JP2000203663A - Heat-insulated cup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat-insulated cup which does not create an environmental problem in disposal processing, etc., has advantage in production cost, is superior in insulating effect and is decorative as to a heat-insulated cup for instant food or instant drink, etc., to which hot water is poured for eating or drinking. SOLUTION: A plurality of 1.0-3.0 mm diameter paper strings 20 to which an adhesive agent is impregnated are wound around and adhered to the outside surface of the paper outside wall 10a of a paper cup main body 10 comprising the paper outside wall 10a and a paper bottom wall 10b in a spiral shape or in parallel with the paper bottom wall. On the top of the paper strings 20, a paper outside sleeve 30 roughly in the same shape as the paper outside wall 10a of the paper cup main body 10 is inserted for adhesion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated cup for instant foods, beverages, etc., which are poured with boiling water.

[0002]

2. Description of the Related Art Insulation cups for pouring hot water into a container such as instant noodles, instant miso soup, instant soup, and the like have been known. In view of the problems and environmental hormone problems, as a heat-insulating cup that is easy to dispose and incinerate and has no problem with environmental hormones, the periphery of a paper cup body disclosed in Japanese Patent Application Laid-Open No. 8-58762 is insulated. There is a paper insulation cup covered with a protective cover.

FIG. 4 shows an example of the above-mentioned heat insulating cup made of paper.
As shown in the perspective view of FIG. 4A, the outer surface of the paper side wall (10a) of the paper cup body (10) composed of the paper side wall (10a) and the paper bottom wall (10b) is shown in FIG. As shown in the side sectional view, a heat insulating sheet (50) having an embossed fan-shaped heat insulating material (54) attached to one surface of a liner paper (52) is wound around and adhered and fixed, and a paper heat insulating cup (5) is formed. And has been effectively put to practical use.

[0004] However, in the above paper insulation cup,
There is a problem in the cost of the heat insulating sheet (50) itself and the manufacturing cost including the winding thereof.

As shown in FIG. 5, a paper outer sleeve (30) having a bottom curl (33) on the lower inside is attached to the outer surface of the paper cup body (10), and the paper cup body (10) is attached. ), There is a double-container-type heat-insulating cup (6) provided with a space layer (40) between the outer wall of the paper and the outer sleeve (30) made of paper.

However, in the double-container-type heat-insulating cup (6), the upper portion of the cup is hot and the paper outer sleeve (30) is crushed while being held by hand, and the space layer (40) is collapsed.
And the heat insulation effect is lost as a result.

As shown in FIG. 6, there is a caterpillar-type heat insulating cup (7) in which a caterpillar-type embossed paper (55) is wound and adhered to the outer surface of a paper cup body (10).

However, in the caterpillar-type heat insulating cup (7), the outer surface of the cup has irregularities, and the concave portion (5
5a) small letters (names of ingredients, nutrients, etc.)
However, there are problems such as difficulty in reading, lack of appearance and lack of cosmetics.

[0009]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and it is an object of the present invention to provide an insulated cup for pouring hot water and eating instant food and beverages. Another object of the present invention is to provide a heat-insulating cup which is free from environmental problems related to waste treatment and the like, is superior in production cost, is excellent in heat insulation effect and is excellent in cosmetics.

[0010]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, a paper cup body having a paper outer wall and a paper bottom wall is provided on an outer surface of the paper outer wall. A heat-insulating cup, wherein a paper twist impregnated with an adhesive is wound and adhered, and a paper outer sleeve having substantially the same shape as a paper outer wall of the paper cup body is inserted and adhered onto the paper twist. It is what it was.

According to a second aspect of the present invention, there is provided the heat insulating cup according to the first aspect, wherein the thickness of the paper twist is 1.0 mm to 3.0 mm.

According to a third aspect of the present invention, there is provided the heat insulating cup according to the first or second aspect, wherein the sticking of the paper twist is spiral.

According to a fourth aspect of the present invention, there is provided the heat insulating cup according to the first or second aspect, wherein the paper twisting is performed in a plurality of pieces in parallel with the paper bottom wall. is there.

[0014]

Embodiments of the present invention will be described below. As shown in FIG. 1, the heat insulating cup of the present invention has an adhesive on the outer surface of the paper outer wall (10a) of the paper cup body (10) composed of the paper outer wall (10a) and the paper bottom wall (10b). The impregnated paper twist (20) having a diameter of 1.0 mm to 3.0 mm is spirally wound and adhered, and the paper outer wall of the paper cup body (10) is placed on the adhered paper twist (20). (10a)
A paper outer sleeve (30) having substantially the same shape as that described above is inserted from the paper bottom wall (10b) of the paper cup body (10) and attached to the paper twist (20).

As shown in the perspective view of FIG. 2, a paper twist (20) is formed on the paper outer wall (10) of the paper cup body (10).
a) On the outer surface, parallel to the paper bottom wall (10b),
And a heat insulating cup (2) wound and adhered
It is.

The thickness of the paper twist (20) is 1.0 m in diameter.
m to 3.0 mm is preferable. If the diameter is too small and less than 1.0 mm, there is a risk of breaking when impregnating or winding with an adhesive, and the heat insulating effect is unfavorably reduced. On the other hand, if the diameter exceeds 3.0, the cup is too thick and the appearance is deteriorated, which causes an economical problem with the paper twisting (20), which is not preferable.

Further, as shown in the perspective view of FIG. 1, when the paper twist (20) is spirally wound and adhered, the number of turns is determined on a vertical line from the upper part to the lower part of the paper cup body (10). It is necessary to have at least about 3 or 4 wires. It can be cup size or paper outer sleeve (30)
Although it depends on the thickness of the paper outer wall (10a), the paper outer sleeve (30) may be at the top or bottom of a part of the paper outer wall (10a) when pouring hot water and eating it. This is because there is a risk of collapse. Also, the upper limit of the number is not particularly limited, but if it is too large, there is a problem in economics for the paper twisting (20), which is not preferable.

As shown in the perspective view of FIG. 2, when the paper twist (20) is wound and adhered in parallel with the paper bottom wall (10b), about three to four strands are wound in the same manner as in the spiral winding. Preferably, two papers are provided one above and below the outer paper wall (10a).
This is because, in the case of a book alone, when pouring hot water and eating, there is a risk that the middle part of the outer sleeve (30) made of paper may be crushed if held by hand. Further, as in the case of the spiral winding, if the number is too large, there is a problem in economy of the paper twisting (20), which is not preferable.

The production of the heat-insulating cup of the present invention is performed, for example, by referring to FIG.
As shown in the figure, the paper twist (20) unwound from the thread-like paper twist supply unit (100) is converted into an adhesive impregnated water unit (102).
And the adhesive (60) is impregnated, and the paper twisted portion (1
04) Paper outer wall (10a) of paper cup body (10)
Wrap around the outer surface and cut the paper twist (20) (paper twist (2
The cutter section 0) is not shown and is not shown), and can be relatively easily automated so as to be stuck and fixed.

Further, the paper twist (20) stuck above
When the adhesive is in a semi-dry state, the paper outer sleeve (30)
Is inserted and adhered from the paper bottom wall (10b) side of the paper cup body (10), and the impregnated adhesive is dried and cured to obtain the heat insulating cup (1).

The paper cup body (10) constituting the heat insulating cup (1) of the present invention has a basis weight of 190 g / m ^{2 to} 400 g.
/ M ² cup base paper laminated with polyethylene of about 30 μm to 40 μm is generally used.

The paper outer sleeve (30) constituting the heat insulating cup (1) of the present invention has a basis weight of 190 g / gram.
Examples thereof include paperboards such as coated balls, uncoated balls, coated manila, uncoated manila, and ivory having an m ^{2 to} 400 g / m ² , but are not particularly limited as long as they are excellent in printability and cosmetics. .

Further, as the paper twist (20) constituting the heat insulating cup (1) of the present invention, a cord (twisted kraft paper) for wrapping and packing and the like can be mentioned.

The adhesive (60) for impregnating the paper twist (20) includes polyvinyl acetate emulsion, ethylene-vinyl acetate copolymer emulsion, acrylate ester emulsion having adhesiveness and impregnation property of paper.
A polyvinyl alcohol emulsion or the like is used, and a blend of a natural adhesive such as dextrin and casein can be used in consideration of the impregnation property and the extension of the adhesive.

[0025]

[Configuration and shape of paper cup body (10)]

1) Paper outer wall (10a): A 40 μm polyethylene extrusion coat layer on the outer surface of a cup base paper having a basis weight of 280 g / m ² . 2) Paper bottom wall (10b): A 35 μm polyethylene extrusion coat layer on the outer surface of a cup base paper having a basis weight of 270 g / m ² . 3) Size: Diameter of upper flange part: 144mm Outer diameter just below flange part: 130mm Lowermost outer diameter: 100mm Height: 105mm Cup taper angle: 8 °

[Structure and Shape of Paper Outer Sleeve (30)] 1) Material: Court ball having a basis weight of 290 g / m ² 2) Size: Uppermost inner diameter 133 mm Lowermost inner diameter 103mm height ... 100mm Sleeve taper angle ... 8 °

The diameter obtained by impregnating an ethylene-vinyl acetate copolymer emulsion as an adhesive (60) horizontally at 20 mm, 55 mm, and 85 mm from the top of the paper cup body (10) obtained above. 0mm paper twist (2
0) was wound and fixed.

Subsequently, the paper outer sleeve (30) obtained above is inserted into the paper cup body (10) from the paper bottom wall (10b) when the adhesive (60) is in a semi-dry state, and dried and cured. Thus, a heat insulating cup (1) was obtained.

Hot water was poured into the obtained heat-insulating cup (1), and the temperature of the cup surface, that is, the outer surface of the paper outer sleeve (30) was measured. As a result, the following temperature courses were observed in all places.

Immediately after pouring hot water ... 50 ° C, after 30 seconds ... 63.5 ° C, after 60 seconds ... 64.2 ° C After 2 minutes ... 63.8 ° C, after 3 minutes ...・ 62.7 ° C

From the above measurement results, it was found that the heat insulating cup (1) was excellent in the heat insulating effect in any place.

[0032]

As described above, the present invention has the following effects. That is, several 1.0-3.0 mm diameter paper twists impregnated with an adhesive are spirally or horizontally wound and adhered to the outer surface of the paper outer wall of the paper cup body composed of the outer wall made of paper and the bottom wall made of paper. Since the heat insulation cup is formed by inserting and attaching a paper outer sleeve having substantially the same shape as the paper outer wall of the paper cup main body onto the paper twist, there is no environmental problem related to waste treatment and the like, and the production cost is reduced. Insulation cup which is superior in heat insulation effect and is excellent in cosmetics.

Therefore, the present invention exhibits an excellent practical effect as an insulated cup for instant foods, instant beverages, etc., which are poured with boiling water.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an embodiment of a heat insulating cup of the present invention.

FIG. 2 is a perspective view illustrating another embodiment of the heat insulating cup of the present invention.

FIG. 3 is a diagram schematically showing an outline for explaining one example of a manufacturing process of the heat insulating cup of the present invention.

FIG. 4 illustrates an example of a conventional paper heat insulating cup, and FIG. 4 (a) is a perspective view thereof. (B) is a side sectional view of a heat insulating sheet constituting the same.

FIG. 5 is a side sectional view illustrating an example of a conventional double-container-type heat-insulating cup.

FIG. 6 is an explanatory view showing an example of a conventional caterpillar-type heat insulating cup in a cross section viewed from above.

[Explanation of symbols]

 1 Insulation cup 5 Paper insulation cup 6 Double container insulation cup 7 Caterpillar insulation cup 10 Paper cup body 10a Paper outer wall 10b Paper bottom wall 10c ‥ Flange part 20 ‥‥ Paper twist 30 ‥‥ Paper outer sleeve 33 ‥‥ Bottom curl 34 ‥‥ Flange part curl 40 ‥‥ Space layer 50 ‥‥ Insulation sheet 52 ‥‥ Liner paper 54 ‥‥ Fan-shaped heat insulation material 55 ‥‥ Caterpillar-type embossed paper 55a {Cavity of caterpillar-type embossed paper 60} Adhesive 100} Thread-like paper twist supply unit 102 {Adhesive impregnated unit 104} Paper twist-wrap unit

Claims (4)

[Claims] An adhesive-impregnated paper twist is wound around an outer surface of a paper outer wall of a paper cup body comprising a paper outer wall and a paper bottom wall, and the paper cup body is placed on the paper twist. An insulated cup comprising a paper outer wall having substantially the same shape as a paper outer wall. 2. The thickness of the paper twist is 1.0 mm to 3 mm.
2. The heat insulating cup according to claim 1, wherein the thickness is 0 mm. 3. The heat-insulating cup according to claim 1, wherein the paper twist is spirally attached. 4. The heat insulating cup according to claim 1, wherein a plurality of the paper twists are attached in parallel with the paper bottom wall.