JP2001180646A - Cup for food cooked by heat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent numerous protruding angles from being in contact with an internal surface of a cup overlying outside by reducing a contact area between sidewalls of stacked cups for easily separating the cups one by one from the stack of numerous cups. SOLUTION: An arcuate strip blank 1 is rolled, and ends 1a are stuck to each other to form a hollow truncated circular cone shaped cup sidewall 3. In forming the cup including numerous flaps connected with a periphery on a smaller diameter folded inward and a base sheet stuck, a tapered peripheral surface 4 is formed by evenly narrowing in part the vicinity 3a of the smaller diameter of the sidewall 3, and the base sheet 6 is stuck to folded faces 5a of the numerous flaps 5 connected with the peripheral surface 4 with a vent 5B by a valley 5A of each flap left. In addition, perforated cut lines of a tear-to- open tab may be formed on a side plate of the cup in order to easily tear off the side plate of the paper cup.

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 a cooked food such as a cooked confectionery made of a low-grade paper such as kraft paper or a plastic sheet, in which the lower thin cup side tube is made.

[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
225g / m paper thickness called "base paper" ²Using the above
You. The baked confectionery paper cups are much better than the “cup base paper”
And coarse kraft paper, that is, 40 to 150 g / m²
Thin and rough, easy to tear
Use lower grade paper or plastic sheets.

[0003] That is, the reason why low-grade paper or plastic sheets unsuitable for paper cups are used for cup side tubes for baked confectionery is that low-grade paper such as kraft paper has a long tissue fiber length, and thus has particularly excellent heat resistance. The fact that unbleached kraft paper or 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, and that due to fats and oils flowing into container paper during heating of fats and oils in confectionery species The main reason is that the unevenness of the transparent portion is not noticeable in unbleached kraft paper or PET sheet.

[0004] As a baked confectionery paper cup (paper container) made of low-grade paper, there is the one described in Figs. 1 (b) and 3 (b) in Japanese Utility Model Application Laid-Open No. 50173/1985. In this conventional example, as shown in FIG. 4, a blank 1 in which lower grade paper is formed in a substantially arc-shaped strip 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. A baked food paper cup in which a cup-side cylinder 3 is formed, and a large number of flaps 5 connected to the small-diameter peripheral edge are all bent inward at the upper part of a truncated cone mandrel M as shown in FIG. 5 and a bottom paper 6 is adhered as shown in FIG. It is.

[0005]

The above-mentioned many flaps 5 in this conventional example can be bent inward from the folding line L near the straight line shown in FIG. Flap 5 even when bent with jig
Is not a fold contour along the circle on the upper surface of the mandrel due to the rigidity of the blank 1 and becomes a linear bent edge 5D shown in FIG. As shown in FIG. 5 and FIG.
A large number of protruding corner portions 5C slightly protruding to the outside of about 1 to 0.4 mm are formed as shown in FIGS.

Therefore, after a large number of cups C having corners 5C protruding out of the cup bottom paper 6 are stacked and shipped as shown in FIG. When pulling out and separating cups C one by one,
Since the corner 5C has cut into the inner surface of the outer cup by about 0.1 to 0.4 mm as shown in FIG.
Because it is hard for air to enter between each bottom paper,
There is an essential and serious problem that it is extremely difficult to separate the cups from each other, which significantly impairs the workability.

According to the present invention, in order to eliminate the above-mentioned problems, the cup is formed by bonding the bottom paper to the inner surface of the tapered peripheral surface which is uniformly narrowed inward around the small diameter of the cup-side cylinder expanding upward. In addition to reducing the contact area between the side cylinders of the stacked cups, even if the outer surface of the tapered peripheral surface of the side cylinder at the peripheral edge of the bottom paper has many protruding corners due to the bending of the flaps, these many By preventing the protruding corners from coming into contact with the inner surface of the cup that overlaps on the outside, and by allowing air to enter the gap between the bottom papers from the vents formed by the flap valleys formed on the bottom paper, many cups are formed. It is an object of the present invention to make it easy to separate cups one by one from a stack.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to round a substantially arc-shaped strip-shaped blank in its length direction,
In making a cup side cylinder of a hollow frustoconical shape by bonding the ends together with an adhesive portion, and bending a number of flaps connected to the small diameter periphery inward to make a cup with a bottom paper bonded,
A portion around the small diameter of the cup side cylinder is partially squeezed evenly inward to form a tapered peripheral surface, and a bottom paper is formed on a bent surface of a large number of flaps connected to this peripheral surface, and a ventilation portion by each flap valley is left. This was achieved by bonding. 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.

[0009]

Embodiments of the present invention will be described with reference to the drawings. First, the basic form of the present invention is:
As shown in FIG. 1, a large number of triangular flags are formed on a small-diameter side of a blank 1 in which a lower-grade paper such as thin kraft paper of about 40 to 80 g / m ² or a plastic sheet such as a PET sheet is formed in a substantially arc-shaped strip. 1b, the blank 1 is rounded in the longitudinal direction as shown in FIG. 1 (a), and its ends 1a are adhered to each other with an adhesive 2 or an adhesive 2 by a heat seal or a hollow frustoconical cup. As shown in FIG. 1 (a), a cylinder 3 is formed and put on a mandrel M in the shape of a truncated cone with a two-step upper taper as shown in FIG. 1 (b).

Next, the small diameter periphery 3a of the cup side cylinder 3
Partly and evenly against the upper tapered peripheral surface M1 of the mandrel M with a finger or an inverted round dish-shaped rotary pressing body,
Cup side cylinder 3 as shown in FIG.
A tapered peripheral surface 4 inclined by 2 ° to 5 ° is formed on the inner surface of the mandrel M, and the bent surface 5a of a large number of flaps 5 connected to the end bent edge 5D of the peripheral surface 4 is formed on the mandrel M. The paper 6 and the external bottom paper 6 are bonded together. In this case, the bottom paper one size smaller than that of the flaps 5 is bonded so that the ventilation portion 5B by the valley 5A of each flap 5 remains. As shown in FIGS. 1 (e) and 2, the cup C for a heat-processed food according to the present invention in which the tapered peripheral surface 4 is maintained can be formed.

The bent edge 5D is an edge formed by bending a large number of flaps 5 inward from the bending line L in FIG. 4 connecting the valleys 5A of the flaps 5. Is folded, a large number of the flaps 5 are cut off at equal intervals, or the bonding area of the flaps 5 is reduced. Even if the bottom paper 6 is adhered to the flap bending surface 5a with the size or larger, the ventilation portion 5 formed by the valley 5A of the flap 5
B could be formed.

When a large number of the cups C are stacked as shown in FIG. 3, even if there is a protruding corner 5C due to the bending of the large number of flaps 5 on the periphery of the bottom paper as described above, it is tapered. Since the peripheral edge of the bottom paper is smaller in diameter than the upper edge 4a of the periphery 4, the corner 5C does not contact the inner surface of the cup as shown in FIG. Since air easily enters the gap via the ventilation part 5B, the individual cups can be easily pulled out and taken out from the cup stack. Also, the cup C according to the present invention
Even if a confectionery seed is put in the oven, the confectionery seed is not spilled from the ventilation portion 5B of the bottom paper 6 and is directly baked in a furnace,
Alternatively, when steamed in a steaming pot, the confectionery type is heated and expanded, and the wheat starch in the confectionery type is converted into an edible baked confectionery or steamed confectionery.

That is, the type of confectionery in the cup C, that is, wheat starch occupying the majority of the dough, is gelatinized by heating at 60 ° C. or more, and the bottom paper 6 is also adhered and solidified from the inner surface of the cup side cylinder 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 gap of about 1 to 3 mm or less in the bottom paper 6 due to the ventilation portion 5B, the above-mentioned due to the viscosity of the dough at the time of dough filling or due to the viscosity of the dough after heating and gelatinization of the dough. There is no concern that the dough leaks out of the ventilation part 5B.

[0014] 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. 1D is a perforated cutting line, and a portion indicated by reference numeral 7 in FIG. 1D is for facilitating the cutting of the cup C from the bonding portion 2 in the circumferential direction. In addition, the thickness of the cup C in each of the above drawings is enlarged and exaggerated for easy understanding.

[0015]

The height of the cup C is 60 mm, the opening angle is about 7 degrees with respect to the center line of the cup, the oblique side length of the tapered peripheral surface 4 is about 8 mm, and the inward angle is the cup side cylinder. In the example of FIG. 2 in which the angle is about 3 degrees with respect to 3, the end peripheral surface (lower end peripheral surface) of the tapered peripheral surface 4 facing the peripheral edge of the cup bottom paper 6 is the upper edge of the tapered peripheral surface 4. 8 mm × sin 3 ° = 0.4 with respect to the inner surface of the outer cup-side cylinder 3 contacting up to 4a
Since the diameter is reduced by 2 mm, even if there is a protruding corner 5C due to the bending of a large number of flaps 5 on the end peripheral surface of the tapered peripheral surface 4 around the bottom paper 6, each corner 5C If the protruding length (height) is within the above-mentioned 0.42 mm, as shown in FIG. 3, these many protruding corner portions 5C do not contact the inner surface of the cup side tube 3 on the outer side. Moreover, the separation of the cups is further facilitated by the reduction in the frictional resistance of the joint due to the reduction in the contact area between the adjacent cups corresponding to the tapered peripheral surface 4.

Further, if a large number of irregularities are formed on the side cylinder 3 by embossing, the air can more easily enter between the cup side cylinders of the cup stack, so that the cup separation is further facilitated. .

[0017]

The present invention adopts the above-described embodiment, and has the following effects. The small-diameter periphery 3a of the cup-side cylinder 3 that is widened upward is partially narrowed down further inward to form a tapered peripheral surface 4 and the peripheral surface 4a.
The tapered peripheral surface 4 is preserved by bonding the bottom paper 6 which is slightly smaller by leaving the ventilation portion 5B formed by the valley 5A of each flap on the inwardly bent surface 5a of a large number of flaps 5 connected to the edges of the flap 5. Even if the outer surface has the protruding corner portion 5C formed by bending a large number of flaps 5,
These many protruding corners 5C can be prevented from contacting the inner surface of the cup superposed on the outside, and the tapered peripheral surface 4 reduces the contact area between adjacent cups. Can be reduced, and air can be introduced between the bottom papers 6 through the ventilation portions 5B, so that cups can be separated one by one from a stack of many cups. This has the effect of being able to make it easier.

According to the second aspect of the present invention, since the bottom paper 6 is bonded to both sides of the flap bending surface 5a, the bottom of the paper cup C can be strengthened, and the food dough can be further prevented from being kogated. did it. According to the third aspect of the present invention, it is possible to further easily separate the single cup from the cup stack. In each of the inventions according to claims 4 and 5, in addition to the above-mentioned 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 showing a manufacturing process of a heat-processed food cup according to the present invention.

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

FIG. 3 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. 4 is a developed view showing an example of a conventional blank for a paper cup.

FIG. 5 is a perspective view showing an example of how to make a conventional paper cup.

FIG. 6 is an enlarged vertical sectional view showing an example of a conventional paper cup.

FIG. 7 is an enlarged vertical sectional view showing an example in which many 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 Around small diameter of side cylinder 4 Tapered peripheral surface 4a Upper edge of tapered peripheral surface 5 Flap 5a Flap bent surface 5A Flap valley 5B Vent by flap valley 5C Protruding corner due to flap bending 5D Flap bending edge 6 Bottom paper 7 Knob m Perforated cutting line C Cup M Upper tapered conical mandrel with tapered peripheral surface M1 Upper part of frustoconical mandrel with upper tapered peripheral surface Tapered circumference

Claims (5)

[Claims] 1. A substantially arc-shaped strip-shaped blank 1 is rounded in its length direction, and its ends 1a are adhered to each other with an adhesive portion 2 to form a hollow frustoconical cup-side cylinder 3, which is connected to its small-diameter peripheral edge. In a cup in which a large number of flaps are bent inward and the bottom paper is adhered, the small diameter periphery 3a of the cup side cylinder 3 is partially squeezed evenly inward to form a tapered peripheral surface 4 and connected to the peripheral surface 4 A heat-treated food cup in which a bottom paper 6 is adhered to a bent surface 5a of a large number of flaps 5 while leaving a ventilation portion 5B formed by a flap valley 5A. 2. The heat-treated food cup according to claim 1, wherein the bottom plate 6 is bonded to both sides of the bent surface 5a of the flap 5 while leaving the ventilation portion 5B. 3. The heat-treated food cup according to claim 1, wherein the cup-side cylinder has a large number of irregularities formed by embossing. 4. A perforated cutting line m is formed on the cup side cylinder 3.
The heated food cup according to any one of claims 1 to 3, further comprising: 5. The heat-processed food according to claim 1, wherein a weak point is provided in the adhesive portion 2, and a knob 7 is protruded from an end of the cup-side cylinder connected to the weak point. For cup.