JP3028224B1 - Paper insulation container and method of manufacturing the same - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To use a paper obtained from a natural resource as a heat insulating container material, thereby preventing garbage pollution and harmful effects of environmental hormones, and improving a heat insulating effect to provide a good-looking lower-thin cup. SOLUTION: Two protruding pieces 1A serving as tabs are protruded from one side of a square tough base paper 1 and opposing sides 1a orthogonal to the one side of the base paper 1 are stuck together at a joint 1B to make paper. A plurality of parallel vertical folds 3 and 3 are formed by making the cylinder 2 and folding the cylinder 2 flat at a position where the protruding pieces 1A approach each other and passing the pair of crease rollers R and R from the fold side 2a. The bellows forming paper 4 having the following shape is formed, and the mating surfaces are separated from the protruding piece 1A serving as the above-mentioned margin, and are rounded into a cylindrical shape to form a bellows cylinder 5. The paper cup 6 is forcibly fitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper-made heat-insulating container suitable for storing heated processed dry foods or insulated foods in a cup and allowing the user to just pour boiling water into the cup, and to manufacture the same. About the method.

[0002]

2. Description of the Related Art Conventionally, as this kind of heat insulating container, a heat insulating container molded from a foamed resin such as styrene foam is mainly used. Has recently been found to be toxic, and since the foamed resin does not rot,
A large amount of waste could not be discarded as it was, and high heat was generated when the used containers were incinerated, which shortened the life of the furnace and generated harmful gases and increased bulk, which was troublesome and troublesome for waste disposal.

As other heat insulating containers, there are those conventionally described, for example, in Japanese Utility Model Application Laid-Open No. 56-94713 and Japanese Patent Application Laid-Open No. 50-36284. This conventional technique has an extremely small taper, and has a cylindrical mantle body having a large-diameter end formed with an outwardly curved flange at its large-diameter end, and a taper that is larger than the taper. The outer diameter of the large-diameter side end is equal to the inner diameter of the large-diameter side end of the mantle body, and is curved outward at the large-diameter side end to form a concentric flange with the flange. And a flanged lid fitted to the flange of the container.

In this prior art, since the upper inner peripheral surface of the outer jacket is in direct surface contact with the upper outer peripheral surface of the container, the heat of the food in the inner container is placed on the upper portion of the outer jacket. In the case of hot food such as instant noodles with hot water poured into the food in the thickness direction, the fingers holding the upper part of the jacket will suddenly become hot and cause burns or prevent finger burns. Therefore, there is a problem that hot food or boiling water may be dropped together with the inner container by releasing the hand from the mantle.

In addition to these conventional examples, as shown in FIG. 7, a number of parallel fold lines 11 are formed on long paper 10 to be creased by a well-known crease gear roller as shown in FIG. After obtaining a triangular corrugated plate-shaped bellows paper 12, the bellows paper 12 is punched into a fan-shaped bellows paper 13 as shown in FIG. As shown in FIG. 9, the sides are superimposed on each other to form a lower thin bellows tube 14.
A heat insulating container adhered to the outer peripheral surface of a paper cup while making the same is also conventionally known (see Japanese Utility Model Laid-Open No. 4-45216).

[0006]

However, this conventional example has an advantage that one kind of creaser can cope with many kinds of paper cups, but after winding the paper cup, FIG.
As shown in the figure, the left and right fold lines 11 of the joint portion 14A are V-shaped, and the uneven ridges are opposed to each other. If not printed, the arrowhead joint 14
There are a number of problems that the image is discontinuous on the left and right sides of A and that it is cumbersome and troublesome in terms of print display technology.

[0007] In order to solve these problems, in order to make a fan-shaped bellows paper along the outer periphery of a paper cup, it is also possible to form a long fan-shaped base paper with a number of radial fold lines extending from its virtual center line. However, in this case, many types of fan-shaped base paper and a pair of elongated bevel gear-shaped gear rolls for radial creases are required, depending on the size of the paper cup and the number of taper types. In addition, the work management is troublesome, and there are inherent problems that it requires a large number of fan-shaped bellows as many as the number of paper cups, and is extremely complicated to store and sort. In addition, as disclosed in Japanese Patent Application Laid-Open No. 50-30675, an example in which a metal foil or a paper cylinder is passed between openable and foldable folding rollers to form a bellows cylinder, and a paper cup is forcibly fitted into the cylinder. There is also.

However, in this conventional example, a cylindrical body made of paper, a plastic thin plate, an aluminum foil, or the like is inserted one by one into one roller of a pair of contact-separable creasing rollers, and then the other roller is connected to the above-mentioned roller. By rotating each roller while pressing tightly against the outer peripheral surface of the cylindrical body, after making a number of parallel folds on the cylindrical body, release the rollers and remove the cylindrical body from the rollers to make a product. Each time the shape is creased one by one, it is necessary to open and close the crease roller pair to insert and remove the cylindrical body, which is troublesome, complicated, extremely troublesome, and poor in workability. However, there is an essential problem of high cost and uneconomic.

The present invention has been made in order to eliminate the above-mentioned many problems, and an object of the present invention is to use paper obtained from natural resources as a heat insulating container material, thereby reducing garbage pollution. In addition to preventing poisons caused by environmental hormones, eliminating heat conduction that is transmitted directly in the thickness direction of the heat-insulating outer cylinder, it enhances the heat-insulating effect and improves the appearance by aligning the folds and projections at the joints of the bellows cylinder. And
The printed pattern also makes it easier for the left and right joints to be continuous, and the two bellows forming papers are provided with two protruding pieces that serve as knobs for separation in advance, making it easier to make a paper bellows cylinder,
One object of the present invention is to make it possible to use one kind of bellows cylinder with a plurality of kinds of lower cups with good compatibility.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to form a heat-insulating container in which a paper cup is covered with an outer cylinder by projecting two protruding pieces serving as pick margins on one side of a square tough base paper. At the same time, the opposite sides orthogonal to the one side of the base paper are attached at a joint portion to form a paper cylinder, and this cylinder is folded flat at a place where the protruding pieces approach each other, and a pair of creases is formed from the folded side By passing between rollers, a two-piece bellows forming paper having a number of parallel vertical folds is made, and the mating faces are separated from the protrusions serving as the above-mentioned margins and rolled into a cylindrical shape to make a bellows cylinder. By forcibly fitting the paper cup inside the cylinder against its shape-retaining elasticity, the bellows cylinder was substantially adapted to the outer peripheral surface shape of the paper cup, and this was achieved by covering the paper cup as a lower thin bellows paper cylinder. .

Also, the short sides of the long strip of paper are joined together to form a long paper cylinder, and this is cut into small pieces by a cutter blade with a partial recess for each required dimension, and the upper or lower side is cut. Then, a paper cylinder having the two protrusions may be obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a basic embodiment of the present invention will be described with reference to FIGS. 1 (a) to 1 (g).
In manufacturing a heat insulating container in which an outer cylinder is covered on a tough paper cup with an upper spread, two protruding pieces 1A serving as pick margins are protruded on one side of a tough base paper 1 such as a square thick western paper, and the base paper 1 The opposing sides 1a orthogonal to the one side are joined to each other at a joint 1B.
As shown in FIG. 1 (a), an envelope is attached (or attached to the palm) to form a paper cylinder 2, and the cylinder 2 is folded flat as shown in FIG. 1 (b). As shown in (c), a continuous triangular (or square) formed by a number of vertical folds 3 and 3 parallel to the folded side 2a by passing between the parallel fold forming rollers R and R formed of a well-known pair of gear rollers. As shown in FIG. 1 (d), a pair of bellows forming papers 4 having two corrugated projections 1A close to each other and having a wave front are prepared.

Next, in order to separate the two bellows forming papers 4 from their mating surfaces, the two protruding pieces 1A, which have been used as picking margins, are separated by picking and moving with fingers or a robot arm. As shown in FIG. 1 (e), the bellows cylinder 5 is rolled into a cylindrical shape to form the bellows cylinder 5 in which the folds 3 and 3 are continuous at the joint 1B.
1 (f), the paper cup 6 is forcibly fitted as shown in FIG. 1 (g) from the lower part thereof as shown in FIG. 1 (f) while slightly expanding the diameter as shown in FIG. 1 (f).

Thereafter, the bellows cylinder 5 returns to its reduced diameter due to the restoring elasticity of the plurality of vertical folds 3 and 3, and as a result, the bellows cylinder 5 continues to the outer peripheral surface shape of the paper cup 6 as shown in FIG. The triangular mountain-shaped vertical folds 3 and 3 can be almost conformed to each other, and the paper-insulated container according to the present invention is manufactured by covering the paper cup 6 as a lower thin vertical bellows paper cylinder 5A as shown in FIGS. I was able to.

When the flat paper cylinder 2 is creased, the crease rollers R, R can be used to fold even the paper-thick portion corresponding to two joints 1A. The outer edge 6a may be formed by curling the opening edge of the paper cup 6 outward as shown in FIG. 2, and the bellows cylinder 5 may be placed on the paper cup 6 up to the outer flange. In the state, two protruding pieces 1A
Is pressed by the outer flange 6a and bent downward as shown in FIG.
Further, the vertical bellows paper cylinder 5A may be partially spotted and adhered to the outer peripheral surface of the paper cup 6.

Since the heat-insulated container of the present invention thus formed is spread upward, many of the heat-insulated containers can be polymerized and accumulated without being bulky, and can be efficiently transported from the manufacturer to the food manufacturer. After putting the cooked dried food and other things (not shown), a lid plate is airtightly adhered to the upper edge of the paper cup 6 and shipped.

The purchaser partially peels off the lid plate from the paper cup 6, pours hot water into the instant food in the cup, closes the lid, waits for about 3 minutes, and eats. Even if you eat by holding the paper cylinder 5A by hand, the heat emitted from the paper cup 6
As shown in FIGS. 2 to 4, the oblique side 3C of the bellows-shaped paper cylinder 5A between the valley line 3A and the ridge line 3B of the plurality of vertical folds 3, 3 can be cut off, and the thickness direction of the paper of the paper cylinder 5A can be reduced. Can be prevented from conducting heat directly to the bellows paper cylinder 5
A does not become hot, and the user can eat the food in the paper cup 6 while holding the paper cylinder 5A with his / her hand.

Since the used container is made of paper, which is a natural material as a whole, it is easy to dispose of garbage, there is no harmful effect of environmental hormones, and the bellows cylinder 5 is made of thick tough paper.
Even if you hold the bellows paper cylinder 5A over the hand strongly by hand,
B and the hypotenuse 3C are not crushed, and even a container that is considerably heavy with liquid can be carried with confidence.

The paper cylinder 2 according to the present invention can be obtained by sequentially cutting a long paper 10 as shown in FIG. 5 at predetermined intervals in the width direction thereof.
As shown in FIG. 6, two protruding pieces 1 </ b> A are projected from one side of the base paper 1 serving as an upper side or a lower side of the paper cylinder 2 in advance.
On the other side, a notch 1C which is a cutout mark of the protruding piece 1A
By forming a cutting line L shown in FIG.

Further, a "hit" mark m is formed on the surface of the base paper 1 which is the inner surface of the paper cylinder 2 by using large characters or large symbols.
By notation such as printing at the rate of 1-2 sheets for 00 sheets,
The final user of the instantly heated food or the like may use a method such as "XX hot spring invitation" for the work of separating the two protruding pieces 1A serving as the above-mentioned margins from the joint surface of the two-piece bellows forming paper 4 with fingers or the like. By giving such a prize, a kind of ambitious thrill can be given, and the end user can have a competitive edge in the work of making the bellows cylinder 5 from the bellows forming paper 4, thereby increasing the purchase motivation. It can also be done.

Further, the aspect ratio of the heat insulating container according to the present invention can be arbitrarily selected. However, the heat insulating container may be a flattened or vertically long heat insulating container as compared with the previous example. When fixing inseparably by spot bonding or the like, for example, a heat-adhesive synthetic resin layer such as a polyethylene coat layer (a so-called poly coat layer) is provided on the inner surface of the bellows cylinder 5 or on the outer surface of the paper cup 6. If the attached paper is used, the bellows paper cylinder 5A can be spotted and adhered only by partially heating and pressing the bellows paper cylinder 5A against the paper cup 6.

The inner surface of the paper cup 6 may be coated with the above-mentioned polycoat layer or polylaminate layer.
A is extended below the bottom of the paper cup 6 so that the paper cylinder 5A
By curling the periphery of the lower edge of the bellows paper cylinder 5A, the lower part of the bellows paper cylinder 5A can be reinforced. Further, the outer flange 6a of the paper cup 6 may be curled by a well-known curling machine. It may be a flat flange slightly extended in the lateral direction. Furthermore, the short sides of the strip-shaped long paper 10 are joined to each other to form a long paper cylinder, and this is cut into small portions with a cutter blade having a partial recess according to the required size, and the above is cut on the upper side or the lower side. FIG. 1 (a) having two projecting pieces 1A
May be obtained.

[0023]

The present invention adopts the above-described embodiment, and has the following effects. According to the first and fourth aspects of the present invention, since paper made of natural resources is used as each component of the heat insulating container, garbage pollution is eliminated, and adverse effects on living organisms due to the generation of environmental hormones are eliminated. In particular, the bellows cylinder for heat insulation 5 of the present invention can be obtained by simply passing the flattened paper cylinder 2 straight between the fixed installation type creasing rollers R, R having the same diameter and the same number of teeth in the length direction. The bellows cylinder 5 can be easily formed without the need for opening and closing rollers, and can be adapted to the lower thin outer shape of the paper cup 6, and has a number of beautiful uniform vertical folds 3,3. Tube 5A is easy and
There is an industrial effect that it can be obtained at low cost.

Further, according to the above two inventions, in manufacturing a heat insulating container in which a paper cup is covered with an outer cylinder, the opposite sides of the base paper are adhered to each other at a joint 1B to form a paper cylinder 2, and this cylinder is formed. 2 is folded flat and passed between the crease rollers R, R forming a pair from the crease side 2a, so that two protruding pieces 1A serving as knob margins on the upper side and a plurality of parallel vertical creases 3, 3 are provided. After the bellows forming paper 4 was made, the mating surfaces were separated from the protruding piece 1A, which was the above-mentioned knob, and rolled into a cylindrical shape to make the bellows cylinder 5, so that the two bellows forming papers 4 were used. There is also a second effect that it is easy to form a tube.

Further, the lower thin paper cup 6 is forcibly fitted into the bellows cylinder 5 against its shape-retaining elasticity, so that the bellows cylinder 5 is substantially adapted to the outer peripheral surface shape of the paper cup. Since the bellows paper cylinder 5A was placed over the paper cup 6,
Even if the cup 6 and the paper cylinder 5A are not bonded, the lower thin bellows cylinder 5A is frictionally engaged with the upper peripheral surface of the cup 6 due to its inherent elasticity. The present invention also has a third effect that the present invention can eliminate the need for bonding the cup and the heat insulating cover, which was required in the prior art, all at once.

Furthermore, according to the present invention, the paper cup 6
The inner bellows cylinder 5, which is slightly smaller than the inner bellows cylinder, is forcibly fitted into the tapered paper cup 6 from the lower thin direction, and is covered with the paper cup 6 as a lower thin bellows paper cylinder 5A. Can be covered with a plurality of types of paper cups 6 having slightly different sizes and tapers with good compatibility, and since the bellows cylinder 5 is flexible, besides the circular cup of the previous example, for example, a square cup, a drum-shaped cup, or a drum-shaped cup It has many effects, such as a wide range of applications.

Next, according to the second aspect of the present invention, in addition to the effects of the first and fourth aspects of the present invention, the long paper 10 is moved at a predetermined distance in the width direction thereof. In order to obtain the base paper per one of the paper cylinders 2 by sequentially cutting each time, two protruding pieces 1A are projected in advance on one side of the base paper 1 serving as the upper side or the lower side of the paper cylinder 2 in advance. On the other side, the cutting line L is formed so as to form a notch 1C, which is a cutout mark of the protruding piece 1A. It was possible to cut out paper without waste, and to add effects such as economy and good workability.

According to the third aspect of the present invention, a "hit" mark m is formed on the surface of the base paper 1 serving as the inner surface of the paper cylinder 2 by using large characters or large symbols by one to two sheets per 100 base sheets. The final user of the instant cooked food etc. pulls the two protruding pieces 1A, which have been used as the margins, from the joint surface of the two bellows forming papers 4 with his / her finger or the like. By giving a prize, a kind of eccentric thrill can be given, and the end user can give a competitive edge to the work of making the bellows cylinder 5 from the bellows forming paper 4, thereby increasing the purchase motivation. The effect of being able to do it was added.

[Brief description of the drawings]

FIG. 1 is a schematic process diagram showing an example of a production process of a heat insulating container according to the present invention.

FIG. 2 is an enlarged vertical sectional view of the heat insulating container according to the present invention.

FIG. 3 is a cross-sectional plan view taken along the line AA in the above.

FIG. 4 is a cross-sectional plan view taken along line BB of FIG. 2;

FIG. 5 is an explanatory diagram showing an example of cutting out base paper from long paper.

FIG. 6 is a plan view showing an example of a base paper.

FIG. 7 is a schematic plan view showing an example of a manufacturing process of a conventional bellows cylindrical body.

FIG. 8 is a plan view of a fan-shaped bellows paper during the production of a conventional bellows cylindrical body.

9 is a perspective view of the conventional example shown in FIG. 8 in which short sides are joined to each other.

[Description of Signs] 1 Strong base paper 1A Protruding piece that serves as a pick-up margin 1B Joining portion 1C Notch 1a Opposite side 2 Paper cylinder 2a Folded side R Folded gear roller 3 Many vertical folds 3A Valley line of vertical fold 3B Vertical fold Ridge line 3C Oblique side of vertical fold 4 Double bellows forming paper 5 Bellows cylinder 5A Lower thin bellows paper cylinder 6 Strong paper cup 6a Outer flange of paper cup opening edge 10 Long paper m Mark per hit

Claims (4)

(57) [Claims] 1. A heat-insulating container in which a paper cup is covered with an outer cylinder, two protruding pieces 1A serving as knobs protruding from one side of a square tough base paper 1 and opposing sides 1a orthogonal to said one side of the base paper 1. The paper cylinder 2 is made by sticking them together at the joint 1B, and the cylinder 2 is flatly folded at a place where the protruding pieces 1A come close to each other, and a pair of crease rollers R, R is formed from the folded side 2a. By passing through, a two-piece bellows forming paper 4 having a number of parallel vertical folds 3 and 3 is made, and the mating surfaces are separated from the protruding piece 1A serving as the above-mentioned margin, and rolled into a cylindrical shape to form a bellows cylinder 5. The paper cup 6 is forcibly fitted into the cylinder 5 against its shape-retaining elasticity, so that the bellows cylinder 5 is substantially adapted to the outer peripheral surface shape of the paper cup to form a lower thin bellows paper cylinder 5A. A heat insulating container made of paper. 2. A paper heat insulating container according to claim 1, wherein a cutout 1C is formed on the other side of the base paper 1 facing the protruding piece 1A, which is a trace for removing a protruding piece of another base paper. 3. A becomes subjected to "those other Ri" mark m on the inner surface of the bellows cylinder 5 claim 1 or claim 2 paper insulated container according. 4. In making an insulated container in which a paper cup is covered with an outer cylinder, short sides of a long strip of paper 10 are joined to form a long paper cylinder, and this cylinder is partially divided into required dimensions. A paper cylinder 2 having two protruding pieces 1A on the upper side is formed by small cutting with a cutter blade having a recess, and this cylinder 2 is flatly folded at a position where the protruding pieces 1A approach each other. Is formed between the folding rollers R, R to form a bellows forming paper 4 having a large number of parallel vertical folds 3 and 3, and the mating surfaces thereof serve as the above-mentioned margins.
Then, the bellows cylinder 5 is formed by rolling the bellows cylinder 5 into a cylindrical shape, and the paper cup 6 is forcibly fitted into the cylinder 5 against its shape-retaining elasticity, whereby the bellows cylinder 5 is substantially adapted to the outer peripheral surface shape of the paper cup. Paper cup 6 as a bellows paper cylinder 5A
A method for producing a heat-insulating container, comprising: