13a, 13b) can be finished.

For example, the edge plates 13a and 13b formed integrally extending from the two adjacent side plates (for example, 11a and 11b) are bent to the outside of the edge formed by the side plates (for example, 11a and 11b). In the protruding state, the inner surfaces that are in contact with each other are joined, and the edge plates 13a and 13b joined in two layers are bent together toward the outer surface of either side plate (for example, 11a or 11b). It is bonded to the outer surface of 11a or 11b).

Accordingly, the four corners between the side plates 11a to 11d can be finished by bending and bonding of the two-ply corner plates 13a and 13b, and in the end, the four corners between the side plates 11a to 11d Since the corners of the container can form a perfect airtight structure, it is possible to completely block the leakage of the contents in the container.

At this time, one of the edge plates 13a and 13b overlapped in two layers, one edge plate 13a has a relatively short height compared to the other edge plate 13b, and as a result, the other edge plate ( In 13b), an exposed surface (reference numeral 19 in FIGS. 4A to 4C) through which the upper part of the inner surface naturally comes out may be formed.

Therefore, when the edge plates 13a and 13b joined in two layers are bent together and joined to the outer surface of the side plate (for example, 11a or 11b), it is coated on the exposed surface 19 of the edge plate 13b. It can be bonded by the melt adhesion of the PP resin, and eventually, the two-ply edge plates 13a and 13b can be bonded without using a separate adhesive.

As another example, when bonding using the melt adhesive force of the PP resin coated on the exposed surface 19, a known adhesive is applied to the outer surface of the edge plate 13a positioned in the same direction as the exposed surface 19. The outer surface of the corner plate 13a may also be joined together with the exposed surface 19.

In addition, the wing plate 14 is integrally extended at the upper end of the side plates 11a to 11d, and the wing plate 14 extending in this way is horizontally bent at the side plates 11a to 11d that are substantially vertical, At this time, the cover plate 12 can be bonded to the upper surface of each wing plate 14, that is, the upper surface of the four wing plates 14 of the four side plates 11a to 11d.

In a preferred embodiment, the entire inner surface of the paper material forming the bottom plate 10, the side plates 11a to 11d, the cover plate 12, the edge plates 13a, 13b, and the wing plate 14 has a certain thickness. The PP resin layer 20 is formed, and a part of the PP resin layer 20 at this time can be used as an adhesive when bonding between the plate and the plate and the cover plate 12 in a molten state through heat fusion. There will be.

For example, the PP resin layer 20 formed on the inner surfaces of the corner plates 13a and 13b can serve as an adhesive when bonding between the corner plates 13a and 13b, and the inner surface of the wing plate 14 Of the PP resin layer 20 formed in the PP resin layer 20 and the PP resin layer 20 formed on the inner surface of the cover plate 12, the PP resin layer 20 at the edge, that is, an area corresponding to the area of the wing plate 14 The branched PP resin layer 20 can serve as an adhesive when bonding between the wing plate 14 and the cover plate 12.

Here, the method of coating the PP resin on the inner surface of the original plate of the paper material and the method of heat-sealing the PP resin layer can be applied to a known coating method and a heat-sealing method, so a detailed description thereof will be omitted.

In this way, the disposable cooking container provided by the present invention is made of paper, so it is completely harmless to the human body such as no harmful substances even when heated. Since there are no parts to be spliced or cut and discarded, it can be manufactured very economically at low cost, and at the same time, it can be easily manufactured. In particular, the four corners of the container are double-bonded with two-ply edge plates (13a, 13b). Since it can be finished in a shape, it is possible to secure airtightness, such as being able to fundamentally block the leakage of contents, so there is an excellent advantage not only in terms of functionality, but also in terms of use and handling.

4A to 4E are schematic diagrams showing a method of manufacturing a disposable cooking container according to a first embodiment of the present invention.

As shown in FIGS. 4A to 4E, as a first step, a step of preparing the original plate 15 and the cover plate 12 made of a paper material is performed.

The original plate 15 is a substantially rectangular plate shape, and although a paper material itself may be applied, it is preferable to apply a PP resin coated over the entire inner surface of the original plate by a known coating method.

The outer line of the original plate 15 is a predetermined shape, for example, the outer line shape of the edge plates 13a and 13b to be described later, and the outer line shape of the wing plate 14 using a known cutting machine (not shown). Can be tailored to have.

In particular, in the case of the edge plates 13a and 13b formed on the original plate 15, one of the two edge plates 13a and 13b connected to each other, one edge plate 13a is the other edge plate 13b By cutting the outer line to have a relatively short height (length) compared to, when joining the edge plates 13a and 13b in two layers in the third step to be described later, the other edge plate 13b naturally upper part It is possible to have an exposed surface 19 with the inner surface coming out.

The cover plate 12 is also in the form of a substantially square plate, and although a paper material itself may be applied, it is preferable to apply a PP resin coated over the entire inner surface of the original plate by a known coating method.

In this case, in the case of the cover plate 12, the handle 21 may be formed in a protruding shape at one corner.

Next, as a second step, several bent lines are formed on the original plate 15 using a known bending line (folding line) forming method, and divided into plates serving respective corresponding roles is performed.

Here, the bent line (folding line) may be formed by a known method such as cutting a line, processing it shallowly with a laser cutting machine, or applying pressure to a portion to be folded (or shining).

To this end, first bending lines 16a to 16d having a quadrangular shape are formed in the central area of the original plate 15 to divide the bottom plate 10 corresponding to the area inside the bending line, and the first bending line Four side plates (11a to 11d) connected to the four sides of the floor plate (10) by forming three second bending lines (17a to 17c) radially from each corner of (16a to 16d) and adjacent to each other. Two corner plates 13a and 13b connected between each of the side plates 11a to 11d, that is, eight corner plates 13a and 13b are partitioned.

In this second step, each of the third bending lines 18a to 18d is formed parallel to the first bending lines 16a to 16d on the outer peripheries of four places of the original plate 15, that is, at the edges of the side plates 11a to 11d. Thus, the blade plate 14 can be partitioned.

The wing plate 14 is connected to the side plates 11a to 11d with the third bending lines 18a to 18d interposed therebetween, and both ends of the third bending lines 18a to 18d at this time are side plates 11a to 11d. ) And the outer ends of the second bending lines 17a and 17c forming a boundary between the edge plates 13a and 13b.

Next, as a third step, a step of folding and erecting the side plates 11a to 11d and the edge plates 13a and 13b using respective bending lines is carried out.

That is, the side plates 11a to 11d are folded and erected using the first bending lines 16a to 16d that form the boundary with the bottom plate 10, and at the same time, the edge plates 13a and 13b that are erected together are formed as a second. Using the bend lines 17a to 17c, fold them so that they overlap in two layers, and extend outwardly and arrange them.

Here, the edge plates 13a and 13b may be folded inward by the second bending line 17b in the middle and overlap each other in a state of facing each other.

In addition, the inner surfaces of the corner plates 13a and 13b are bonded by a heat-sealing method using the PP resin coated on the inner surface of the corner plates 13a and 13b, which are overlapped in two layers, as an adhesive.

In addition, in the third step, a process of horizontally folding the wing plate 14 may be performed using the third bending lines 18a to 18d.

When finished up to step 3 in this way, as can be seen in Figure 4c, the bottom plate 10 and the side plate (11a to 11d) erected up to make a square container shape, at this time the edge plate (13a, 13b) is a side plate It is in a state protruding outward from each corner of (11a-11d).

Next, as a fourth step, a step of processing the edge plates 13a and 13b, which are overlapped and joined in two layers, is folded to the side plates 11a to 11d and joined at the same time.

That is, as the edge plates 13a and 13b are overlapped and joined in two layers, the edge plates 13a and 13b are folded to one side using the second bending lines 17a and 17c overlapping each other, and the side plates 11a to 11d And the two-ply edge plates 13a and 13b to the side plates 11a-11d using the melt adhesive force of the PP resin coated on the exposed surface 19 on the edge plate 13b at this time. Can be bonded.

Alternatively, when bonding using the melt adhesive force of the PP resin coated on the exposed surface 19, after applying a known adhesive to the outer surface of the edge plate 13a positioned in the same direction as the exposed surface 19 , At this time, the outer surface of the edge plate 13a may also be bonded together with the exposed surface 19.

Next, as a fifth step, a step of sealing the cover plate 12 after filling predetermined contents in the space formed inside the bottom plate 10 and the side plates 11a to 11d is performed.

That is, the cover plate 12 is attached to the upper end of the side plates 11a to 11d to close the inside of the container, but the cover plate 12 on the wing plate 14 folded horizontally to the upper end of the side plates 11a to 11d After covering the wing plate 14 and the cover plate 12, the wing plate 14 and the cover plate 12 are joined using the melt adhesive force of the PP resin coated on the inner surface of the wing plate 14 and the cover plate 12.

When all the first to fifth steps are completed in this way, as can be seen in FIG. 4E, a disposable cooking container having a square shape made of a paper material can be manufactured.

5 is an exploded view showing a disposable cooking container according to a second embodiment of the present invention.

As shown in FIG. 5, the disposable cooking vessel includes a rectangular bottom plate 10, side plates 11a to 11d substantially vertically erected on four sides of each bottom plate 10, and the bottom plate 10. ) And the side plate (11a to 11d) and the space part (for example, a space part containing food) is closed, and a square container made of a paper material having a cover plate 12 including a handle 21 It will be made of.

In particular, each of the connecting portions forming four corners between the side plates 11a to 11d is each adjacent side plates 11a to 11d, that is, two side plates 11a, 11b, and 11b that are in contact with each other to form corners. And 11c, 11c and 11d, 11d and 11a) is formed integrally extending from the triangular corner plate (13a, 13b) can be finished.

For example, the edge plates 13a and 13b formed integrally extending from the two adjacent side plates (for example, 11a and 11b) are bent to the outside of the edge formed by the side plates (for example, 11a and 11b). In the protruding state, the inner surfaces that are in contact with each other are joined, and the edge plates 13a and 13b joined in two layers are bent together toward the outer surface of either side plate (for example, 11a or 11b). It is bonded to the outer surface of 11a or 11b).

Accordingly, the four corners between the side plates 11a to 11d can be finished by bending and bonding of the two-ply corner plates 13a and 13b, and in the end, the four corners between the side plates 11a to 11d Since the corners of the container can form a perfect airtight structure, it is possible to completely block the leakage of the contents in the container.

At this time, one of the edge plates 13a and 13b overlapped in two layers, one edge plate 13a has a relatively short height compared to the other edge plate 13b, and as a result, the other edge plate ( In 13b), an exposed surface (reference numeral 19 in FIGS. 4A to 4C) through which the upper part of the inner surface naturally comes out may be formed.

Therefore, when the edge plates 13a and 13b joined in two layers are bent together and joined to the outer surface of the side plate (for example, 11a or 11b), it is coated on the exposed surface 19 of the edge plate 13b. It can be bonded by the melt adhesion of the PP resin, and eventually, the two-ply edge plates 13a and 13b can be bonded without using a separate adhesive.

As another example, when bonding using the melt adhesive force of the PP resin coated on the exposed surface 19, a known adhesive is applied to the outer surface of the edge plate 13a positioned in the same direction as the exposed surface 19. The outer surface of the corner plate 13a may also be joined together with the exposed surface 19.

In addition, the wing plate 14 is integrally extended at the upper end of the side plates 11a to 11d, and the wing plate 14 extending in this way is horizontally bent at the side plates 11a to 11d that are substantially vertical, At this time, the cover plate 12 can be bonded to the upper surface of each wing plate 14, that is, the upper surface of the four wing plates 14 of the four side plates 11a to 11d.

In particular, in the case of the disposable cooking container according to another embodiment of the present invention, when the container is sealed with the cover plate 12, it includes a structure capable of securing the airtight performance of the four corners of the container.

To this end, both ends of the two wing plates 14 at positions facing each other among the four wing plates 14 have a width equal to the width of the wing plate 14 and a wing plate sealing portion extending a predetermined length. (22) is formed.

Accordingly, the wing plate sealing portion 22 of the wing plate 14 is joined while being overlapped with the top or bottom end of the adjacent wing plate 14 in the container shape, and in this state, the cover plate 12 Since the wing plate 14 is bonded to the wing plate 14, the wing plate 14 can be in a continuous continuous shape over the entire circumference of the container, and thus, it is possible to completely seal the corners of the four containers.

In a preferred embodiment, the entire inner surface of the paper material forming the bottom plate 10, the side plates 11a to 11d, the cover plate 12, the edge plates 13a, 13b, and the wing plate 14 has a certain thickness. The PP resin layer 20 is formed, and a part of the PP resin layer 20 at this time can be used as an adhesive when bonding between the plate and the plate and the cover plate 12 in a molten state through heat fusion. There will be.

For example, the PP resin layer 20 formed on the inner surfaces of the corner plates 13a and 13b can serve as an adhesive when bonding between the corner plates 13a and 13b, and the inner surface of the wing plate 14 Of the PP resin layer 20 formed in the PP resin layer 20 and the PP resin layer 20 formed on the inner surface of the cover plate 12, the PP resin layer 20 at the edge, that is, an area corresponding to the area of the wing plate 14 The branched PP resin layer 20 can serve as an adhesive when bonding between the wing plate 14 and the cover plate 12.

Here, the method of coating the PP resin on the inner surface of the original plate of the paper material and the method of heat-sealing the PP resin layer can be applied to a known coating method and a heat-sealing method, so a detailed description thereof will be omitted.

6 and 7 are perspective views illustrating a disposable cooking container according to a third embodiment of the present invention, and FIG. 8 is a cross-sectional view illustrating a disposable cooking container according to a third embodiment of the present invention.

6 to 8, the disposable cooking vessel includes a rectangular bottom plate 10, side plates 11a to 11d substantially vertically erected on four sides of each bottom plate 10, and the bottom. A paper material having a cover plate 12 including a fitting plate 28 as well as closing a space part (eg, a space part containing food) formed inside the plate 10 and the side plates 11a to 11d It is made in the shape of a square container.

In addition, a fitting protrusion 26 is formed at an upper end of the side plate 11b of any one of the four side plates 11a to 11d at a position about the middle of the length of the side plate, and the fitting protrusion 26 at this time is the cover plate 12 It is possible to be caught while being fitted into the fitting groove (25) in.

In particular, each of the connecting portions forming the four corners between the side plates 11a to 11d is each of the side plates 11a to 11d that are adjacent to each other, that is, two side plates 11a and 11b and 11b that are in contact with each other to form the corners. And 11c, 11c and 11d, 11d and 11a) is formed integrally extending from the triangular corner plate (13a, 13b) can be finished.

For example, the edge plates 13a and 13b formed integrally extending from the two adjacent side plates (for example, 11a and 11b) are bent to the outside of the edge formed by the side plates (for example, 11a and 11b). In the protruding state, the inner surfaces that are in contact with each other are joined, and the edge plates 13a and 13b joined in two layers are bent together toward the outer surface of either side plate (for example, 11a or 11b). It is joined to the outer surface of 11a or 11b).

Accordingly, the four corners between the side plates 11a to 11d can be finished by bending and bonding of the two-ply corner plates 13a and 13b, and in the end, the four corners between the side plates 11a to 11d Since the corners of the container can achieve a perfect sealing structure, it is possible to completely block the leakage of the contents in the container.

At this time, one of the edge plates 13a and 13b overlapped in two layers, one edge plate 13a has a relatively short height compared to the other edge plate 13b, and as a result, the other edge plate ( 13b) can be formed with an exposed surface (reference numeral 19 in FIGS. 9A to 9C) through which the upper part of the inner surface naturally comes out.

Therefore, when the edge plates 13a and 13b joined in two layers are bent together and joined to the outer surface of the side plate (for example, 11a or 11b), it is coated on the exposed surface 19 of the edge plate 13b. It can be bonded by the melt adhesion of the PP resin, and eventually, the two-ply edge plates 13a and 13b can be bonded without using a separate adhesive.

As another example, when bonding using the melt adhesive force of the PP resin coated on the exposed surface 19, a known adhesive is applied to the outer surface of the edge plate 13a positioned in the same direction as the exposed surface 19. The outer surface of the edge plate 13a may also be joined together with the exposed surface 19.

In a preferred embodiment, the bottom plate 10, the side plates 11a to 11d, the cover plate 12 to be described later, and the entire inner surface of the original plate of paper material forming the corner plates 13a, 13b have a PP resin layer having a predetermined thickness ( 20) is formed, and at this time, a part of the PP resin layer 20 is melted through heat fusion, and can serve as an adhesive during bonding between the plate and the plate.

For example, the PP resin layer 20 formed on the inner surfaces of the edge plates 13a and 13b can serve as an adhesive during bonding between the edge plates 13a and 13b.

Here, the method of coating the PP resin on the inner surface of the original plate of the paper material and the method of heat-sealing the PP resin layer can be applied to a known coating method and a heat-sealing method, so a detailed description thereof will be omitted.

In particular, from the vertices 23 where the bottom plate 10 and the side plates 11a, 11c meet, on both sides of the side plates 11a and 11c facing each other among the side plates 11a to 11d of the four sides, the side plates 11a, 11c ), a pair of folding lines (24) leading obliquely to the top of the bottom plate (10), that is, from the bottom of the side plates (11a, 11c) in contact with the vertices (23) of the bottom plate (10) to the top of the side plate (23), tilting toward the middle of the side plate length. A pair of folding lines 24 are formed.

Accordingly, as shown in FIG. 10, in a state in which a rectangular container shape is completed, the fold line 24 is folded to form the side plates 11b and 11d on both sides of which the fold line 24 is not formed, and the bottom plate ( 10), the side plates (11b, 11d) at this time are flattened toward the bottom plate (10), and the other side plates (11a, 11c) are bent outward and lie on their backs. Since it is in a flat state in parallel with the bottom plate 10 while taking a posture, in the end, the side plates 11a-11d of the four sides can be folded flat together with the bottom plate 10, and as a result, several containers are stacked and stored. When transporting, the volume can be reduced as much as possible.

In addition, the cover plate 12 is extendedly formed at the upper end of the side plate 11b or 11d of any one side of the side plates 11a to 11d of the four sides, for example, the upper end of the side plate 11b, and the cover plate formed in this way ( A cover plate bending line 27 is formed at the junction between 12) and the side plate 11b, and the cover plate 12 at this time can be folded using the cover plate bending line 27 to cover the upper end of the container. .

In addition, a collapsible fitting plate 28 is extended at the end of the cover plate 12, and a fitting groove 25 is formed in a long cut in a "c" shape in the fitting plate 28 formed in this way. do.

Therefore, after the cover plate 12 is folded through the cover plate bending line 27, it is continuously inserted into the fitting protrusion 26 on the side plate 11b using the fitting groove 25 in the fitting plate 28. In the end, the cover plate 12 is able to maintain the state of covering the container by the locking structure between the fitting groove 25 and the fitting protrusion 26 at this time.

In this way, the disposable cooking container provided by the present invention is made of paper, so it is completely harmless to the human body such as no harmful substances even when heated. Since there are no parts to be spliced or cut and discarded, it can be manufactured very economically at low cost, and at the same time, it can be easily manufactured. In particular, the four corners of the container are double-bonded with two-ply edge plates (13a, 13b). Since it can be finished in a shape, it is possible to secure airtightness, such as being able to fundamentally block the leakage of contents, so there is an excellent advantage not only in terms of functionality, but also in terms of use and handling.

9A to 9E are schematic diagrams showing a method of manufacturing a disposable cooking container according to a third embodiment of the present invention.

9A to 9E, as a first step, a step of preparing the original plate 15 and the cover plate 12 made of a paper material is performed.

The original plate 15 is a substantially rectangular plate shape, and although a paper material itself may be applied, it is preferable to apply a PP resin coated over the entire inner surface of the original plate by a known coating method.

The outer line of the original plate 15 is a predetermined shape, for example, the outer line shape of the edge plates 13a and 13b to be described later, and the outer line shape of the wing plate 14 using a known cutting machine (not shown). Can be tailored to have.

In particular, in the case of the edge plates 13a and 13b formed on the original plate 15, one of the two edge plates 13a and 13b connected to each other, one of the edge plates 13a is the other edge plate 13b By cutting the outer line to have a relatively short height (length) compared to, when the edge plates 13a and 13b are joined in two layers in the third step to be described later, the other edge plate 13b is naturally upper part. It is possible to have an exposed surface 19 with the inner surface coming out.

The cover plate 12 is also in the form of a substantially square plate, and although a paper material itself may be applied, it is preferable to apply a PP resin coated over the entire inner surface of the original plate by a known coating method.

This cover plate 12 extends to the upper end of the side plate 11b of any one of the four side plates 11a to 11d forming the side wall of the container, and the cover plate formed at the junction with the side plate 11b It can be folded by the bending line 27.

In addition, the cover plate 12 has an end, for example, a fitting plate 28 in which a fitting groove 25 is processed at an end opposite to the cover plate bending line 27 is formed, and the fitting groove 25 at this time Through the fastening structure between the fitting protrusion 26 formed on the side plate 11b, the covered state of the cover 12 is maintained.

Next, as a second step, several bent lines are formed on the original plate 15 using a known bending line (folding line) forming method, and divided into plates serving respective corresponding roles is performed.

Here, the bent line (folding line) may be formed by a known method such as cutting a line, processing it shallowly with a laser cutting machine, or applying pressure to a portion to be folded (or shining).

To this end, first bending lines 16a to 16d having a quadrangular shape are formed in the central area of the original plate 15 to divide the bottom plate 10 corresponding to the area inside the bending line, and the first bending line Four side plates (11a to 11d) connected to the four sides of the floor plate (10) by forming three second bending lines (17a to 17c) radially from each corner of (16a to 16d) and adjacent to each other. Two corner plates 13a and 13b connected between each of the side plates 11a to 11d, that is, eight corner plates 13a and 13b are partitioned.

In this second step, the vertices where the bottom plate 10 and the side plates 11a, 11c meet on both sides of the side plates 11a and 11c facing each other among the side plates 11a-11d constituting the four sides of the original plate 15. The process of forming a pair of folding lines 24 obliquely leading from (23) to the top of the side plates 11a and 11c may be further performed.

By placing the fold lines 24 on both sides of the two side plates 11a and 11c in this way, using the fold lines 24 at this time in the state that the four side plates 11a to 11d in the fourth step are erected by adhesive The two side plates 11b and 11d can be folded in sequence while partially overlapping, and accordingly, the two side plates 11b and 11d can be folded flat while being in close contact with the bottom plate 10, and at the same time, the side plates 11b The cover plate 12 attached to the) can also be folded flat together, and the other two side plates 11b and 11d can be folded outward and laid in a flat state parallel to the bottom plate 10. do.

Next, as a third step, a step of folding and erecting the side plates 11a to 11d and the edge plates 13a and 13b using respective bending lines is carried out.

That is, the side plates 11a to 11d are folded and erected using the first bending lines 16a to 16d that form the boundary with the bottom plate 10, and at the same time, the edge plates 13a and 13b that are erected together are formed as a second. Using the bend lines 17a to 17c, fold them so that they overlap in two layers and extend outwardly.

Here, the edge plates 13a and 13b may be folded inward by the second bending line 17b in the middle and overlap each other in a state of facing each other.

In addition, the inner surfaces of the corner plates 13a and 13b are bonded by a heat-sealing method using the PP resin coated on the inner surface of the corner plates 13a and 13b, which are overlapped in two layers, as an adhesive.

When finished up to step 3 in this way, as can be seen in Fig. 9c, the bottom plate 10 and the side plate (11a to 11d) erected above the square container shape is made, and at this time the edge plate (13a, 13b) is a side plate It is protruding outward from each corner of (11a-11d).

Next, as a fourth step, a step of processing the edge plates 13a and 13b, which are overlapped and joined in two layers, is folded to the side plates 11a to 11d and joined at the same time.

That is, as the edge plates 13a and 13b are overlapped and joined in two layers, the edge plates 13a and 13b are folded to one side using the second bending lines 17a and 17c overlapping each other, and the side plates 11a to 11d And the two-ply edge plates 13a and 13b to the side plates 11a-11d using the melt adhesive force of the PP resin coated on the exposed surface 19 on the edge plate 13b at this time. Can be bonded.

Alternatively, when bonding using the melt adhesive force of the PP resin coated on the exposed surface 19, after applying a known adhesive to the outer surface of the edge plate 13a positioned in the same direction as the exposed surface 19 , At this time, the outer surface of the edge plate 13a may also be bonded together with the exposed surface 19.

Next, as a fifth step, the container is finished with the cover plate 12 in a state where predetermined contents are filled in the space formed inside the container of the bottom plate 10 and the side plates 11a to 11d, or Alternatively, the bottom plate 10, the side plates 11a to 11d, and the entire cover plate 12 are folded flatly when loading for container storage or transportation.

As an example, after filling the predetermined contents in the space formed inside the container, the cover plate 12 connected to the upper end of the side plate 11b is folded to cover the container, and then the cover plate 12 A step of closing the container may be performed by inserting the fitting groove 25 into the fitting protrusion 26 on the side plate 11d.

As another example, when storing and transporting, a step of folding the side plates 11a-11d of the four sides inward using a folding line 24 and folding it flatly toward the bottom plate 10 together with the cover plate 12 may be performed. I can.

When all the first to fifth steps are completed in this way, as can be seen in FIGS. 9E and 10, a rectangular disposable cooking container made of a paper material or a disposable cooking container folded flat can be manufactured.

As described above, in the present invention, when manufacturing a container used for cooking food, paper material is bent and molded into a container shape, and a new food cooking container is provided in which the four corners of the container are overlapped and bent and bonded to completely seal , Container manufacturing is easy, it can be manufactured very economically, and it is easy to handle and use, such as securing excellent airtightness, and it is completely harmless to human body, so it can be used with confidence.

10: bottom plate
11a-11d: side plate
12: cover plate
13a,13b: corner plate
14: wing plate
15: original plate
16a~16d: 1st bending line
17a-17c: second bending line
18a-18d: 3rd bending line
19: exposed surface
20: PP resin layer
21: handle
22: wing plate sealing part
23: vertex
24: fold line
25: fitting groove
26: fitting protrusion
27: cover plate bending line
28: mounting plate

Claims (11)

delete delete delete delete delete delete It is made in the form of a square container made of paper material having a bottom plate 10, four side plates 11a to 11d, and a cover plate 12, and the joints forming the corners between the side plates 11a to 11d are adjacent to each other. The triangular corner plates 13a and 13b extending from each of the side plates 11a to 11d are joined through the inner surfaces of each other from the outside of the side plates 11a to 11d, and the corner plates 13a and 13b joined in two layers. ) Is bent to the outer surface of either side plate (11a~11d), and the bottom plate 10 and the side plate are on both sides of the side plates 11a and 11c facing each other among the four side plates 11a~11d. A pair of folding lines (24) obliquely extending from the vertex (23) where (11a, 11c) meets to the top of the side plates (11a, 11c) are formed, and the side plates (11a to 11d) are formed by the folding line (24) at this time. Disposable cooking container, characterized in that consisting of a structure that can be folded flat toward the bottom plate (10).
The method of claim 7,
The cover plate 12 extends to the upper end of the side plate 11b or 11d of any one of the four side plates 11a to 11d while having the fitting groove 25 at the end, and the side plates 11a to 11d of the four sides Disposable cooking container, characterized in that the container can be covered by using a fitting groove (25) that is fitted into the fitting projection (26) formed on one side of the side plate (11b or 11d).
The method according to claim 7 or 8,
Disposable cooking, characterized in that PP resin (polypropylene resin) is coated on the inner surfaces of the bottom plate 10 and the side plates 11a to 11d, the inner surfaces of the cover plate 12, and the inner surfaces of the corner plates 13a and 13b Vessel.
A first step of preparing a disk 15 made of a paper material and a cover plate 12 connected to the disk 15 by a cover plate bending line 27;
First bending lines 16a-16d forming a quadrangular shape in the center of the disk 15, and three second bending lines 17a extending radially from each corner of the first bending lines 16a-16d. By forming ∼17c), the bottom plate 10, the side plates 11a to 11d, and the corner plates 13a and 13b are partitioned, and two side plates 11a facing each other among the four side plates 11a to 11d, A second step of forming a pair of folding lines 24 obliquely extending from the vertex 23 where the bottom plate 10 and the side plates 11a and 11c meet on both sides of 11c) to the top of the side plates 11a and 11c;
The side plates 11a to 11d are folded and erected using the first bending lines 16a to 16d, and the edge plates 13a and 13b are folded in two layers using the second bending lines 17a to 17c. A third step of bonding the inner surfaces of the abutting edge plates 13a and 13b;
A fourth step of folding the edge plates 13a and 13b joined in two layers by using the second bending lines 17a and 17c overlapping each other and joining them to the outer surfaces of the side plates 11a to 11d;
When storing and transporting, fold the four side plates (11a-11d) inward using the folding line (24) and fold them flat toward the bottom plate (10), or when using a container, the cover plate of the cover plate (12). A fifth step of closing the inside of the container with the cover plate 12 by folding the bent line 27;
Disposable cooking container manufacturing method comprising a.
The method of claim 10,
The original plate 15 is coated with a PP resin (polypropylene resin) on the inner surface, and therefore, bonding is performed using the adhesive strength of the PP resin melted by heat fusion during bonding in the 3rd and 4th steps. Disposable cooking container manufacturing method, characterized in that.

Images