JP2003182721A - Volume-reducible paper cup - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conical volume-reducible paper cup comprising a circular upper opening edge and a circular bottom part which is folded to reduce the volume after use, and prevents any degradation of the compression strength as the paper cup. <P>SOLUTION: In the volume-reducible paper cup comprising a barrel part having a cylindrical barrel part, a top curled part with an upper end side of the barrel part folded, and a folded part with a lower end of the barrel part folded inwardly, and a bottom member having a circular bottom surface part and a bent part with an outer circumferential edge part of the bottom surface part folded, with the bent part held between the barrel part and the folded part and joined with each other at a cup bottom edge part, a pair of longitudinal charts are provided on the line with the section passing through the axis of the paper cup intersected with the barrel part, a pair of diagonal charts are provided in the vicinity of an upper end line of the cup bottom edge part in the barrel part from lower ends of the longitudinal charts downwardly in the diagonal direction, and a horizontal chart is provided in an arc shape over the semi-circumference along the upper end line of the cup bottom edge part on one of the lower ends of the longitudinal charts of the width substantially equivalent to the radius of the bottom surface part. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reduced-volume paper cup, and more particularly to a paper cup which can be easily folded after use and discarded with a reduced volume. It is. 2. Description of the Related Art In recent years, paper cups have been widely used in the field of packaging foods and beverages from the viewpoints of environmental conservation such as resource saving, reduction of volume of waste, 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 increased.
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] However, a paper cup made of paper becomes bulky after use, so it is crushed or peeled off at a joint portion, disassembled to reduce the volume and discarded. are doing. This operation is troublesome, and there is a problem that it is difficult to disassemble a paper cup using a paper having a basis weight and a high strength.
Some cartons are already provided with ruled lines for assisting folding in order to reduce the volume of the carton after use. SUMMARY OF THE INVENTION The present invention has been found to solve the above-mentioned problems. In a conical paper cup having a circular upper opening edge and a circular bottom portion, the volume is reduced by folding after use. It is an object of the present invention to provide a volume-reduced paper cup that is possible and does not cause a decrease in compressive strength as a paper cup. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The present invention is directed to a cylindrical body, a top curl having an upper end side bent, A trunk member having a folded portion having a lower end folded inward, a bottom member having a circular bottom portion, and a bent portion having a bent outer peripheral edge of the bottom portion, wherein the trunk portion and the folded portion are provided. And a pair of vertical ruled lines provided on a line where a cross section passing through a central axis of the paper cup intersects the body portion, wherein the vertical ruled line is provided. A pair of diagonal ruled lines are respectively provided diagonally downward on both sides from the lower end to the vicinity of the upper end line of the thread buttocks in the trunk portion, and the yarn is disposed at one end between the lower ends of the vertical ruled lines with a width corresponding to a substantially radius of the bottom portion. Arc along the upper edge line of the buttocks for half a circumference This is a volume-reduced paper cup characterized by providing horizontal ruled lines in a shape. According to the present invention, in a paper cup having a circular upper opening edge and a circular bottom surface portion, a vertical ruled line, a horizontal ruled line, and a diagonal ruled line are provided on a body portion, so that the paper cup can be folded down after use and reduced. Thus, it is possible to obtain a reduced-volume paper cup which can be compacted and does not cause a decrease in compressive strength as a paper cup. [0008] [Embodiment of the invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a volume-reduced paper cup according to the present invention. FIG. 2 is a partially cutaway sectional view showing an embodiment of a volume-reduced paper cup according to the present invention.
FIG. 4 is a development view showing a blank of an embodiment of a volume-reduced paper cup according to the present invention, FIG. 4 is a perspective view illustrating an assembling process of an embodiment of a volume-reduced paper cup according to the present invention, and FIG. 5 is a view for explaining volume reduction of an embodiment of a volume-reduced paper cup according to the present invention. FIG. 1 is a perspective view of an embodiment of a reduced volume paper cup according to the present invention. Volume-reduced paper cup 1 according to the present invention
0, as shown in FIG. 1, the appearance is substantially the same as a normal paper cup, and as shown in FIG. 2, it is composed of a body member 1 and a bottom member 2, and the body member 1 mainly 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 bends the circular outer peripheral edge downward at substantially right angles to form the bent portion 2.
It is 2. The joining of the body member 1 and the bottom member 2
The bent portion 22 of the torso member 1
1 and thermocompression-bonded. This bottom member 2
The portion joined by sandwiching the bent portion 22 is referred to as a thread end portion 3, and the bottom portion 21 is raised. However, as shown in FIG. 1, the body 11 has two vertical ruled lines 14, 14 opposed to each other on a line where a vertical plane (central vertical section) passing through the central axis X intersects (with respect to the central axis X). (Symmetrically with respect to). It should be noted that the opposed vertical ruled line 1
One of 4 and 14 is not shown in FIG. 1 because it is on the body 11 on the opposite side. Further, in this embodiment, the vertical ruled line 14 is provided so as not to extend to the upper end of the body portion 11 but to be at the upper end A below the top curl portion 12 as shown in FIG. . It is preferable to provide the upper end A of the vertical ruled line 14 at a position below the top curl portion 12 without lowering the strength of the paper cup. A substantially bottom portion 21 above the bottom portion 21 is provided.
The body 11 where the horizontal plane of the level corresponding to the radius of
A horizontal ruled line 15 is provided, which horizontally connects the lower ends B, B of the vertical ruled lines 14, 14, and makes a half circle. Further, from the lower ends B, B of the vertical ruled lines 14, 14, which are the intersections of the horizontal ruled lines 15 and the vertical ruled lines 14, 14, two thread bottoms 3 of the body 11 are respectively directed downward on both sides. , A total of four diagonal ruled lines 16, 16, 16, 16 are provided so as to stop near the upper end line L. In this embodiment, the thread end 3 is provided so as to stop at the upper end line L. The oblique ruled lines 16, 16, 16, 16 are the horizontal ruled line 1
The angle between the oblique lines 16 and 16 extending from the lower end B is approximately 90 degrees. Further, the oblique ruled lines 16, 16, 1
The lower ends C of the oblique ruled lines 16, 16, 16, 16, which are the intersections of the upper end lines L of the yarn end portions 3 in the body 11,
C, C, and C have a total of four points, and these four points are positioned so as to divide the upper end line L of the thread tail 3 into approximately four equal parts. FIG. 3 is an exploded view of a blank of the reduced volume paper cup according to the present invention. As shown in FIG. 3, the reduced volume paper cup A is formed from a trunk member blank 1A and a bottom member blank 2A. Whereas a ruled line is not provided in the body member blank of a general paper cup, various ruled lines are provided in the body member blank 1A in the volume-reduced paper cup A of the present invention. In the fan-shaped trunk blank 1A, first,
Two vertical ruled lines 14, 14 toward the center point O of the vertical fan shape
Is provided. The vertical ruled lines 14 are provided symmetrically with respect to the central axis X when the reduced volume paper cup A is formed. The upper end A of the vertical ruled lines 14, 14,
A is a position above or below the boundary M with the region where the top curl portion 12 is formed. Next, the horizontal ruled line 15 indicates that the volume-reduced paper cup A
Along the upper end line L of the yarn end 3 of the body 11 at the time of molding, the vertical ruled line 1 is formed in an arc with a width corresponding to a substantially radius of the bottom 21.
It is provided between the lower ends B, B of 4, 14. Further, from the lower ends B, B of the vertical ruled lines 14, 14, the body 11
, A total of four diagonal ruled lines 16, 16, 16, 16 are provided so as to stop at the upper end line L of the thread end portion 3 at. The diagonal ruled lines 16, 16, 16, 16 have an angle of approximately 45 degrees with respect to the horizontal ruled line 15 and its extension, and therefore, the two diagonal ruled lines 16, 16 coming out from the lower end B have approximately 90 degrees. ing. It is preferable to avoid providing the vertical ruled line 14, the horizontal ruled line 15, and the oblique ruled line 16 on the body sticking portion of the body 11 of the reduced volume paper cup A. When these ruled lines are provided on the body sticking portion, it becomes difficult to bend. Next, the composition of the material used for the volume-reduced 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. Also, the outermost layer is preferably made of a thermoplastic resin. The innermost layer has the function of protecting the contents. Examples of specific material configurations include paper / polyethylene, polyethylene / paper / polyethylene, polypropylene / paper / polypropylene, 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 nylon film /
Examples include polyethylene. As the paper as the main strength material, it is preferable to use a cup base paper having good suitability for forming a paper cup. Although the basis weight is not particularly limited, it is 15
The range of 0 to 350 g / m ² is preferred. FIG. 4 is a view for explaining a step of forming the reduced-volume 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. Is done. Next, this trunk member blank 1A is wound around a mandrel, and as shown in FIG. 4A, both side edges of the fan-shaped trunk member blank 1A are laminated by heat sealing or the like. It is formed into a conical cylindrical body member 1. Then, as shown in FIG. 4B, 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. As shown in FIG. 4C, the body member 1 and the bottom member 2 are joined together with a bent portion formed by bending the outer peripheral edge of the bottom member blank 2A. Further, as shown in FIG.
Is curled outward to form a top curl portion 12 to produce a paper cup. Finally, as shown in FIG. 4-e, the contents 5 are filled in the filling maker, and the lid 4 is sealed. FIG. 5 is a view showing a folded state of a reduced-volume paper cup according to the present invention. 5A and 5B are front views, and FIG. 5C is a side view. In the volume-reduced paper cup 10 according to the present invention, the portion above the horizontal ruled line 15 bends the opposing vertical ruled lines 14 and 14 as shown in FIG. Then, it spreads out to the left and right and folds flat to be crushed. Next, as shown in FIG. 5B, the bottom portion is bent outward by a horizontal ruled line 15 whose bottom is substantially linearly deformed, and the horizontal ruled line 15 and the oblique ruled lines 16 and 1 are bent.
6, 16 and 16 are all linked, and the bottom part is shown in FIG.
Can be folded into the shape shown in FIG. As a result, the volume becomes the first 1/5 to 1/10, which can contribute to the reduction of the environmental load. According to the present invention, two vertical ruled lines vertically opposed to the body of the paper cup and a horizontal horizontal ruled line at a predetermined level of the body are provided. By providing a diagonal ruled line diagonally downward from the intersection of the ruled lines to the vicinity of the upper end line of the thread end of the body, the body is crushed flat, and the entire paper cup is folded by pushing the bottom part down to one side. Therefore, it is possible to provide a paper cup excellent in the disposability by volume reduction in a form in which the compression strength of the paper cup does not decrease. 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 one embodiment of a volume-reduced paper cup according to the present invention. FIG. 2 is a partially cutaway sectional view showing one embodiment of a reduced volume paper cup according to the present invention. FIG. 3 is a development view showing a blank of an embodiment of a volume-reduced paper cup according to the present invention. FIG. 4 is a perspective view for explaining an assembling process of one embodiment of the volume-reduced paper cup according to the present invention. FIG. 5 is a view for explaining volume reduction of an embodiment of a volume-reduced paper cup according to the present invention. [Description of Signs] 10 Volume-reduced paper cup 1A Body member blank 1B Bottom member blank 1 Body member 2 Bottom member 3 Thread end 4 Cover material 5 Contents 11 Body 12 Top curl part 13 Folding part 14 Vertical ruled line 15 Horizontal ruled line 16 Diagonal ruled line 21 Bottom part 22 Bend A (vertical ruled line) Upper end B (vertical ruled line) Lower end C (diagonal ruled line) Lower end L Thread end portion upper end line M Top line curl boundary line N Lower end of trunk Line O Center point X of the sector in the body member blank

Claims (1)

Claims 1. A torso member having a cylindrical body, a top curl portion formed by bending an upper end of the body, and a folded portion formed by bending a lower end of the body inward. A bottom member having a circular bottom portion and a bent portion obtained by bending an outer peripheral edge portion of the bottom portion, wherein the bent portion is sandwiched between the body portion and the folded portion, and a yarn end portion is provided. A pair of vertical ruled lines are provided on a line where a vertical plane passing through the central axis of the paper cup intersects the body, and a pair of diagonal ruled lines are respectively obliquely downwardly on both sides from a lower end of the vertical ruled line. Provided up to the vicinity of the upper end line of the yarn end in the trunk, and over a half circumference along the upper end line of the yarn end to one side between the lower ends of the vertical ruled lines with a width corresponding to a substantially radius of the bottom part. Reduced volume paper cuts characterized by arc-shaped horizontal ruled lines H.