JPH06170986A - Manufacture of bag - Google Patents

Abstract

PURPOSE:To decrease manufacturing cost and to enable mass production by manufacturing a bag having a laminated structure which incorporates the part to be welded and the part not to be welded in an automated manufacturing line. CONSTITUTION:The upper sheet material 7 is placed over the lower sheet material 9. A pair of side sheet materials are arranged in a bent state between the upper sheet material 7 and the lower sheet material 9. The insulating sheet material 11 is inserted between the bent side sheet materials. In this state, the laminated part constituted of the upper sheet material 7, the side sheet materials, the insulating sheet material 11 and the lower sheet material 9 is heated and pressurized along the longitudinal direction of the sheet material. Thereby the side sheet materials are bonded to the upper sheet material 7 and simultaneously the lower sheet material is bonded to the side sheet materials. The laminated part and the two-layer part of the upper sheet material 7 and the lower sheet material 9 are simultaneously bonded in the cross direction of the sheet material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag manufacturing method, and more particularly to a bag manufacturing method capable of efficiently manufacturing a bedding bag for accommodating a bedclothing or the like.

[0002]

2. Description of the Related Art Conventionally, a bedding bag for accommodating bedding equipment and the like has been known, and various types of bedding bags have been manufactured. An example of a conventional sleeping bag will be described below with reference to FIG. FIG. 11 is a perspective view showing an example of a conventional sleeping bag. Referring to FIG. 12, a conventional bedding bag 51 is provided with a fastener 52 at a predetermined position for opening and closing the bedding bag 51 when accommodating bedding equipment and the like. In addition, a welded portion (hereinafter referred to as a "seal portion") with each sheet material constituting the surfaces adjacent to each other is formed in the peripheral portion of each surface defining the conventional bedding bag 51. As a result, the seal portions 53, 53a, 53b, etc. are formed on each side.

Next, a method of manufacturing the conventional bedding bag 51 having the above structure will be described. Conventional sleeping bag 51
12 is manufactured by preparing a plurality of sheet materials constituting each surface of the bedding bag 51 and manually adhering their peripheral portions to each other by using a predetermined mold.
The bedding bag 51 shown in FIG.

[0004]

However, the above-described conventional method for manufacturing the sleeping bag 51 has the following problems. In the conventional bedding bag 51 shown in FIG. 12, the bedding bag 51 is formed by sealing each side defining each surface. However, in the case where it is attempted to form the vertically overlapping seal portions in the state shown in FIG. 12, for example, the seal portion 53a and the seal portion 53b, the respective seal portions 53a and 53b are conventionally formed in separate steps. And it had to be done manually.

This is because when the seal portions 53a and 53b, which are in the positional relationship of being overlapped with each other in plan view, are simultaneously sealed, the respective seal portions 53a and 53b are welded to each other. Therefore, when the conventional sleeping bag 51 is created, manual work is required. Therefore, the productivity is low and the manufacturing cost is high. From the above, from the past,
It has been strongly desired to improve productivity and reduce manufacturing cost by efficiently manufacturing the above-described bedding bag 51 on an automated production line.

The present invention has been made to solve the above-mentioned problems, and improves the productivity and manufacture by efficiently manufacturing bags such as bedding bags in an automated production line. It is an object of the present invention to provide a bag manufacturing method that can reduce costs.

[0007]

According to the bag manufacturing method of the present invention, the upper sheet material and the lower sheet material are first superposed. Then, between the upper sheet material and the lower sheet material, a pair of side sheet materials are arranged in a bent state. At this time, the side sheet material may be a sheet material forming a part of the upper sheet material or the lower sheet material, or may be a sheet material separate from the upper sheet material or the lower sheet material. An insulating sheet material is inserted between the bent side sheet materials.

With the insulating sheet material interposed between the side sheet materials, the laminated portion including the upper sheet material, the side sheet material, the insulating sheet material, and the lower sheet material is formed into a long sheet material. By heating and pressurizing along the depth direction,
At the same time that the upper sheet material and the side sheet material are bonded together, the side sheet material and the lower sheet material are bonded together. Then, the upper sheet material, the side sheet material, the insulating sheet material, the laminated portion of the lower sheet material, and the two-layer portion of the upper sheet material and the lower sheet material are arranged along the width direction of the sheet material. Bond at the same time.

[0009]

According to the present invention, the upper sheet material, the side sheet material, the insulating sheet material, and the lower sheet material are provided with the insulating sheet material interposed between the bent side sheet materials. The laminated portion is heated and pressed along the length direction of the sheet material. At this time, since the insulating sheet material is interposed between the bent side sheet materials,
The folded side sheet materials do not weld to each other.

This makes it possible to bond the upper sheet material and the side sheet material and the side sheet material and the lower sheet material without adhering the bent side sheet materials to each other. That is, when forming a plurality of vertically overlapping seal portions, it is possible to form a plurality of seal portions at the same time in a state where the seal portions are not welded to each other.

Further, a laminated portion of the upper sheet material, the side sheet material, the insulating sheet material and the lower sheet material, and a two-layer portion of the upper sheet material and the lower sheet material are provided along the width direction of the sheet material. By bonding at the same time, the upper sheet material and the side sheet material are bonded together in the laminated portion,
It is possible to bond the lower sheet material and the side sheet material,
In the two-layer portion, the upper sheet material and the lower sheet material can be bonded to each other. Also in this case, since the insulating sheet material is interposed between the bent side sheet materials in the laminated portion, the bent side sheet materials are not bonded to each other.

From the above, it is possible to simultaneously form a plurality of vertically overlapping seal portions in one step, and therefore the bag manufacturing method according to the present invention is automated. It becomes possible to efficiently manufacture bags according to the production line.

[0013]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a plan view showing a sleeping bag 1 manufactured according to the present invention. Figure 2
It is a perspective view which shows the sleeping bag 1 in three dimensions. FIG. 3 shows FIG.
2 is a side view of the sleeping bag 1 shown in FIG.

First, referring to FIG. 1, the shape of a sleeping bag 1 formed according to the present invention is defined by a first seal portion 3a, a second seal portion 3b and a third seal portion 3c. . A fastener 2 for opening and closing the sleeping bag 1 is attached to the upper surface thereof. FIG. 2 shows the bedding bag 1 in a state in which the bedding equipment can be stored. With reference to FIG. 2, when the above-mentioned bedding bag 1 is put in a state capable of accommodating the bedding equipment, in this case, it becomes a rectangular parallelepiped shape. That is, the sleeping bag 1 is composed of the upper surface 4, the lower surface 5 and the side surfaces 6a and 6b.

The side surface 6a includes the first seal portion 3a and the second seal portion 3b. Also, the side surface 6b
Is defined by the third seal portion 3c and a line connecting the connection points of both ends of the third seal portion 3c and the second seal portion 3b in the height direction. Also, the upper surface 4 and the lower surface 5
Is defined by the third seal portion 3c and a line connecting the connection points between the both ends of the third seal portion 3c and the second seal portion 3b in the width direction. Further, in this case, the fastener 2 is provided from the upper surface 4 to the first seal portion 3a on the side surface 6a.

Next, referring to FIG. 3, the above-mentioned bedding bag 1
As described above, the side surface 6a of the
A fastener 2 is provided so as to extend from the. Then, the first seal portion 3a and the second seal portion 3b are formed on the side surface 6a. First seal part 3a
Is located near the center of the sleeping bag 1 in the height H direction. A second seal portion 3b is provided at a predetermined angle with the first seal portion 3a. The height H of the sleeping bag 1 is defined by the second seal portion 3b.

Here, referring again to FIG. 1, the first seal portion 3a and the second seal portion 3b are formed to have a predetermined angle θ. In this way, by having the predetermined angle θ, when the sheet is deformed three-dimensionally as shown in FIG. 2, there is no portion where the sheet materials overlap on the side surface 6a. This also improves the appearance of the side surface portion. In addition, the height H of the sleeping bag 1 can be adjusted by appropriately selecting the value of the angle θ.

Next, a method of manufacturing the sleeping bag 1 having the above structure will be described with reference to FIGS. Figure 4
FIG. 3 is a conceptual diagram schematically showing an example of a manufacturing apparatus for manufacturing the bedding bag 1 according to the present invention described above. 5 to 11 are views showing the bedding bag 1 in each manufacturing process of the bedding bag 1 according to the present invention.

According to the method for manufacturing the bedding bag 1 of the present invention, the bags are mass-produced in accordance with one automated production line, instead of manually manufacturing the bags one by one as in the conventional case. It becomes possible. In this way, the manufacturing method of the bedclothing bag 1 according to the present invention will be described below on the basis of the reason that the bags can be mass-produced in accordance with the automated production line.

Referring first to FIG. 4, a manufacturing apparatus for carrying out the method for manufacturing a bag according to the present invention, for example, when manufacturing a sleeping bag 1 of the type shown in FIG.
The fastener mounting means 13, the side sheet material bending means 15, the insulating sheet material inserting means 17, the first sealing means 19, and the second sealing means 21 are provided.

The fastener attaching means 13 is a device for attaching the fastener 2 of the sleeping bag 1 shown in FIG. Therefore, this fastener attaching means 13 is shown in FIG.
It can be said that the apparatus is installed when manufacturing the bedding bag 1 shown in FIG. The side sheet material folding means 15 is means for disposing the side sheet materials 7a and 7b between the upper sheet material 7 and the lower sheet material 9 in a folded state.

The insulating sheet material inserting means 17 is a device for inserting the insulating sheet material 11 between the bent side sheet materials 7a and 7b. The first sealing means 19 is a device for simultaneously adhering a laminated portion of the upper sheet material 7, the side sheet materials 7a and 7b, the insulating sheet material 11 and the lower sheet material 9 along the length direction of the sheet material. Is. The second sealing means 21 includes an upper sheet material 7 and side sheet materials 7a,
7b, an insulating sheet material 11, a lower sheet material 9 and a two-layer portion of an upper sheet material 7 and a lower sheet material 9 are simultaneously bonded along the width direction of the sheet material.

Next, the method for manufacturing a bedding bag according to the present invention using the manufacturing apparatus having the above structure will be described in more detail. Again referring to FIG. 4, first, the upper sheet material 7, the lower sheet material 9 and the insulating sheet material 11 are installed at predetermined positions. Then, the upper sheet material 7 is fed into the fastener attaching means 13 via the support member 10. As a result, the fastener 2 is attached to the upper sheet material 7 by the fastener attaching means 13. The upper sheet material 7 may be a polyethylene-based sheet material, a vinyl chloride-based sheet material, or a polypropylene-based sheet material. The material of the lower sheet material 9 is the same as the material of the upper sheet material.

After the fastener 2 is attached to the upper sheet material 7 as described above, the upper sheet material 7 with the fastener 2 is fed into the side sheet material folding means 15. Here, an example of the side sheet material folding means 15 will be described with reference to FIG. FIG. 5 is a schematic sectional view showing an example of the side sheet material folding means 15. Referring to FIG. 5, side sheet material folding means 15
Has two bent portions 15a and 15b.

As a result, when the upper sheet material 7 passes through the side sheet material folding means 15, both ends thereof are bent along the bent portions 15a and 15b. As a result, the side sheet materials 7a and 7b are formed. As a result, the upper sheet material 7 after passing through the side sheet material folding means 15 has a three-layer structure of the upper sheet material 7 and the side sheet materials 7a and 7b at both ends in the width direction. Become.

Next, the lower sheet material 9 is arranged at a predetermined distance below the upper sheet material 7 having the three-layer structure at both ends as described above. This lower sheet material 9 also
It is arranged so as to be located below the upper sheet material 7 via the support member 10. This state is shown in FIG. FIG. 6A is a perspective view schematically showing the lower sheet material 9 arranged below the upper sheet material 7. FIG. 6B is a VIB-VIB in FIG.
It is a figure which shows the cross section seen along the line. With reference to FIGS. 6A and 6B, in this state, the upper sheet material 7 is provided below both ends in the width direction of the upper sheet material 7.
And the side sheet materials 7a and 7b and the lower sheet material 9
It has a layered structure.

Next, the insulating sheet material 11 is inserted between the side sheet material 7a and the side sheet material 7b in the above state. This is done by the insulating sheet material inserting means 17. The material of the insulating sheet material 11 is preferably nylon, polyester, bakelite or the like. FIG. 7 shows a state in which the insulating sheet material 11 is inserted between the side sheet materials 7a and 7b in this manner.
FIG. 7A is a perspective view showing that the insulating sheet material 11 is inserted between the side sheet materials 7a and 7b. FIG. 7B shows VIIB-VI in FIG. 7A.
It is a figure which shows the cross section seen along the IB line.

Referring to FIGS. 7 (a) and 7 (b),
As described above, the insulating sheet material 11 is the side sheet material 7
By being inserted between a and 7b, the upper sheet material 7
Below both ends in the width direction, a five-layer structure including the upper sheet material 7, the side sheet materials 7a and 7b, the insulating sheet material 11, and the lower sheet material 9 is formed.

Next, as described above, each sheet material (7, 7a, 7b, 9, 11) is divided into the first sheet material (7, 7a, 7b, 9, 11) in the state where the above-mentioned five-layer laminated structure is formed at both ends of the upper sheet material 7. 1
It is fed into the sealing means 19. Then, by this first sealing means 19, a desired portion in the above-mentioned five-layer laminated structure portion in the vicinity of both ends of the upper sheet material 7 is
It will be welded at the same time along the length L direction of the upper sheet material 7.

This state is shown in FIG. Figure 8
FIG. 6A is a plan view showing a state in which the above-mentioned five-layer laminated structure portion is simultaneously welded by the first sealing means 19. FIG. 8B shows VIIIB- in FIG. 8A.
It is a figure which shows the cross section seen along the VIIIB line. Figure 8
Referring to (a) and (b), the above-mentioned five-layer laminated portion is simultaneously welded by the third sealing means 19 to form the first sealing portion 3c.

At this time, referring to FIG. 8B, the upper sheet material 7 and the side sheet material 7a are bonded together, and at the same time, the side sheet material 7b and the lower sheet material 9 are bonded together. The side sheet material 7a and the side sheet material 7b are not bonded. The reason for this will be described in detail below. As described above, as the material of the upper sheet material 7, polyethylene, vinyl chloride or polypropylene materials are mainly used. The material of the lower sheet material 9 is the same as the material of the upper sheet material 7.

At this time, as the material of the insulating sheet material 11, an insulating material such as nylon, polyester, or bakeride is mainly used. Here, for example, a case where vinyl chloride is used as the material of the upper sheet material 7 and the lower sheet material 9 and polyester is used as the insulating sheet material 11 will be described. The welding condition between the vinyl chloride sheet materials and the welding condition between the vinyl chloride and the polyester may be different. That is, there is a condition that vinyl chloride is welded to each other but vinyl chloride and polyester are not welded.

Therefore, when a plurality of laminated structures of vinyl chloride are attempted to be adhered at the same time via polyester, the vinyl chloride is welded to each other by appropriately selecting the adhering conditions, but vinyl chloride and polyester are It is possible to obtain a state where no welding occurs. Thereby,
As shown in FIG. 8B, the upper sheet material 7 and the side sheet material 7a made of vinyl chloride are welded to each other, but the side sheet material 7a and the insulating sheet material 11 are not welded. It will be. As a result, as shown in FIG. 8B, it is possible to bond the upper sheet material 7 and the side sheet material 7a and simultaneously bond the side sheet material 7b and the lower sheet material 9. .

As an example of the welding conditions for simultaneously welding only a desired portion of the above-mentioned five-layer structure, a high-frequency welder and a heating means can be used. Under the above welding conditions, the proportion of the high frequency welder is preferably 80 to 90%.
It is a degree. At this time, the rate of heating by the heating means is preferably about 10 to 20%.

As described above, by appropriately selecting the material of the sheet material to be laminated and the welding conditions, only the desired portion in the laminated structure of the sheet material having the portion to be welded and the portion not to be welded is selected. It is possible to weld at the same time.

Next, after the third seal portion 3c in the length L direction of the sheet material is formed by the first seal means 21 as described above, the second seal means 21 is formed as shown in FIG. Thus, the sheet material is welded in the width W direction. By welding the sheet material in the width W direction by the second sealing means 21, the first sealing portion 3a and the second sealing portion 3b are formed.

At this time, in the second seal portion 3b,
Similar to the case of forming the third seal portion 3c described above, the upper sheet material 7, the side sheet materials 7a and 7b, the insulating sheet material 11, and the lower sheet material 9 have a five-layer structure, The upper sheet material 7 and the side sheet material 7a are welded at the same time as the side sheet material 7b and the lower sheet material 9 are welded by the same principle as in the case of forming the third seal portion 3c. Become.

On the other hand, in the first seal portion 3a, the insulating sheet material 11 and the side sheet materials 7a and 7b are not provided, and the upper sheet material 7 and the lower sheet material 9 have a two-layer structure. . Therefore, in this portion, the upper sheet material 7 and the lower sheet material 9 are welded to each other to form the first seal portion 3a.

As described above, by the second sealing means 21, the first and second sealing portions 3 in the width W direction of the sheet material.
Therefore, a and 3b are simultaneously formed in one process.
After that, the bedding bag 1 in the state shown in FIG. 10 is obtained by undergoing various steps such as removing unnecessary portions of the bedding bag 1.

As described above, according to the bag manufacturing method of the present invention, a plurality of sheet materials are moved at the same time, and the first, second and third seal portions 3a, 3b, 3 are continuously moved.
Since c can be formed, bags can be continuously formed on an automated production line. That is, productivity can be improved by mass-producing bags such as the sleeping bag 1 according to an automated production line.

Although the method of manufacturing the bedding bag 1 with a fastener has been described in the above embodiment, the present invention can be applied to the manufacture of other bags. In the above embodiment, the side sheet materials 7a and 7b are also used.
Is composed of a part of the upper sheet material 7. However, as shown in FIG. 11, the upper sheet material 7 and the side sheet material 8 may be separate sheet materials.

FIG. 11 is a sectional view showing a case where separate sheet materials are used for the upper sheet material 7 and the side sheet material 8, and is a view showing a sleeping bag at a stage corresponding to FIG. 7 (b). is there. As shown in FIG. 11, a side sheet material 8 separate from the upper sheet material 7 is disposed between the upper sheet material 7 and the lower sheet material 9 in a folded state, and the folded side sheet material is disposed. Even if the insulating sheet material 11 is inserted between the sheets 8, the same operation and effect as in the case of the above embodiment can be obtained.

Further, in the above embodiment, the case where only the desired portion of the sheet material having the laminated portion of the five-layer structure is adhered at the same time has been described. However, the present invention is not limited to this, and the present invention can be applied to a case where a plurality of layers of sheet materials are laminated and a portion to be welded and a portion not to be welded are included. Furthermore, the insulating sheet material 11 interposed between the sheet materials
Does not have to be a sheet-shaped insulating material, and may be another insulating material.

[0044]

As described above, according to the present invention,
In a sheet material having a laminated structure including a portion to be welded and a portion to be not welded, it becomes possible to weld only a desired portion at the same time in one step. As a result, it becomes possible to simultaneously bond a plurality of seal portions existing at overlapping positions in plan view at the same time, which has conventionally been required to be performed manually, without the seal portions being welded to each other. As a result, it becomes possible to manufacture the above-mentioned bags, which conventionally had to be manually carried out one by one, on an automated production line. As a result, it becomes possible to reduce the manufacturing cost and mass-produce.

[Brief description of drawings]

FIG. 1 is a plan view showing a bedding bag formed according to the present invention.

FIG. 2 is a perspective view showing a three-dimensionally deformed sleeping bag formed according to the present invention.

FIG. 3 is a front view of the sleeping bag in the state shown in FIG.

FIG. 4 is a schematic view showing an example of an apparatus capable of carrying out the bag manufacturing method according to the present invention.

FIG. 5 is a cross-sectional view showing an example of a side sheet material folding means.

FIG. 6A is a perspective view of a sheet material showing an upper sheet material having a side sheet material portion and a lower sheet material superposed on each other. (B) is VIB-VI in (a)
It is a figure which shows the cross section seen along the B line.

FIG. 7A is a perspective view of a sheet material showing an insulating sheet material interposed between side sheet materials. (B)
[Fig. 7] is a view showing a cross section taken along line VIIB-VIIB in (a).

FIG. 8A is a plan view of the sheet member showing that the third seal portion is formed with the insulating sheet material interposed between the side sheet materials by the first sealing means.
(B) is a figure which shows the cross section seen along the VIIIB-VIIIB line in (a).

FIG. 9 is a plan view of the sheet material showing a state where the first and second seal portions are formed by the second seal means.

FIG. 10 is a plan view showing a bedding bag formed according to the bag manufacturing method of the present invention.

FIG. 11 is a cross-sectional view showing a case where the upper sheet material and the side sheet material are separate sheet materials, and is a diagram showing a cross section in a state corresponding to FIG. 7B.

FIG. 12 is a perspective view showing an example of a conventional sleeping bag.

[Explanation of symbols]

 1,51 Bedclothing bag 3a First seal portion 3b Second seal portion 3c Third seal portion 7 Upper sheet material 7a, 7b, 8 Side sheet material 9 Lower sheet material 11 Insulating sheet material 15 Side sheet material Bending means 17 Insulating sheet material inserting means 19 First sealing means 21 Second sealing means

Claims (1)

[Claims] 1. A step of stacking an upper sheet material and a lower sheet material, a step of placing a pair of side sheet materials between the upper sheet material and the lower sheet material, and folding the pair of side sheet materials. And a step of inserting an insulating sheet material between the side sheet materials, in a state where the insulating sheet material is interposed between the side sheet materials, the upper sheet material, the side sheet material, The insulating sheet material and the lower sheet material are heated and pressed along the length direction of the sheet material so as to bond the upper sheet material and the side sheet material and at the same time to the side sheet. A step of adhering a partial sheet material and the lower sheet material, a laminated portion of the upper sheet material, the side sheet material, the insulating sheet material, and the lower sheet material, the upper sheet material and the Lower sheet Method of manufacturing a bag equipped with a step of bonding simultaneously the second layer portion, along the width direction of the sheet material with.