JP2009062054A - Double cup - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double cup capable of preventing a mischief such as pushing an easily unsealable part to open it when the double cup is used for a packaging container. <P>SOLUTION: In the double cup 1A, an outer cup 2 and an inner cup 3 arranged inside the outer cup 2 are combined with each other so as to form a closed space S1 between the outer cup 2 and the inner cup 3. An easily unsealable part 10 for opening the closed space S1 is provided in a bottom part 7 of the inner cup 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a double cup in which an outer cup and an inner cup disposed inside the outer cup are combined.

  A double cup is widely known in which an inner cup and an outer cup made of paper or plastic are combined so that a closed space is formed below the bottom of the inner cup. In order to be able to easily take out the articles stored in such a closed space without disassembling the double cup, the double cup provided with a notch for picking at the bottom of the outer cup and a perforation that makes a subsequent round. A cup is known. There is also known a double cup provided with a zipper that extends in the circumferential direction with respect to the body portion of the outer cup (see Patent Document 1 and Patent Document 2).

Japanese Utility Model Publication No.59-42363 JP 2004-314987 A

  In the double cups disclosed in these documents, easy-opening portions such as perforations and zippers are provided in the outer cup. Therefore, when such a double cup is used as a product packaging container and displayed in a store or the like, the easy-open portion is exposed on the surface. Thereby, there exists a possibility of inducing mischief, such as pushing in an easy-opening part and opening it.

  Then, an object of this invention is to provide the double cup which can prevent mischief, such as pushing in an easy-opening part and opening it, when used as a packaging container.

  Hereinafter, the double cup of the present invention will be described. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiments.

  In the double cup of the present invention, the outer cup (2) and the inner cups (3, 33) disposed inside the outer cup include a cylindrical body (4, 6, 36) and the body. Each having a bottom (5, 7, 37) that closes one end of the cup, and a closed cup (S1) is formed between the outer cup and the inner cup to form a double cup ( 1A and 1B), the bottom portion of the inner cup is provided with opening means (10, 20) for opening the closed space, thereby solving the above-described problems.

  According to this double cup, since the opening means for opening the closed space is provided at the bottom of the inner cup, the double cup is opened when used as a packaging container containing a predetermined article. Means are not exposed to the outside. Therefore, since access to the opening means from the outside is blocked, it is possible to prevent a tampering that opens the closed space by the opening means.

  In one aspect of the double cup of the present invention, an easy-opening part (10, 20) that makes the bottom part of the inner cup easy to tear may be provided as the opening means. According to this aspect, since it becomes easy to break the bottom portion at the easy-opening portion, the closed space can be opened using the easy-opening portion. In this case, the easy-opening part may be provided with an easy-opening line (11) that extends in the circumferential direction of the bottom part of the inner cup. The easy-open line may have any form as long as the bottom can be easily broken. For example, the easy-open line can be realized by a so-called perforation and a half cut.

  When an easy-opening line that makes a round in the circumferential direction of the bottom portion of the inner cup is provided, the pull-up for lifting the bottom portion of the inner cup in a direction away from the closed space within the range surrounded by the easy-opening line A portion (12) may be provided. In this case, it is easy to open the closed space by pulling up the lifting portion. Moreover, even if the part surrounded by the easy-opening line is separated from the inner cup as the closed space is opened, the part is pulled away from the closed space, so that the part is prevented from falling into the closed space. it can.

  The easy-opening part may include a plurality of easy-opening lines (21) extending in a direction crossing the bottom of the inner cup and intersecting each other. The plurality of easy-opening lines may be in any form as long as the bottom can be easily broken. For example, each of the plurality of easy-opening lines can be realized by so-called perforations, half cuts, or a combination thereof. . In this case, the bottom portion of the inner cup extends so as to connect the end portions of the plurality of easy-open lines to each other, and the bottom portion of the inner cup is easily bent to the side of the closed space ( 23) may be provided. In this case, the portion that is torn after the easy opening line is easily bent toward the closed space by the easy folding line, so that it is easier to open the closed space.

  In one aspect of the double cup of the present invention, the bottom portion of the inner cup is provided with a pulling portion (39) for pulling up the bottom portion of the inner cup in a direction away from the closed space. In the state in which the bottom portion of the inner cup can be separated from the body portion of the inner cup when the bottom portion of the inner cup is pulled up by the lifting portion, the bottom portion of the inner cup is It may be configured by being temporarily fixed to the body portion. According to this aspect, when the bottom portion is pulled up by the lifting portion, the bottom portion is separated from the trunk portion and the bottom of the inner cup is removed, and the closed space is opened. In this aspect, since the bottom portion of the inner cup is removed when the closed space is opened, the opening area becomes larger than when a part of the bottom portion is broken. As a result, there is an advantage that access to the closed space becomes easy.

  Temporary fixing of the bottom part and the body part of the inner cup can be realized in various forms. For example, each of the body portion and the bottom portion of the inner cup is made of paper, a cylindrical folded portion (37a) is provided on the outer periphery of the bottom portion of the inner cup, and the folded portion is When the lower end (36a) of the barrel is folded inward so as to be wrapped, the lower end is tightened in the radial direction over the entire circumference, whereby the bottom of the inner cup is You may temporarily fix to a trunk | drum. In general, a paper cup made of paper is provided with a cylindrical folded portion on the outer periphery of the bottom portion, and the lower end portion of the body portion is folded inward so that the folded portion is wrapped. The bottom portion and the body portion are joined by performing an adhesion method such as thermocompression bonding while tightening in the radial direction. According to this aspect, it is possible to realize temporary fixing between the bottom and the body using the existing equipment for manufacturing the paper cup, by omitting the method of bonding the body and the bottom from the general manufacturing method of the paper cup. For this reason, temporary fixation with a bottom part and a trunk | drum can be implement | achieved easily at low cost.

  In this aspect, the pulling portion is provided such that a pair of cuts (37b) extends toward the folding position (P) in the folded portion, and a portion sandwiched between the pair of cuts is the portion of the folded portion. You may be comprised by bend | folding on the opposite side of the folding direction. In this case, since a part of the folded portion is used as the lifting portion, an increase in the number of parts can be suppressed. Further, since the portion sandwiched between the pair of cuts becomes the lifting portion, no scraps are generated after the through hole is opened as in the case where the through hole is formed in the bottom portion to form the lifting portion. As a result, the lifting portion can be easily realized without causing waste of material.

  As described above, according to the present invention, since the opening means for opening the closed space is provided at the bottom of the inner cup, the double cup was used as a packaging container containing a predetermined article. In some cases, the opening means is not exposed to the outside. Therefore, since access to the opening means from the outside is blocked, it is possible to prevent a tampering that opens the closed space by the opening means.

(First form)
1 and 2 show one embodiment of the double cup of the present invention, FIG. 1 is a front view showing the appearance of the double cup, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. As shown in these drawings, the double cup 1A has an outer cup 2 and an inner cup 3 disposed inside the outer cup 2, and the cups 2 and 3 are combined with each other. Each of the outer cup 2 and the inner cup 3 is configured as a paper cup molded into an inverted frustoconical shape from a paper whose inner surface is covered with a coating layer such as polyethylene. The outer cup 2 is higher than the inner cup 3, and the outer cup 2 has a cylindrical body 4 and a bottom 5 that closes one end of the body 4. Like the outer cup 2, the inner cup 3 has a cylindrical barrel portion 6 and a bottom portion 7 that closes one end of the barrel portion 6. The inner cup 3 is formed with a curled portion 8 in which the upper end portion of the body portion 6 is rounded outward. These cups 2 and 3 are all manufactured by a known paper cup manufacturing method. That is, the body 4 and the bottom 5 of the outer cup 2 are bonded to each other by thermocompression bonding, and the body 6 and the bottom 7 of the inner cup 3 are bonded to each other by thermocompression bonding.

  The outer cup 2 and the inner cup 3 are combined by being bonded to each other with an adhesive in a state where the upper end portion of the outer cup 2 is inserted into the curled portion 8 of the inner cup 2. Thereby, a closed space S <b> 1 surrounded by the body portion 4 of the outer cup 2, the bottom portion 5 of the outer cup 2, and the bottom portion 7 of the inner cup 3 is formed between the outer cup 2 and the inner cup 3.

  The double cup 1A is used as a packaging container in a state where predetermined articles are respectively stored in the closed space S1 and the inner space S2 of the inner cup 3, and the opening of the inner cup 3 is closed by the lid member 9. used. There are no particular restrictions on the articles that can be accommodated in these spaces S1 and S2, but different articles may be accommodated in these spaces S1 and S2. For example, a free gift such as a model can be stored in the closed space S1, and a food such as confectionery can be stored in the internal space S2.

  As shown in FIG. 2, the double cup 1 </ b> A has an easy opening portion 10 as an opening means for opening the closed space S <b> 1 so that an article accommodated in the closed space S <b> 1 can be taken out. It is provided at the bottom 7. The easy-opening part 10 includes an easy-opening line 11 that makes a round in the circumferential direction of the bottom part 7. The easy-open line 11 is formed by a so-called perforation, whereby the bottom portion 7 is easily broken. That is, the easy-open line 11 extends in the circumferential direction with a plurality of cut portions 11a and a plurality of remaining portions 11b arranged alternately. In addition, you may comprise this easy-opening wire 11 by what is called a half cut which cut | notched in the thickness direction of the bottom part 7. FIG. Within the range surrounded by the easy-open line 11, a notch portion 12 as a lifting portion is provided, and the notch portion 12 penetrates the bottom portion 7. The size of the notch 12 is set such that an average user can insert a finger into the notch 12 and hook the bottom 7 with the fingertip.

  According to the double cup 1A, in the state where the opening of the inner cup 3 is used as a packaging container closed by the lid member 9, the easy-opening portion 10 provided on the bottom 7 of the inner cup 3 is exposed to the outside. There is no exposure. Thereby, in the state used as a packaging container, since access to the easy-opening part 10 from the outside is blocked, the mischief which opens the closed space S1 by the easy-opening part 10 can be prevented.

  Moreover, since the notch part 12 is provided in the bottom part 7 of the inner cup 3 in the range surrounded by the easy-open line 11, the opening of the closed space S1 is facilitated. Moreover, even if the part surrounded by the easy-open line 11 is separated from the inner cup 3 with the opening of the closed space S1, the part is pulled up in the direction away from the closed space S1, so that the part is inside the closed space S1. You can prevent falling into.

  Note that the easy-opening portion 10 shown in FIGS. 1 and 2 is only an example, and this can be implemented in various forms. FIG. 3 is a cross-sectional view showing a double cup in which the easy opening portion according to the present invention is replaced with another form. FIG. 3 shows a cross-section of the double cup in the same position of FIG. As shown in FIG. 3, the double cup 1 </ b> A is provided with an easy opening portion 20 as an opening means provided on the bottom portion 7 of the inner cup 3. The easy-opening portion 20 includes two easy-opening lines 21 that extend in a direction crossing the bottom portion 7 and intersect each other. In the illustrated form, the easy-opening lines 21 extend in the radial direction of the bottom portion 7 and intersect each other at an intersection 22 located substantially at the center of the bottom portion 7. Each easy-opening line 21 is configured by a so-called perforation having a cutting part 21a and a remaining part 21b. In addition, the bottom portion 7 is provided with easy-bending lines 23 extending so as to connect the end portions 21c of the easy-opening wires 21. The easy-bending line 23 is a so-called ruled line, and is configured by being embossed from the back side of the paper surface of FIG. Thereby, it becomes easy to bend the bottom part 7 to the closed space S1 side by making the easy fold line 23 into a boundary. According to the form of FIG. 3, when the user presses the center of the bottom portion 7, the bottom portion 7 is broken along each easy-open line 21 around the intersection 22, and the broken portion is bent toward the closed space S <b> 1. . Thereby, the closed space S1 is opened. In the form of FIG. 3 as well, the easy-open portion 20 is not exposed to the outside when used as a packaging container, and access to the closed space S1 is prevented from the outside, as in the form shown in FIGS. The above-mentioned mischief can be prevented. Even if the bottom portion 7 is torn along the easy-open line 21, the torn portion is not separated, so that no dust is generated.

  In addition, in the form of FIG. 3, it is also possible to omit the easy bending line 23. Moreover, each easy-opening line 21 can also be comprised by a half cut instead of a perforation.

(Second form)
Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, about the structure common to 1st form, description is abbreviate | omitted by attaching | subjecting the same code | symbol to these figures. FIG. 4 is a front view showing the appearance of the double cup according to the second embodiment, and FIG. 5 is an explanatory view for explaining a method for manufacturing the double cup of FIG.

  As shown in FIG. 4, the double cup 1 </ b> B is configured by combining the outer cup 2 and the inner cup 33 with each other. The inner cup 33 is made of paper as in the first embodiment, but its configuration and manufacturing method are different. The inner cup 33 has a cylindrical body portion 36 and a bottom portion 37 that closes one end of the body portion 36, and a curled portion 38 that is rounded outward is formed at the upper end portion of the body portion 36. Yes. Both the body part 36 and the bottom part 37 are made of paper. The bottom portion 37 is formed with a tab 39 as a lifting portion for lifting the bottom portion 37 in a direction away from the closed space S1. The body portion 36 and the bottom portion 37 of the inner cup 33 are temporarily fixed so that the bottom portion 37 can be separated from the body portion 36 when the tab 39 is pulled up, and the opening means according to the present invention is configured by the temporary fixing.

  The double cup 1B is manufactured by the following procedure. As shown in FIG. 4, first, a cylindrical folded portion 37 a is provided on the outer periphery of the bottom portion 37 of the inner cup 33. The folded portion 37 a rises from the bent position P substantially perpendicular to the bottom portion 37. Then, a pair of cuts 37b extending to the folding position P is provided in the folded portion 37a, and a tab 39 is configured by bending a portion sandwiched between the pair of cuts 37b to the side opposite to the folding direction.

  Next, the bottom portion 37 subjected to the above processing is disposed at a predetermined position inside the barrel portion 36 formed in a cylindrical shape. And the lower end part 36a of the trunk | drum 36 is bent inward so that the folding | returning part 37a may be wrapped.

  Next, the body part 36 and the bottom part 37 are held in that state, and set in the chuck type fastening device 40. The chuck-type clamping device 40 is disposed on the inner peripheral side of the lower end 36a and is opposed to the entire periphery of the lower end 36a, with a holder 40a that holds the outer peripheral side of the lower end 36a of the body 36 over the entire periphery. Chuck 40b. In a state where the lower end portion 36a is sandwiched between the holder 40a and the chuck 40b of the chuck type tightening device 40, the diameter of the chuck 40b is increased in the direction of the arrow, whereby the lower end portion 36a is tightened in the radial direction over the entire circumference. Thereby, the trunk | drum 36 and the bottom part 37 are temporarily fixed.

  The inner cup 33 having the body portion 36 and the bottom portion 37 temporarily fixed in this manner is arranged inside the separately prepared outer cup 2 and the inner cup 33 and the outer cup 2 are combined with each other, thereby providing a second embodiment. The heavy cup 1B is manufactured.

  The chuck type fastening device 40 is an existing device used for manufacturing a general paper cup. At the time of manufacturing a general paper cup, the body and the bottom are thermocompression-bonded by fastening the lower end of the body in the radial direction with the holder 40a and the chuck 40b heated to a temperature at which the paper coating layer can be melted. . At the time of manufacturing the inner cup 33 described above, the body part 36 and the bottom part 37 are temporarily fixed by setting the holder 40a and the chuck 40b to a normal temperature or a temperature at which they are not sufficiently thermocompression bonded. The temperature is appropriately set so that the bottom portion 37 can be easily separated from the body portion 36 and the bottom portion 37 that are temporarily fixed when the tab 39 is pulled up.

  According to the double cup 1B of the second form, when used as a packaging container, the above-mentioned mischief can be prevented as in the first form. Further, in the double cup 1B, when the bottom portion 37 is pulled up by the tab 39, the bottom portion 37 is separated from the body portion 36 and the bottom of the inner cup 33 is removed, and the closed space S1 is opened. Since the bottom portion 37 of the inner cup 33 is removed when the closed space S1 is opened, the opening area becomes larger than when part of the bottom portion 37 is broken. Thereby, there exists an advantage from which the access to closed space S1 becomes easy.

  As mentioned above, although the preferable form of this invention was demonstrated, this invention is not limited to each above form, You may implement | achieve in various forms. For example, the material and shape of the outer cup and inner cup are not particularly limited within the scope of the present invention. Therefore, the material of these cups may be other than paper, for example, a resin material such as plastic. In addition, when these cups are made of the above-mentioned paper, the paper includes not only pure paper but also those in which different materials such as plastic film and metal film are pasted on the paper surface. It is. Further, the outer cup and the inner cup may be made of materials different from each other without being made of the same material. These cups are not limited to circular cross sections, but may be rectangular.

  Moreover, the easy opening parts 10 and 20 shown in FIG.2 and FIG.3 are only illustrations. For example, an easy opening line as an example of the easy opening portion may be implemented by a perforation or half cut in a wave shape or a saw-tooth shape (notched shape). In this case, there is an advantage that it is difficult for the user to cut the hand at the edge after the bottom of the inner cup is torn. Moreover, the thickness of the bottom part of the inner cup which provides an easy-open line can be made thin, and a bottom part can be made easy to cut along an easy-open line.

  Further, the notch portion 12 as the lifting portion shown in FIG. 2 is merely an example, and for example, a through hole having the same size as the notch portion 12 is provided in a range surrounded by the easy-open line 11, It is also possible to make the through-hole function as a lifting portion.

The front view which showed the external appearance of the double cup which concerns on a 1st form. Sectional drawing along the II-II line of FIG. Sectional drawing which showed the double cup which replaced the easy-opening part which concerns on this invention with the other form. The front view which showed the external appearance of the double cup which concerns on a 2nd form. Explanatory drawing explaining the manufacturing method of the double cup of FIG.

Explanation of symbols

1A, 1B Double cup 2 Outer cup 3 Inner cup 4, 6 Body part 5, 7 Bottom part 10 Easy opening part (opening means)
11 Easy opening line 12 Notch (lifting part)
21 Easy Opening Line 33 Inner Cup 36 Body 36a Lower End 37 Bottom 37a Turned Back 37b Cut 39 Tab (Pull Up)
S1 closed space

Claims (9)

The outer cup and the inner cup disposed inside the outer cup each have a cylindrical barrel portion and a bottom portion that closes one end of the barrel portion, and are closed between the outer cup and the inner cup. In a double cup combined with each other so that a space is formed,
An opening means for opening the closed space is provided at the bottom of the inner cup.   2. The double cup according to claim 1, wherein an easy-opening portion that facilitates tearing of the bottom portion of the inner cup is provided as the opening means.   The double cup according to claim 2, wherein the easy-opening portion includes an easy-opening line that extends in a circumferential direction of the bottom portion of the inner cup.   The double cup according to claim 3, wherein a lifting portion for lifting the bottom portion of the inner cup in a direction away from the closed space is provided within a range surrounded by the easy opening line. .   The double cup according to claim 2, wherein the easy-opening portion includes a plurality of easy-opening lines extending in a direction crossing the bottom portion of the inner cup and intersecting each other.   The bottom portion of the inner cup is provided with an easy fold line that extends so as to connect the ends of the plurality of easy-opening lines to each other so that the bottom portion of the inner cup can be easily bent toward the closed space. The double cup according to claim 5, wherein: The bottom portion of the inner cup is provided with a lifting portion for lifting the bottom portion of the inner cup in a direction away from the closed space,
The opening means is in a state where the bottom portion of the inner cup can be separated from the body portion of the inner cup when the bottom portion of the inner cup is pulled up by the lifting portion, and the bottom portion of the inner cup is The double cup according to claim 1, wherein the double cup is configured by being temporarily fixed to the body portion of the inner cup. Each of the body part and the bottom part of the inner cup is made of paper as a material,
A cylindrical folded portion is provided on the outer periphery of the bottom portion of the inner cup, and the lower end portion extends over the entire circumference in a state where the lower end portion of the body portion is folded inward so as to wrap the folded portion. The double cup according to claim 7, wherein the bottom portion of the inner cup is temporarily fixed to the body portion of the inner cup by being tightened in a radial direction.   The lifting portion is provided so that a pair of cuts extend in the folded portion toward the folded position, and a portion sandwiched between the pair of cuts is folded to the opposite side of the folded direction of the folded portion. 9. The double cup according to claim 8, wherein the double cup is configured.

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