JP2006143274A - Composite container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite container having the improved fitting strength of a container body and an outer package to prevent them from missing, easy to separate in disposal after use, and easy to separate the container body from the outer package. <P>SOLUTION: The composite container consists of the cup-like container body which is a plastic molding and the outer package made of a paperboard fitted to the outside of the container body. A swelling section is formed peripherally along an upper part of the barrel of the container body. A folding piece having a holding hole approximately at the center is provided on an upper side of the barrel of the outer package. The folding piece is folded into the barrel to hold a corner of the swelling section of the container body by the holding hole of the folding piece. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a composite container composed of a cup-shaped container body, which is a plastic molded product, and an outer packaging body mainly made of paperboard.

In many cases, cooked frozen foods, chilled foods, or aseptic packaged foods distributed at room temperature are removed from the package, transferred to tableware, and then cooked in the microwave oven instead of being cooked in the microwave oven, and then used directly on the table. It is coming. In the case of various packaging containers used for this purpose, it is necessary to take out the packaging container heated by the microwave oven from the microwave oven while it is hot. Conventionally, foamed plastic cups have been often used. Recently, a double-walled composite container composed of a plastic cup and paperboard has been proposed from the viewpoint of environmental friendliness instead of the foamed plastic cup. In this double-walled composite container, when the plastic cup container body and the paperboard outer packaging body are fitted together, the container body and the outer packaging body are connected to each other in order to increase the fitting strength and prevent dropping. It is partially bonded using a melt adhesive or the like. (For example, refer to Patent Document 1).
Japanese Utility Model Publication No.59-168319

  However, as in the past, in order to increase the fitting strength and prevent the dropout, when the container body and the outer package are partially bonded, a process such as hot melt adhesive application is required, and the equipment cost is reduced. There is a problem of becoming higher. Moreover, when a container main body and an outer package are adhere | attached partially, when discarding after use, there exists a problem that it is difficult to remove and the container main body and an outer package are not easy to separate.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to increase the fitting strength between the container body and the outer packaging body to prevent the dropout and to discard it after use. An object of the present invention is to provide a composite container that is easy to remove and can be easily separated from a container body and an outer package.

  In order to achieve the above object, the composite container of the present invention is a composite container comprising a cup-shaped container body that is a plastic molded product, and an outer package made of paperboard that is fitted to the outside of the container body. A bulging portion is formed in a circumferential shape on an upper portion of the body portion of the container body, and a folded piece having a holding hole at a substantially central portion is provided on an upper side of the body portion of the outer package, and the folded piece is The composite container is characterized in that it is folded inside the barrel and the corners of the bulging part of the container body are held by the holding holes of the folded pieces.

  In the first form, the outer package is in an inverted truncated pyramid shape in which the upper one is open, the four side plates are tapered, and the upper edge opening and bottom are square. It is characterized in that it has a bottom surface of the outer package body that can be folded into a flat shape and can be formed by simply raising it. Therefore, the bottom surface of the outer package is an auto bottom type.

  In the second form, the outer package is in an inverted truncated cone shape in which both the upper and lower sides are open, the body is tapered, and the opening and bottom of the upper edge are circular. In addition, the outer wrapping body is provided with two fold lines in a vertical shape so that the outer wrapping body can be folded into a flat shape and can be formed into an inverted frustoconical shape only by being raised.

  In the composite container comprising the container main body and the outer wrapping body of the present invention, the outer wrapping body in which the folded piece having the holding hole at the substantially central portion provided on the upper side of the body portion is folded inside is formed on the upper portion of the body portion. By fitting a container main body having a circumferential bulging portion, the corner of the bulging portion of the container main body can be held by the holding hole of the folded piece of the outer packaging body, and the container main body without being bonded It has the effect that the fitting with the outer package can be made strong.

  Further, unlike the method of bonding and integrating the container body and the outer package, it is relatively easy to separate the container body and the outer package, and after use, the container body and the outer package, It is easy to separate and dispose of plastic and paper, and a preferable form can be obtained from the viewpoint of environment.

  The outer package before mating has a shape that can be folded into a flat shape, which saves space in logistics such as storage and transportation, is economical, and pushes both sides when assembling. Thus, it is possible to easily assemble and to have an effect that the operation of fitting with the container body is simple.

  Furthermore, the outer packaging body made of paper has good suitability for printing, etc., can improve the design of the appearance of the composite container, and a gap is formed between the container body and the outer packaging body. And, it has an effect that it can be a composite container having heat insulation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is provided to the same site | part of each drawing.

  FIG. 1 shows one example of the first embodiment of the composite container according to the present invention. The composite container 1A in the same figure is a cup-shaped product which is a plastic molded product hermetically sealed with a lid 4. The container body 2A is composed of a paperboard outer wrapping body 3A fitted on the outside of the container body 2A.

  The container body 2A is formed by molding a plastic sheet into a cup shape by vacuum forming or pressure forming, or by molding a plastic into a cup shape by injection molding. As shown in FIG. 2, the container main body 2 </ b> A includes a bulging portion 23 that is circumferentially provided on the upper portion of the container main body 21 and an outward flange portion 24 formed at the tip of the bulging portion 23. It has a shape. The lid member 4 is heat sealed by the flange portion 24.

  Examples of the plastic sheet used for the vacuum forming of the container body 2A include polypropylene, polystyrene, and polyethylene sheets. Examples of the plastic used in the injection molding include resins such as polypropylene, polyethylene, and polystyrene. In either case, the plastic used is not particularly limited. In addition, a plastic containing magnesium silicate or the like can be used as a filler.

  On the other hand, the outer wrapping body 3A is made of paperboard. As shown in FIG. 3, the outer wrapping body 3A is in a state where the four side plates 11, 12, 13, 14 are tapered, The opening 33 at the edge and the bottom surface 32 of the outer package body are in the shape of an inverted truncated pyramid, and the opening 33 at the upper edge can be fitted to the bulging portion 23 on the upper portion of the container body 21 of the container body 2 without any gap. It is a dimension. Further, folded pieces 20 are provided on the upper sides of the side plates, respectively, and are folded inside the side plates. A holding hole 20 a is provided in a substantially central portion of the folded piece 20.

  When the outer packaging body 3A is fitted to the container body 2A, as shown in FIG. 1-c, the holding hole 20a of the folded piece 20 folded inside the opening 33 on the upper edge of the outer packaging body 3A. The corner portion of the bulging portion 23 of the container body 2 is held, and the composite container 1A shown in FIG. 1 is formed. Accordingly, there are gaps S between the container body trunk 31 in the container body 2A, the container body bottom 22 and the outer package body 31 of the outer package 3 and the bottom surface 32 of the outer package 3 as shown in FIG. Is formed.

  FIG. 4 is a development view showing a blank before assembling the outer package 3A of the composite container 1A of the present invention. In the blank 10A, the four side plates 11, 12, 13, 14, and the adhesive margin piece 15 that form the outer package body 31 in a trapezoidal shape whose upper side is longer than the lower side are connected via the broken lines a, b, c, d. The bottom folding piece 16, the bottom plate 17, the bottom folding piece 18, and the bottom plate 19 that form the outer packaging body bottom surface 32 are arranged on the lower side of each of the side plates 11, 12, 13, and 14 via the folding line e. It is connected continuously. In this example, the shape of the bottom surface 32 of the outer package body is an auto bottom type that can be folded and raised to form the bottom surface 32 of the outer package body. The shape of the bottom surface 32 of the outer package is preferably a foldable shape, and in addition to the auto bottom type of this example shown in FIG. I'm going. Further, when the seal carton form as shown in FIG. 5C is used, the bottom surface 32 of the outer package body cannot be folded, so that it is necessary to store and transport it in an inverted truncated pyramid shape (stacked).

  In the outer wrapping body 3A, the outer wrapping body body 31 is connected to each of the four side plates 11, 12, 13, and 14 connected by broken lines a, b, c, and d. When the folded outer packaging body 3A is formed by bonding the side plate 11 together, the inverted truncated pyramid has a square cross section. By fitting this inverted truncated pyramid shaped outer packaging body 3A to the outside of the container body 2A, an appearance is added, and at the same time, a gap S is generated between the outer packaging body 3A and the container body 2A. A heat insulating effect can also be imparted.

  And the folding piece 20, 20, 20, 20 which provided the holding hole 20a in a part of upper side of each side plate 11, 12, 13, 14 can be turned inside the side plate 11, 12, 13, 14 respectively. By folding the folded pieces 20, 20, 20, 20 inside the side plates 11, 12, 13, 14 respectively, the opening 33 of the outer wrapping body 3A is strengthened and fitted with the container body 2A. Tightness can be made tighter. Furthermore, the holding hole 20a provided in the folded piece 20 can hold the corner portion of the bulging portion 23 at the upper portion of the container body 2A, and the fitting can be made stronger. The holding hole 20a is provided at a substantially central portion of the folded piece 20, and the shape thereof is a horizontally long rectangle, an oval, or the like so that the corner of the bulging portion 23 on the upper portion of the container body 2A can be held. It is preferable. Further, the folded pieces 20 are not necessarily provided on all four side plates, and may be provided on a pair of opposing side plates. It is effective to provide it at the opposite position.

  The material used for the outer package 3A is mainly paper, and a paperboard having an appropriate thickness and rigidity can be suitably used. However, in order to improve the appearance and the design, it is preferable to provide a pattern or other decoration on the surface by printing or the like. For this purpose, various types of white paperboard having excellent printability are preferable. In addition to the paperboard alone, for example, a paperboard with an aluminum foil laminated on the surface may be used to give a metallic atmosphere, or a plastic such as polyethylene on the front or back surface in order to improve water resistance, strength, etc. Paperboard laminated with a film may also be used.

  Thus, the outer package 3A of the composite container 1A of the present invention is assembled from the blank 10A shown in FIG. 4, that is, the blank 10A is put on a sack pasting machine, and the bottom folding piece 16, the bottom plate 17, the bottom The folding plate 18 and the bottom plate 19 are folded inward, the side plate 14 is folded inward along the fold line c, the side plate 11 is folded inward along the fold line a, the bottom folding piece 16 and the bottom plate adhesive margin piece 17a of the bottom plate 17, the bottom folding piece 18 and By bonding the bottom plate adhesive margin piece 19a of the bottom plate 19 and adhering the adhesive margin piece 15 and the side plate 11, a folded state can be obtained as shown in FIG. When they are joined, they are raised from the folded state into a cylindrical shape to form the outer package bottom surface 32, and as shown in FIG. 3A, the upper edge is an inverted truncated pyramid shaped outer package 3A. A.

  The manufacturing method of such an outer package 3A can be efficiently manufactured by known equipment in the printing, punching, and iron making processes in the same manner as a normal folding carton (Folding Carton). It can be supplied in a folded state. In other words, printing may be any plate type such as lithographic printing, gravure printing, flexographic printing, screen printing, etc., and printing is possible with a paperboard specification printing machine, and printing can be performed with high productivity using a multi-sided printing plate. it can.

  Also for punching, a blank 10A of the outer package 3A can be easily manufactured by simultaneously performing ruled line processing and punching using a punch machine for a normal folding carton.

  In addition, the iron making can be folded in-line and pasted with the outer packaging body body 31 and the outer packaging body bottom face 32 by a horizontal / bottom pasting machine or the like in the same manner as in a normal folding carton. The outer package 3A in a state can be manufactured with high productivity.

  The outer package 3A of the composite container 1A of the present invention manufactured as described above is not bulky and is easy to transport and store because the outer package body 31 and the outer package bottom surface 32 are folded. When used, the cross section provided with the bottom surface 32 of the outer package body can be formed into a quadrangular inverted truncated pyramid shape by simply pushing both ends of the outer package body body 31 inward. The inverted pyramid-shaped outer packaging body 3A can be fitted by simply pushing it into the outside of the container body 2A. That is, the corner portion of the bulging portion 23 of the container body 2A can be held by the holding hole 20a of the folded piece 20 of the outer package body 3A, and the fitting between the container body and the outer package body is firmly performed without bonding. Can be. These processes do not require cost for processing equipment and are economical.

  The composite container 1A is sold, for example, in a state in which cooked food is put therein and the lid member 4 is sealed in the flange portion 24. When the contents are eaten, a part of the lid 4 is peeled off and cooked in a microwave oven and can be eaten as it is. Thus, although the contents in the container main body 2A are heated, a gap S is formed between the container main body body 21 of the container main body 2A and the outer packaging body 3A. The heat of the contents is prevented from being transmitted to the outer package 3A. Further, the composite container 1A has a high strength because its side wall has a double structure.

  FIG. 6 shows an example of the second embodiment of the composite container according to the present invention. The composite container 1B shown in the figure is similar to the composite container 1A shown in FIG. It consists of the outer packaging body 3B made. As in the first embodiment, the container body 2B is a cup-shaped plastic sheet formed by vacuum molding or pressure forming, or a cup-shaped plastic molded by injection molding. The upper portion of the body portion 21 has a shape having a circumferential bulge portion 23 and an outward flange portion 24 formed at the tip of the bulge portion 23.

  On the other hand, the outer wrapping body 3B is made of paperboard, but unlike the first embodiment, as shown in FIG. 7, it is made of a fan-shaped blank 10B that is long horizontally. That is, the blank 10B is applied to a sack pasting machine, the ruled line a and the ruled line b are bent inward in this order, and the left end outer surface 9 and the right end inner surface 10 shown in FIG. 8 is a state in which the sack is applied as shown in FIG. 8, and when it is inserted into the container main body 2B, it is raised in a cylindrical shape as shown in FIG. And this outer packaging body 3B is the dimension which the opening part 33 of an upper edge has the same taper as the outer periphery of the bulging part 23 in the container main body 2B, and can be inserted without gap. A plurality of folded pieces 20 are provided on the upper side of the container main body 21 and are folded inside the container main body 21. A holding hole 20 a is provided in a substantially central portion of the folded piece 20.

  And when the outer packaging body 3B is fitted to the container main body 2B, the bulging portion 23 of the container main body 2B is held by the holding hole 20a of the folded piece 20 folded inside the opening 33 at the upper edge of the outer packaging body 3B. The corner portion is held, and the composite container 1B shown in FIG. 6 is formed. Accordingly, a gap S is formed between the container body trunk 31 and the container body bottom 22 in the container body 2B and the outer package body 31 of the outer package 3B as shown in FIG.

  Thus, also in the composite container of the 2nd form, there exists an advantage which can integrate a container main body and an outer package body, without using an adhesive agent. In this configuration, the lower end of the outer package may be extended to form an inner curl portion in the extended portion. Moreover, it is good also as a shape fixed by inserting a bottom part into an inner curl part. Furthermore, the outer periphery of the outer wrapping body folded back and the lower end of the outer wrapping body folded back may be sandwiched, or a so-called paper cup bottom tightening shape may be used. In the case of such a shape, since the outer package cannot be folded, it is necessary to store and transport it in an inverted truncated cone shape (stacked).

  Moreover, in the composite container 1B, although the case where the thing of the shape which can be sack pasted and folded as the outer packaging body 3B was used was demonstrated, you may use a flat wound thing as the outer packaging body 3B. Since the flat-wrapped outer package 3B has no creases and does not have a bulge as in the case of spreading a sack-attached one, the appearance of the container is improved.

  In addition, the composite container of this invention can be utilized suitably as a container for microwave oven foods which cooks and eats cooked food with a microwave oven.

It is the perspective view which shows an example of 1st embodiment of the composite container of this invention, sectional drawing, and the elements on larger scale. It is the perspective view and sectional drawing of the container main body which comprise the composite container of FIG. It is the perspective view and folding view of the outer package which comprise the composite container of FIG. It is an expanded view of the blank of the outer package body which comprises the composite container of FIG. It is an enlarged view which shows the other shape of the bottom face of the blank of the outer package body which comprises the composite container of FIG. It is the perspective view and sectional drawing which show an example of 2nd embodiment of the composite container of this invention. It is an expanded view of the blank of the outer package body which comprises the composite container of FIG. It is a figure which shows the state which stuck and blanked the blank of the outer package body which comprises the composite container of FIG. It is a perspective view of the container main body which comprises the composite container of FIG.

Explanation of symbols

1A composite container (first embodiment)
2A container body (first embodiment)
3A outer package (first embodiment)
1B composite container (second embodiment)
2B container body (second embodiment)
3B outer package (second embodiment)
4 Lid 10A Blank (first embodiment)
10B blank (second embodiment)
DESCRIPTION OF SYMBOLS 11 Side plate 12 Side plate 13 Side plate 14 Side plate 15 Glue piece 16 Bottom folding piece 17 Bottom plate 18 Bottom folding piece 19 Bottom plate 20 Folding piece 20a Holding hole 21 Container body trunk | drum 22 Container body bottom face 23 Swelling part 24 Flange part 31 Outer packaging body Body 32 Bottom surface of outer packaging body 33 Opening part af Folding line (first embodiment)
m, n polyline (second embodiment)
S gap

Claims (6)

A composite container comprising a cup-shaped container body, which is a plastic molded product, and an outer packaging body made of paperboard that is fitted to the outside of the container body. Forming a protruding portion, providing a folded piece having a holding hole at a substantially central portion on the upper side of the body portion of the outer package, folding the folded piece inside the body portion, and holding the folded piece at the holding hole of the folded piece; A composite container characterized by holding a corner of the bulging part of the container body. The state before the outer packaging body is fitted is an inverted truncated pyramid shape in which one upper side is open, the four side plates are tapered, and the upper edge opening and bottom are square. Item 4. A composite container according to Item 1. The composite container according to claim 2, wherein the outer package includes a bottom surface of the outer package that can be folded into a flat shape and can be formed only by raising the outer package. The composite container according to claim 3, wherein the bottom surface of the outer package is an auto bottom type. The state before the outer packaging body is fitted is an inverted frustoconical shape in which both the upper and lower sides are open, the body is tapered, and the opening and bottom of the upper edge are circular. The composite container according to claim 1. 6. The composite container according to claim 5, wherein the outer package includes two fold lines in a vertical shape so that the outer package can be folded into a flat shape and can be formed into an inverted frustoconical shape.

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