JPH08151040A - Packaging container - Google Patents

Abstract

PURPOSE: To repeatedly open and close a pour opening. CONSTITUTION: This packaging container has a container 11, a resin-made lid body 13 for sealing the container 11 and an outer body. The upper end of the container 11 has a curved form consisting of a pair of raised parts 11e and 11f and a pair of depressed parts 11d and 11g and the lid body 13 consists of a first lid part 14 having a pour opening 14b and curved and fused to the upper end of the container 11 and a second lid part 15 laid on and curved and fused to the first lid part 14. The second lid part 15 is provided with a hinge part 15c consisting of raised parts 15a and 15b and depressed parts describing a curvature and the second lid part is divided into an opening/closing piece part 15d and a fixing piece part 15e by the hinge part 15c. Since the hinge part 15c describes the curvature, after the pour opening 14b is opened or closed, it stays open or closed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container.

[0002]

2. Description of the Related Art Conventionally, bottles, paper containers, metal cans and the like have been used as packaging containers for containing foods, such as liquid foods, and the packaging containers are filled with a predetermined amount of liquid foods and sealed. Are commercially available. Of these, bottles are not suitable for sale in vending machines, etc., as they are vulnerable to shock and easily broken. Also, since the paper container does not break even if it is impacted, it is suitable for sale in vending machines, etc., but it has high flexibility, so when deformed at the time of opening etc., the liquid food stored in the paper container Will overflow from the spout.

On the other hand, a metal can is resistant to impact and has rigidity, and is therefore suitable for sale in an automatic vending machine or the like.

[0004]

However, in the conventional metal can, the discarded empty can is crushed.
Not only is it difficult to remove, but it is troublesome to separate and collect aluminum cans and steel cans. When the liquid food is heated and sold in the vending machine, the liquid food contained in the metal can cannot be heated by the dielectric heating, and thus the liquid food is indirectly heated by the high temperature air. Therefore, it takes a long time to heat the liquid food to a sufficient temperature. Furthermore, since the heat insulating property is low, it is difficult to hold the metal can by hand immediately after taking it out from the vending machine, and the liquid food is cooled in a short time.

Therefore, it is conceivable to form a packaging container from resin. In this case, the upper opening of the cylindrical container is closed by a lid (lid), a spout is formed at an appropriate position on the lid, and the spout is sealed by a pull tab. However, in the resin packaging container,
Since the pull tab is peeled off to open the spout, the spout cannot be repeatedly opened and closed.

The present invention solves the above-mentioned problems of the conventional packaging container, and can be easily recovered after being discarded,
An object of the present invention is to provide a packaging container that can heat liquid food by dielectric heating, has high heat insulation, and can open and close the spout repeatedly.

[0007]

Therefore, in the packaging container of the present invention, an accommodating container made of a resin multilayer sheet, a resin lid for sealing the accommodating container, and an outside of the accommodating container are provided. And an exterior body formed of a non-metallic material that surrounds the container and has higher rigidity and heat insulation than the container. And
The upper end of the container has a curved shape consisting of a pair of peaks and a pair of valleys, the lid includes a spout,
A first lid portion that is curved and welded to the upper end of the container, and a second lid portion that is curved and welded on the first lid portion.
It consists of a lid part.

Further, the second lid portion is provided with a hinge portion which draws a curved line composed of a peak portion and a valley portion, and by the hinge portion,
An opening / closing piece on the side corresponding to the spout and a fixed piece on the side not corresponding to the spout are defined. In another packaging container of the present invention, the hinge portion draws a curved line from the crest portion to the trough portion to reach the crest portion.

In still another packaging container of the present invention, the hinge portion draws a curved line from the trough portion to the trough portion.

[0010]

According to the present invention, as described above, in the packaging container, the container made of the resin multi-layer sheet, the resin lid for sealing the container, and the container It has an exterior body that surrounds the outside and is formed of a non-metallic material that has higher rigidity and heat insulation than the container.

In this case, since no metal is used for the packaging container, it is not only easy to crush the discarded packaging container, but also the collection is facilitated. Since the container and the lid are made of resin and the exterior body is made of a non-metallic material, when the food is heated and sold in the vending machine, the food can be heated by dielectric heating. Therefore, the food can be heated to a sufficient temperature in a short time.

Further, since the exterior body has a high heat insulating property, the packaging container can be held by hand immediately after being taken out from the vending machine, and the food is not cooled in a short time. And the upper end of the container has a curved shape consisting of a pair of peaks and a pair of valleys, the lid,
It is provided with a spout, and is composed of a first lid portion that is curved and welded to the upper end of the storage container, and a second lid portion that is overlapped and curved and welded on the first lid portion.

Further, the second lid portion is provided with a hinge portion that draws a curved line composed of a peak portion and a valley portion, and by the hinge portion,
An opening / closing piece on the side corresponding to the spout and a fixed piece on the side not corresponding to the spout are defined. in this case,
When the opening / closing piece is lifted, the opening / closing piece rotates about the hinge as a rotation axis. However, since the hinge portion draws a curved line composed of a peak portion and a valley portion, a stress having a magnitude corresponding to the curvature of the bending line is generated in the opening / closing piece portion, and the opening / closing piece portion corresponds to the curvature of the bending line. It is bent by the amount you do.

Therefore, when the finger is released before the opening / closing piece is perpendicular to the first lid, the opening / closing piece tries to return to the closed state while reducing the stress, and the pouring opening is closed. After that, the closed state is maintained as it is. On the other hand, if the opening / closing piece is pushed vertically after the opening / closing piece is perpendicular to the first lid, the opening / closing piece is further rotated and stopped while reducing the stress. Then, the opening and closing piece portion stops at that position and holds the open state unless a force is applied from the outside.

As described above, since the opening / closing piece holds the open state after opening the spout and holds the closed state after closing the spout, the spout can be repeatedly opened and closed.

[0016]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is an exploded perspective view of a packaging container according to the first embodiment of the present invention, FIG. 2 is a perspective view of the packaging container according to the first embodiment of the present invention, and FIG. 3 is a lid according to the first embodiment of the present invention. It is an open state figure of a body.

In FIG. 1, reference numeral 11 denotes a container for containing liquid food, which is made of a transparent thermoplastic material having a high gas barrier property and has a cup-like shape with an open upper end. The container 11 is formed by deforming a resin multilayer sheet formed by a coextrusion molding method, a blown film molding method, or the like into a cup shape by a tip expansion method described later as a thermoforming method, and has a tubular cross section. -Shaped bottomed body 11
a and a flange portion 11b extending outward in the radial direction at the upper end of the bottomed body portion 11a. The flange portion 11b is slightly curved and has a saddle type shape composed of a pair of peaks 11e and 11f and a pair of valleys 11d and 11g. Container 11
A flat portion 11c is formed toward the inner side of. The thickness of the bottomed body portion 11a is 100 [μm].
It is a degree.

In the tip extension method, since the multilayer sheet is heated to about 180 [° C.] above the melting point and then molded, it is not necessary to sterilize the container 11 before filling the liquid food. In addition, the storage container 11 does not contract or deform due to the molecular orientation effect during retort. As the thermoforming method, a vacuum blow molding method, a pressure blow molding method, or the like can be used.

The above-mentioned multilayer sheet has, for example, the following layer structure. PP / adhesive layer / EVOH / adhesive layer / recycled PP Also, instead of this, PP / recycled PP / adhesive layer / EVOH / adhesive layer / recycled PP
A layer structure such as / PP PP / recycled PP / adhesive layer / EVOH / adhesive layer / APET EVA / EVOH / EVA PS / EVOH / PE PS / EVOH / PS PP / EVOH / PP can also be used. Thus, since EVOH is used for the layer structure, the gas barrier property of the multilayer sheet can be improved.

The following layered structure can also be used. PS / PE PS / PETG PS / PE / PS Then, a sleeve 12 as an exterior body formed of a non-metallic material having higher rigidity and heat insulation than the container 11 is arranged outside the container 11. . The sleeve 12 has a tubular shape, and retains the shape of the container 11 and insulates the liquid food contained in the container 11 and the outside air so that heat does not move. The sleeve 1
The upper end of 2 is slightly curved corresponding to the shape of the container 11, has a saddle shape, and a flat portion 12a is formed on one of the valleys toward the inside of the container 11. It is also possible to use a bottomed tubular body instead of the sleeve 12.

By the way, the container 11 and the sleeve 1
2 has a double structure. Then, the sleeve 12 is formed, and then the accommodation container 11 is formed in the sleeve 12.
Can be molded by a thermoforming method, subsequently filled with liquid food, and then the container 11 can be sealed with the lid 13. Further, the container 11 is formed by thermoforming, and the container 11 is fitted into the sleeve 12 (Kanyu).
Then, after the liquid container is filled with the liquid food, the container 11 can be sealed with the lid 13.

Further, the container 11 may be molded by a thermoforming method, the container 11 may be filled with a liquid food, and the container 11 may be sealed with the lid 13 and then fitted into the sleeve 12. It should be noted that the flat portions 11c and 12a can be formed in a state in which the container 11 is arranged in the sleeve 12 before filling the liquid food. Alternatively, the flat portion 12a may be formed on the sleeve 12 in advance, and the flat portion 11c may be formed when the container 11 is formed by the thermoforming method.

The sleeve 12 is made of expanded polypropylene, and in this case, the diameter of bubbles formed by expansion is set to about 150 [μm]. Further, instead of the foamed polypropylene, a layered structure including a polypropylene layer and a foamed polypropylene layer can be used, and a paper material can also be used. In this case, printing can be performed on the surface of the polypropylene layer or paper material. And
When the sleeve 12 is made of a transparent material, the liquid food contained in the container 11 can be seen through.

After the container 11 is filled with the liquid food, the lid 13 is provided on the upper surface of the flange 11b.
Is fixed and the container 11 is sealed. The lid 13
Is composed of a first lid portion 14 and a second lid portion 15. The first lid portion 14 is the flange portion 11 of the storage container 11.
A portion having a shape corresponding to the shape of b and corresponding to the valley portion 11g is cut to form the cut portion 14a. Also,
The first lid portion 14 is made of a transparent resin film and is welded to the flange portion 11b by a sealing means such as heat sealing or ultrasonic sealing. In this case, the resin film forming the first lid portion 14 can be formed flat, and the resin film can be welded while being curved according to the shape of the flange portion 11b, and the resin film can be formed. It may be curved in advance according to the shape of the flange portion 11b. Further, a spout 14 is provided slightly inside the cutout portion 14a of the first lid portion 14.
b is formed.

On the other hand, the second lid portion 15 also has a shape corresponding to the shape of the flange portion 11b of the accommodating container 11, but the portion corresponding to the valley portion 11g is not cut, and therefore the knob portion. As 15 g, it projects from the cutout portion 14 a. The second lid portion 15 is made of a transparent resin film having a high gas barrier property, and is laminated and welded onto the first lid portion 14 by a sealing means such as heat sealing or ultrasonic sealing. In this case, the resin film forming the second lid portion 15 can be formed flat, and the resin film can be welded while being curved according to the shape of the first lid portion 14 and at the same time. The film may be curved in advance according to the shape of the first lid portion 14.

A hinge portion 15c is formed between the peak portions 15a and 15b of the second lid portion 15 by thinning the resin film, and the hinge portion 15c forms a half portion on the side corresponding to the spout 14b. Circular opening / closing piece 15d
However, a semicircular fixing piece 15e is formed on the side not corresponding to the spout 14b. And the opening / closing piece 15d
And the first lid portion 14 are welded relatively weakly, and the fixing piece portion 15e and the first lid portion 14 are strongly welded.

Therefore, the lid 13 can be opened by peeling off the opening / closing piece 15d from the first lid 14, and the spout 14b can be opened as shown in FIG. Then, after once opening the lid 13, the opening 14b can be repeatedly opened and closed by swinging the opening / closing piece 15d. In this case, since the resin films forming the first lid portion 14 and the second lid portion 15 are transparent, the liquid food contained in the container 11 can be seen through.

When the sleeve 12 is made of a transparent material, the liquid food contained in the container 11 can be seen through the sleeve 12, so that the lid 13 is made of a transparent resin film. Need not be formed.
A portion of the second lid portion 15 corresponding to the valley portion 11g is not cut, and protrudes from the cutout portion 14a and the grip portion 1 is formed.
Since 5 g is formed, it is easy to open the lid 13 and open / close the spout 14b.

By the way, in the closed state of the spout 14b, as shown in FIG. 2, the lid 13 is curved, and the hinge portion 15c is provided with a mountain portion as the lid 13 is curved. A curved line is drawn from 15a to the mountain portion 15b through the valley portion 15f. Here, when the opening / closing piece portion 15d is lifted by putting a finger on the knob portion 15g, the opening / closing piece portion 15d rotates about the hinge portion 15c as a rotation axis. However, since the hinge portion 15c is formed so as to draw a curved line, a stress having a magnitude corresponding to the curvature of the curved line is generated in the opening / closing piece portion 15d, and the opening / closing piece portion 15d is formed.
Is deflected by an amount corresponding to the curvature of the curve.

Therefore, if the finger is released from the picking portion 15g before the opening / closing piece portion 15d becomes vertical to the first lid portion 14, the opening / closing piece portion 15d tries to return to the closed state while reducing the stress. Then, after closing the spout 14b, the closed state is maintained as it is. On the other hand, when the opening / closing piece portion 15d becomes vertical to the first lid portion 14 and then the opening / closing piece portion 15d is further pushed, the opening / closing piece portion 15d further rotates while reducing the stress, Stop at the position shown in 3.
The open / close piece 15d stops at that position and maintains an open state unless a force is applied from the outside.

As described above, the opening / closing piece 15d holds the open state after opening the spout 14b.
Since the closed state is maintained after closing b, the spout 14
b can be repeatedly opened and closed. By the way, the resin films forming the first lid portion 14 and the second lid portion 15 are molded to a thickness of 30 to 50 [μm] by a coextrusion molding method, a blown film molding method, or the like. The resin film formed by the coextrusion molding method has the following layered structure, for example.

PP / adhesive layer / EVOH / adhesive layer / PP Further, the lid 13 may be formed of a transparent resin plate having a high gas barrier property. In this case, the resin plate is molded by a hot pressing method, an injection molding method or the like.
A glossy film 16 made of a heat-shrinkable material is formed on the outer side of the sleeve 12. The film 16 is printed with predetermined characters and pictures. Further, as the film 16, a stretched PP film having a thickness of less than 20 [μm] can be used. In addition,
When printing on the surface of the sleeve 12, the film 1 is used.
6 is unnecessary.

Since no metal is used for the packaging container as described above, not only is it easy to crush the discarded packaging container, but also collection is facilitated. Since the container 11 is made of resin and the sleeve 12 is made of a non-metallic material, when heating and selling the liquid food in the vending machine, the liquid food can be heated by dielectric heating. Therefore, the liquid food can be heated to a sufficient temperature in a short time.

Furthermore, since the sleeve 12 has a high heat insulating property, the packaging container can be held by hand immediately after being taken out from the vending machine, and the liquid food is not cooled in a short time. Next, a second embodiment of the present invention will be described. FIG. 4 is a perspective view of a packaging container according to the second embodiment of the present invention.

In the figure, 11 is a container, 11c is a flat portion, 13 is a lid, 14 is a first lid, 15 is a second lid,
15c is a hinge, 15d is an opening / closing piece, 15g is a knob,
16 is a film. In this case, the second lid portion 15 is curved upward, and the hinge portion 15c is formed so as to draw a curved line from the trough portion to the trough portion. In this case as well, the fingers are hooked on the knob 15g to open and close the opening / closing piece 1
When 5d is lifted, the opening / closing piece portion 15d becomes hinged portion 15d.
Rotate with c as the axis of rotation. However, the hinge portion 15
Since c is formed so as to draw a curved line, a stress of a magnitude corresponding to the curvature of the bending line is generated in the opening / closing piece 15d, and the opening / closing piece 15d corresponds to the curvature of the bending line. You can bend it by the amount you do.

Therefore, when the finger is separated from the picking portion 15g before the opening / closing piece portion 15d becomes vertical to the first lid portion 14, the opening / closing piece portion 15d reduces the stress,
Attempting to return to the closed state, and after closing, the spout (not shown) is maintained in the closed state as it is. On the other hand, the opening / closing piece 1
When the opening / closing piece portion 15d is further pushed after the 5d becomes vertical to the first lid portion 14, the opening / closing piece portion 15d further rotates while stopping the stress and stops. The open / close piece 15d stops at that position and maintains the open state unless a force is applied from the outside.

As described above, since the opening / closing piece 15d holds the open state after opening the spout and holds the closed state after closing the spout, the spout can be repeatedly opened and closed. Next, a third embodiment of the present invention will be described. FIG. 5 is a perspective view of a packaging container according to the third embodiment of the present invention.

In the figure, 11 is a container, 13 is a lid, 14 is a first lid, 15 is a second lid, 15c is a hinge, 15g is a knob, and 16 is a film. In this case, the knob 15g is formed so as to project forward. Therefore, it is not necessary to form the flat portions 11c and 12a (FIG. 1) as shown in the first and second embodiments on the container 11 and the sleeve 12.

Although the second lid portion 15 is formed by bending the resin film in each of the above-described embodiments, the second lid portion 15 may be formed in a lens shape. Next, the tip extension method will be described. FIG. 6 is a first step diagram of the method for forming a packaging container according to the embodiment of the present invention, FIG. 7 is a second step diagram of the method for forming a packaging container according to the embodiment of the present invention, and FIG. 8 is a packaging according to the embodiment of the present invention. It is a 3rd process drawing of the forming method of a container.

In the figure, 21 is a multilayer sheet, 35 is a female type, and 41 is a tip expansion plug. The tip expansion plug 4
Reference numeral 1 denotes a bottomed cylindrical expansion cam 51 which is arranged so as to face the female mold 35 and opens toward the female mold 35, and a rod 53 which is vertically movable at the center of the tip expansion plug 41. And a cam blade 55 mounted so as to be swingable about a fulcrum 54 at the tip of the rod 53.
A plurality of cam blades 55 are arranged along the periphery of the rod 53, and the cam follower piece 5 below the fulcrum 54.
5a and an extension piece 55b above the fulcrum 54.

A cam surface 51a is formed on the inner periphery of the expansion cam 51 so as to extend radially inward as it extends upward. Therefore, as shown in FIG. 7, when the rod 53 is raised, the cam driven piece 5 of the cam blade 55 is moved.
5a moves along the expansion cam 51 and gradually comes to be positioned radially inward, so that the cam blade 55 is swung. On the other hand, the tip of the expansion piece 55b is moved radially outward as the cam blade 55 swings. During this time, the inside of the female die 35 is evacuated through the holes 58 formed in the female die 35.

In this way, as shown in FIG. 8, the container 11 having a good wall thickness balance and a small thickness at the bottom and side is formed. Moreover, the container 11
The weight can be reduced and the airtightness can be increased. It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a packaging container according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the packaging container according to the first embodiment of the present invention.

FIG. 3 is an open state view of a lid body according to the first embodiment of the present invention.

FIG. 4 is a perspective view of a packaging container according to a second embodiment of the present invention.

FIG. 5 is a perspective view of a packaging container according to a third embodiment of the present invention.

FIG. 6 is a first process diagram of a method for molding a packaging container in an example of the present invention.

FIG. 7 is a second step diagram of the method for molding the packaging container in the example of the present invention.

FIG. 8 is a third step diagram of the method for molding the packaging container in the example of the present invention.

[Explanation of symbols]

 11 Storage Container 13 Lid 14 First Lid 15 Second Lid 21 Multilayer Sheet 11a Bottomed Body 11b Flange 11d, 11g Valley 11e, 11f, 15a, 15b Mountain 14b Pouring Out 15c Hinge 15d Opening / Closing Piece Part 15e Fixed piece part

Claims (3)

[Claims] 1. A container comprising (a) a resin multi-layer sheet, and (b) a resin lid for sealing the container.
(C) The exterior of the storage container is surrounded, and the exterior container is made of a non-metallic material having higher rigidity and heat insulation than the storage container. (D) The top end of the storage container has a pair of ridges and Has a curved shape consisting of a pair of valleys, (e)
The lid includes a spout, and includes a first lid portion curved and welded to an upper end of the storage container, and a second lid portion curved and welded on the first lid portion. (F) The second lid portion includes a hinge portion that draws a curved line composed of a peak portion and a valley portion, and by the hinge portion, the opening / closing piece portion on the side corresponding to the spout and the spout are provided. A packaging container, characterized in that a fixed piece portion on the non-corresponding side is partitioned and formed. 2. The packaging container according to claim 1, wherein the hinge portion draws a curved line extending from the peak to the peak through the valley. 3. The packaging container according to claim 1, wherein the hinge portion draws a curved line extending from the valley portion to the valley portion through the peak portion.