JP2761509B2 - Storage bag for articles having sharp corners such as a triangle ruler and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage bag for inserting an article having an acute angle, such as a triangle ruler, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a storage bag such as a triangle ruler is formed of a plastic sheet or the like, but there is a problem that the bag is easily damaged by an acute angle portion of the triangle ruler or the like.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel storage bag which can prevent breakage of an article such as a triangle ruler caused by an acute angle portion, and to easily obtain a storage bag having such a structure. It is an object of the present invention to provide a manufacturing method capable of performing

[0004]

In order to achieve the above object, a storage bag for an article having an acute angle, such as a triangular ruler, according to the present invention has a substantially symmetrical front surface portion 4 and a rear surface portion 5 which can be bent freely. Connected to
And an acute angle of one of the front surface portion 4 or the back surface portion 5
A small piece 7 substantially symmetrical with the end 6 outside the end 6
Bendable and connected to the outside of the small piece 7
A bag in which sub-pieces 8 substantially symmetrical to 7 are connected in a freely bendable manner.
The prototype 3 is formed, and the small piece 7 and the sub-piece 8 are
After folding, an acute angle at the front surface portion 4 or the back surface portion 5
Triangular ruler etc. by folding over the inner surface of the end 6
Partially inserts only the sharp corner of an article having a sharp corner
A small inner bag part 2 is provided, and the front part 4 and the back
Means such as welding the required portion of the peripheral portion by folding the surface portion 5
With sharp edges such as a triangle ruler by joining with
Is provided with an outer bag part 1 capable of accommodating the entirety of the above.

The storage bag is formed by the following manufacturing method, that is, a substantially symmetrical front surface portion 4 and a rear surface portion 5 are connected so as to be freely bent, and one of the front surface portion 4 and the rear surface portion 5 is provided. A small piece 7 substantially symmetrical with the end 6 is formed outside the acute end 6 so as to be freely bent, and a sub-piece substantially symmetrical with the small piece 7 is provided outside the small piece 7. Forming a prototype 3 of a bag in which the parts 8 are connected in a freely bendable manner, first, the small piece 7 and the sub-small part 8 are folded, and then the acute angle shape on the front surface part 4 or the back surface part 5 is formed. Forming the small inner bag portion 2 by folding it on the inner surface side of the end portion 6, and then folding the front surface portion 4 and the back surface portion 5 and joining required portions of the peripheral portion by welding or the like. Thus, the outer bag 1 can be easily obtained by a manufacturing method characterized in that the outer bag 1 is formed.

[0006]

By inserting an acute angle portion of an article such as a triangle ruler into the small inner bag portion 2 provided inside the outer bag portion 1, the acute angle portion is doubled by the outer bag portion 1 and the small inner bag portion 2. Since it is covered, it is less susceptible to damage due to sharp corners.

Further, the small inner bag portion 2 can be easily formed by simply providing the small piece portion 7 and the sub-small portion portion 8 integrally with the original bag body 3 and folding them.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment relates to a storage bag for a triangle ruler and a method for manufacturing the same.

FIGS. 1 and 2 show a storage bag for a triangle ruler. This storage bag is made of a plastic sheet and has a triangular outer bag portion 1 and a small inner bag portion 2 provided inside the acute angle portion of the outer bag portion 1 so as to have a double structure. ing. When the triangular ruler is stored, the entire triangular ruler is covered by the outer bag portion 1, but the acute angle portion of the triangular ruler is partially accommodated in the small inner bag portion 2, and is formed by the small inner bag portion 2 and the outer bag portion 1. It will be doubly covered.

FIGS. 3 to 6 show the steps of manufacturing the storage bag of the above-mentioned triangle ruler. First, a bag prototype 3 having a shape as shown in FIG. 3 is formed from an appropriate thermoplastic plastic sheet. The bag prototype 3 has a triangular surface portion 4 and a back surface portion 5 which are substantially symmetrical to each other and are connected in a freely bendable manner. A small piece 7 having a substantially symmetrical shape with the end is continuously connected to bend freely.
Further, a sub-piece 8 substantially symmetrical to the small piece 7 is provided on the outside of the small piece 7 so as to be freely bent, and a narrow welding margin 9 is freely bent outside the back 5. A lid 11 having a tongue-shaped piece 10 protruding from the remaining side of the back surface 5 is connected to bend freely, and a suspension piece 12 is formed on the lid 11 and The portion 4 has a configuration in which the insertion port 13 of the tongue-shaped piece 10 is formed.

Next, as shown in FIG. 4, the small piece portion 7 and the sub small piece portion 8 are folded and further folded on the inner side of the surface portion 4 to form the small inner bag portion 2.

Then, as shown in FIG. 5, the front surface portion 4 is folded over the back surface portion 5.

Finally, as shown in FIG. 6, the welding allowance 9 provided on the back surface portion 5 is folded over the outer surface of the front surface portion 4 and both are welded (reference numeral 14 indicates the trace of welding) to form an outer bag. Part 1
To form In this welding step, the outer end of the sub-small portion 8 constituting the small inner bag portion 2 is also integrally welded to the inner surface portion of the front surface portion 4 (see FIG. 2), and the small inner bag portion 2 is fixed. I do. Thereby, the storage bag of the triangle ruler shown in FIG. 1 is completed.

[0014]

The storage bag for an article having an acute angle portion such as a triangle ruler of the present invention is as described above. When an article having an acute angle portion such as a triangle ruler is stored, breakage due to the acute angle portion can be prevented. effective. In addition, the method for manufacturing a storage bag for an article having an acute angle portion such as a triangle ruler of the present invention is as described above, and a storage bag that can prevent damage to the article such as a triangle ruler caused by the acute angle portion can be easily manufactured. This has the effect.

[Brief description of the drawings]

FIG. 1 is a plan view of a storage bag.

FIG. 2 is an end view taken along line AA of FIG.

FIG. 3 is a plan view of a prototype of the bag.

FIG. 4 is a plan view showing a state in which a small piece portion and a sub-small portion of a prototype bag are folded on the inner surface of the front surface portion.

FIG. 5 is a plan view showing a state in which the front surface portion and the back surface portion of the prototype bag are folded.

FIG. 6 is a plan view showing a state in which a welding allowance for a prototype bag is welded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer bag part 2 Small inner bag part 3 Prototype body of bag 4 Front surface part 5 Back part 6 Sharp end 7 Small piece part 8 Small piece part 9 Welding allowance 10 Tongue piece 11 Cover part 12 Hanging piece 13 Insert Mouth 14 mark of welding

Claims (2)

(57) [Claims] 1. A substantially symmetrical front surface portion 4 and a rear surface portion 5 are bent.
In addition to being freely connected, one of the front surface portion 4 or the back surface portion 5 is provided.
The outer edge of the end 6 having the acute angle is substantially symmetrical with the same end.
A small piece 7 is connected to bend freely, and further outside the small piece 7
The small piece 7 and the substantially symmetrical sub-piece 8 are connected to bend freely
To form a prototype 3 of the bag,
After folding the piece part 8 on the front part 4 or the back part 5
By folding it on the inner side of the sharp end 6
For articles with sharp edges, such as a triangle ruler, only those sharp edges
A small inner bag part 2 that can be inserted
The surface part 4 and the back part 5 are folded over to melt a required part in the peripheral part.
A sharp edge such as a triangle ruler can be formed by joining
A storage bag for an article having an acute angle portion, such as a triangle ruler , provided with an outer bag section 1 capable of accommodating the entire article . 2. A substantially symmetrical front surface portion 4 and a rear surface portion 5 are connected so as to be freely bendable, and one end of the front surface portion 4 or the rear surface portion 5 having an acute angle is formed on the outside of the end portion 6. And a small piece 7 having a substantially symmetrical shape and a sub-piece 8 substantially symmetrically formed outside the small piece 7. To form a prototype body 3
The small inner bag portion 2 is formed by folding the small piece portion 8 and the sub-piece portion 8 and then further folding it on the inner surface side of the acute angle end 6 on the front surface portion 4 or the back surface portion 5. Back part 5
Characterized in that the outer bag portion 1 is formed by folding and joining required portions of the peripheral portion by means of welding or the like, thereby producing a storage bag for articles having an acute angle portion such as a triangular ruler.