JPH07285545A - Foldable container - Google Patents

Abstract

PURPOSE:To make a container easy to fold and thin enough to completely open at the time of opening by forming a fold line on a composite sheet comprising a plastic sheet and a plastic film adhered to each other. CONSTITUTION:A container 2 and a lid 3 are formed on a composite sheet 1 comprising a plastic sheet 11 and a plastic film 12 adhered to each other, and also the plastic sheet 11 is cut with the plastic film 12 layer left between the package 2 and the lid 3, thereby forming a fold line 4. Since the fold line 14 can be extremely easily folded with small bending resistance of the left plastic film 12 and its elastic recovery force is small, the folded line may not expand and be finished in a thin state, as well as it can be completely opened to be flat when it is opened.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a folding container such as a card type.

[0002]

2. Description of the Related Art A folding container, such as a card type, which has been generally used in the past,
As shown in the sectional view in FIG. 4 and the sectional view in the use state in FIG. 5, the container portion 20 for storing the contents in the plastic sheet 110 is shown.
And a lid portion 30 and the like, and a folding line 40 formed in a rib shape is provided between the container portion and the lid portion to punch out the outer periphery.

The above conventional folding container has a folding line 4
Since 0 is a rib shape, the folding line 40 itself has a thickness when folded as shown in FIG. 5, which is not only inferior in appearance but also cannot be made as thin as a card. Further, when the similar concave and convex portions 50 formed on the container portion 20 and the lid portion 30 are fitted and fixed in the folded state, there is a problem that the folding line 40 spreads due to the elasticity.
Moreover, since the fold line 40 has a habit due to being folded, when the lid is opened, it does not return to a flat state as shown in FIG. 4 and does not open completely, and it is difficult to take out and insert from the container part. There are drawbacks.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made to improve the foldability and the appearance, which are problems of the prior art. A composite sheet obtained by laminating a plastic sheet and a plastic film is provided with a container portion. A folding container characterized in that a folding line formed by cutting a plastic sheet layer leaving a plastic film layer is formed between the container portion and the lid portion while forming a lid portion, which will be described below with reference to the drawings. .

FIG. 1 is a plan view showing an example of the folding container of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a sectional view showing a use state of the folding container shown in FIG. Is a cross-sectional view showing an example of a conventional folding container, and FIG. 5 is a cross-sectional view showing a use state of the folding container of FIG.

According to the present invention, as shown in FIGS. 1 to 3, the container portion 2 and the lid portion 3 are formed on the composite sheet 1 in which the plastic sheet 11 and the plastic film 12 are bonded together, and the container portion 2 and the lid portion 3 are formed. The folding container is characterized in that a folding line 4 formed by cutting the plastic sheet 11 layer while leaving the plastic film 12 layer therebetween is formed.

As the plastic sheet 11, a strong sheet made of thermoplastics such as polyvinyl chloride, polypropylene, polystyrene and polyethylene terephthalate can be used.

The plastic film 12 is made of thermoplastics such as polyvinyl chloride, polypropylene, polystyrene, polyethylene terephthalate, polyamide, polyethylene and the like, and those which are flexible and can withstand bending can be used.

The plastic sheet 11 has a wall thickness of 0.1 to 10.
1 mm, the plastic film 12 is 0.01 to 0.1
mm is preferable.

In order to obtain the composite sheet 1 by laminating the plastic sheet 11 and the plastic film 12, a usual dry laminating method can be adopted.

In order to form the container portion 2 and the lid portion 3 on the composite sheet 1, a desired shape can be finished by a general heating and pressing method, a vacuum forming method, a pressure forming method or the like, if necessary.

In order to form the folding line 4 formed by cutting the plastic sheet 11 layer while leaving the plastic film 12 layer, the penetration amount of the Thomson blade is adjusted to the thickness of the plastic sheet 11 layer, and the plastic sheet is formed. By cutting only the sheet 11, the 12 layers of the plastic film can be left.

In order to form the outline of the entire outer periphery of the folding container as shown in FIGS. 1 to 3, a male-female punching method or a Thomson punching method can be adopted.

When the folding container needs to be printed, it may be printed on the plastic film 12 and then laminated with the plastic sheet 11 or may be directly printed on the laminated composite sheet 1 and then with the container portion 2. Lid 3
The outer periphery can be removed and the folding line 4 can be formed by molding.

When using the obtained folding container,
As shown in FIG. 3, the container part 2 and the lid part 3 may be folded from the fold line 4 so that they face each other, and at this time, it is generally preferable that the plastic film 12 is placed inside the fold.

The folding line 4 is a plastic film 12
Since the plastic sheet 11 is cut by leaving the layers, the remaining plastic film 12 has a small bending resistance and can be bent very easily, and since the elastic recovery force is small, the folded product does not spread and is finished thinly. Also, when opened, it can be completely opened flat.

In order to fix it in the folded state, FIG.
As shown in FIG. 3, it is possible to form an extremely shallow adhesive recess 5 and attach a double-sided adhesive tape 51 to the inside thereof to adhere it to the lid 3 as shown in FIG.

Of course, as shown in FIG. 5, similar concave and convex portions 50 are formed on the container portion 2 and the lid portion 3 and these are fitted to each other, or a notch for locking (not shown) is formed on them. May be engaged and fixed in the folded state.

[0019]

According to the present invention, a container portion and a lid portion are formed on a composite sheet obtained by laminating a plastic sheet and a plastic film, and a plastic film layer is left between the container portion and the lid portion to form a plastic sheet layer. Since the folding container is characterized by forming a folding line formed by cutting, it is possible to obtain a folding container that can be easily folded, is thinner and has a good appearance, and can be completely opened when opened. .

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a folding container according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a cross-sectional view showing a use state of the folding container of FIG.

FIG. 4 is a sectional view showing an example of a conventional folding container.

FIG. 5 is a cross-sectional view showing a use state of the folding container of FIG.

[Explanation of symbols]

 1 Composite sheet 11 Plastic sheet 12 Plastic film 2 Container part 3 Lid part 4 Folding line

Claims (1)

[Claims] 1. A container sheet and a lid are formed on a composite sheet obtained by laminating a plastic sheet and a plastic film, and the plastic sheet layer is cut while leaving a plastic film layer between the container and the lid. Folding container characterized by forming a folding line that