JPH08275809A - Manufacture of bag - Google Patents

Abstract

PURPOSE: To provide a method for manufacturing a bag with which processes requiring the execution of complicated manual work can be reduced, power saving or automation can be easily attained, cost is reduced and a light and high-strength bag can be manufactured. CONSTITUTION: In this manufacture of bag, an element 1 in a flat shape consisting of the main body of the bag is made uneven by molding it corresponding to the ruggedness of the bag, afterwards, a folding part 6 is bent and a basic shape is prepared.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a school bag, a student bag, an attache case, a travel bag, a bag for storing a mobile phone,
The present invention also relates to an appropriate bag manufacturing method.

[0002]

2. Description of the Related Art Conventionally, a bag is made by first cutting the material forming the main body of the bag for each of the constituent parts such as the accommodating part, the back part, and the covering part so that they are separated according to their shapes.
It was manufactured by sewing and joining together a large number of materials separated by cutting.

However, in such a manufacturing method, since many steps are required to perform complicated manual work for cutting and sewing, it is difficult to save labor and mechanize, and the cost is high. .

The bag manufactured by this conventional manufacturing method is heavy because it is made of a large amount of material and has many sewn portions.
Moreover, the strength was low.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention
There are few processes that require complicated manual work, labor saving and mechanization are easy, cost is low, and
An object of the present invention is to provide a bag manufacturing method capable of manufacturing a bag that is lightweight and has excellent strength.

[0006]

In order to solve the above-mentioned problems, the present invention takes the following technical means.

According to the method of manufacturing a bag of the present invention, the flat material forming the main body of the bag is formed by embossing in correspondence with the unevenness of the bag, and then the folded portion is bent to form the basic shape. It was done.

After forming irregularities by embossing, the outer periphery of the material may be cut into a required shape. Further, accessories may be appropriately attached to the cut material.

[0009]

As a result of adopting the above means, the present invention has the following effects.

In the bag manufacturing method of the present invention, since the respective constituent parts of the bag body are continuously formed on one sheet of material by embossing, it is possible to reduce the number of places where cutting and sewing are required. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the accompanying drawings.

According to the method of manufacturing a bag of the present invention, the flat material 1 constituting the main body of the bag is formed by embossing corresponding to the unevenness of the bag, and then the folded portion is bent to form the basic shape. It is the one.

FIG. 1 shows a raw material 1 used in the bag manufacturing method of the present invention. This material 1 has a flat rectangular plate shape and is made of a relatively hard vinyl chloride or urethane material in order to maintain the shape of at least the portion formed into an uneven shape by the embossing process described later. Is preferred. In addition, in order to make at least one side of the bag soft, a hard material and a soft material may be overlapped.

First, in the embossing step, the material 1 is embossed to have an uneven shape corresponding to the unevenness of each component of the completed bag. In the embossing process of this embodiment, since the bag to be manufactured is a school bag, as shown in FIG. 2, the accommodating part 2, the back part 3, the covering part 4, and the opening / closing part 5 are arranged along the longitudinal direction of the material 1. Folded portions 6 are formed at the boundaries between the constituent parts of the bag body and the constituent parts.

Each component of the bag body is
Since the material 1 can be continuously formed on one piece of the material 1, labor saving and mechanization are easy, and the material 1 can be effectively used without any wasted portion except the outer peripheral portion.

Next, the material 1 that has undergone the embossing process is cut along the dotted line shown in FIG. 2 in the next cutting process.
FIG. 3 is a view showing the state after cutting, in which one end 7 of the material 1 is cut off and an opening 8 is formed in the housing 2.

In this cutting step, since it is not necessary to separately separate the respective constituent parts of the bag body, the number of cutting points can be reduced, and only the outer peripheral part of the material 1 can be cut, and the opening / closing part 5 With the exception of the opening 8 of the housing portion 2, it may be cut in a straight line, so that labor saving and mechanization are easy. In addition, the amount of wasteful scraps and scraps that cannot be used is extremely small, and the removal work is easy.

Further, the raw material 1 that has undergone the cutting process is bent at the folding portion 6 in the next bending process to be formed into the basic shape of the bag body. Then, the bag 1 as shown in FIG. 4 is completed by sewing the necessary portions of the material 1 having the basic shape. In this embodiment, the peripheral portions of the respective constituent portions are sewn so that the peripheral portions of the respective constituent portions are folded inward and the peripheral portions of the accommodation portion 2 and the back portion 3 are sewn.

In this embodiment, appropriate accessories such as the back cord 9, the storage portion 10, the cushion material 11, and the opening / closing lock 12 are attached to the material 1 in a cut state before proceeding to the bending step. ing. Since the material 1 in the cut state is not yet completely three-dimensional, the attachment of the accessory is easier than the material 1 after being made into a three-dimensional basic shape by the bending process, and its mechanization is also possible. It's easy.

As described above, in the bag manufacturing method of the present invention, the number of parts that need to be cut and sewn is very small, so there are not many complicated manual steps, and labor saving and mechanization are easy. .

The bag manufactured by the manufacturing method of the present invention is formed by bending one sheet of material 1 in which the respective constituent parts are continuously formed, and the material 1 of each of the constituent parts is formed. Since there are few double-overlapped portions and sewn portions, the strength is excellent, and moreover, the amount of the raw material 1 used is small, and the weight can be reduced.

In addition to the school bag described above, the bag manufacturing method of the present invention can manufacture a student bag, an attache case, a travel bag, a bag for storing a mobile phone, and any other suitable bag.

FIG. 5 shows the raw material 1 after the embossing step when the bag to be manufactured has a rectangular box shape. When manufacturing a bag of this shape, about half of the material 1 is used as the lid portion 13 and the remaining portion is the accommodating portion 14 as shown in the figure, and the boundary between the lid portion 13 and the accommodating portion 14 is subjected to the embossing process. The folded portion 15 is formed.

Next, as in the case of the school bag, it is cut along the dotted line in the figure, and the accessories such as the fastener 16 and pockets are attached, bent, and the necessary parts are sewn to be shown in FIG. The bag that looks like it is completed.

[0025]

The method of manufacturing a bag according to the present invention has the above-mentioned structure, and the respective constituent parts of the bag body are continuously formed on one material by embossing, and are cut or sewn. Since there are few parts that need to be dressed, there are few steps that need to perform complicated manual work, labor saving and mechanization are easy, cost is low, and it is lightweight and has excellent strength. A bag can be manufactured.

[Brief description of drawings]

FIG. 1 is a perspective view of a material used in an embodiment of a bag manufacturing method of the present invention.

FIG. 2 is a perspective view showing the material used in the embodiment of the bag manufacturing method of the present invention after undergoing the embossing step.

FIG. 3 is a perspective view showing a raw material used in the embodiment of the bag manufacturing method of the present invention after a cutting process.

FIG. 4 is a perspective view showing a bag completed by using the embodiment of the bag manufacturing method of the present invention.

FIG. 5 is a perspective view showing a material used in another embodiment of the bag manufacturing method according to the present invention after undergoing the embossing step.

FIG. 6 is a perspective view showing a bag completed by using another embodiment of the bag manufacturing method of the present invention.

[Explanation of symbols]

 1 Material 6 Folding part

Claims (3)

[Claims] 1. A bag characterized in that a flat material forming a main body of a bag is formed by embossing so as to correspond to the unevenness of the bag and then the folded portion is bent to form a basic shape. Manufacturing method. 2. The method for manufacturing a bag according to claim 1, wherein the outer periphery of the material is cut into a required shape after the unevenness is formed by embossing. 3. The method for manufacturing a bag according to claim 2, wherein accessories are appropriately attached to the cut material.