JP2000025739A - Paper-made heat insulation container and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the harm generated by waste pollution and environment hormone by using papers obtained from natural resources as a heat insulation container material. SOLUTION: When a heat insulation container formed of a tough paper cup expanding upward covered with an outer cylinder is to be manufactured, a belt-shaped thick machine-made paper is inserted between folds forming rollers 2, 2 forming a paper from the short side of the machine-made paper 1 and a bellows forming paper 4 with a number of vertical folds 3, 3 is manufactured, and then opposite sides of the paper 4 are stuck together one another, and a bellows cylinder 5 with a number of vertical folds 3, 3 in parallel with the opposite sides is formed, and a paper cup 6 is inserted forcibly into the cylinder 5 in resistance to its shape retention elasticity to almost grape the bellows cylinder 5 to the outer peripheral face shape of the paper cup 6 and fitted thereon as a bellows paper cylinder 5A tapering toward its lower part. An outer collar 6a is formed on the opening edge of the paper cup 6, and the bellows cylinder 5 can be fitted to the outer collar 6a, or the bellows cylinder 5A can be bonded on the paper cup 6.

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 was bulky.

As another heat insulating container, there is a conventional heat insulating container described in, for example, Japanese Utility Model Laid-Open No. 56-94713. 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 addition to this conventional example, Japanese Utility Model Application Laid-Open No.
As described in JP-A-07774, a cup constituted by a bottom plate and a side plate formed with folds integral with the bottom plate is fitted to the outside of the side plate of the cup to cover all or a part of the side plate and to have characters on the outside. Insulated containers for baked confectionery, which are provided with a tubular outer frame having poor heat conductivity and a flat surface on which patterns such as patterns and pictures are provided, are also well known.

[0005]

In the former technique described above, the upper inner peripheral surface of the outer jacket comes into direct surface contact with the upper outer peripheral surface of the container body. In the upper part, the heat of the food in the inner container is conducted in the thickness direction of the material, and when the food is hot food such as instant noodles with hot water poured, the fingers with the upper part of the outer jacket become hot quickly. To prevent burns or to prevent finger burns,
There has been a problem that hot food and boiling water may be dropped together with the inner container by removing the hand from the mantle.

[0006] The latter of the conventional examples, ie,
In Japanese Unexamined Utility Model Publication No. 61-107774, the light-weight baked confectionery in the cup is solidified on the inner surface of the fold of the cup and solidified. Because of the line contact conduction, the heat insulation effect is relatively good, but there is still heat conducting in the ridge line thickness direction, and the cup itself is a thin western paper such as glassine paper by deep drawing, Since the bottom and the side plate with folds are integrally formed and easily deformed, there is a problem in that when water or liquid is added, the top of the container is opened due to the gravity and the liquid overflows.

In addition to these conventional examples, as shown in FIG. 5, a number of parallel fold lines 11 are formed on a base paper 10 to be creased by a well-known crease gear roller as shown in FIG. After obtaining the plate-shaped bellows paper 12, the bellows paper 12 is punched into a fan-shaped fan-shaped paper 13 as shown in FIG. 6 which can be wound around the outer peripheral surface of the paper cup. A heat insulating container that is adhered to the outer peripheral surface of a paper cup while producing a lower thin bellows cylinder 14 as shown in FIG.

However, this conventional example has an advantage that one kind of creasing machine can cope with many kinds of paper cups, but after winding the paper cup, as shown in FIG.
Since the left and right fold lines 11 of the 4A are V-shaped and face the concavities and convexities that are inconsistent, the appearance is poor, and the printing pattern is a specially shaped printing pattern along the curve of the bellows paper 12 and the flat base paper 10
Otherwise, there are many problems that the left and right of the arrowhead joint 14 become discontinuous, which is also troublesome and troublesome in terms of print display technology.

In order to solve these problems, in order to make a fan-shaped bellows paper along the outer circumference 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 according to the size of the paper cup and the number of types of taper, so fold setting is complicated. 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.

The present invention has been made in order to eliminate many problems as described above, 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 the harmful effects of environmental hormones, it eliminates heat conduction that is directly transmitted in the thickness direction of the heat-insulating outer cylinder, thereby enhancing the heat-insulating effect, and improving the appearance of the folds at the joints of the bellows cylinder to improve appearance. And
By making the printed pattern easier to connect to the left and right joints and forcing a paper bellows cylinder into a tapered paper cup, one type of bellows cylinder can be used interchangeably with multiple types of cups. Yes.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to manufacture a heat insulating container in which an outer cylinder is covered on a tough paper cup having an upper surface spread, by using a strip of tough base paper such as thick western paper in its short side. After passing between the pair of creasing rollers to form a bellows forming paper having a number of vertical folds, the opposite sides of this paper are adhered to each other, and the above-described bellows cylinder with a number of vertical folds parallel to the opposite sides is formed. While making, the paper cup is forcibly fitted into this cylinder against its shape retention elasticity, so that the bellows cylinder is almost adapted to the outer peripheral surface shape of the paper cup, and the paper cup is put on the paper cup as a thinner bellows paper cylinder. It was achieved by putting on.

Further, an outer flange may be formed on the opening edge of the paper cup, and the bellows cylinder may be put on the paper cup up to the outer flange, and the paper cup and the bellows paper cylinder may be bonded.

[0013]

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 (f).
In manufacturing a heat insulating container in which an outer cylinder is covered on a tough paper cup with an upper spread, tough base paper 1 such as a belt-shaped thick western paper is folded from its short side as a well-known pair as shown in FIG. 1 (a). After making a bellows forming paper 4 having a continuous triangular wave front composed of a large number of longitudinal folds 3 and 3 as shown in FIG.
As shown in FIG. 1 (c), the bellows cylinder 5 having the plurality of vertical folds 3 and 3 parallel to the opposite sides thereof and the joint portion 5a where each fold is continuous is formed by applying an envelope or a palm together while being in contact with each other as shown in FIG.
Make as shown in (d).

Next, as shown in FIG. 1 (e), the upper portion of the paper cup 6 in the cylinder 5 is slightly expanded in diameter against the shape-retaining elasticity of each of the vertical folds 3 and 3, and the paper cup 6 is moved upward. After forcibly fitting from the lower part as shown in FIG.
Is reduced by the restoration elasticity of the plurality of vertical folds 3, 3 so that the triangular mountain-like vertical folds 3 of the bellows cylinder 5 are continuously formed in the outer peripheral surface shape of the paper cup 6 as shown in FIG.
3, as shown in FIG.
As shown in FIG. 3, it could be attached to the paper cup 6, and the paper insulation container according to the present invention could be manufactured. 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 covered on the paper cup 6 up to the outer flange.

The heat-insulating container according to the present invention thus produced can be transported efficiently from the manufacturer to the food maker because a large number of the heat-insulating containers according to the present invention can be transported from the manufacturer to the food maker. After putting the cooked dried food and other things (not shown) into the
The 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 hypotenuse 3C of the bellows paper cylinder 5A between the valley line 3A and the ridge line 3B of the plurality of vertical folds 3 and 3 is shown.
Can be blocked, and the heat conduction that is directly transmitted in the thickness direction of the paper of the paper cylinder 5A can be prevented. The bellows paper cylinder 5A does not become hot. Can eat food.

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.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The aspect ratio of the heat insulating container according to the present invention can be arbitrarily selected. However, the heat insulating container can be made flatter or longer than that of the previous example. It may be fixed inseparably by attachment or the like. In this case, for example, a heating such as a polyethylene coat layer (so-called poly coat layer) is applied to the inner surface of the bellows cylinder 5 or the outer surface of the paper cup 6. If the paper having the adhesive synthetic resin layer applied thereto is used, the bellows paper cylinder 5A can be spotted and bonded only by partially heating and pressing the bellows paper cylinder 5A with respect to the paper cup 6.

The inner surface of the paper cup 6 may be coated with the above-mentioned polycoat layer or polylaminate layer. Further, the lower part of the bellows paper cylinder is extended below the bottom of the paper cup 6, and the periphery of the lower edge of the paper cylinder 5A is extended. By curling, the lower part of the bellows paper cylinder 5A can be reinforced.
May be formed by curling with a well-known curling machine, but may be a flat brim slightly curled in the lateral direction without curling.

[0020]

The present invention adopts the above-described embodiment, and has the following effects. According to the first and fourth aspects of the present invention, paper made of natural resources is used as each component of the heat insulating container. The bellows paper cylinder 5 having an oblique side 3C between a number of vertical folds 3 and 3 can be used as a heat insulating outer cylinder.
Since A was adopted, the heat conduction directly transmitted in the thickness direction of the paper cylinder 5A was eliminated, and the heat insulating effect could be enhanced. In particular, the bellows cylinder 5 was extremely easy to make, and this was used for the lower thin external shape of the paper cup 6. There is an industrial effect that the lower accordion cylindrical body 5A having a large number of uniform vertical folds 3 and 3 can be easily obtained and easily obtained.

Further, according to the above two inventions, in manufacturing a heat insulating container in which an outer cylinder is covered on a tough paper cup which is spread upward, a band-shaped tough base paper 1 is folded from its short side with a pair of creasing rollers 2. , 2 to form a bellows forming paper 4 having a large number of vertical folds 3, 3, and then stick the opposite sides of the paper 4 together to form the multiple vertical folds 3, 3 parallel to the opposite sides.
The bellows cylinder 5 is attached and 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. Since the paper cup 6 is covered as the bellows paper cylinder 5A, the lower thin bellows paper cylinder 5A composed of the bellows cylinder 5 in which the unevenness of the fold of the joint part 5a and the peripheral surface printing are neatly aligned is arranged vertically on the left and right of the joint part 5a. The paper cup 6 with the unevenness due to the folds 3 and 3 and the peripheral surface printing pattern being naturally aligned as a whole.
Therefore, it was possible to provide a large number of beautiful and elegant insulated containers.

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, it can be used well with, for example, a square cup or a drum-shaped cup in addition to the circular cup of the previous example. It has many effects, such as being versatile.

Next, claims 2 and 5 of the present invention will be described.
According to the present invention, in addition to the effects of the first and fourth aspects of the present invention, an outer flange 6a
When a large number of thermal insulation containers according to the present invention are polymerized and integrated (so-called stacking), the uppermost or
In order to take out one by one from the bottom one by one, a finger or a robot arm take-out claw of a vending machine is easily hooked on the outer collar 6a, so that an effect of being able to take out easily can be added.

According to the third aspect of the present invention, the paper cup 6
As a result, the bellows-made paper cylinder 5A became harder to come off, so that an effect such as that the paper cup 6 and the bellows-made paper cylinder 5A could be easily taken out as a pair when taking out one by one from the stacking state could be 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 a schematic plan view showing an example of a manufacturing process of a conventional bellows cylinder.

FIG. 3 is a plan view of a fan-shaped bellows paper during the production of a conventional bellows cylinder.

4 is a perspective view of the conventional example shown in FIG. 6 in which short sides are joined to each other.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Strong base paper 2 Folding roller 3 Many vertical folds 3A Vertical fold valley line 3B Vertical fold ridgeline 3C Vertical fold oblique side 4 Bellows forming paper 4a Opposite side of bellows forming paper 5 Bellows cylinder 5a Joint of bellows cylinder 5A Bellows paper Tube 6 Strong paper cup 6a Outer flange at the opening edge of paper cup

[Procedure amendment]

[Submission date] July 28, 1998 (1998.7.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[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 a schematic plan view showing an example of a manufacturing process of a conventional bellows cylinder.

FIG. 6 is a plan view of a fan-shaped bellows paper during the production of a conventional bellows cylinder.

7 is a perspective view of the conventional example shown in FIG. 6 in which short sides are joined to each other.

[Description of Signs] 1 Tough base paper 2 Folding roller 3 Many longitudinal folds 3A Vertical fold valley line 3B Vertical fold ridgeline 3C Oblique side of vertical fold 4 Bellows forming paper 4a Opposite side of bellows forming paper 5 Bellows cylinder 5a Bellows cylinder Joint 5A bellows paper cylinder 6 Strong paper cup 6a Outer flange of paper cup opening edge

Claims (5)

[Claims] An insulated container in which an outer cylinder is covered on a tough paper cup extending upward and a plurality of longitudinal folds are formed by passing a band-shaped tough base paper from a short side thereof between a pair of creasing rollers. 3. A bellows forming paper 4 having the bellows 3 is attached, and the opposite sides of the paper 4 are adhered to each other to form a bellows cylinder 5 having a plurality of the vertical folds 3 and 3 parallel to the opposite sides. A paper heat insulating container in which the paper cup 6 is forcibly fitted against the elasticity so that the bellows cylinder 5 is substantially adapted to the outer peripheral surface shape of the paper cup, and the paper cup 6 is covered as the lower thin bellows paper cylinder 5A. 2. The paper insulation container according to claim 1, wherein an outer flange 6a is formed on an opening edge of the paper cup 6. 3. The paper heat insulating container according to claim 1, wherein an inner surface of the bellows paper cylinder 5A is partially adhered to an outer surface of the paper cup 6. 4. A method for producing a heat insulating container in which an outer cylinder is covered on an upper spread and tough paper cup.
Is passed from the short side thereof to a pair of crease forming rollers 2 and 2 to form a bellows forming paper 4 having a number of vertical folds 3 and 3, and the opposite sides of the paper 4 are adhered to each other and The bellows cylinder 5 having a number of the parallel vertical folds 3 and 3 is formed, and the paper cup 6 is forcibly fitted into the cylinder 5 against its shape-retaining elasticity, thereby forming the outer peripheral surface of the paper cup into the shape. Approximately acclimatize the bellows cylinder 5 and make the bellows paper cylinder 5A smaller
A method for manufacturing a heat insulating container made of paper, which is covered with a paper cup 6. 5. The method according to claim 4, wherein an outer flange 6a is formed on an opening edge of the paper cup 6, and the bellows cylinder 5 is covered on the paper cup 6 up to the outer flange. .