JPH07205998A - Composite container - Google Patents

Abstract

PURPOSE:To provide a composite container wherein an amount of used plastic materials is reduced, the container is applicable to containers of any shape, a handle member has sufficient strength so that its strength may not drop even when it is wet with liquid, and a paper cylinder can be removed from a container body after use to easily separate both of them for recycling only the paper container. CONSTITUTION:A container body 1 has a body 7 which has been formed to be especially thin and steps 6, 8, while a protrusion is formed on a side of the body 7. A handle member 2 is made of plastic, wherein it comprises a large-aread rear plate 11 covering a peripheral face and both sides of the protrusion and a handle part 12. A paper cylinder 3 has a handle insertion hole with overlapped parts adhered, wherein the handle member 2 is adhered and fixed to an internal face of the paper cylinder 3, and these are mounted to the container body 1.

Description

Detailed Description of the Invention

[0001]

[Industrial application] The present invention is applied to beverages, shampoos,
The present invention relates to a liquid container for containing a rinse and a toiletry detergent and the like, and more particularly to a composite container in which a thin plastic bottle has an outer surface reinforced with a paper tube made of cardboard.

[0002]

2. Description of the Related Art Conventionally, a bottle-shaped liquid container made of a plastic material such as polyethylene or polypropylene by blow molding has been widely used. However, recently, from the standpoint of environmental protection, there has been a demand for reducing the amount of plastic materials used in these liquid containers and for separating and collecting them.

Therefore, in order to reduce the amount of plastic material used, the simplest method is to reduce the thickness of the bottle. However, simply reducing the thickness makes the bottle too soft and easily deformed, and it becomes impossible to stand by itself. There is also a problem that the buckling strength and the drop strength are reduced.

For this reason, various containers have been proposed in which the outer surface of a plastic bottle is protected by a paper box. Among them, for example, what is disclosed in Japanese Utility Model Laid-Open No. 5-26836 is a “storage bottle with a cover case”, and as shown in FIGS. 5 and 6, a cylindrical storage bottle main body 20 having a rectangular cross section and an outer periphery thereof. The cover case 21 has a rectangular cross section and is fitted into the surface. One corner 2 forming a rectangular cross section of the container body 20
1a is formed with a vertically long concave portion 22 which is recessed inside the bottle and extends in the vertical direction of the bottle, and an opening 23 is formed at a position corresponding to the corner portion 21a of the cover case 21. In the vicinity of the opening 23 of the cover case 21, support pieces 24, 24 whose tip is bent so as to contact the wall surface of the recess 22 are formed. Support pieces 24, 24
Is provided with a notch 26 that forms an overlapping portion 25 that is overlapped with each other, and a corner portion of the cover case 21 is formed by the overlapping portions 25 that are overlapped with each other and the handle portion 2 having a triangular cross-sectional shape
Form 7. The part of the cut 26 is the overlapping part 25, 2.
By stacking 5 on each other, an insertion space for inserting a finger and gripping the handle portion 27 is provided.

[0005]

However, in the above-mentioned conventional "storage bottle with cover case", since the handle portion 27 is formed on the cover case 21 itself, the storage bottle main body 20 is enlarged to store a large amount of liquid. , It is necessary to sufficiently reinforce the handle portion 27, but since the material of the handle portion 27 is paper, there is a limit in strength when wet with a liquid, and a double structure or a support piece 24, 24 is provided. There is a problem that it is not suitable for a large-sized container because sufficient strength cannot be secured even if the tip end of is fixed to the wall surface of the recess 22. Further, since the insertion space for gripping the handle portion 27 is required, the concave portion 22 must be formed in the storage bottle main body 20 and the shape of the storage bottle main body 20 is greatly restricted. Has become an obstacle. Further, since the holding bottle main body 20 and the supporting pieces 24, 24 are weakly fixed to each other, the holding bottle main body 20 may be deformed at the time of use and the fitted state between them may be loosened.

Therefore, the present invention can reduce the amount of plastic material used and can be applied to containers of any shape without restricting the design of the container body, and the handle member has sufficient strength. However, even when it gets wet with liquid, its strength does not decrease, only the handle member does not come off, and after use, the paper tube can be easily separated by pulling out the paper tube from the container body and only the paper tube can be separated. An object is to provide a reusable composite container.

[0007]

In order to solve the above-mentioned problems, the present invention is a composite container in which a body of a container body made of a thin plastic bottle is held by a paper tube to which a handle member is adhesively fixed. The handle member is made of plastic and is composed of a back plate portion and a grip portion. The back plate portion is fixed to the inner surface of the paper cylinder and the grip portion is projected from the grip insertion hole to the outer surface of the paper cylinder. is there.

[0008]

According to the composite container of the present invention, since the back plate portion of the handle member is fixed to the inner surface of the paper cylinder, the handle member can be formed even if the internal volume is reduced and the container body is deformed. It does not come off from the paper tube. Since the handle member is made of plastic, its strength does not decrease even when it is wet with a liquid. Further, after use, the paper cylinder can be easily separated by pulling out the paper cylinder from the container body, and only the paper cylinder can be reused.

[0009]

EXAMPLES The present invention will be described in detail below with reference to the examples shown in FIGS.

FIG. 1 shows the composite container of this embodiment.
It is composed of a container body 1, a handle member 2 and a paper tube 3.

The container body 1 is blow-molded from low-density polyethylene, and has a rectangular cross section having a thick shoulder portion 5 below the neck portion 4, particularly a thin body portion 7 and a bottom portion 9. It is a plastic bottle. At the boundary between the shoulder portion 5 and the body portion 7 and at the boundary between the body portion 7 and the bottom portion 9, steps 6 and 8 having a thickness of the paper cylinder 2 are formed. Also, the torso 7
As shown in FIG. 4, a protruding portion 10 is formed on one side surface of the above.

The handle member 2 is injection-molded using polyethylene terephthalate, and is slightly larger than the protruding portion 10 of the body portion 7 of the container body 1 as shown in FIG. A wide-area back plate portion 11 formed to cover the surface and both side surfaces, and a grip portion 12 standing upright with a height such that a finger can be inserted from the back plate portion 11 are formed. The back plate portion 11 may be formed in a shape that covers not only the peripheral surface and both side surfaces of the protruding portion 10 but also the upper side surface and the lower side surface. In this way, the protrusion 10 can prevent the deviation of the paper tube 3 during use almost completely.

The paper cylinder 3 has a basis weight of 250 to 250 as shown in FIG.
After printing on a coated cardboard of 300 g / m ² , the grip insertion hole 13 is punched out to form a blank. Then, it is formed by adhering the handle member 2 into a paper tube shape and adhering the overlapping portion 14, and is slightly larger than the body portion 7 so that the peripheral surface of the body portion 7 of the container body 1 can be inserted. Are formed in a similar shape.

A window portion (not shown) for confirming the remaining amount is provided on the paper tube 3, and a zipper line (not shown) is formed in order to facilitate separation from the container body. It is also possible.

In order to bond the handle member 2 to the paper tube 3, the grip portion 12 is projected from the grip portion insertion hole 13, and at the same time, the bonding portions 1 are scattered around the handle insertion hole 13 of the paper tube 3.
No. 5 is provided and a hot melt adhesive is applied for strong adhesion. The back plate 11 of the handle member 2 is used instead of the paper tube 3.
It is of course possible to apply an adhesive around the grip portion 12 of the above.

As described above, in this embodiment, the adhesive is selected as the fixing means for the handle member and the paper tube, but the handle insertion hole 13 is used.
If it is formed to have a size slightly smaller than the grip portion 12, it can be fixed so that it is hard to come off without adhering. In addition, as another example, it is possible to adhere using an adhesive tape, it is also possible to form a groove on the end surface of the handle member and insert the end surface of the paper cylinder into this groove to fix it. It is also possible to form a protrusion on the back plate portion of the above and fit and fix it in the concave portion of the paper cylinder, and the present invention also includes such fixing means.

In order to assemble the composite container of this embodiment, the container body 1 is slightly deformed and inserted into the inside of a paper tube 3 formed by adhering the handle member 2 to form a paper tube, and the protruding portion of the body portion 7 is inserted. 1
The grip 12 is aligned with the outer peripheral surface of 0 and fixed. However, it is also possible to bond the handle member 2 to the blank of the paper tube 3 and wind it around the body portion 7 of the container body 1 without forming the paper tube shape and then bond the overlapping portion 14. This may be selected according to the ease of deformation of the container body 1. Then, in order to separate the paper tube 3 from the container body 1, it is only necessary to deform the container body 1 and remove the paper tube 3, and the paper tube 3 can be reused. In the present invention, since the grip portion 12 is molded of plastic resin, it is more suitable for environmental protection if it is separated so that it can be reused, rather than being disposable.

According to this embodiment, since the projecting portion 10 is formed on the body portion 7 of the container body and is fixed so that the peripheral surface and both side surfaces are covered with the grip portion 12, the paper tube 3 is left and right when used. It is possible to prevent slippage. Further, since the paper tube 3 is held between the upper and lower steps 6 and 8 of the container body 1, the paper tube 3 does not come off during use. Further, the shoulder portion 5 of the container body 1
Since the thickness of the base and the bottom portion 9 are formed thick, the strength of the container does not decrease, and the deformation of the shoulder portion 5 and the bottom portion 9 can be prevented, so that the paper tube 3 can be prevented from coming off during use. There is.

[0019]

According to the composite container of the present invention, since the body portion of the container body is reinforced by the paper tube, the container body can be made significantly thinner than before, and the amount of plastic material used is reduced due to environmental problems. It can greatly contribute to. Further, since the paper cylinder reinforces the strength of the container body at the time of use, there is an advantage that deformation or bending of the container body can be prevented and the container can be easily used even if the amount of contents is reduced. Further, there is an advantage that it can be applied to containers of any shape without giving restrictions on the container body in terms of design. And since the handle member is made of plastic, its strength does not decrease even if it gets wet with liquid during use, and the handle member is firmly fixed to the paper tube and there is no danger of it coming off during use. Furthermore, after use, it can be easily removed by simply pulling out the paper tube from the container body, making it easy to separate and collect,
This is a practically excellent composite container in which the paper cylinder can be reused if it is separated without damage.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of a handle member in FIG.

3 is a development view of the blank of the paper tube in FIG. 1. FIG.

FIG. 4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a perspective view showing a conventional example.

6 is a partial cross-sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Container main body 2 ... Handle member 3 ... Paper cylinder 4 ... Neck part 5 ... Shoulder part 6 ... Step 7 ... Body part 8 ... Step 9 ... Bottom part 10 ... Protrusion part 11 ... Back plate part 12 ... Gripping part 13 ... Gripping part insertion Hole 14 ... Overlapped portion 15 ... Adhesive point

Claims (1)

[Claims] 1. A composite container in which a body of a container body made of a thin plastic bottle is held by a paper cylinder to which a handle member is adhesively fixed, and the handle member is made of plastic and comprises a back plate portion and a grip portion. A composite container, characterized in that the back plate is fixed to the inner surface of the paper cylinder, and the grip portion is projected from the handle insertion hole to the outer surface of the paper cylinder.