JP4899694B2 - Double container manufacturing method - Google Patents

Description

  The present invention relates to a method of manufacturing a double container that joins an outer container and an inner container disposed inside the outer container.

  It has a cup-shaped inner container and an outer container made of paper or plastic, accommodates a relatively small inner container in a relatively large outer container, and is integrated with each other at the upper edge of the opening of each container A double container is known (Patent Document 1). In the double container, a storage space is formed below the inner container by the inner container and the outer container, and the storage space is used for storing different types of articles different from the articles stored in the inner container. Then, on the peripheral wall of the outer container, two perforations extending along the circumferential direction are provided to form a strip-shaped cut piece. By pulling up the cut piece and separating it from the outer container, the double container is separated into an upper double container and a lower container. As a result, access such as taking out the dissimilar article stored in the storage space below the inner container is possible while the article is still stored in the inner container.

Japanese Patent Laid-Open No. 4-201873

  In general, a container made of paper or the like is provided with a curled portion whose upper end is rounded outward. This curled portion is generally formed by pushing a mold member having a circular arc-shaped groove extending in an annular shape into the open end of the container. Such a curled portion may be crushed in the vertical direction of the container. For example, when a lid is attached to a container having a curled portion, the curled portion and the lid portion are sandwiched between predetermined members with the lid portion placed on the curled portion, and the curled portion is placed in the vertical direction of the container. Apply the lid to the curl while crushing. In the case of the above-described double container, if the curled part and the upper end of the outer container are joined to be adjacent to each other before the curled part of the inner container is crushed, the curled part is then crushed, The lower surface of the container is lifted to form a gap between the upper end of the outer container and the curled portion. Thereby, the surface of the trunk | drum of an inner container may be exposed from the clearance gap, and there exists a possibility that the malfunction on an external appearance may arise.

  Then, an object of this invention is to provide the manufacturing method of the double container which can prevent that a clearance gap generate | occur | produces between the upper end of the outer container of a double container, and the curl part of an inner container.

  Hereinafter, the double container 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 embodiment.

The method for producing a double container according to the present invention includes an outer container (10) and an inner container disposed inside the outer container, having a curled part (23) whose upper end of the body part (21) is rounded outward. (20) is a method of manufacturing a double container, comprising the step of joining the upper end of the outer container adjacent to the curled portion of the inner container, and before the step of joining, the inner container A step of crushing the curled portion with respect to the vertical direction of the inner container. In the crushing step, a lid portion (30) is placed on the curled portion, and the curled portion and the sandwiching a lid portion, the paste it to the lid while crushing the curled portion in the vertical direction of the inner container, to solve the problems described above.

  According to this manufacturing method, when the upper end of the outer container is adjacent to the curled portion of the inner container and these containers are joined, the curled portion of the inner container is already crushed. Even if the curled portion is sandwiched between the outer container and the inner container after the outer container and the inner container are joined, the curled portion is not further crushed. Accordingly, the curled portion of the inner container and the upper end of the outer container can be held adjacent to each other, and a gap can be prevented from being formed between them.

Further, by sandwiching a mosquito Lumpur portion and the lid portion at a predetermined member put a lid on top of the curled portion, since the paste crush One One lid in the vertical direction of the inner container mosquitoes Lumpur unit , Ru can paste a lid at the same time as it crushed the curl portion. Thereby , the number of processes can be reduced.

  In the manufacturing method of the present invention, the configuration of the upper end of the outer container is not particularly limited, and the upper end thereof may have a curled portion similar to the inner container. 11) having a single end portion (13) cut with a single upper end, and in the joining step, the single end portion of the outer container is adjacent to the curled portion of the inner container, and You may join a container and the said inner container. In this case, a double container can be obtained in which the body of the outer container appears to extend from the curl of the inner container. That is, since the two containers are combined, it looks like one container, so that the user does not feel uncomfortable in appearance.

  In the manufacturing method of this invention, the process of apply | coating an adhesive agent (5) to the internal peripheral surface of the said outer container may be provided before the said process to join. According to this aspect, in the process of combining the outer container and the inner container after the adhesive is applied, even if the body portion of the inner container and the adhesive are in contact with each other, the adhesive is caused to flow inside the outer container. Not too much. Therefore, it is possible to avoid problems in appearance such as the adhesive being rubbed into the outer container and protruding outside. In particular, in the case where the outer container has a single end portion, when the adhesive is applied to the outside of the body portion of the inner container, it becomes easier to spread the adhesive at the single end portion. Therefore, when the outer container has a single end portion, it is particularly effective to adopt this coating process.

  In the manufacturing method of the present invention, the outer container has an easy-opening portion that extends along the circumferential direction of the body portion, and each of the outer container and the inner container has a lateral width that extends from the bottom toward the upper end. And the outer container and the inner container are configured such that the width of the inner container in the direction of the width is greater than the width of the outer container in the direction of the width. Also good. According to this aspect, the strength of the outer container is reduced at the easy opening portion, but the inner container is easily fitted inside the outer container. Therefore, it is possible to prevent the outer container from being deformed due to an excessive force acting on the easy opening portion when the inner container is fitted inside the outer container. Moreover, according to this aspect, when joining an outer container and an inner container with an adhesive agent, it can also suppress that an adhesive agent adheres other than a joining location.

  As described above, according to the present invention, since the curled portion of the inner container is crushed before the outer container and the inner container are joined, the curled portion of the inner container is joined after the outer container and the inner container are joined. And the upper end of the outer container can be held adjacent to each other, and a gap can be prevented from being formed between them.

  1 and 2 show an embodiment of the double container of the present invention, FIG. 1 is a perspective view showing the appearance of the double container, and FIG. 2 is a sectional view taken along line II-II in FIG. 3 is a partially enlarged view in which the portion A in FIG. 2 is enlarged. As shown in these drawings, the double container 1 has an outer container 10 and an inner container 20 disposed inside the outer container 10, and these containers are joined to each other. Each of the outer container 10 and the inner container 20 is a cup-shaped paper container that is obtained by rolling a flat paper of a predetermined shape and assembling into an inverted truncated cone shape. That is, each of the outer container 10 and the inner container 20 has a shape in which the lateral width increases in the direction from the bottom toward the upper end. And the breadth of the width of the inner container 20 in the same direction is configured to be larger than the breadth of the width of the outer container 10.

  The outer container 10 has a trunk portion 11, a circular bottom portion 12 provided at the lower end of the trunk portion 11, and a single end portion 13 in which the upper end of the trunk portion 11 is cut in a single state. The single end portion 13 extends linearly in the vertical direction of the outer container 10. More specifically, the upper end of the body portion 11 is positioned on a straight line having an inclined side surface and is cut by a horizontal plane. On the other hand, the inner container 20 has a barrel portion 21, a circular bottom portion 22 provided at the lower end of the barrel portion 21, and a curl portion 23 in which the upper end of the barrel portion 21 is rounded outward. On the upper surface of the curled portion 23 of the inner container 20, a lid portion 30 formed by laminating an aluminum sheet and paper is attached with a strength capable of being opened. Thereby, the accommodation space 25 of the inner container 20 is sealed. The dimension of the outer container 10 in the height direction is larger than the dimension of the inner container 20 in the height direction. Therefore, by arranging the inner container 20 to be fitted inside the outer container 10 and joining the outer container 10 and the inner container 20 to each other, an accommodation space 15 as a closed space is formed below the inner container 20. The

  The details of the method for manufacturing the double container 1 will be described later. As shown in FIG. 3, the outer container 10 and the inner container 20 are formed by curling the curled portion 23 of the inner container 20 in the vertical direction. The bonding portion 3 is disposed between the upper end inner peripheral surface of the body portion 11 of the outer container 10 and the upper end outer peripheral surface of the body portion 21 of the inner container 20 so that the portion 23 and the single end portion 13 of the outer container 10 are adjacent to each other. Are joined to each other so as to intervene. In other words, the outer container 10 and the inner container 20 are joined together with the curled portion of the outer container 10 omitted. Thereby, it seems that the trunk | drum 11 of the outer container 10 extends from the curl part 23 of the inner container 20. FIG. That is, since the two containers are combined but look like one container, the user does not feel uncomfortable in appearance.

  The two storage spaces 15 and 25 formed in the double container 1 can each store predetermined articles. There are no particular restrictions on the articles accommodated in the two accommodating spaces 15 and 25, but articles different from each other may be accommodated in these. For example, food F such as confectionery may be stored in the storage space 25, and prizes P that are non-food such as figures, models, and accessories may be stored in the storage space 15 (see FIG. 4). On the contrary, the prize P may be stored in the storage space 25 and the food F may be stored in the storage space 15. Further, different foods different from each other may be stored in the two storage spaces 15 and 25.

  The outer container 10 is provided with a belt-like zipper portion 14 as an easy-opening portion that extends along the circumferential direction of the body portion 11. The zipper part 14 is formed so as to go around the trunk part. As shown in FIG. 1, the zipper part 14 is configured by forming a plurality of discontinuous cuts 14 a each in a row in the vertical direction, and the part where the zipper part 14 is provided is another part of the body part 11. The strength is weaker than. As shown in FIG. 4, a grip portion 14 b is provided at one end of the zipper portion 14 so that the user can grip it. By pulling the knob 14b in the direction of the arrow a in FIG. 4 while the user picks it, the body 11 of the outer container 10 is separated into upper and lower parts and accommodated in the accommodation space 15 as shown in FIG. The prize P can be taken out. In this case, the lid 30 that seals the accommodation space 25 may remain closed. That is, the storage space 15 formed below the inner container 20 can be opened in a state where the food F as an article is stored in the storage space 25 of the inner container 20.

  As shown in FIGS. 1 and 2, in the double container 1, the outer container 10 and the inner container 20 are arranged such that the zipper part 14 is located above the lower edge 24 that continues around the bottom 22 of the inner container 20. Are joined. For this reason, even if the zipper part 14 is pushed in, the inner container 20 is located on the back side of the zipper part 14, and the zipper part 14 is supported by the inner container 20. Therefore, breakage of the container with the zipper portion 14 as a boundary is suppressed. In particular, when the prize P is accommodated in the accommodation space 15 opened by the zipper part 14, there is a tendency to increase the mischief of destroying the zipper part 14 for the purpose of confirming the contents of the prize P or illegal removal. . The double container 1 is an effective measure in such a case. Moreover, even if force is applied to the zipper part 14 during distribution, the zipper part 14 is not damaged.

  FIG. 6 shows a part of the side surface of the double container 1. As shown in FIG. 6, the body portion 11 of the outer container 10 has an adhesive margin portion 26 extending in the vertical direction. The body portion 11 of the outer container 10 is configured by joining both ends of a planar paper material processed into a predetermined shape as described above in a state where the both ends are overlapped at the position of the adhesive margin portion 26. The knob portion 14 b of the zipper portion 14 is provided at the position of the adhesive margin portion 26. Of the margin portion 26, the area AR1 in which the knob portion 14b is provided has a lower bonding strength than the other area AR2. For this reason, it becomes easy to peel the knob | pick part 14b, and the operativity of the zipper part 14 improves.

  Various methods can be adopted as a method of weakening the bonding strength in the region AR1 as compared with the other regions AR2. For example, when heat sealing is used as a bonding method, a bonding inhibitor such as an anti-heat sealing agent is applied to the back side of the knob portion 14b, and the heat seal bar extending in the longitudinal direction of the adhesive margin portion 26 thereon. By performing thermocompression bonding while heating with a heating element such as the above, the bonding strength of the area AR1 can be weaker than that of the other area AR2. In this case, it may replace with the back surface side of the knob | pick part 14b, and may apply | coat or print a bonding inhibitor on the surface which the knob | pick part 14b opposes. Further, as a method of not applying the bonding inhibitor, the heating of the area AR1 is weakened by cutting away the part corresponding to the area AR1 of the heating element such as a heat seal bar and thermocompression bonding with the heating element configured in this way. Thus, the bonding strength of the area AR1 can be weaker than that of the other area AR2. In the method of joining by blowing hot air, the bonding strength of the area AR1 can be made weaker than that of the other area AR2 by selectively blowing the hot air to the area AR2 except for the area AR1. In addition, in the joining method by heat sealing, the method of applying the above-mentioned joining inhibitor and the method of not applying this can be used in combination.

(About manufacturing method)
Next, with reference to FIGS. 7A to 7F and FIGS. 8A to 8E, a method for manufacturing a product in which articles are stored in the double container 1 will be described together with a method for manufacturing the double container 1. In the following description, food F is stored in the storage space 25, and prize P is stored in the storage space 15.

  7A to 7F show a first form of the double container 1 and a method for manufacturing a commodity in which a predetermined article is stored in the double container 1. FIG. 7A shows a process of crushing the curled portion 23 of the inner container 20 in the vertical direction of the container. First, an empty inner container 20 is prepared, and this inner container 20 is installed in an apparatus for crushing the curled portion 23. Here, as a device for crushing the curled portion 23, a lid material sticking device 4 for sticking a lid portion 30 described later is used. The lid material affixing device 4 includes a plate-like retainer 41 that supports the curled portion 23 at the edge of the round hole 41a, and a pressurizing member 42 that includes a pressurizing surface 42a facing the retainer 41. The lid material affixing device 4 is normally used for affixing the lid part 30 (see FIG. 7F), but it is sufficient if the curl part 23 can be crushed in the process of FIG. Therefore, so-called idle driving is performed by the lid material sticking device 4. That is, as shown in FIG. 7A, the pressing member 42 is pressed against the entire circumference of the curled portion 23 without providing the lid portion 30, and the curled portion 23 is crushed in the vertical direction of the inner container 20.

  Before or after the step of FIG. 7A or in parallel with this step, the prize P is accommodated in the outer container 10 as shown in FIG. 7B. Next, as shown in FIG. 7C, the adhesive 5 is applied to the inner peripheral surface of the upper end of the trunk portion 11 of the outer container 10 in which the prize P is stored. Note that the prize P may be accommodated in the outer container 10 after the step of FIG. 7B and the step of FIG. In the step of FIG. 7C, the adhesive 5 is appropriately selected. For example, various adhesives such as hot melt type and emulsion type may be used. Since the inner surface of the paper cup is often coated with polyethylene, in such a case, a hot melt adhesive may be used. Moreover, it can also adhere | attach by heat sealing using such a polyethylene coat. The adhesive 5 may be applied discretely with respect to the circumferential direction of the body portion 11 as shown, or may be applied in a strip shape so as to make a round with respect to the circumferential direction. When the adhesive 5 is applied discretely, it is preferable that the intervals in the circumferential direction of the application positions are equal as shown in the figure. The number of application positions may be four as shown in the figure, or may be three or five. As shown in FIG. 7C, when the adhesive 5 is applied to the inner peripheral surface of the body 11, the body 21 and the adhesive 5 of the inner container 20 are then combined in the process of combining the outer container 10 and the inner container 20. Even in the case of contact, the adhesive 5 flows only inside the trunk portion 11 of the outer container 10. Therefore, it is possible to avoid problems in appearance such as the adhesive 5 being rubbed by the outer container 10 and protruding outside.

  Next, as shown in FIG. 7D, the inner container 20 in which the curled portion 23 is crushed in the process of FIG. 7A and the outer container 10 to which the adhesive 5 is applied in the process of FIG. 7B are combined. Since the inner container 20 has undergone the process of FIG. 7A, the vertical width L of the curled portion 23 is shorter than the vertical width L0 before being crushed by Δ. The outer container 10 and the inner container 20 are joined so that the lower surface of the curled portion 23 thus crushed and the single end portion 13 of the outer container 10 abut each other. Thereby, the double container 1 in which the prize P is accommodated in the accommodation space 15 is completed. When combining the outer container 10 and the inner container 20, the inner container 20 may be fixed and the outer container 10 may be pushed in. Alternatively, the outer container 10 may be fixed and the inner container 20 pushed in. When the outer container 10 or the inner container 20 is pushed in, it is preferable that the center line of the outer container 10 and the center line of the inner container 20 are kept in alignment. By doing so, it is possible to prevent the adhesive 5 applied to the inner peripheral surface of the outer container 10 from contacting the outer peripheral surface of the inner container 20 unnecessarily.

  Next, as shown to FIG. 7E, the foodstuff F is accommodated in the accommodation space 25 of the double container 1 obtained by FIG. 7D. Next, the lid 30 is stuck to the double container 1 using the lid material sticking device 4. That is, the double container 1 is mounted on the retainer 41 with an adhesive interposed between the lid part 30 and the curl part 23, and then the pressure member 42 is simultaneously pressed against the entire circumference of the curl part 23. The part 30 and the curled part 23 are joined. Thus, the storage space 25 is sealed in a state where the food F is stored in the storage space 25. In this case, since the curled portion 23 is crushed in the process of FIG. 7A, even if the pressing member 42 is pressed against the curled portion 23, the curled portion 23 is not further crushed. As described above, a product in which different kinds of articles are accommodated in separate spaces of the double container 1 is completed. This form is suitable when each process of accommodation of the prize P, accommodation of the food F, and joining of the outer container 10 and the inner container 20 is performed in the same place (factory or the like). In the process shown in FIG. 7A, the curl portion 23 of the inner container 20 is crushed by using the lid material affixing device 4 used for affixing the lid portion 30, but a dedicated process for crushing the curl portion 23 is used. You may implement the process of FIG. 7A using an apparatus.

  8A to 8E show a second form of the double container 1 and a method of manufacturing a commodity in which a predetermined article is stored in the double container 1. First, as shown in FIG. 8A, an empty inner container 20 is prepared, and the food F is stored in the storage space 25 of the inner container 20. Next, as shown in FIG. 8B, the lid 30 is pasted using the lid material pasting device 4. That is, first, the inner container 20 containing the food F is placed on the retainer 41 of the lid material affixing device 4, and the pressure member 42 is placed with the adhesive interposed between the curl portion 23 and the lid portion 30. The lid portion 30 and the curl portion 23 are joined together while pressing the curl portion 23 simultaneously to crush the curl portion 23. Thereby, the accommodation space 25 of the inner container 20 is sealed, and at the same time, the curled portion 23 is crushed in the vertical direction of the inner container 20. In this embodiment, since the lid 30 and the curl 23 are sandwiched between the retainer 41 and the pressure member 42 and the lid 30 is attached, the retainer 41 and the pressure member 42 function as predetermined members.

  The processes shown in FIGS. 8C and 8D are respectively performed before or after the processes of FIGS. 8A and 8B. The process of FIG. 8C is the same as the process of FIG. 7B, and the process of FIG. 8D is the same as the process of FIG. 7C, so description of these processes is omitted.

  Next, as shown in FIG. 8E, the inner container 20 that has undergone the process of FIG. 8B and the outer container 10 to which the adhesive 5 has been applied in the process of FIG. 8D are combined. That is, the inner container 20 has undergone the process of FIG. 8B, the lid portion 30 and the curled portion 23 are joined, and the vertical width L of the curled portion 23 is shorter by Δ than the vertical width L0 before being crushed. It has become. The outer container 10 and the inner container 20 are joined so that the lower surface of the curled portion 23 thus crushed and the single end portion 13 of the outer container 10 abut each other. As described above, at the same time when the double container 1 is completed, a product in which different kinds of articles are accommodated in separate spaces of the double container 1 is completed. In this form, the inner container 20 that has undergone the process of FIG. 8B is in a state where the food F is sealed, so that its transportation is relatively free. Therefore, this form is suitable when the place (factory or the like) where the food F is accommodated is geographically separated from the place where the prize P is accommodated and each container is joined. In addition, the work environment is advantageous in that it does not have to be managed so strictly in the processes after FIG. 8C. Since this form can crush the curled part 23 of the inner container 20 at the same time that the cover part 30 is attached, there is an advantage that the number of steps can be reduced as compared with the first form shown in FIGS. 7A to 7F.

  According to each form of the above manufacturing method, after the curled portion 23 of the inner container 20 is crushed, the outer container 10 and the contents are arranged so that the single end portion 13 of the outer container 10 abuts against the lower surface of the curled portion 23. The container 20 is joined. When the outer container 10 and the inner container 20 are joined by such a procedure, the curled portion 23 of the inner container 20 is not further crushed in the subsequent process. If the above procedure is not followed, the outer container 10 and the outer container 10 are brought into contact with the lower surface of the curled portion 23 without collapsing the curled portion 23 of the inner container 20 as shown in FIG. When the inner container 20 is joined, the curled portion 23 is then crushed when the lid portion 30 is pasted, so that the lower surface position of the curled portion 23 is lifted upward from the state indicated by the imaginary line and the outer container is placed. A gap G is formed between the single end portion 13 and the curled portion 23. As a result, the surface of the body portion 21 of the inner container 20 is exposed from the gap G. In each form of the above manufacturing method, such an adverse effect can be surely prevented (see FIG. 3).

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to the above form, You may implement | achieve in various forms. For example, the material and shape of the outer container and the inner container are not particularly limited. Therefore, these containers may be made of a material other than paper, for example, a resin material such as plastic. In addition, these containers are not composed only of paper, but may be composed of a laminated material in which a different material such as a plastic film or a metal film is pasted on the surface of the paper. You may comprise what impregnated the chemical substance and provided water resistance and oil resistance. In addition, the outer container and the inner container may not be formed of the same material, and the materials may be different from each other. These containers are not limited to those having a circular cross section, but may have various shapes such as an elliptical shape, a polygonal shape, and a rectangular shape. Moreover, these containers do not have a shape in which the lateral width of the body portion widens in the direction from the bottom portion toward the upper end like the inverted truncated cone shape described above, and the lateral width of the body portion may be constant in the same direction. Moreover, the breadth of the inner container body may be the same as the outer container. When the inner container and the outer container are configured so that the breadth of the inner container in the same direction is larger than the breadth of the outer container, as in the above embodiment, It is easy to fit the inner container, and there is an advantage that it is possible to suppress the problem that the adhesive adheres to other than the joining portion when the outer container and the inner container are joined by the adhesive.

  The easy-opening portion of the present invention may be realized by various known means in addition to the zipper portion 14 described above. For example, the easy-opening portion may be realized by perforations in which discontinuous cuts are formed in a line along the circumferential direction of the body portion of the outer container. In this case, by twisting the lower part of the outer container, the outer container can be separated vertically from the perforation. In addition, the easy-opening portion can be realized by so-called half-cutting in which the body portion is not cut completely by cutting and is cut in the middle. In this case, two rows of half cuts may be provided in the vertical direction to form a band, or one half cut may be provided in the same direction.

  As shown in FIG. 10, the double container 1 is manufactured by applying the adhesive 5 to the outer peripheral surface of the upper end of the body 21 of the inner container 20, and then joining the outer container 10 and the inner container 20. Also good. In this case, there is no possibility that the premium 5 to be stored in the storage space 15 formed below the inner container 20 before the outer container 10 and the inner container 20 are joined is contaminated by the adhesive 5.

  Further, when the outer container 10 and the inner container 20 are joined, they may be joined in any direction. 7D and 8E, the outer container 10 is placed on a placing means such as a belt conveyor or a workbench in the direction shown in the drawing, and then the inner container 20 is overlaid from the upper side of the outer container 10. Alternatively, the inner container 20 may be placed on the placing means in the direction opposite to the illustrated direction, and then the outer container 10 may be covered from the upper side of the inner container 20 in the opposite direction. May be joined. Furthermore, these may be joined with the outer container 10 and the inner container 20 oriented in the horizontal direction, or they may be joined with the outer container 10 and the inner container 20 inclined with respect to the horizontal direction. Good. When the outer container 10 and the inner container 20 are joined in the upside down direction with respect to the directions of FIGS. 7D and 8E, the prize P may be accommodated, for example, as shown in FIG. That is, the inner container 20 is installed upside down, and the prize P is placed on the bottom 22 thereof. Thereafter, the outer container 10 and the inner container 20 may be joined such that the outer container 10 is placed upside down on the inner container 20 on which the prize P is placed. As a result, the installation of the prize P can be realized accurately and easily as compared with the steps of FIGS. 7B and 8C. Therefore, the accommodation method of FIG. 11 is suitable when the handling of the prize P is restricted. Yes.

  In the above embodiment, product information such as the date of manufacture, the expiration date, and the manufacturing location may be printed on both the outer container and the inner container. In this way, even if the outer container is opened and only the inner container is left, product information can be confirmed from the inner container.

  In the above embodiment, a double container in which an inner container and an outer container are combined is illustrated. However, as long as the technical idea of the present invention is realized, for example, a container is further arranged inside the inner container. The form in which more containers are stacked is not excluded from the technical scope of the present invention.

  In any of the above forms, the entire surface of the body portion 21 of the inner container 20 is not bonded to the inside of the body portion of the outer container 10 corresponding to the mating counterpart. That is, the double container 1 is partially joined at a position where the outer container 20 and the inner container 10 are biased toward the upper end side. Therefore, when the outer container 10 is separated up and down by separating the zipper part 14 as shown in FIG. 4, it is possible to remove the upper part of the separated outer container 10 from the inner container 20. This is easier than a form joined to the outer container 10. Therefore, it becomes easy to reuse the inner container 20 from which the upper portion is removed.

  For example, as shown in FIG. 12, a gift decoration decorative table 300 on which the inner container 20 can be placed upside down and the prize P accommodated in the accommodation space 25 can be placed. Can be reused as In this case, it is assumed that the decorative table 300 is reused, and a pattern D that is composed of characters, graphics, symbols, or the like, or a combination thereof, and is distinguishable upside down is upside down with respect to the inner container 20. It may be printed on. Since the pattern D is hidden by the outer container 10 when the outer container 10 and the inner container 20 are joined to form the double container 1, there is no inconvenience in appearance even if printed upside down. .

  When it is assumed that the inner container 20 is reused as the decoration table 300 for the prize P, means for engaging the prize P with the decoration table 300 may be provided as shown in FIGS. . FIG. 13 is a bottom view showing the bottom surface of the inner container 20, and FIGS. 14A and 14B are explanatory views showing how the prize P is attached to the bottom 22 of the inner container 20. For example, as shown in FIG. 13, the easy-to-break parts 301 and 301 are formed on the bottom 22 of the inner container 20, while the positions corresponding to the easily-breakable parts 301 and 301 are shown in FIGS. 14A and 14B. The joining pieces 302 and 302 may be provided on the lower surface of the prize P. According to this, as shown in FIG. 14A and FIG. 14B, the prize P is attached to the bottom portion 22 by pushing the breakable easy portion 301 with the engagement piece 302, so that the engagement piece 302 of the prize P is attached to the bottom portion 22. Mesh with. Thereby, the prize P can be installed on the decoration table 300 without easily coming off the decoration table 300. Note that the breakable part 301 may be realized by a strength reducing means such as a perforation.

The perspective view which showed one Embodiment of the double container of this invention, and showed the external appearance of the double container. Sectional drawing of the double container along the II-II line | wire of FIG. The elements on larger scale which expanded the A section of FIG. Explanatory drawing which showed the state which pulls apart a zipper part while a user picks a knob part. Explanatory drawing which showed the state by which the zipper part was pulled apart and the outer container isolate | separated to the up-down direction. The partial side view which showed a part of side surface of the double container shown in FIG. It is a figure which shows one process which concerns on the 1st form of a manufacturing method, Comprising: The figure which showed the process of crushing the curl part of an inner container to the up-down direction of a container. It is a figure which shows one process which concerns on the 1st form of a manufacturing method, Comprising: The figure which showed the process of accommodating a prize in an outer container. It is a figure which shows one process which concerns on the 1st form of a manufacturing method, Comprising: The figure which showed the process of apply | coating an adhesive agent to the upper end internal peripheral surface of the trunk | drum of an outer container. It is a figure which shows one process which concerns on the 1st form of a manufacturing method, Comprising: The figure which showed the process of combining an outer container and an inner container. The figure which shows 1 process which concerns on the 1st form of a manufacturing method, Comprising: The figure which showed the process of accommodating a foodstuff in the accommodation space of a double container. It is a figure which shows one process which concerns on the 1st form of a manufacturing method, Comprising: The figure which showed the process of affixing a cover part on a double container. The figure which shows 1 process which concerns on the 2nd form of a manufacturing method, Comprising: The figure which showed the process of accommodating a foodstuff in the storage space of an inner container. The figure which shows 1 process which concerns on the 2nd form of a manufacturing method, Comprising: The figure which showed the process of sticking a cover part to an inner container. The figure which shows the 1st process which concerns on the 2nd form of a manufacturing method, Comprising: The figure which showed the process of accommodating a prize in an outer container. The figure which shows 1 process which concerns on the 2nd form of a manufacturing method, Comprising: The figure which showed the process of apply | coating an adhesive agent to the upper end internal peripheral surface of the trunk | drum of an outer container. The figure which shows one process which concerns on the 2nd form of a manufacturing method, Comprising: The figure which showed the process of combining an outer container and an inner container. Explanatory drawing which showed the comparative example. Explanatory drawing which showed the other form of the application | coating method of an adhesive agent. Explanatory drawing which showed the other form of the accommodation method of a prize. The perspective view which shows the state which reused the inner container as a decoration stand and installed the prize on the decoration stand. The top view which showed the bottom face of the inner container. Explanatory drawing which showed the state before attaching a prize to the bottom part of an inner container. Explanatory drawing which showed the state after attaching the prize to the bottom part of the inner container.

Explanation of symbols

1 Double container 5 Adhesive 10 Outer container 11 Body part 13 Single end part 14 Zipper part (easy opening part)
20 inner container 21 trunk 23 curl 30 lid 41 retainer 42 pressure member

Claims (4)

An outer container and an inner container disposed on the inner side of the outer container having a curled part whose upper end is rounded outward, and the upper end of the outer container being adjacent to the curled part of the inner container A method of manufacturing a double container comprising a step of joining, wherein before the step of joining, a step of crushing the curled portion of the inner container in the vertical direction of the inner container is provided ,
In the crushing step, a lid portion is placed on the curled portion, the curled portion and the lid portion are sandwiched by a predetermined member, and the curled portion is crushed in the vertical direction of the inner container, and the lid portion is attached. A method for producing a double container, wherein: The outer container has a single end portion cut in a single state at the upper end of the body portion,
2. The double according to claim 1 , wherein in the joining step, the outer container and the inner container are joined with the single end portion of the outer container adjacent to the curled portion of the inner container. Container manufacturing method. The method for producing a double container according to claim 1 or 2 , wherein a step of applying an adhesive to the inner peripheral surface of the outer container is provided before the step of joining. The outer container has an easy-opening portion extending along the circumferential direction of the trunk portion,
Each of the outer container and the inner container is configured so that the lateral width increases in the direction from the bottom toward the upper end, and the extent of the lateral width in the direction of the inner container is increased in the lateral width in the direction of the outer container. The said outer container and the said inner container are each comprised so that it may become larger than the condition, The manufacturing method of the double container as described in any one of Claims 1-3 characterized by the above-mentioned.

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