JP2010089810A - Paper-made container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper-made container with the heat insulating effect which forms a so-called bowl-shaped container of paper, and is easily formed at low cost, and is usable as a container for food using liquid, for example, instant noodle. <P>SOLUTION: The paper-made container comprises an inner container 1A which is formed by winding a substantially fan-shaped paper-made sheet 1 having cutouts cut-expanding in a substantially triangular shape in the direction of a short arc side part with an arbitrary position of the sheet as an apex around a forming core of a substantially bowl shape while cutout side parts constituting the respective triangular cutouts are brought into contact with each other or partly overlapped each other in a substantially bowl shape having a pinched shape in the direction of the bottom part, and an outer paper-made container 2A pressure-formed of one paper-made sheet by a male die and a female die in a substantially bowl shape. The outer paper-made container is located in the inner paper-made container to constitute one container. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a paper container related to a heat insulating container having various heat insulating structures such as foamed resin and paper, and is made of paper in place of a heat insulating container such as a bowl-shaped foamed resin such as instant noodles. The present invention relates to a container capable of insulating and preventing liquid leakage.

Conventionally, a container is formed in a bowl shape such as instant noodles using a polystyrene resin foam sheet or the like, and this is often used as a heat insulating container.
In this case, for example, a container is formed using a polystyrene resin-based foam sheet as described above in order to form the peripheral shape of the container neatly, to enhance heat insulation, and to facilitate moldability. It is.

For example, JP-A-10-16025 (Patent Document 1), JP-A 2000-95888 (Patent Document 2), and JP-A-2001-161534 (Patent Document 3).
Alternatively, there are JP-A-8-207051 (Patent Document 4) and JP-A-2003-26143 (Patent Document 5) as paper containers for putting instant noodles and liquids with paper.

In place of these, Japanese Patent Application Laid-Open No. 2006-341911 (Patent Document 6) exists in which a container having a substantially bowl shape such as a so-called bowl is formed of paper.
Furthermore, as a heat insulation container comprised with paper, there exist Unexamined-Japanese-Patent No. 11-348966 (patent document 7) and Unexamined-Japanese-Patent No. 2000-43955 (patent document 8), for example.
JP-A-10-16025 JP 2000-95888 A JP 2001-161534 A JP-A-8-207051 JP 2003-26143 A JP 2006-341911 A JP-A-11-348966 JP 2000-43955 A

As described above, heat-insulated containers such as imperial noodles using a polystyrene resin-based foam sheet, etc., use foam sheets, and because they can not only use heat-insulating outer walls, but also are made of resin. It is easy to mold and can be formed with a clean outer peripheral shape.
However, since it is made of resin, it has a drawback that the plasticizer may flow out into hot water.
In addition, special treatment is required after sorting.

Furthermore, it is a petroleum product, and may be depleted in the future, and there is a possibility that the oil price may fluctuate due to various situations. It is unstable in terms of stable supply at a low price.
In recent years, however, conversion to paper products is inevitably required, and a container that can be manufactured using paper is desired.
In this case, Patent Document 4 and Patent Document 5 described above exist as paper containers, but these are formed of a so-called cup-shaped outer shape in the shape of a truncated cone.

In contrast to this, unlike the shape of a heat-insulating container such as a bowl-shaped instant noodle using the polystyrene resin foam sheet or the like, which is widely used at present, it is a container having a shape different from a so-called bowl type.
On the other hand, there is also a bowl-shaped container shown in Patent Document 6.
However, this is press molding, and particularly, press molding is performed after scoring.
Therefore, not only has an extremely complicated process, but also requires sophisticated and precise equipment.

Further, since deep drawing press molding, wrinkles are inevitably generated even if scoring processing is performed in a portion where the drawing is tight, and it is difficult to achieve clean molding.
Furthermore, because of the scoring formation, an extremely large number of scratches are made on the outer surface.
Accordingly, this configuration also has drawbacks in various respects such as removal of wrinkles, securing the shape retention of the container, and prevention of breakage of the container.
In particular, the cost is high due to the necessity of extremely sophisticated and strict scoring processing, and some solution is required.

Next, Patent Document 7 is a paper container that is useful in that it can maintain heat insulation.
However, in this configuration, it is necessary to fold the polygonal shape to form an outer container and an inner container, fold each into a container configuration, then combine them, and assemble each one by hand It is not at all suitable for mass production.
Further, each of them is folded by a corner, and for example, a bowl shape cannot be formed.

Furthermore, similarly to Patent Document 8, it is a paper heat insulating container, and the appearance upper and lower parts are so-called bowl shape, but the inner container is a truncated cone shape and not a bowl shape. It is.
Further, the outer exterior portion is narrowed by heating and pressing at the lower portion thereof.
Therefore, when the pressure is applied as it is, the paper is paper, so that a large number of wrinkles enter and the shape looks bad.

In this case, creases are reduced by placing a ruled line at the bottom.For example, the crease can be easily generated along the ruled line only by inserting the crease, but the crease itself can be eliminated. Deep wrinkles are inevitably generated, and if the aperture is tightened, wrinkles cannot be eliminated with a ruled line.
Accordingly, it is desired to provide a simple bowl-shaped paper container that can be molded more easily and without cost, and in particular, an insulated container that can be formed with a paper container is provided. Is an issue.

  Therefore, the invention according to claim 1 according to the present invention is characterized in that the sheet having a notch that is cut and spread in a substantially triangular shape toward a short arc side with an arbitrary position of the substantially fan-shaped paper sheet as an apex. A bowl shape that is rolled up into a cored bar having a bowl shape and is formed in such a manner that the notch sides of each triangle are in contact with each other or partly overlapped to form a bottom direction. An inner paper container made of a substantially bowl shape, and an outer paper container made of a bowl-like shape made by pressing a single paper sheet with a male mold and a female mold, It consists of a paper container in which the outer paper container is positioned on the inner paper container to constitute one container, and the above-mentioned problems can be solved by such an invention.

The invention according to claim 2 is a paper container in which any one or both of a paper sheet and a paper sheet are a multilayer sheet of a paper sheet and a thermoplastic sheet. Good.
Furthermore, the invention according to claim 3 is that the paper sheet of the inner paper container and the paper sheet of the paper container are fused with the respective thermoplastic sheets, and the outer paper is attached to the inner paper container. The container is made of a paper container that is fused to form a single container, and the same applies to such a container.

Alternatively, as in the invention according to claim 4, one container may be configured by adhering the paper sheet of the inner paper container and the paper sheet of the paper container with an adhesive member, As in the invention according to claim 5, the paper sheet of the inner paper container located at the opening and the paper sheet of the paper container are integrated by rounding or folding the peripheral sheets together. In this case, one container may be formed by forming an opening peripheral edge.
Further, as in the invention according to claim 6, the paper sheet may be a circular sheet.

In addition to these, a paper container having an exterior body outside the outer paper container may be used as in the invention according to claim 7.
Further, as in the invention according to claim 8, the surface of the outer paper container having a substantially bowl shape formed by pressure-molding one paper sheet with a male mold and a female mold is formed on the surface of the outer paper container. And has a folding thickness of an air layer and / or a sheet between the inner paper container and the inner paper container by the folds or creases, and insulates between the inside of the inner paper container and the outer surface of the paper container It may be a paper container.

In addition, when a single paper sheet is pressure-formed by a male mold and a female mold as in the invention according to claim 9, a paper container with a hook is formed using a male mold and a female mold having an uneven surface. A paper container that is molded and used with the paper container with the hook, or a paper container in which the paper container with the hook is folded again after forming the paper container with the hook as in the invention according to claim 10 is used. The same applies to paper containers.
Further, as in the invention according to claim 11, a paper container is provided between the inner paper container and the exterior body, and the folded thickness of the air layer and / or the sheet is formed by the paper container, The paper container which heat-insulates between the inside of a paper container and the outer surface of an exterior body may be sufficient.

Alternatively, as in the invention according to claim 12, the exterior body is constituted by a multilayer sheet of a paper sheet and a thermoplastic sheet, and at least the paper sheet of the inner paper container and / or the paper sheet of the paper container and the heat You may use the paper container which comprised the exterior body by fuse | melting with a plastic sheet and comprised the one container.
Further, as in the invention according to claim 13, the exterior body is bonded to at least the paper sheet of the inner paper container and / or the paper sheet of the paper container with an adhesive member to constitute one container. It may be a paper container.

Alternatively, as in the invention according to claim 14, the paper sheet of the inner paper container located in the opening and / or the paper sheet of the paper container and the sheet of the exterior body are put together in the peripheral portion. It may be a paper container that constitutes one container by rounding or folding and integrating to form an opening peripheral edge.
In addition to these, as in the invention according to claim 15, a paper container using a paper container positioned inside as an exterior body may be used.

As described above, according to the first aspect of the present invention, a so-called bowl-shaped container can be formed with paper, and a container that is extremely easy to use is provided for resource protection, recycling, or sorting. And the molding can be performed very easily.
Furthermore, a heat insulating effect can be exhibited by the outer paper container.

Next, according to the second and third aspects of the invention, although it is a paper container, it can be thermally welded using a thermoplastic sheet, and a container with extremely high moldability and easy molding can be provided.
Further, according to the invention of claim 4, the inner container and the outer container can be integrally formed by using various adhesive members including starch paste. According to the invention which concerns on Claim 5, it can comprise as an integral container by shaping | molding.

According to the sixth aspect of the present invention, the outer paper container can be easily formed into a bowl-shaped substantially bowl shape.
Furthermore, according to the invention concerning Claim 7, mounting | wearing of an exterior body is also possible, and according to the invention concerning Claim 8, the heat insulation effect can be exhibited by the outside paper container.
Further, according to the invention of claim 9, it is possible to form a ridge on the outer paper container, and it is possible to exhibit the well thermal insulation properties as necessary.

Alternatively, according to the invention of claim 10, it is possible to provide an outer paper container according to each application by changing the shape of the ridge, that is, the state of the ridge.
According to the eleventh aspect of the invention, the outer paper container can be efficiently used as a heat insulating layer between the outer body and the inner paper container by using the outer body.
Moreover, according to the invention which concerns on Claim 12 thru | or 14, mounting | wearing of an exterior body can be performed exactly.
Furthermore, according to the invention which concerns on Claim 15, an inner container can be used efficiently as an exterior body.

    FIG. 1 is a diagram showing an example of a paper container according to the present invention, and first approximates the shape of a heat-insulating container such as a bowl-shaped instant noodle using a polystyrene resin-based foam sheet or the like that is commonly used. The upper edge is a wide edge that approximates the shape of a so-called bowl-shaped container, and the opening diameter is slightly narrowed to the center of the container. It is a figure which shows an example of a paper-made container from the shape which shaped the bowl-shaped container which is the substantially bowl shape comprised narrowly.

First, a substantially fan-shaped paper sheet 1 having a large number of notches in the direction of the short arc side portion 11 is wound inside the container with a substantially bowl-shaped mold, etc. A paper container 1A that is shaped as a shape that is substantially shaped like a bowl is located.
In particular, the outer surface is formed with a clean curved surface configuration.

Next, a paper container 2A is formed on the outer periphery of the container 1A. The paper container 2A is formed by forming a circular sheet 2 into a substantially bowl shape, which is a substantially bowl shape by press molding.
Accordingly, a substantially bowl-like shape which is a substantially bowl shape formed by winding and forming the sheet 1 having a large number of notches in the direction of the short arc side 11 in a paper container 2A formed by press-molding the paper sheet 2. A paper container 1A shaped like this is accommodated to form one paper container.
This is because liquid leakage from a position where a large number of notched side portions 12 of a paper container 1A formed by winding the sheet 1 having a large number of notched portions in contact with each other or in contact with each other is externally exposed. It can be prevented by the outer paper-made container 2A formed by press molding located in the position.

  In the first place, in the paper container 1A located inside, when the sheet 1 having a large number of notches is wound and the sheet 1 is wound around a die having a substantially bowl shape, each triangle of the portion of the sheet base is provided. The notch sides 12 constituting the notch are in contact with each other or partly overlapped with each other, and can be formed into a shape with a reduced shape in the bottom direction. Although it can be molded and liquid leakage can be prevented by adhering or welding the portions where the cut-out side portions 12 are in contact with each other or partially overlapping, one sheet 2 for preventing liquid leakage more reliably. By further disposing the outer container 2A formed from a paper sheet having no seams, it is possible to provide a paper container that can surely prevent liquid leakage.

  In this case, the outer liquid leakage prevention container 2A is only required to be formed from a single sheet of paper 2. For example, as described above, the container 2A is not limited to being formed by press molding. It may be formed by what is formed by, or what is formed by being wound around a rotating roll.

FIG. 2 shows a substantially fan-shaped paper sheet 1 having a large number of notches in the direction of the short arc side portion 11 as described above. The shape of the paper container 1A formed in the shape of the approximate bowl shape is a shape that has the shape of the approximate bowl shape by press molding or the like with the center portion of the paper container 2 as a bottom. An example is shown in which one paper container is formed by overlapping the formed paper container 2A and bonding them together with an adhesive member such as starch paste.
By molding in this way, the inner container 1A and the outer container 2A can be used without spilling, for example, liquid to be put inside.

For example, a paper container can be used as a container for instant noodles.
In this case, for example, since the outer container 2A is formed in a substantially bowl shape with a single sheet 2, the outer peripheral surface has creases, wrinkles, etc., which is a design value. In addition to this, the heat insulation effect can be further enhanced by the gaps and overlapping portions of this portion.
Therefore, it can be used as a paper container having a heat insulating effect as a food container using hot water such as instant noodles.

  The outer container 2A and the inner container 1A are each made of a multi-layer sheet in which a paper sheet is laminated with a thermoplastic sheet or the like, and these are formed into one container by heat fusion or ultrasonic fusion. Although not shown in this figure, as an integrated container by forming both the sheet bases of the peripheral part of the container located in the opening by rounding or folding together to form an integrated opening peripheral part You may shape | mold.

Next, FIG. 3 is a figure which shows an example of the manufacturing process of 1 A of paper containers located inside the paper container which concerns on such this invention.
The configuration shown in the figure is composed of a substantially fan-shaped paper sheet 1 and a mandrel M which is a cored metal for winding the sheet.
First, the molded cored bar approximates a so-called bowl-shaped container shape that approximates the shape of a heat-insulated container such as a bowl-shaped instant noodle using a polystyrene resin foam sheet that is commonly used. The top edge is a wide edge, and the opening diameter is slightly narrowed to the center of the container by a small amount. It consists of a shaped shape.

The paper sheet 1 placed on the cored bar is further wound around the cored bar, for example, from both sides by arm-shaped flaps or a winding roller, and formed into a container shape.
In this case, the sheet 1 is substantially fan-shaped and has a large number of notches in the direction of the short arc side portion 11.
This notch is a notch that extends in a substantially triangular shape toward the short arc side portion 11 with an arbitrary position of the sheet as a vertex 13, and the notched side portion of the sheet that forms the substantially triangular notch 12 is formed continuously with an acute angle in between.

Accordingly, since this portion is cut off, when the sheet 1 is wound by an arm-shaped flap, the cut-out side portions 12 constituting the cut-out portions of the respective triangular portions of the sheet base portion are It is formed in contact with or partially overlapping, and can be formed in a shape with a reduced shape in the bottom direction.
In this case, it is clearly shown in the drawing as a substantially triangular shape, but the present invention is not limited to this. It may be.
In addition, the long circular arc side part 10 is formed in the arc shape in the structure of this figure.

Further, this notch is an example. For example, the notch side portion 12 may be an arc-shaped side, or may be a side whose angle is arbitrarily changed. Even if it consists of arbitrary positions, the position of the vertex 13 of each notch may be different.
Moreover, the form of this substantially fan-shaped sheet | seat 1 is an example, and what is necessary is just to define the width | variety, height, or the extent of a curve as needed.
Of course, the sheet 1 may be preliminarily printed and further wound around a cored bar to be molded.

In these cases, the paper sheet may be a thin paper sheet or a thick paper sheet.
Furthermore, it is needless to say that a composite sheet using paper or a multilayer sheet may be used.
Therefore, it is composed of at least a paper sheet, but may be a paper sheet laminated with a resin sheet.

FIG. 4 is a view showing an example of a paper container located on the inner side where the substantially fan-shaped paper sheet 1 is wound around a formed cored bar by an arm-shaped flap and wound into a substantially bowl shape.
Thus, the sheet 1 wound around the cored bar is shaped like a substantially bowl-shaped container having a substantially bowl shape, and the sheet constitutes the shape of a paper container, and is particularly The surface can be formed with a clean curved surface configuration.
In this case, the cut-out side portions of the sheet may be formed in close contact with each other or may partially overlap.

In this case, the sheet is wound around the bottom of the cored bar, and the bottom of the container is tightly sealed.
Therefore, the top edge is a wide edge, and the opening diameter is slightly narrowed little by little up to the central part of the container, but a bowl-shaped container having a substantially bowl shape with a sudden narrowing in the vicinity of the bottom part. It has a shaped container shape.
In addition, in the so-called marginal portion 14 of the knitted portion on both sides of the substantially fan-shaped paper sheet 1 in the portion where the cut-out side portions 12 are in contact with each other or partially overlapped, for example, starch paste or various adhesive members, for example, It may be bonded using a thermoplastic resin material.

Alternatively, the substantially fan-shaped paper sheet 1 itself may be a multilayer sheet with paper, laminated with a thermoplastic sheet, or coated with a thermoplastic resin, etc. Good.
What is necessary is just to shape | mold at least to this container shape. For example, a paper sheet 1, that is, a sheet made only of paper, a multilayer sheet using a part of paper, or the like is formed into the shape, and the sheet is bonded or welded with the sheet or bonded with an adhesive member Alternatively, it may be covered with a resin sheet and then formed into the shape.

FIG. 5 is a view showing an example visually recognized from the bottom of the container, and adjacent notch sides 12 constituting a large number of notches of the sheet 1 are in contact with each other or overlap to form a bottom without gaps. To do.
Therefore, the shape of the container is slightly narrowed by a small amount to the center of the container by this notch, and the diameter is suddenly narrowed near the bottom from here to the bottom. It forms a bowl-shaped container that has a clean curved surface and has almost no bowl.

In this case, it is possible to provide a clean container as long as the portions where the adjacent cut-out side portions 12 are in contact with each other or overlap each other are precisely superposed or bonded.
Furthermore, if this portion is bonded or welded with, for example, a resin material or a waterproof adhesive, liquid leakage can be more effectively prevented.

FIG. 6 shows an example in which the adjacent cut-out side portions 12 overlap each other and are superposed 12a.
Thus, by overlapping or adhering or fusing partly, a container can be formed exactly and liquid leakage can be prevented.
In this case, the paper sheet 1 may be formed of a multilayer sheet by lamination with a thermoplastic sheet or the like, or may be coated with a thermoplastic resin or the like and fused.
Of course, it may be bonded to the paper sheet 1 using a starch paste or the like, or may be bonded using an adhesive member.

In addition, a sheet base may be separately provided in the vicinity of the bottom portion of the container, and at least a portion where the notched side portions 12 contact or overlap each other may be covered from the outside or the inside to prevent liquid leakage.
Furthermore, the configurations shown in these figures are based on a so-called semi-circular bowl shape formed by a curved surface having a clean outer periphery, but are not limited thereto, and the outer peripheral surface has a polygonal shape of a triangle or more with a corner. It may be formed in a paper container having a bowl shape, that is, an inverted pyramid shape.
In this case, for example, with respect to the formed core bar, a substantially fan-shaped paper wound around this shape by making the shape into a polygonal shape of a triangle or more with an angle on the peripheral surface, that is, an inverted pyramid shape. The sheet made in the shape of a substantially pyramid-shaped peripheral surface can be formed into a container having the shape of the inverted pyramid-shaped container.
In addition, it becomes a pyramid shape to the center part vicinity of a shaping | molding metal core, Of course, even if it has a corner | angular part in the surrounding surface not only in the structure formed as hemispherical shape in the bottom vicinity of a shaping | molding metal core. This shape is also included in the Ontake shape.
Further, in the configuration of this figure, the marginal portion 14 is also polymerized 14a.

FIG. 7 is a diagram illustrating an example of a manufacturing process of the paper container 2A located outside.
First, as shown in FIG. 7a, a circular paper sheet 2 is sandwiched between a male mold and a female mold, press-molded with a mold as shown in FIG. 7b, and removed from the mold as shown in FIG. The so-called semi-spherical bowl shaped bowl-shaped paper container 2A formed by the above method is formed.
In this case, it is formed with one sheet 2 and has a ridge and a folded portion.
In addition, in this figure, it is a Gyoen shape, but is not limited to this, for example, in accordance with the shape of the container located inside, a pyramid shape in which the shape is a polygonal shape of a triangle or more with an angle on the peripheral surface, that is, an inverted pyramid shape Of course, it is good even if it forms something.

Further, regarding the circular paper sheet 2, the paper container 2 </ b> A may be formed by printing the sheet 2 in advance and molding the sheet 2.
The paper sheet 2 may be a thin paper sheet or a thick paper sheet.
Furthermore, it is needless to say that a composite sheet using paper or a multilayer sheet may be used.
Therefore, it is composed of at least a paper sheet, but may be a paper sheet laminated with a resin sheet.

FIG. 8 shows a paper container 2A with a hook formed by using a male mold and a female mold having a concavo-convex shape on the surface instead of the male mold and the female mold having a clean curved surface shown in FIG. It is a figure which shows an example of the manufacturing process for shape | molding.
As shown in this figure, a paper container 2A with a ridge composed of a single paper sheet 2 can be formed.
In particular, since these sheets 2 can be formed from a single sheet material, they do not leak to the outside even if liquid is put inside.
Therefore, it can be used very effectively as a container for preventing liquid leakage.

Further, the paper container formed according to FIG. 7 or FIG. 8 has a crease, a crease or a crease on its outer surface, and this portion can exhibit a heat insulating effect.
In addition, you may use as the paper container 2A which eliminated the wrinkles through the process which further crushes or folds the wrinkles of the paper container 2A with a wrinkle shape | molded by FIG.
Also by this, the heat insulation effect can be exhibited by the presence of the overlapping portion of the paper sheet 2 by folding the ridge portion.

FIG. 9 is a view showing an example having an exterior body 3A in addition to the inner paper container 1A and the paper outer container 2A for preventing liquid leakage according to the present invention.
First, a substantially fan-shaped paper sheet 1 having a large number of notches in the direction of the short arc side portion 10 is wound inside a container with a substantially bowl-shaped die or the like, 1 A of paper containers shape | molded as the shape which shaped the substantially bowl shape which is a shape are located.
Next, a paper container 2A is formed on the outer periphery of the container 1A. The paper container 2A is formed by forming a circular sheet base 2 into a substantially bowl shape, which is a substantially bowl shape by press molding.

  That is, a substantially bowl shaped bowl having a substantially fan shape formed by rolling a substantially fan-shaped paper sheet 2 having a large number of notches in the direction of the short arc side 10 on the innermost side of the paper container according to the present invention. A paper container shaped like a shape is located, and a paper container shaped like a roughly bowl shape that is a roughly bowl shape is formed by press forming a circular sheet on the outer periphery, and further on the outermost circumference Shows an example of a paper container according to the present invention, which is formed by molding one paper container depending on the state in which the belt-shaped outer package 3A is positioned.

By comprising in this way, the container which uses each effect mentioned above, ie, a paper-made liquid, etc. can be comprised, and a liquid leak can be prevented by the outer press-molded paper-made container 2A. An air layer or a polymerized layer of paper can be formed by unevenness or wrinkles or wrinkles or the like of a press-formed paper container 2A located between the outer package 3A and the inner paper container 1A. And the effect as a heat insulating container can be exhibited extremely high.
Therefore, it can be used as a heat insulating container such as instant noodles or various containers using hot water or the like.
In this case, the strip-shaped exterior body 3A as the exterior body is not limited to a simple strip-shaped body, for example, and may be a special-shaped container-shaped exterior body with a restriction in the bottom direction.

FIG. 10 is a view showing another example of the paper container according to the present invention in which each of the paper containers is mounted tightly to form a heat-insulating paper container such as instant noodles.
As shown in this figure, it can be molded very neatly and easily.
In particular, they are all made of paper, are extremely effective containers for nature conservation or environmental protection, and can reduce the manufacturing cost and the manufacturing effort as much as possible.

FIG. 11 is a view showing a configuration example of a paper container according to another embodiment of the present invention, and is an abbreviation having a large number of notches in the direction of the short arc side portion 11 in the outer peripheral portion instead of the exterior body 3A shown in FIG. It is a figure which shows an example comprised with the container which attached the pedestal 17 to the paper container 3A (1A) of the shape which shaped the substantially bowl shape which is the substantially bowl shape formed by rolling up the fan-shaped paper sheet | seat 1. FIG.
Also with this configuration, it is possible to provide a paper container having the same effect as described above.

FIG. 12 is a diagram illustrating an example of a state in which the configuration illustrated in FIG. 11 is all properly mounted as one container.
In order to configure as shown in this figure, it is not limited to the one formed by bonding with, for example, starch paste, etc., but it can be bonded using another bonding member, or a paper sheet can be formed as a multilayer sheet such as a resin sheet. These may be formed in this configuration by heat welding or ultrasonic welding.
Alternatively, it may of course be formed integrally by being folded or rolled up at an arbitrary position.

  Next, FIG. 13 is a schematic view formed by rolling a substantially fan-shaped paper sheet 1 having a number of notches in the direction of the short arc side portion 11 at the innermost side of the paper container according to the present invention. A paper container 1A having a shape substantially shaped like a bowl is positioned, and a paper container shaped like a substantially bowl shape, which is a substantially bowl shape, is formed by press-molding a circular sheet material 2 on the outer periphery thereof. 2A is a diagram showing an example of a state in which an air layer is formed in a container by positioning a strip-shaped outer package 3A or another paper container on the outermost periphery.

In the configuration of this figure, an example is shown in which a paper container shaped like a substantially bowl shape, which is a substantially bowl shape, is formed by punching a circular sheet base 2 with a ridge.
As shown in the figure, since the air layer can be formed completely over the entire surface by means of scissors or the like, the heat insulating effect can be enhanced by the air layer.

FIG. 14 shows a case where a paper container 2A having a substantially bowl shape, which is a substantially bowl shape formed by press molding of a circular sheet 2 when the ridge is further crushed or formed, is used. It is a figure which shows an example.
An air layer is also formed by such a configuration, or each paper sheet is positioned in a multilayer state within the interval and has a folding thickness, so that this part also has a sufficient heat insulating effect Can be demonstrated.

The figure which shows an example of the paper container concerning this invention The figure which shows an example of the paper container concerning this invention The figure which shows an example of the manufacturing process of the paper container which concerns on this invention The figure which shows an example of the paper containers based on this invention The figure which shows the state which visually recognized the bottom part of an example of the paper containers based on this invention. The figure which shows the state which visually recognized the bottom part of other examples of the paper containers concerning this invention. The figure which shows an example of the manufacturing process which manufactures the paper container which concerns on this invention by press molding The figure which shows another example of the manufacturing process which manufactures the paper container which concerns on this invention by press molding The figure which shows another example of the paper container concerning this invention The figure which shows another example of the paper container concerning this invention The figure which shows another example of the paper container concerning this invention The figure which shows another example of the paper container concerning this invention The figure which shows an example of the heat insulation structure of the paper container which concerns on this invention The figure which shows another example of the heat insulation structure of the paper container which concerns on this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Substantially fan-shaped paper sheet 1A Paper container 10 formed from substantially fan-shaped paper sheet 10 Long arc side part 11 Short arc side part 12 Notch side part 13 Vertex 14 Margin part 15 Sheet base 16 Sheet base 17 Height 2 Circular Sheet 2A Paper Container Formed from Circular Paper Sheet 3 Sheet 3A Exterior Body M Molded Core (Mandrel)

Claims (15)

A cored bar made of a substantially bowl-shaped sheet having a notch that is cut into a substantially triangular shape with an arbitrary position of a substantially fan-shaped paper sheet 1 as an apex 13 toward the short arc side 11. An inner sheet of paper having a substantially bowl-like shape that winds around M and is formed by touching or partially overlapping the cut-out side portions 12 that form the cut-out portions of the respective triangles to reduce the shape in the bottom direction. A container 1A,
An outer paper container 2A having a substantially bowl-like shape in which a single paper sheet 2 is pressure-formed by a male mold and a female mold,
1. A paper container characterized in that an outer paper container 2A is positioned on the inner paper container 1A to form one container. 2. The paper container according to claim 1, wherein either or both of the paper sheet 1 and the paper sheet 2 are formed of a multilayer sheet of a paper sheet and a thermoplastic sheet. The outer paper container 1A is bonded to the inner paper container 1A by fusing the paper sheet 1 of the inner paper container 1A and the paper sheet 2 of the outer paper container 2A with respective thermoplastic sheets. The paper container according to claim 2, wherein one container is formed by fusing with 2 A positioned. 4. The paper container 1 of the inner paper container 1A and the paper sheet 2 of the outer paper container 2A are bonded with an adhesive member to form one container. Crab paper container. The paper sheet 1 of the inner paper container 1A located at the opening and the paper sheet 2 of the outer paper container 2A are integrated by rounding or folding the two sheets of the peripheral edge together. The paper container according to any one of 1 to 4, wherein one container is formed by forming 6. The paper container according to any one of 1 to 5, wherein the paper sheet 2 is a circular sheet. 7. The paper container according to any one of 1 to 6, which has an outer package 3A outside the outer paper container 2A. A surface of the outer paper container 2A having a substantially bowl shape formed by pressure-molding a single sheet of paper 2 with a male mold and a female mold has a ridge or crease, and the ridge or crease has an inner side. It has an air layer and / or sheet folding thickness between the inner paper container 1A and heat insulation between the inside of the inner paper container 1A and the outer surface of the outer paper container 2A. 8. A paper container according to any one of 1 to 7. When a single paper sheet 2 is pressure-molded by a male mold and a female mold, a paper container 2A with a ridge is formed using a male mold and a female mold having a concavo-convex shape on the surface. The paper container according to any one of claims 1 to 8, wherein the container 2A is used. The paper container 2A according to claim 9, wherein the paper container 2A obtained by forming the paper container 2A with a hook and then folding the bag again is used. A paper container 2A is provided between the inner paper container 1A and the exterior body 3A, and the folded thickness of the air layer and / or the sheet is formed by the paper container 2A, and the inside of the inner paper container 1A The paper container according to any one of claims 7 to 10, wherein the paper container is insulated from the outer surface of the outer package 3A. The outer package 3A is composed of a multilayer sheet of a paper sheet and a thermoplastic sheet, and is composed of at least a paper sheet 1 in the inner paper container 1A and / or a paper sheet 2 and a thermoplastic sheet in the outer paper container 2A. The paper container according to any one of claims 7 to 11, wherein a single container is formed by fusing the exterior body by fusing. The exterior body 3A is bonded to at least the paper sheet 1 of the inner paper container 1A and / or the paper sheet 2 of the outer paper container 2A with an adhesive member to constitute one container. The paper container according to any one of claims 7 to 11. The paper sheet 1 of the inner paper container 1A located at the opening and / or the paper sheet 2 of the outer paper container 2A and the sheet of the exterior body 3A are rolled up together at the peripheral edge or 14. The paper container according to any one of 7 to 13, wherein one container is configured by folding and integrating to form an opening peripheral edge. The paper container according to any one of claims 7 to 13, wherein a paper container 1A located inside is used as the exterior body 3A.

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