JP2002080026A - Cup for heat-processed food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make many stacked cups easily slidable and a single cup easily separable one by one from a stacked body of many cups. SOLUTION: A substantially arc-shaped and short strip-like blank 1 for a side cylinder is rounded in its lengthwise direction, and ends 1a of the rounded blank are bonded to each other at a bonding part 2 to form a hollow and truncated cone-shaped cup side cylinder 3. In forming a cup in which a bottom paper 4 is bonded to the small-diameter peripheral surface 3a of the cup side cylinder 3, many flaps 5 are formed on an outer periphery of a substantially circular bottom paper blank, and a substantially circular notch 6 is respectively formed in each valley among the respective flaps 5. Each flap 5 is upwardly folded from a substantially central portion of each notch 6 to form a flap rising piece 5b, thereby forming the substantially round pan-like bottom paper 4 in which a notch peripheral part 5c of each rising piece 5b is rounded in the peripheral direction of the side cylinder along a folded arc-like edge side 6a of each notch 6. By bonding the small-diameter peripheral surface 3a of the cup side cylinder to the flap rising pieces 5b of the bottom paper, the peripherally rounded state of the small-diameter peripheral surface 3a is smoothly maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a cup for heat-processed food such as a heated confectionery made of thin paper such as kraft paper or a heat-resistant plastic sheet.

[0002]

2. Description of the Related Art A beverage cup has a side tube made of paper and plastic.
Many are made of sticks, and paper cups are made of paper fibers.
Shapes (length, thickness) are uniform and the fibers are present evenly
Specially made for paper cups
Paper thickness of 200g / m² Use the above. Burning
Heat-treated paper cups for confectionery etc. are compared to “cup base paper”
40-150g / m with thin thickness²About thin paper,
100-200 μm thick polyethylene terephthalate
Use any heat-resistant plastic sheet.

[0003] That is, the reason that thin paper or heat-resistant plastic sheet, which is not much used for paper cups, is used for the cup side tube for baked confectionery is that thin paper such as kraft paper has a long tissue fiber and thus has a particularly high heat resistance. It is unbleached kraft paper and polyethylene terephthalate so-called PET, which has not been subjected to bleaching treatment by chemical treatment, is also preferable from the viewpoint of food hygiene. The main reason is that the unevenness of the transparent portion due to the inflowing oil and fat is not conspicuous in unbleached kraft paper or PET sheet.

As a baked confectionery paper cup (paper container) made of lower grade paper, there is one described in Japanese Patent Publication No. Hei 7-100504. In this conventional example, as shown in FIG. 8, a blank 1 in which thin paper is formed in a substantially arc-shaped strip shape is rounded in its length direction, and its ends 1a are adhered to each other by an adhesive portion 2 to form a hollow truncated cone. This is a heated confectionery paper cup in which a cup-side cylinder 3 is formed, and a round plate-shaped bottom paper 4 is adhered to an inner peripheral surface of a small-diameter end portion thereof at a rising peripheral surface 7 thereof.

[0005]

In the prior art, the rising peripheral surface 7 of the bottom paper 4 sandwiches the circular paper between upper and lower drawing dies for raising the periphery of the circular bottom paper, and resists its rigidity. As shown in FIG. 8, many vertical wrinkles are generated on the rising peripheral surface 7 based on the difference between the inner diameter and the outer diameter of the peripheral portion of the circular paper, and these vertical wrinkles are partially formed. As a result, the concave and convex portions 7A due to the vertical wrinkle polymerization are generated at many places.

[0006] These uneven portions 7A are provided on the rising peripheral surface 7.
When the height of the bottom paper 4 is relatively low within 10 to 20 times (about 1 to 2.0 mm) of the thickness of the bottom paper, it is not noticeable. If the height is set to about 3 to 5 mm, which is 30 to 50 times the thickness of the base paper, in order to increase the adhesive strength of the rising peripheral surface 7,
As shown in FIG. 8, a large number of protrusions 8 of about 0.1 to 0.3 mm formed by the large number of uneven portions 7 </ b> A are formed on the outer peripheral surface of the side tube 3 around the bottom paper 4.

Accordingly, after a large number of cups C 'having the protruding projections 8 of the cup side cylinder 3 are stacked and shipped as shown in FIG. 9, the user removes the cup C from the cup stack. ′ Are pulled out and separated one by one, as shown in FIG. 9, the protruding protrusion 3A has bitten into the inner surface of the outer cup by about 0.1 to 0.3 mm. Due to the surface contact between them, it is difficult for air to enter between the side cylinders, so it is extremely difficult to separate cups individually, significantly impairing workability. There are serious problems.

[0008] In addition to the above-mentioned conventional example, as a conventional example in which the cup side cylinder is provided with irregularities to make it easy to separate a single cup from the cup stack, a registered utility model proposed by the applicant of the present application has been proposed. As described in Japanese Patent No. 3046289, a predetermined fold, a pattern, a concavo-convex pattern such as a character is embossed on a roll paper or sheet, and both ends of a punched fan-shaped blank are glued to form a hollow conical cylindrical shape. A heat-processed confectionery that is baked or steamed into a product integrally with the confectionery in a state in which the kneaded confectionery seeds are housed in a cup having a peripheral wall (cup-side cylinder) and a bottom plate inserted into the bottom of the peripheral wall. Cups are also well known.

However, also in this example, a large number of wrinkles are formed on the outer surface of the joint between the cup-side cylinder and the bottom paper due to bending wrinkles at the lower portion of the cup peripheral wall and a large number of drawing wrinkles generated around the rise of the round plate-shaped bottom paper. Because a protrusion of
There is a problem that the difficulty of separating the single item due to the protrusion cannot be solved yet.

[0010] Further, as a countermeasure for excess in the corner portion where the bending line of the sheet metal is perpendicular to the sheet metal press box making, a book "Press Processing Data Book" 155, published by Nikkan Kogyo Shimbun on January 30, 1988. As described on the page, it is well known that a hole for so-called "corner cutting" is provided in a portion orthogonal to the folding curve to prevent a corner portion from rising due to excess corner edge after sheet metal bending. However, in this conventional example, the sheet metal is bent into a substantially rectangular box shape, and in this conventional example, the occurrence of irregularities based on the "drawing wrinkle" generated on the peripheral rising surface of the round dish-shaped bottom paper is not caused. However, there is still a problem that it cannot be prevented.

According to the present invention, in order to eliminate the above-mentioned problems, a substantially circular shape is formed between the valleys of a large number of flaps protruding around the bottom paper to be adhered to the small diameter peripheral surface of the cup-side cylinder which is widened upward. By forming notches communicating with each other, bending each flap from almost the center of each notch and raising it, sliding up a number of stacked cups so that wrinkles and corners do not occur on this rising surface In addition to making it easy to separate the cups one by one from the pile of many cups by making it easy for air to enter between the bottom papers and between the side cylinders through the notch between the bottom paper flap valleys. Aim.

[0012]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cup having a hollow truncated cone shape by rounding a substantially arc-shaped strip-shaped side cylinder blank in its length direction and bonding its ends to each other with an adhesive portion. When making a side cylinder and making a cup with a bottom paper glued to the small diameter peripheral surface, a number of flaps are formed around the outer circumference of a substantially circular bottom paper blank, and a substantially circular notch is formed between the valleys of each flap At the same time, the flaps are bent upward from substantially the center of each of the notches to form flap rising pieces, so that the notch peripheral portions of these rising pieces are aligned with the bent arc-shaped edges of the notches. By making a substantially circular dish-shaped bottom paper rolled in the cylinder circumferential direction, by bonding the side cylinder small diameter peripheral surface to the flap rising piece of this bottom paper,
This was achieved by keeping the circumferentially rounded state of the small diameter peripheral surface smooth. Further, when eating the heat-processed food in the cup, a perforated cutting line for facilitating the stripping of the cup-side cylinder or a knob for peeling may be formed on the cup-side cylinder.

[0013]

Embodiments of the present invention will be described with reference to the drawings. First, the basic form of the present invention is:
In making the cup C as shown in FIGS. 1 and 2, first, thin paper such as kraft paper having a thickness of about 40 to 80 g / m ² or PE having a thickness of about 100 to 200 μm.
A desired number of vertical linear projections is formed on a heat-resistant plastic sheet such as a T-sheet by a known means such as hot press processing or uneven roller processing as necessary, and the blank 1 cut into a substantially arc-shaped strip is cut in the length direction. Then, the end portions 1a are adhered to each other by an adhesive portion 2 by glue or heat sealing to form a cup side tube 3. On the other hand, in order to produce a substantially circular dish-shaped bottom paper 4 as shown in FIG. 3 which is adhered to the inner peripheral surface on the small diameter side of the side cylinder 3,
A large number of arc pieces or triangular flag-shaped flaps 5 are formed on the outer periphery of a substantially circular bottom paper blank 4a as shown in FIG. 4, and a substantially circular notch 6 is formed in a V-shaped valley 5a between the flaps 5. I do.

Each of the flaps 5 is bent upward or downward as shown in FIG. 3 from a circular fold line L substantially connecting the centers of the cutouts 6 to form a flat circular flap rising piece 5b. A substantially round plate-shaped bottom paper 4 in which the notch peripheral portion 5c of each of the rising pieces 5b is rolled in the circumferential direction of the side cylinder along the bent arc-shaped edge 6a of the notch 6.
By bonding the flap rising piece 5b of the bottom paper to the side cylinder small-diameter peripheral surface 3a by a well-known means such as a mandrel as shown in FIGS. 1 and 2 to round the small-diameter peripheral surface 3a in the circumferential direction. A heat-processed food cup C according to the present invention, in which the state is kept smooth, is constituted.

However, in the cup C according to the present invention, the rising pieces 5b of the cup bottom paper 4 are formed by bending the flaps 5 upward or downward from substantially the center of each notch 6.
The notch peripheral portion 5c at the lower part of the rising piece is formed as shown in FIGS.
Can be rolled in the circumferential direction of the side cylinder along
By bonding the small-diameter peripheral surface 3a of the side tube 3 to the outer surface of the flap rising piece 5b, the circumferentially rounded state of the notch peripheral portion 5c of the rising piece 5b could be secured.
The drawing wrinkles and the protruding corners to be generated at the bending base of each flap 5 do not occur in the cup C according to the present invention as shown in FIGS. 1, 3 and 4.

Therefore, when a large number of the cups C are piled up as shown in FIG.
That is, since the wrinkles and the protruding corners due to the bending of the large number of flaps 5 do not occur on the outer peripheral surface 3a of the side cylinder small diameter as described above, the outer peripheral surface 3a of the side cylinder small diameter as shown in FIG. Without digging into the inside of the outer cup,
Since air can easily enter directly from the large number of notches 6 between the side cylinders 3 and 3 and between the bottom papers 4, single cups can be easily pulled out and taken out from the cup stack. In addition, as shown in FIG.
If the shape and size of the notch 6 are selected so that a part of the notch 6 remains, the air can easily enter directly between the side cylinders, so that it becomes easier to separate single items.

Further, even if a confectionery seed is put into the cup C according to the present invention, the confectionery seed does not leak out from each of the cutouts 6 and is baked in a furnace or steamed in a steaming pot to obtain the confectionery seed. While being heated and expanded, the wheat starch in the confectionery is converted into an edible baked confectionery or steamed confectionery, which can be eaten by peeling the cup side tube 3.

That is, the confectionery type in the cup C, that is, the wheat starch which occupies most of the “dough” is gelatinized by heating at 60 ° C. or more, and the bottom paper 4 is also glued and solidified from the inner surface of the cup side tube 3. . In order to form the cup side tube 3, the bonding portion 2 for bonding both ends of the side tube blank 1 receives an expansion pressure due to expansion before the wheat starch is gelatinized by heat, so that this portion is sufficiently bonded. Although it is necessary to pour, even if there is a hole or a gap having a diameter of about 1 to 3 mm or less due to the notch 6 around the lower part of the side cylinder, the viscosity of the dough and the glue of the dough during dough filling or after dough filling. There is no fear that the dough leaks out of the notch 6 due to the change of the shape.

Alternatively, for example, gratin dough or noodles other than the confectionery type may be put in the cup C and cooked in the cup C. The portion indicated by the symbol m in FIG. 1D is a perforated cutting line, and the thickness of the cup C in each of the above-described drawings is enlarged and exaggerated for easy understanding.

[0020]

EXAMPLE The height of the cup C was 60 mm, the opening angle was about 5 degrees with respect to the center line of the cup, the number of flaps 5 was 20, the height of each flap was 8 mm, and the width was 1 mm.
In the example of FIGS. 1 and 2 in which the diameter of the notch 6 is 5 mm and the notch 6 has a diameter of 2 mm, the outer peripheral surface of the lower portion of the side cylinder facing the peripheral portion of the cup bottom paper 4 has a wrinkle caused by bending of the flap 5 and a protruding corner. Does not occur as in FIGS. 1, 3 and 4, and the outer peripheral surface of the upper cup C in the cup stack is
Since there was no way to cut into the inner peripheral surface of the lower lower cup, the engagement friction between adjacent cups could be reduced,
Cup separation became easy. In addition, it turned out that the outline of the notch 4 should just be an outline which resembles a circle, such as an elliptical shape, an oval shape, or an obtuse polygon, other than the circular shape of the example of illustration.

The direction in which the bottom paper 4 is adhered to the side tube 3 has been described in connection with the example in which the flap rising pieces 5a of the previous example are adhered upward as shown in FIGS. 1 to 5.
As shown in FIGS. 6 and 7, the bottom paper 4 may be bonded in a direction in which the rising piece 5a is lowered downward. In this example, the lower edge of the cup C has a thread bottom shape. Thus, the stabilization of the mounted state of the cup can be measured.

[0022]

The present invention adopts the above-described embodiment, and has the following effects. In the present invention, a substantially arc-shaped strip-shaped blank 1 is rounded in its length direction, and its end portions 1a are adhered to each other with an adhesive portion 2 to form a hollow frustoconical cup-side cylinder 3, and a bottom paper is formed around the small diameter thereof. In making the cup to which the sheets 4 are adhered, a substantially circular notch 6 is formed in a valley 5a of each flap 5 in the bottom paper blank 4a, and the flaps 5 are bent upward from substantially the center of each notch 6 to form a large number. By making the flap rising piece 5b,
The notch peripheral portion 5c below the rising piece 5b of the bottom paper 4 can be rounded in the side cylinder circumferential direction along the bent arc-shaped edge 6a of the notch 6, and this rounded state is referred to as the flap rising piece. By adhering the side cylinder small diameter peripheral surface 3a to 5b, it was possible to ensure smoothness.

Therefore, according to the present invention, no wrinkles or protruding corners are generated due to the bending of the bottom paper flap, and a large number of stacked cups can be easily slid.
Since the air could easily enter between the bottom papers and the side cylinders from the notch 6 of the flap valley 5a, it was extremely easy to separate the individual cups one by one from the stack of many cups. Has an excellent effect.

According to the second aspect of the present invention, in addition to the above-described effects, the flap valley 5a of the bottom paper 4 is expanded as much as possible, so that air can be more easily introduced between a large number of stacked cups. Thus, the effect that the cup can be more easily separated can be added.
According to the third aspect of the present invention, the flap 5 is tapered,
Polymerization due to the overlapping of the bent rising pieces 5b could be prevented, and the effect of good appearance and good usability could be added. According to the fourth aspect of the present invention, since the flap 5 is rectangular, the punching die for the blank 1 can be simplified and the effect of being economical can be added. According to the fifth aspect of the present invention, in addition to the above-described effects, the cup side cylinder 3 can be easily shredded with fingers, and the food in the cup can be easily exposed, thereby making it easier to eat.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cutout of a main part showing an example of an embodiment of a heat-processed food cup according to the present invention.

FIG. 2 is a vertical cross-sectional view showing an example of a heat-processed food cup according to the present invention.

FIG. 3 is a perspective view showing an example of the bottom paper of the cup for cooked food according to the present invention.

FIG. 4 is a developed view showing an example of a bottom paper blank used in a cup for a cooked food according to the present invention.

FIG. 5 is an enlarged vertical sectional view showing an example in which a large number of heat-treated food cups according to the present invention are polymerized.

FIG. 6 is a perspective view of a cutout of a main part showing another example of the cup for cooked food according to the present invention.

FIG. 7 is a longitudinal elevation view of the one shown in FIG. 6;

FIG. 8 is a vertical sectional view showing an example of a conventional paper cup.

FIG. 9 is a vertical sectional view showing an example in which a large number of conventional paper cups are stacked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side cylinder blank 1a End of blank 2 Adhesion part 3 Cup side cylinder 3a Small diameter peripheral surface of cup side cylinder 4 Bottom paper 4a Bottom paper blank 5 Flap formed around bottom paper blank 5a Flap valley 5b Flap rising piece 5c Notch periphery of flap rising piece 6 Notch 6a Bent arc edge of notch

Claims (5)

[Claims] 1. A substantially arc-shaped strip-shaped side cylinder blank 1 is rounded in its length direction, and its ends 1a are adhered to each other by an adhesive portion 2 to form a hollow truncated cone-shaped cup-side cylinder 3. Face 3
In the cup in which the bottom paper 4 is bonded to the base paper 4a, a number of flaps 5 are formed around the outer circumference of the substantially circular bottom paper blank 4a, and a substantially circular notch 6 is formed in a valley 5a of each flap 5, respectively. Each of the flaps 5 is bent upward from substantially the center of the notch 6 to form a flap rising piece 5.
b, the notch peripheral portion 5c of each of the rising pieces 5b is formed along the bent arc-shaped edge 6a of the notch 6 to form a substantially round dish-shaped bottom paper 4 which is rounded in the side cylinder circumferential direction. The side tube small diameter peripheral surface 3a is attached to the flap rising piece 5b of the bottom paper.
To form a heat-processed food cup in which the small-diameter peripheral surface 3a is smoothly rounded in the circumferential direction. 2. The heat-processed food cup according to claim 1, wherein a valley 5a of each of the flaps 5 is expanded as much as possible. 3. The heat-treated food cup according to claim 1, wherein the plurality of flaps 5 are tapered. 4. The heat-treated food cup according to claim 1, wherein the plurality of flaps 5 are formed in a substantially rectangular shape. 5. A perforated cutting line m is formed on the cup side cylinder 3.
The heat-processed food cup according to any one of claims 1 to 4, further comprising: