JP2004051158A - Paper cup - Google Patents

Abstract

An object of the present invention is to provide a paper cup in which a volume can be reduced by easily disassembling after use without reducing the compressive strength of the paper cup in a paper cup in which a body member and a bottom member are joined to each other. is there.
The present invention relates to a paper cup having a body member having a body portion that is cylindrically attached to a body attachment portion, and a bottom member, wherein the body attachment portion has an upper edge and a lower edge attached to each other. That the unsealed portion is provided at the edge of the upper edge of the upper portion, and a cutout line is provided at the lower portion of the torso so as to completely orbit the torso along the upper edge line of the joint between the torso member and the bottom member. Characteristic paper cup. Further, a cut or a notch is provided at the end of the cut line on the upper edge of the body sticking portion.
[Selection diagram] FIG.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a paper cup that can be reduced in volume, and more particularly, to a paper cup that can be easily disassembled after use and can be disposed of in a reduced volume.
[0002]
[Prior art]
In recent years, paper cups have been widely used in the field of packaging of foods, beverages, and the like, from the viewpoints of environmental measures such as resource saving, reduction of garbage volume, and recyclability. Furthermore, it has come to be sold as a product filled with contents such as foods and beverages.
[0003]
In recent years, environmental problems have become a major problem, and awareness of protecting the natural environment has been increasing. In particular, the problem of waste disposal is serious, and there is a need for resource saving by using as little material as possible and measures such as recycling, which is the reuse of resources. Against this background, it is also desirable to reduce the volume as much as possible when discarding containers used for packaging.
[0004]
[Problems to be solved by the invention]
However, paper cups made of paper are bulky after use, so they are crushed or peeled off at the joints, dismantled to reduce the volume, and discarded. In particular, there is a problem that it is difficult to disassemble a paper cup using a high-strength paper having a basis weight.
Some cartons are already provided with ruled lines for assisting folding in order to reduce the volume of the carton after use.
[0005]
SUMMARY OF THE INVENTION The present invention has been found to solve the above-described problems. In a paper cup in which a body member and a bottom member are joined to each other, the paper cup is easily disassembled after use without causing a decrease in compressive strength as a paper cup. It is an object of the present invention to provide a paper cup in a form that can be reduced in volume.
[0006]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problems. The present invention is directed to a torso that is cylindrically attached at a torso attaching portion, a top curl portion obtained by bending an upper end side of the torso, and a lower end of the torso being folded inward. And a bottom member having a bottom portion and a bent portion obtained by bending an outer peripheral edge of the bottom portion, wherein the bent portion is provided between the body portion and the folded portion. A paper cup which is sandwiched and joined to each other, wherein an unsealed portion is provided at an edge of an upper edge of the body sticking portion where an upper edge and a lower edge are stuck together, and at a lower portion of the body, A paper cup, wherein a cut line is provided along an upper edge line of a joining portion between the trunk member and the bottom member so as to make a full circumference around the trunk portion. Further, a cut or notch is provided at a tip of the cutout line on the upper edge of the body sticking portion.
[0007]
According to the present invention, the body member and the bottom member are joined to each other, and in a paper cup having a circular upper opening edge and a circular bottom surface, the strength of the body portion is not reduced without causing a decrease in strength as the paper cup. By making the edge of the upper edge part an unsealed part, it is easy to peel off the body sticking part of the body part, and furthermore, a cutout line is provided at the lower part of the body part at the position where the whole circumference of the body part is By making the lower part easy to cut off and separate, a paper cup in a form that can be easily disassembled and reduced in volume after use can be obtained.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a detailed description will be given based on the drawings. FIG. 1 is a perspective view showing an embodiment of a paper cup according to the present invention, FIG. 2 is a partially cutaway sectional view showing an embodiment of the paper cup according to the present invention, and FIG. FIG. 4 is a plan view showing a shape of a body sticking portion of another embodiment, FIG. 4 is a developed view showing a blank of an embodiment of a paper cup according to the present invention, and FIG. 5 is an embodiment of a paper cup according to the present invention. FIG. 6 is a perspective view for explaining the assembling process of FIG. 1, and FIG. 6 is a diagram for explaining the reduction of the volume of an embodiment of the paper cup according to the present invention.
[0009]
FIG. 1 is a perspective view showing an embodiment of a paper cup according to the present invention. The paper cup A according to the present invention is substantially similar in appearance to a normal paper cup, and includes a body member 1 and a bottom member 2 as shown in FIG. A body 11 is attached, and the upper end is curled outward to form a top curled portion 12 which is a circular upper opening edge, and the lower end is folded inward to form a folded portion 13. On the other hand, the bottom member 2 mainly forms a circular bottom surface portion 21, and a circular outer peripheral edge portion is bent downward at a substantially right angle to form a bent portion 22. The joint S between the body member 1 and the bottom member 2 is heat-pressed with the bent portion 22 of the bottom member 2 sandwiched between the folded portion 13 of the body member 1 and the lower end of the body portion 11.
[0010]
Furthermore, in a normal paper cup, as shown in FIG. 2B, the entire portion of the upper edge D1 and the lower edge D2 of the body sticking portion D of the body 11 overlaps with each other by heat sealing. In the paper cup A of the present invention, the unsealed portion M is provided at the edge of the upper edge D1 in the body sticking portion D where the upper and lower side edges D1 and D2 of the body 11 overlap, and the lower portion of the body 11 Is characterized in that a cut-off line L is provided at a position around the trunk 11 from the end of the upper edge D1 of the trunk pasting portion D.
[0011]
The unsealed portion M is provided on the upper edge D1 of the body sticking portion D, but preferably has a width of 3 mm or more so that the body sticking portion D can be easily removed by being picked with a finger. The unsealed portion M has a shape gradually expanding from the lower end to the upper end as shown in FIG. 3-a, and a shape gradually expanding from the lower end to the center or the upper portion as shown in FIG. 3-b. You can also. With this shape, the unsealed portion M can be easily picked. Further, as shown in FIG. 3C, a knob P may be extended above the unsealed portion M. By adopting this shape, the unsealed portion M is further easily gripped, and the upper edge D1 can be easily peeled off from the lower edge D2 in the body sticking portion D. In order to form the upper edge D1 as described above, the blank of the body member 1 is formed in consideration of these shapes.
[0012]
Further, the cutout line L is provided by a ruled line or a half-cut line at a position around the body 11 all around, but is provided in a shape such that the contents do not leak. In particular, in the case of a half cut line, at least the innermost layer is left so that the contents do not leak. As shown in FIG. 2A, the position where the cut line L is provided is above the upper edge line s of the joining portion S that joins the body member 1 and the bottom member 2 at the lower portion of the body portion 11, and Provided along s. Further, it is preferable that the distance is closer to the upper edge line s, that is, less than 10 mm, and preferably less than 5 mm. When the cut line L is provided at a position separated from the upper edge line s of the joint S by 10 mm or more, the strength of the paper cup is reduced, and the shape after disassembly is not preferable in appearance. Further, a notch T as shown in FIG. 2-c or a notch V as shown in FIG. 2-d may be provided at the tip of the cut line L in the unsealed portion M of the upper edge D1 of the body sticking portion D. preferable. The shape of the notch V can be V-shaped, U-shaped, or the like.
[0013]
FIG. 4 is a blank development view of a paper cup according to the present invention. The paper cup A is formed from a body member blank 1A as shown in FIG. 4-a and a bottom member blank 2A as shown in FIG. 4-b. The cutout line L is not provided in the body member blank of a general paper cup, whereas the cutout line L is provided in the body member blank 1A in the paper cup A of the present invention. The position is provided in an arc shape along the upper edge line s of the joint S between the body member 1 and the bottom member 2 in the fan-shaped body member blank 1A.
[0014]
Further, a notch T or a notch V is provided at the end of the upper edge D1 of the body sticking portion D which is the tip of the cut line L so that the cut line L can be easily started to be cut.
[0015]
Next, the configuration of the material used for the paper cup A of the present invention is based on the fact that paper is the main strength material and that the innermost layer has a thermoplastic resin, and has a function of protecting the contents. Also, the outermost layer is preferably made of a thermoplastic resin. Examples of specific material configurations include paper / polyethylene, paper / polypropylene, paper / polyethylene terephthalate, polyethylene / paper / polyethylene, polypropylene / paper / polypropylene, polyethylene / paper / polypropylene, polyethylene / paper / polyethylene terephthalate, Paper / polyethylene / aluminum / polyethylene, polyethylene / paper / polyethylene / aluminum / polyethylene, polyethylene / aluminum / paper / polyethylene, paper / polyethylene / silica-deposited polyethylene terephthalate film / polyethylene, polyethylene / paper / polyethylene / silica-deposited polyethylene terephthalate film / Polyethylene, paper / polyethylene / aluminum-deposited polyethylene terephthalate film / polyethylene, polyethylene / Paper / polyethylene / aluminum-deposited polyethylene terephthalate film / polyethylene, paper / polyethylene / nylon / polyethylene, polyethylene / paper / polyethylene / nylon / polyethylene, paper / polyethylene / silica-deposited nylon film / polyethylene, polyethylene / paper / polyethylene / silica-deposited A laminate such as a nylon film / polyethylene may be used.
[0016]
Note that, as the plastic film to be laminated on the innermost layer or the outermost layer, a uniaxially stretched film having a tear property can be used so that the cutting line L provided on the body 11 of the paper cup A can be easily cut off.
[0017]
As the paper as the main strength material, it is preferable to use cup base paper having good suitability for paper cup molding. The basis weight is not particularly limited, but is preferably in the range of 150 to 350 g / m ² in view of suitability for paper cup molding.
[0018]
FIG. 5 is a diagram illustrating a process of forming the paper cup 1 of the present invention. This molding step is the same as a general paper cup molding step. First, a laminate mainly made of paper is punched out to produce a body member blank 1A and a bottom member blank 2A as shown in FIG. I do. A cutting line L is provided in advance in the trunk member blank 1A in a punching step.
[0019]
Next, the body member blank 1A is wound around a mandrel, and as shown in FIG. 5A, the upper and lower side edges D1 and D2 of the fan-shaped body member blank 1A are bonded to each other by heat sealing or the like to form a body bonding portion D. A so-called body sticking is performed to form an inverted conical tubular body member 1. At this time, the edge of the upper edge D1 is not heat-sealed to the unsealed portion M with respect to the bonded heat-sealed portion N.
[0020]
Next, as shown in FIG. 5B, the bottom member blank 2A is fitted from below the body member 1 with a paper cup forming machine, the adhesive portion is heated with hot air, and the lower end of the body member 1 is folded inward to be folded. As shown in FIG. 5C, the body member 1 and the bottom member 2 are joined together with a bent portion obtained by bending the outer peripheral edge of the bottom member blank 2A sandwiched therebetween.
[0021]
Further, as shown in FIG. 5D, the upper end of the body member 1 is curled outward to form a top curled portion 12, thereby producing the paper cup A of the present invention.
[0022]
FIG. 6 is a diagram illustrating a method of disassembling a paper cup according to the present invention after use. After use, first, the unsealed portion M of the upper edge D1 of the body sticking portion D of the body portion 11 is pinched with a finger, and the upper edge D1 is cut off from the lower edge D2 as shown in FIG. At this time, peel off from the upper part to the lower part. Next, as shown in FIG. 6B, the notch T or the notch V provided at the end of the unsealed portion M of the upper edge D1 of the lower body sticking portion D of the lower portion of the body 11 serves as a starting point. The cutting line L provided at the lower portion is cut off while being torn along the outer periphery of the body portion 11, so that the lower portion of the body portion 11 can be separated, disassembled, and reduced in volume.
[0023]
【The invention's effect】
A paper cup according to the present invention is a paper cup in which a body member and a bottom member are joined to each other, and has a circular upper opening edge and a circular bottom surface portion. By making the edge of the upper edge of the part unsealed, the body sticking part of the body is easy to peel off, and furthermore, a cut line is provided at the lower part of the body at a position where the body is completely wrapped around. By cutting off the lower part of the part and making it easier to separate, there is an effect that it can be easily broken after use to reduce the volume. By reducing the volume of the paper cup, processing such as storage and transportation can be performed efficiently without taking up a large volume at the time of disposal.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a paper cup according to the present invention.
FIG. 2 is a partially cutaway sectional view showing one embodiment of a paper cup according to the present invention.
FIG. 3 is a plan view showing the shape of a body sticking portion of another embodiment of the paper cup according to the present invention.
FIG. 4 is a development view showing a blank of an embodiment of the paper cup according to the present invention.
FIG. 5 is a perspective view illustrating an assembling process of an embodiment of the paper cup according to the present invention.
FIG. 6 is a view for explaining volume reduction after use of an embodiment of the paper cup according to the present invention.
[Explanation of symbols]
A Paper cup 1A of the present invention Body member blank 2A Bottom member blank 1 Body member 2 Bottom member 11 Body 12 Top curl portion 13 Folding portion 21 Bottom portion 22 Bending portion D Body sticking portion D1 Upper edge D2 Lower edge L Cutting line M Unsealed part N Heat sealed part P Knob S Joint part s of body member and bottom member Upper edge line (of joint part S)
T notch V notch

Claims (3)

A torso member having a torso body attached in a tubular shape at the torso attachment part, a top curl part obtained by bending the upper end side of the torso part, and a folded part obtained by folding the lower end of the torso inward.
A paper cup comprising a bottom part and a bottom member having a bent part obtained by bending an outer peripheral edge of the bottom part, wherein the bent part is sandwiched between the body part and the folded part and joined together. So,
An unsealed portion is provided at an edge of an upper edge of the body sticking portion where an upper edge and a lower edge are attached to each other, and an upper edge line of a joining portion between the body member and the bottom member at a lower portion of the body portion. A paper cup provided with a perforated line that makes a full circumference around the body along the line. The paper cup according to claim 1, wherein a cut is provided at a tip of the cut line on the upper edge of the body sticking portion. The paper cup according to claim 1, wherein a notch is provided at a tip of the cutout line on the upper edge of the body sticking portion.

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