JP7034571B1 - How to use the bag, how to manufacture the bag, and the bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of using a bag body in which an open end of an inner cylinder in an unfolded state can be folded and easily stored inside an outer bag. SOLUTION: A bag-shaped outer bag 2 having a closed bottom portion 2b and an open tip portion 2a is provided inside the outer bag 2, and the bottom portion 3b side is fixed to the inner surface of the outer bag 2. The inner cylinder 3 is provided with an inner cylinder 3 and is folded so as to be located on the bottom 2b side of the chuck portion 2e so that the inner cylinder 3 can be closed by the chuck portion 2e, and the inner cylinder 3 is unfolded from the folded state. In this case, it has a deployed state in which it extends beyond the chuck portion 2e to the tip portion 2a side. A corner bending step of bending each corner portion 3a1 on both sides of the tip portion 3a of the inner cylinder 3 inward in the unfolded state, and a folding step of folding the bent tip portion 3a of the corner portion 3a1 into a folded state. The tip portion is closed by the chuck portion 2e after being folded. [Selection diagram] Fig. 1

Description

The present invention relates to a method of using a bag body provided with a fastener portion such as a chuck, a method of manufacturing the bag body, and a bag body.

Storage such as foodstuffs and seasonings is stored inside a resin bag, and the opening tip is closed with a chuck (fastener part) for storage. However, when the contained material passes through the chuck, it may adhere to the chuck and the sealability of the chuck may be deteriorated. In addition, there is a possibility that hygiene problems may occur due to the remaining contents on the chuck.

Patent Document 1 discloses an invention in which the contents do not adhere to the chuck when the contents are packed by adopting a structure in which the contents are packed with the chuck closed.

Japanese Unexamined Patent Publication No. 2004-155446

However, the invention described in Patent Document 1 has a configuration in which the contents do not adhere to the chuck when the contents are packed, but the contents come into contact with the chuck when the contents are taken out to the outside. Therefore, if the chuck is closed again when the contents are taken out and then stored, the contents may adhere to the chuck, resulting in deterioration of the sealability of the chuck and hygiene problems.
Further, when a liquid is stored in a commercially available chuck bag, if the chuck is not securely closed, there is a problem that the contained material adheres to the gap portion of the chuck or the liquid leaks.

Therefore, the present inventor has a bag-shaped outer bag having a closed bottom, an open tip, and a fastener portion that enables the closed and open states of the tip, and inside the outer bag. In a bag body provided with an inner cylinder whose base end side is fixed to the inner surface of the outer bag, the bag body is located on the bottom side of the fastener portion so as to be closed by the fastener portion. As described above, we invented a bag body in which the inner cylinder is folded and the opened end of the inner cylinder extends beyond the fastener portion toward the tip portion when unfolded from the folded state.

However, when the open end of the inner cylinder is folded from the unfolded state and the opened end folded from the tip of the outer bag to the inside of the outer bag is stored, there is no space between the outer bag and the inner cylinder and it is folded. We have found that it can be difficult to insert the end of the bag.

The present invention has been made in view of such circumstances, and is a method of using a bag body and a bag body that can be easily stored inside an outer bag by folding the open end of the inner cylinder in an unfolded state. It is an object of the present invention to provide a manufacturing method and a bag body.

In order to solve the above problems, the method of using the bag body of the present invention, the method of manufacturing the bag body, and the bag body adopt the following means.

A method of using the bag according to one aspect of the present invention is a bag-shaped outer having a closed bottom portion, an open tip portion, and a fastener portion that enables a closed state and an open state of the tip portion. A bag and an inner cylinder provided inside the outer bag and having a base end side fixed to the inner surface of the outer bag are provided, and the inner cylinder can be closed by the fastener portion. In addition, a folded state in which the inner cylinder is folded so as to be located on the bottom side of the fastener portion, and an unfolded state in which the open end of the inner cylinder extends beyond the fastener portion toward the tip portion when unfolded from the folded state. In the method of using the bag body having the state, the corner bending step of bending each corner portion on both sides of the opening end of the inner cylinder inward in the unfolded state, and the corner portion being bent. It has a folding step of folding the open end to bring it into the folded state, and a tip closing step of putting the tip into the closed state by the fastener portion after the folded state.

The contents are stored inside the outer bag. At this time, the fastener portion is closed, and the contents do not flow out from the open tip portion to the outside of the bag body. When the fastener portion is in the closed state, the inner cylinder is in the folded state so as to be located on the bottom side of the fastener portion, and does not interfere with the closed state of the fastener portion. In this way, the contents are doubly locked by the folding of the fastener portion and the inner cylinder, and the quality is well maintained.
When taking out the contents contained in the outer bag to the outside of the bag body, the fastener part is opened and the folded inner cylinder is unfolded to extend beyond the fasner part to the tip side. Make it a state. At this time, since the base end side of the inner cylinder is fixed to the inner surface of the outer bag, it is not separated from the outer bag. In this unfolded state, the contents pass through the inside of the inner cylinder and are taken out of the bag body. At this time, since the inner cylinder exists inside the fastener portion, the contents do not come into contact with the fastener portion. This makes it possible to prevent the contained material from adhering to the fastener portion.

Before folding the open end of the inner cylinder by the folding step, it was decided to bend the corner of the open end of the inner cylinder inward by the corner bending step. By bending the corners, the width of the inner cylinder on the open end side can be narrowed, so that the open end side of the inner cylinder can be easily inserted into the inner bag, and workability is improved.
The shape of the opening end may be trapezoidal by bending the corner portion of the opening end, or may be formed into a triangular shape so that the apex is formed on the tip end side of the inner cylinder.

In the method of using the bag body according to one aspect of the present invention, the inner cylinder has a rectangular shape with the corners on both sides set to 90 ° in the unfolded state.

Since both corners on the open end side of the inner cylinder have a rectangular shape with 90 °, if the width of the open end is large, the width of the inner cylinder can be narrowed by bending the corners, and the folding process Workability can be improved.

A method of manufacturing a bag according to one aspect of the present invention is a bag-shaped outer having a closed bottom portion, an open tip portion, and a fastener portion that enables a closed state and an open state of the tip portion. A bag and an inner cylinder provided inside the outer bag and having a base end side fixed to the inner surface of the outer bag are provided, and the inner cylinder can be closed by the fastener portion. In addition, a folded state in which the bag is folded so as to be located on the bottom side of the fasina portion, and an unfolded state in which the open end of the inner cylinder extends beyond the fasina portion to the tip end side when unfolded from the folded state. In the method of manufacturing a bag body having a state, an insertion step of inserting the inner cylinder into the inside of the outer bag from the tip end side of the bag-shaped outer bag, and an inside of the inner cylinder. It has a fixing step of fixing the base end side to the outer bag by adhesion with the heat-resistant member inserted in the bag.

Since it was decided to insert the inner cylinder inside the bag-shaped outer bag and fix the inner cylinder with a heat seal, it is easier than fixing the inner cylinder to the outer bag before it is made into a bag shape. It is possible to manufacture a bag body.
Since it was decided to heat-seal with the heat-resistant member inserted in the inner cylinder, the inner cylinder will not be closed by the heat seal. As the heat-resistant member, for example, a flexible sheet-shaped heat-resistant sheet or a plate-shaped heat-resistant plate having predetermined rigidity is used.

The bag according to one aspect of the present invention includes a bag-shaped outer bag having a closed bottom portion, an open tip portion, and a fastener portion that enables the closed and open states of the tip portion. An inner cylinder provided inside the outer bag and having a base end side fixed to the inner surface of the outer bag is provided, and the inner cylinder can be closed by the fastener portion. A folded state in which the inner cylinder is folded so as to be located on the bottom side of the fastener portion, and an unfolded state in which the open end of the inner cylinder extends beyond the fastener portion toward the tip portion when unfolded from the folded state. The outer bag is connected with the same width as the base end side of the inner cylinder, and extends toward the bottom of the outer bag to provide an internal space of the outer bag. It has a regulatory department to regulate.

The contents are stored inside the outer bag. At this time, the fastener portion is closed, and the contents do not flow out from the open tip portion to the outside of the bag body. When the fastener portion is in the closed state, the inner cylinder is in the folded state so as to be located on the bottom side of the fastener portion, and does not interfere with the closed state of the fastener portion. In this way, the contents are doubly locked by the folding of the fastener portion and the inner cylinder, and the quality is well maintained.
When taking out the contents contained in the outer bag to the outside of the bag body, the fastener part is opened and the folded inner cylinder is unfolded to extend beyond the fasner part to the tip side. Make it a state. At this time, since the base end side of the inner cylinder is fixed to the inner surface of the outer bag, it is not separated from the outer bag. In this unfolded state, the contents pass through the inside of the inner cylinder and are taken out of the bag body. At this time, since the inner cylinder exists inside the fastener portion, the contents do not come into contact with the fastener portion. This makes it possible to prevent the contained material from adhering to the fastener portion.

The base end side of the inner cylinder is fixed to the inner surface of the outer bag. It was decided to provide a regulating part that is connected with the same width as the base end side and extends toward the bottom of the outer bag to regulate the internal space of the outer bag. In this way, the regulation portion can define the internal space of the outer bag so that the width does not change discontinuously at the connection portion with the base end side of the inner cylinder, so that the contents housed in the inner space of the outer bag can be stored in the inner cylinder. It is possible to prevent the stagnation in the vicinity of the connection portion on the base end side as much as possible.

In the bag body according to one aspect of the present invention, the inner cylinder has a rectangular shape in which the corners on both sides of the open end are 90 ° in the unfolded state, or the corners on both sides are 90. It has a trapezoidal shape larger than °.

The shape of the open end of the inner cylinder may be a rectangle with both corners set to 90 ° in the unfolded state.
Alternatively, the shape of the open end of the inner cylinder may be a trapezoidal shape in which both corners are larger than 90 ° in the unfolded state. In this case, since the width is narrowed on the tip end side of the opening end of the inner cylinder, workability when folding the inner cylinder and storing it inside the outer bag is improved.

A bag according to one aspect of the present invention includes a bag-shaped outer bag having a closed bottom portion, an open tip portion, and a fastener portion that enables a closed state and an open state of the tip portion. The inner cylinder is provided with an inner cylinder arranged in the outer bag so that the base end side is located inside the outer bag, and the inner cylinder is provided from the fastener portion so as to be able to be closed by the fastener portion. A storage state in which the entire inner cylinder is moved relative to the outer bag after folding the open end side of the inner cylinder so as to be located on the bottom side, and a storage state in which the entire inner cylinder is moved relative to the outer bag, and the tip of the outer bag from the storage state. The portion side has a deployed state in which the entire inner cylinder is relatively moved with respect to the outer bag and the open end is positioned beyond the fastener portion when the open end is expanded.

The contents are stored inside the outer bag. At this time, the fastener portion is closed, and the contents do not flow out from the open tip portion to the outside of the bag body. When the fastener portion is in the closed state, the inner cylinder is in the folded state so as to be located on the bottom side of the fastener portion, and does not interfere with the closed state of the fastener portion. In this way, the contents are doubly locked by the folding of the fastener portion and the inner cylinder, and the quality is well maintained.
When taking out the contents contained in the outer bag to the outside of the bag body, the fastener part is opened and the folded inner cylinder is unfolded to extend beyond the fasner part to the tip side. Make it a state. In this unfolded state, the contents pass through the inside of the inner cylinder and are taken out of the bag body. At this time, since the inner cylinder exists inside the fastener portion, the contents do not come into contact with the fastener portion. This makes it possible to prevent the contained material from adhering to the fastener portion.

By moving the inner cylinder relative to the outer bag, a storage position for storing the inner cylinder in the outer bag and a deployed state in which the open end of the inner cylinder is located beyond the fastener portion of the outer bag are provided. I decided.
At the storage position, the fastener portion is closed and the open end of the inner cylinder is folded so that the contents do not leak.
In the unfolded state, the contents pass through the inside of the inner cylinder and are taken out of the bag body. At this time, since the inner cylinder exists inside the fastener portion, the contents do not come into contact with the fastener portion. As a result, it is possible to prevent the contained material from adhering to the fastener portion as much as possible.

A bag according to one aspect of the present invention includes a bag-shaped outer bag having a closed bottom portion, an open tip portion, and a fastener portion that enables a closed state and an open state of the tip portion. The inner cylinder is provided inside the outer bag and is fixed so that the bottom portion is located at the bottom portion of the outer bag, and the inner cylinder can be closed by the fastener portion. In addition, a folded state in which the inner cylinder is folded so as to be located on the bottom side of the fastener portion, and an unfolded state in which the open end of the inner cylinder extends beyond the fastener portion to the tip portion side when unfolded from the folded state. Each of the two side portions of the inner cylinder is located at a distance from the corresponding side portion of the outer bag and is fixed to the inside of the outer bag. ..

The contents are stored inside the inner cylinder fixed to the outer bag. At this time, the fastener portion is closed, and the contents do not flow out from the open tip portion to the outside of the bag body. When the fastener portion is in the closed state, the inner cylinder is in the folded state so as to be located on the bottom side of the fastener portion, and does not interfere with the closed state of the fastener portion. In this way, the contents are doubly locked by the folding of the fastener portion and the inner cylinder, and the quality is well maintained.
When taking out the contents contained in the inner cylinder to the outside of the bag body, the fastener part is opened, and the folded inner cylinder is unfolded and expanded beyond the fasuna part to the tip side. Make it a state. In this unfolded state, the contents pass through the inside of the inner cylinder and are taken out of the bag body. At this time, since the inner cylinder exists inside the fastener portion, the contents do not come into contact with the fastener portion. This makes it possible to prevent the contained material from adhering to the fastener portion.

The bottom of the inner cylinder is fixed to the outer bag in a state of being located at the bottom of the outer bag. As a result, the inner cylinder can be easily positioned with respect to the outer bag.

In the bag body according to one aspect of the present invention, a plurality of inner cylinders are provided in a stacked manner.

By stacking a plurality of inner cylinders, a plurality of types of contents can be stored separately in each inner cylinder.

In the bag body according to one aspect of the present invention, the inner cylinder has a dividing line for dividing an internal region into a plurality of parts.

A dividing line is provided to divide the inner cylinder into a plurality of internal areas. As a result, a plurality of types of contents can be stored separately in each internal area.

In the bag body according to one aspect of the present invention, the inner cylinder is formed with a notch that communicates the inside and the outside of the inner cylinder in a region located inside the outer bag in the unfolded state. ..

By forming a notch in the inner cylinder, it is possible to prevent the contents such as powder from being discharged from the open end to the outside when the inner cylinder is folded or opened. Specifically, before folding the inner cylinder, the end of the opening is grasped with one hand to close it so that the air inside is discharged from the notch. As a result, the air flowing out from the notch stays in the outer bag to the minimum without large powder flying from the end of the opening, so that it is possible to prevent the contents from being released to the outside of the bag body as much as possible.
When the inner cylinder is folded, the notch is also folded and closed, so that the contents are not released from the notch. Further, the notch may be formed at the same time as the inner cylinder is manufactured, or may be formed by the user with scissors or a toothpick after the manufacture.

The bag body according to one aspect of the present invention includes a tab portion provided through a cut portion that can be cut out from the outer bag and having a through hole formed therein.

By engaging with a hook or the like using the through hole of the tab portion, the bag body can be arranged at a desired position and made to stand by. Further, since the tab portion is connected to the outer bag via the cut portion, the bag body can be used by pulling the outer bag and separating it from the tab portion when using the bag body.

Since it is decided to store the opened end inside the outer bag after bending the corner portion, the opened end of the inner cylinder in the expanded state can be easily stored inside the outer bag.

It is a bag body which concerns on 1st Embodiment of this invention, and is the front view which showed the expanded state which the inner cylinder was expanded. It is a perspective view which showed the outer bag of FIG. It is a partially enlarged vertical sectional view which showed the open state of the chuck part of FIG. It is a partially enlarged vertical sectional view which showed the closed state of the chuck part of FIG. It is a perspective view which showed the inner cylinder of FIG. It is a front view which showed the state which one corner part of FIG. 1 was folded. It is a front view which showed the state which the other corner part was folded from the state of FIG. 5A. FIG. 5B is a front view showing a state in which the inner cylinder is folded along the second folding line in the upper row from the state of FIG. 5B. FIG. 5 is a front view showing a state in which the inner cylinder is folded along the second folding line in the middle from the state of FIG. 5C. FIG. 5 is a front view showing a state in which the inner cylinder is folded along the lower second folding line from the state of FIG. 5D. It is a perspective view which showed the state which took out the contained matter contained in a bag body. It is a front view which showed the bag body which formed the notch in the inner cylinder. It is the front view which showed the modification of the folding method of the inner cylinder corresponding to FIG. It is a front view which showed the state which one corner part of FIG. 8A was folded. It is a front view which showed the state which the other corner part was folded from the state of FIG. 8B. FIG. 8 is a front view showing a state in which the inner cylinder is folded along the second folding line in the upper row from the state of FIG. 8C. FIG. 8 is a front view showing a state in which the inner cylinder is folded along the second folding line in the lower row from the state of FIG. 8D. It is a front view which showed the bag body which concerns on 2nd Embodiment of this invention. It is a front view which showed the bag body which concerns on 3rd Embodiment of this invention. It is a perspective view which showed the use state of the tab part of the bag body shown in FIG. It is a front view which showed the bag body which concerns on 4th Embodiment of this invention. It is a perspective view which showed the state which the inner cylinder of FIG. 12 is slid. It is a perspective view which showed the state which took out the contents from the bag body of FIG. It is a front view which showed the bag body which concerns on 5th Embodiment of this invention. It is a front view which showed the bag body which concerns on 6th Embodiment of this invention. It is a front view which showed the bag body which concerns on 7th Embodiment of this invention. It is a side view of the bag body shown in FIG. It is a side view which showed the state which the tip part of the inner cylinder of the bag body shown in FIG. 17 was folded. It is a side view which showed the state which the tip part of the inner cylinder of the bag body shown in FIG. 17 was folded. It is a front view which showed the bag body which concerns on 8th Embodiment of this invention.

[First Embodiment]
Hereinafter, an embodiment of the bag body and the method of using the bag according to the present invention will be described with reference to the drawings.
FIG. 1 shows the bag body 1. The bag 1 contains foodstuffs and containers such as salt and seasonings such as roasted sesame. Liquids and powders are suitable as the inclusions. The contained matter is not limited to foods such as foods and seasonings, and may be other than that.

The bag body 1 includes an outer bag 2 and an inner cylinder 3 provided inside the outer bag 2. FIG. 1 shows an unfolded state in which the inner cylinder 3 is unfolded. The folded state in which the inner cylinder 3 is folded is shown in FIG. 5E.

As shown in FIG. 2, the outer bag 2 has a vertically long rectangular shape when viewed from the front. The outer bag 2 is made of a resin material such as polyethylene and has flexibility. However, the material of the outer bag 2 is not limited to the resin material as long as it is flexible and can be used as a bag.
The tip portion 2a of the outer bag 2 is open, and the bottom portion 2b and both side portions 2c and 2d are closed. That is, the outer bag 2 is a bottomed bag in which only the tip portion 2a is opened. The shape of the bottom portion 2b may be gusseted, or may be a downwardly convex arc shape when the outer bag 2 is viewed from the front as shown in FIG.

A chuck portion (fastener portion) 2e is provided at the tip portion 2a of the outer bag 2. The chuck portion 2e enables a closed state and an open state of the opened tip portion 2a. The chuck portion 2e extends along the width direction of the outer bag 2 (direction from one side portion 2c toward the other side portion 2d).

Specifically, as shown in FIGS. 3A and 3B, a convex portion 2e1 provided inside the outer bag 2 and a concave portion 2e2 facing the convex portion 2e1 are provided. In the present embodiment, the chuck portion 2e is provided with two pairs of convex portions 2e1 and concave portions 2e2 facing the convex portions 2e2 in parallel with each other. However, the present invention is not limited to this, and the combination of the convex portion 2e1 and the concave portion 2e2 facing the convex portion 2e1 may be one pair or three or more pairs.

By fitting the convex portion 2e1 in the concave portion 2e2, the closed state of the chuck portion 2e can be obtained as shown in FIG. 3B. An open state can be obtained by separating the convex portion 2e1 and the concave portion 2e2 as shown in FIG. 3A. Since the convex portion 2e1 and the concave portion 2e2 are made of, for example, an elastic resin material, the closed state and the open state can be alternately and repeatedly used.

As shown in FIG. 4, the inner cylinder 3 has a rectangular shape when viewed from the front. The inner cylinder 3 is made of a resin material such as polyethylene and has flexibility. However, the material of the inner cylinder 3 is not limited to this as long as it is flexible and can be used as a cylinder.
The tip end (open end) 3a and bottom (base end) 3b on the tip end side of the inner cylinder 3 are open, and both side portions 3c and 3d are closed. That is, the inner cylinder 3 has an open tip portion 3a and a bottom portion 3b.
The corner portions 3a1 located on both sides of the tip portion 3a of the inner cylinder 3 are set to 90 °. As a result, the inner cylinder 3 has a tubular shape having a constant width dimension.

The inner cylinder 3 can be sequentially folded from the tip portion 3a side. FIG. 4 schematically shows folding lines 3f and 3g. Actually, the folding lines 3f and 3g are not marked so as to be visible. However, for example, a linear printing portion (mark) may be provided so that the folding lines 3f and 3g can be visually recognized.

The first folding line 3f is shown as a folding line that appears when the corner portions 3a1 on both sides of the tip portion 3a of the inner cylinder 3 are folded so as to be located inside in the width direction of the inner cylinder 3. That is, the first folding line 3f is formed in a straight line diagonally provided from the tip portion 3a to the side portions 3c and 3d at a position inside from the corner portion 3a1.

The number of the second folding lines 3g is three in the example shown in FIG. However, the number of the second folding line 3g is not limited to this, and may be one, two, or four or more. The second folding line 3g has a linear shape provided in parallel with the tip portion 3a.

The bottom portion 3b of the inner cylinder 3 is fixed to the inner surface of the outer bag 2 as shown in FIG. Specifically, the bottom portion 3b of the inner cylinder 3 and the outer bag 2 are fixed by a heat seal or a first adhesive portion 5 with an adhesive. The first adhesive portion 5 is formed continuously and linearly in the width direction of the outer bag 2 and the inner cylinder 3. By sealing with the first adhesive portion 5 in this way, the contained material contained in the bag body 1 does not enter between the outside of the inner cylinder 3 and the inside of the outer bag 2. ..

As shown in FIGS. 1 and 2, the first adhesive portion 5 is provided at an intermediate position (more specifically, a central position) in the vertical direction (vertical direction in FIG. 1) of the outer bag 2. The first adhesive portion 5 is preferably provided at a position corresponding to the bottom portion 3b of the inner cylinder 3, but may be provided at a position offset to the tip portion 3a side of the inner cylinder 3.

The width direction (left-right direction in FIG. 1) of the inner cylinder 3 is smaller than the width direction of the outer bag 2.

A second adhesive portion (regulatory portion) 7 is provided on an extension of the side portions 3c and 3d of the inner cylinder 3. Each second adhesive portion 7 is provided linearly along the longitudinal direction (vertical direction) of the outer bag 2. The second adhesive portion 7 is formed by a heat seal or an adhesive. The inner distance W1 between the second adhesive portions 7 facing each other is the same as the width W2 of the inner cylinder 3. The second adhesive portion 7 fixes the inner surfaces of the outer bag 2 to each other. As a result, the internal space of the outer bag 2 is continuously connected to the space inside the inner cylinder 3.

<How to use>
Next, a method of using the above-mentioned bag body 1 will be described.
The state shown in FIG. 1 is a state in which the inner cylinder 3 is expanded, and is a state in which the bag body 1 is open. When taking out the contained material to the outside, as shown in FIG. 6, the tip portion 3a of the inner cylinder 3 is tilted downward. At this time, since the contained material passes through the inside of the inner cylinder 3 and is taken out to the outside, the contained material does not come into contact with the chuck portion 2e.

Next, a method of folding the inner cylinder 3 from the unfolded state shown in FIG. 1 into a folded state will be described.
First, the right corner portion 3a1 of the tip portion 3a of the inner cylinder 3 is grasped by hand, and as shown in FIG. 5A, the first folding line 3f on the right side is bent as a folding line. It should be noted that the left corner portion 3a1 may be folded first.
Next, in FIG. 5A, the left corner portion 3a1 is grasped by hand, and as shown in FIG. 5B, the first folding line 3f on the left side is bent as a polygonal line.
Then, in FIG. 5B, the tip portion 3a of the inner cylinder 3 is grasped by hand, and as shown in FIG. 5C, the second folding line 3g of the first step (upper step) from the top is bent as a folding line.
Then, in FIG. 5C, the upper end of the inner cylinder 3 is grasped by hand, and as shown in FIG. 5D, the second folding line 3g of the second step (middle step) from the top is bent as a folding line.
Finally, in FIG. 5D, the upper end of the inner cylinder 3 is grasped by hand, and as shown in FIG. 5E, the second folding line 3g of the third step (lower step) from the top is bent as a folding line.

The bag body 1 shown in FIG. 5E, which is a state in which the inner cylinder is folded as described above, shows a sealed state when the contained material is stored and held inside the bag body 1. At this time, the chuck portion 2e provided at the tip portion 2a of the outer bag 2 is in a closed state, and the tip portion 3a side of the inner cylinder 3 is folded and stored in the outer bag 2. Specifically, as shown in FIG. 3B, the convex portion 2e1 of the chuck portion 2e is fitted into the concave portion 2e2 facing the chuck portion 2e. Further, the tip portion 3a of the inner cylinder 3 is folded three times, whereby the inside of the inner cylinder 3 is sealed. When folding the tip portion 3a side of the inner cylinder 3, it is preferable to fold it after removing the air inside the outer bag 2 to the outside.

As shown in FIG. 7, a notch 3h may be provided in the inner cylinder 3 so that the inside and the outside of the inner cylinder 3 can communicate with each other. The notch 3h is a side portion 3c and / or 3d of the inner cylinder, and is provided so as to be located inside the outer bag 2. As a result, when the inner cylinder 3 is folded from the state shown in FIG. 1, the notch portion is involved and folded, so that the contents such as powdery material can be prevented from being discharged to the outside from the tip portion 3a. Specifically, when the inner cylinder 3 is folded, the tip portion 3a is closed so that the air inside is discharged from the notch 3h. As a result, the air flowing out from the notch 3h stays in the outer bag 2, so that it is possible to prevent the contents from being released to the outside of the bag body 1 as much as possible.
The notch 3h may be formed at the same time as the inner cylinder 3 is manufactured, or may be formed by the user with scissors or a toothpick after the manufacture.

When the inner cylinder 3 is folded as shown in FIG. 7, the inner cylinder 3 is located below the chuck portion 2e (on the bottom 2b side of the outer bag 2). As a result, the inner cylinder 3 does not prevent the chuck portion 2e from being closed.

<Manufacturing method>
The bag body 1 described above can be manufactured as follows.
First, as shown in FIG. 2, an outer bag 2 having a bag shape in which the side portions 2c and 2d and the bottom portion 2b are closed is prepared. The inner cylinder 3 having a cylindrical shape as shown in FIG. 4 is inserted from the bottom portion 3b side into the inside of the outer bag 2 from the tip portion 2a of the outer bag (insertion step).

A heat-resistant sheet (heat-resistant member) is inserted into the inner cylinder 3 so that the inner surfaces are not adhered to each other and are located at least at the bottom 3b. In addition, instead of the sheet-shaped heat-resistant sheet having flexibility, a plate-shaped heat-resistant plate having predetermined rigidity may be used. That is, as the heat-resistant member, any member may be used as long as it is a member that insulates the inner surfaces of the inner cylinders 3 so as not to be heat-sealed.
Then, the first adhesive portion 5 is formed so as to fix the bottom portion 3b of the inner cylinder 3 to the inner surface of the outer bag 2 by the heat seal (fixing step).

Next, the second adhesive portion 7 is formed by heat sealing so as to extend on the extension lines of the side portions 3c and 3d of the inner cylinder 3. The inner surfaces of the outer bag 2 are adhered to each other by the second adhesive portion 7. As a result, an internal space for accommodating the contents is formed in the outer bag 2 in the region sandwiched between the pair of second adhesive portions 7.

As shown in FIG. 7, the second adhesive portion 7 may be formed wide so as to reach the side portions 2c and 2d of the outer bag 2.

According to the manufacturing method described above, since the inner cylinder 3 is inserted into the bag-shaped outer bag 2 and the inner cylinder 3 is fixed by the heat seal, the outer bag before the bag shape, that is, The bag body 1 is easier than the manufacturing method in which the outer bag 2 is formed after fixing the inner cylinder 3 to one sheet developed without connecting the one side portions 2c and 2d and the bottom portion 2b. Can be manufactured.

<Transformation example: Folding of inner cylinder 3>
The folding method of the inner cylinder 3 shown in FIGS. 5A to 5E has been described as a method of folding the tip portion 3a of the inner cylinder 3 into a trapezoidal shape. However, the present invention is not limited to this, and as shown in FIGS. 8A to 8E, the inner cylinder 3 may be folded into a triangular shape so as to form an apex on the tip portion 3a side.

First, the right corner portion 3a1 of the tip portion 3a of the inner cylinder 3 of FIG. 8A is grasped by hand, and as shown in FIG. 8B, the first folding line 3f'on the right side is bent as a polygonal line. It should be noted that the left corner portion 3a1 may be folded first.

Next, in FIG. 8B, the left corner portion 3a1 is grasped by hand, and as shown in FIG. 8C, the first folding line 3f'on the left side is bent as a polygonal line.

Then, in FIG. 8C, the tip portion 3a of the inner cylinder 3 is grasped by hand, and as shown in FIG. 8D, the second folding line 3g'in the first step (upper step) from the top is bent as a folding line.

Finally, in FIG. 8D, the upper end of the inner cylinder 3 is grasped by hand, and as shown in FIG. 8E, the second folding line 3g'in the second step (lower step) from the top is bent as a folding line.

In the method shown in FIGS. 8A to 8E, the second folding line 3g'has two upper and lower lines. However, the number of the second folding lines 3g'may be one or three or more.

As shown by the broken line in FIG. 8A, the lower part of the first folding line 3f ”may be further inserted into the bottom portion 2b side of the outer bag 2 and folded. For example, the first folding line shown in FIG. 8A may be folded. "3f" has reached the first adhesive portion 5.

According to the method of using the bag body described above, the following effects are obtained.
As shown in FIGS. 5A to 5E and 8A to 8E, it was decided to bend the corner portion 3a1 of the tip portion 3a of the inner cylinder 3 inward before folding the tip portion 3a of the inner cylinder 3 by the folding step. .. By bending the corner portion 3a1 first, the width of the tip portion 3a side of the inner cylinder 3 can be narrowed, so that the tip portion 3a side of the inner cylinder 3 can be easily inserted inside the outer bag 2. , Workability is improved.

In particular, as shown in FIG. 1 and the like, in the case of a rectangular shape in which both corners 3a1 on the tip 3a side of the inner cylinder 3 are 90 °, the width of the tip 3a is relatively large, so that the corners are square. By first bending the portion 3a1, the width of the inner cylinder 3 can be narrowed, and the workability of the folding process can be improved.

The bottom 3b side of the inner cylinder 3 is fixed to the inner surface of the outer bag 2. A second adhesive that is connected at the same interval W1 (see FIG. 1) as the width W2 (see FIG. 1) on the bottom 3b side and extends toward the bottom 2b of the outer bag 2 to regulate the internal space of the outer bag 2. It was decided to provide a part 7. In this way, since the internal space of the outer bag 2 can be defined so that the connection portion with the width W2 on the bottom 3b side of the inner cylinder 3 does not change discontinuously by the second adhesive portion 7, it is accommodated in the internal space of the outer bag 2. It is possible to prevent the contents from staying in the vicinity of the connection portion with the inner cylinder 3 as much as possible.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the present embodiment, the shape of the bag body 1 is the same except that the shape of the tip portion 3a of the inner cylinder 3 is different from that of the first embodiment. Therefore, in the following, only the parts different from the first embodiment will be described, and the other parts are the same and will be omitted.

As shown in FIG. 9, the corner portions 3a1'on both sides of the tip portion 3a of the inner cylinder 3 have a trapezoidal shape larger than 90 °. Specifically, the angle of the corner portion 3a1'is set to 120 ° or more and 150 ° or less. The hypotenuse portion 3i is provided so as to extend diagonally downward with respect to the corner portion 3a1'. The hypotenuse portion 3i is closed, and only the tip portion 3a is an opening.

By forming the tip portion 3a side into a trapezoidal shape as in the present embodiment, it is possible to omit the step of bending the corner portion 3a1 as shown in FIGS. 5A to 5E of the first embodiment.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. This embodiment is applicable to the bag body 1 shown in the first embodiment and the second embodiment.
As shown in FIG. 10, the tab portion 10 is attached to the side portion side of the bottom portion 2b of the outer bag 2. The tab portion 10 is provided via a cutout portion 10a that can be cut off from the outer bag 2. The cut portion 10a is provided with, for example, perforations so that it can be easily cut. A through hole 10b is formed in the center of the tab portion.

As shown in FIG. 11, in a state where a plurality of bag bodies 1 are overlapped with each other, the bag body 1 is placed at a desired position by locking the bag body 1 through the hook 12 through the through hole 10b of the tab portion 10. Can be put on standby. Further, since the tab portion 10 is connected to the outer bag 2 via the cut portion 10a, when the bag body 1 is used, only one outer bag 2 is pulled and separated from the tab portion 10 to form a bag body. 1 can be used.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described. This embodiment differs from the first embodiment in that the inner cylinder 3 is not fixed to the outer bag. In the following description, the same reference numerals will be given to the configurations common to the first embodiment, and the description thereof will be omitted.

A pair of third adhesive portions 14 with respect to the outer bag 2 are formed over the longitudinal direction of the outer bag. Each third adhesive portion 14 is formed of a heat seal or an adhesive, and adheres the inner surfaces of the outer bag 2 to each other.

The inner cylinder 3 is inserted into the internal space sandwiched between the pair of third adhesive portions 14. The inner cylinder 3 has the same outer shape as the inner cylinder 3 shown in FIG. That is, the tip portion 3a and the bottom portion 3b of the inner cylinder 3 are openings. However, the tip portion 3a of the inner cylinder 3 is not folded back at the corner portion, but is only folded back in parallel with the tip portion 3a.

The state shown in FIG. 12 is a stored state in which the inner cylinder 3 is positioned so as to be located on the bottom 2b side of the chuck portion 2e so that the chuck portion 2e can close the state.

As shown by the arrow A1 in FIG. 13, the inner cylinder 3 is slidable with respect to the outer bag 2 in the longitudinal direction of the outer bag 2 (longitudinal direction of the third adhesive portion 14). When taking out the contents in the bag 1, the inner cylinder 3 is slid from the stored state of FIG. 13 to the tip portion 2a side of the outer bag 2, and the inner cylinder 3 is on the tip portion 3a side of the inner cylinder 3 as shown in FIG. Is expanded to open the inner cylinder 3. At this time, since the inner cylinder 3 exists inside the chuck portion 2e, the contained object does not come into contact with the chuck portion 2e, so that the contained object is prevented from adhering to the chuck portion 2e as much as possible. can do.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described. In this embodiment, the shape of the second adhesive portion 7 (see, for example, FIG. 1) is different from that of the first embodiment. Others are the same, so the description will be omitted.
As shown in FIG. 15, the second adhesive portion 7 is connected to the slanted portion 7a extending to the outside of the outer bag 2 from the position connected to the widthwise end portion of the inner cylinder 3 and the slanted portion 7a. It has a straight portion 7b extending along the side portions 2c and 2d of the outer bag 2.
Even with the second adhesive portion 7 having such a shape, it is possible to prevent the contents from staying in the vicinity of the connection position with the inner cylinder 3. Further, the capacity of the contents that can be accommodated in the outer bag 2 can be made larger than that of the outer bag 2 shown in FIG.

[Sixth Embodiment]
Next, the sixth embodiment of the present invention will be described. In this embodiment, the method of fixing the inner cylinder 3 is different from that of the first embodiment. Other similar configurations are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 16, the bottom portion 3b of the inner cylinder 3 is located at the bottom portion 2b of the outer bag 2. That is, the bottom 3b of the inner cylinder 3 and the bottom 2b of the outer bag 2 have the same height. Both side portions 3c and 3d of the inner cylinder 3 are adhered to the inside of the outer bag 2 by the second adhesive portion 7.

The bottom 3b of the inner cylinder 3 is airtightly or liquid-tightly closed to the outer bag 2. Specifically, the second adhesive portion 7 adheres both side portions 3c and 3d of the inner cylinder 3 and at the same time closes the bottom portion.
Alternatively, the bottom 3b of the inner cylinder 3 may be closed by fixing the bottom 3b of the inner cylinder 3 and the bottom 2b of the outer bag 2 to each other with a heat seal or an adhesive.
Alternatively, after the bottom 3b is a closed bottomed inner cylinder 3, the inner cylinder 3 is inserted into the outer bag 2 and then the inner cylinder 3 is fixed to the outer bag 2 by the second adhesive portion 7. You can do it.

According to the present embodiment, since the bottom portion 3b of the inner cylinder 3 and the bottom portion 2b of the outer bag 2 are matched with each other, the positioning of the inner cylinder 3 with respect to the outer bag 2 becomes easy at the time of manufacturing the bag body 1. Further, the first adhesive portion 5 (see FIG. 1) of the first embodiment can be omitted, and the manufacturing process can be simplified.

[7th Embodiment]
Next, a seventh embodiment of the present invention will be described. This embodiment differs from the sixth embodiment in that two inner cylinders 3 are provided. Other similar configurations are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 17 and 18, the inner cylinder 3 is provided in a state of being overlapped with each other. The two inner cylinders 3 are adhered to the outer bag 2 in a state of being overlapped by the second adhesive portion 7.

As shown in FIG. 19, in order to fold the tip portion 3a of the inner cylinder 3 into a stored state, each inner cylinder 3 is folded. Alternatively, as shown in FIG. 20, the tip portion 3a of the inner cylinders 3 in the stacked state may be folded.

By stacking two inner cylinders 3 as in the present embodiment, different types of contents can be stored separately in each inner cylinder 3.
The number of inner cylinders 3 to be stacked may be 3 or more.
Further, this embodiment can be applied not only to the sixth embodiment but also to the inner cylinder 3 of each of the above-described embodiments.

[Eighth Embodiment]
Next, an eighth embodiment of the present invention will be described. The present embodiment differs from the sixth embodiment in that the internal region of the inner cylinder 3 is divided. Other similar configurations are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 21, the inner cylinder 3 has a dividing line 8 that divides the internal region into two. The dividing line 8 is provided linearly in the longitudinal direction from the tip portion 3a to the bottom portion 3b of the inner cylinder 3. The dividing line 8 is formed by a heat seal or an adhesive so as to fix the inner surfaces of the inner cylinders 3 to each other in an airtight or liquidtight manner. The dividing line 8 forms an internal region independent on the left and right in the inner cylinder 3.

According to the present embodiment, since the dividing line 8 for dividing the inner cylinder 3 into the left and right two internal regions is provided, different types of contents can be separately stored in the left and right internal regions.
In addition, a plurality of dividing lines 8 may be provided in parallel, and the number of internal regions may be 3 or more.
Further, this embodiment can be applied not only to the sixth embodiment but also to the inner cylinder 3 of each of the above-described embodiments.

In each of the above-described embodiments, the chuck portion 2e having the convex portion 2e1 and the concave portion 2e2 has been described. It may be provided.
Although the chuck portion 2e having the convex portion 2e1 and the concave portion 2e2 has been described, the form of the fastener portion is not limited to the chuck type as long as it can close the opening of the outer bag 2.

1 Bag body 2 Outer bag 2a Tip part 2b Bottom part 2c Side part 2d Side part 2e Chuck part (fastener part)
3 Inner cylinder 3a Tip (open end)
3a1 corner 3b bottom (base end)
3c Side 3d Side 3f, 3f'First folding line 3g, 3g' Second folding line 3h Notch 5 First adhesive part 7 Second adhesive part (regulatory part)
7a Oblique part 7b Straight part 8 Division line 10 Tab part 10a Cut part 12 Hook 14 Third adhesive part W1 Spacing W2 (of inner cylinder) Width

Claims (11)

A bag-shaped outer bag having a closed bottom, an open tip, and a fastener that allows the tip to be closed and open.
An inner cylinder provided inside the outer bag and having a base end side fixed to the inner surface of the outer bag.
Equipped with
The inner cylinder is folded so as to be located on the bottom side of the fastener portion so that the closed state can be achieved by the fastener portion, and the inner cylinder is expanded from the folded state. In a method of using a bag having an open end extending beyond the fastener portion and extending toward the tip portion side.
A corner bending step of bending each corner of the inner cylinder on both sides of the open end inward in the unfolded state,
The folding step of folding the opening end with the corner bent to bring it into the folded state,
After the folded state, the tip closing step of closing the tip by the fastener portion and the closing step of the tip.
How to use the bag body with. The method of using the bag body according to claim 1, wherein the inner cylinder has a rectangular shape in which the corners on both sides are 90 ° in the unfolded state. A bag-shaped outer bag having a closed bottom, an open tip, and a fastener that allows the tip to be closed and open.
An inner cylinder provided inside the outer bag and having a base end side fixed to the inner surface of the outer bag.
Equipped with
The inner cylinder is folded so as to be located on the bottom side of the fastener portion so that the closed state can be achieved by the fastener portion, and the inner cylinder is expanded from the folded state. In a method for manufacturing a bag having an open end extending beyond the fastener portion and extending toward the tip portion side.
An insertion step of inserting the inner cylinder into the inside of the outer bag from the tip end side of the bag-shaped outer bag, and
A fixing step of fixing the base end side to the outer bag by adhesive with the heat-resistant member inserted in the inner cylinder.
A method of manufacturing a bag body having. A bag-shaped outer bag having a closed bottom, an open tip, and a fastener that allows the tip to be closed and open.
An inner cylinder provided inside the outer bag and having a base end side fixed to the inner surface of the outer bag.
Equipped with
The inner cylinder is folded so as to be located on the bottom side of the fastener portion so that the closed state can be achieved by the fastener portion, and the inner cylinder is expanded from the folded state. In a bag having an open end extending beyond the fastener portion toward the tip portion side.
The outer bag is connected with the same width as the base end side of the inner cylinder, and has a regulating portion extending toward the bottom of the outer bag to regulate the internal space of the outer bag. .. 4. Claim 4 that the inner cylinder has a rectangular shape in which the corners on both sides of the open end are 90 ° in the unfolded state, or a trapezoidal shape in which the corners on both sides are larger than 90 °. The bag body described in. A bag-shaped outer bag having a closed bottom, an open tip, and a fastener that allows the tip to be closed and open.
An inner cylinder arranged in the outer bag so that the base end side is located inside the outer bag, and
Equipped with
The inner cylinder is formed by folding the open end side of the inner cylinder so as to be located on the bottom side of the fastener portion so that the closed state can be achieved by the fastener portion, and then the entire inner cylinder is folded. When the entire inner cylinder is relatively moved with respect to the outer bag and the open end is expanded from the stored state to the tip end side of the outer bag. A bag body having a developed state in which the open end is positioned beyond the fastener portion. A bag-shaped outer bag having a closed bottom, an open tip, and a fastener that allows the tip to be closed and open.
An inner cylinder provided inside the outer bag and fixed so that the bottom is located at the bottom of the outer bag.
Equipped with
The inner cylinder is folded so as to be located on the bottom side of the fastener portion so that the closed state can be achieved by the fastener portion, and the inner cylinder is expanded from the folded state. It has a developed state in which the end of the opening extends beyond the fastener portion toward the tip portion .
A bag body in which both side portions of the inner cylinder are spaced apart from the side portions of the corresponding outer bag and are fixed to the inside of the outer bag. The bag according to any one of claims 4 to 7, wherein the inner cylinder is provided by stacking a plurality of the inner cylinders. The bag according to any one of claims 4 to 8, wherein the inner cylinder has a dividing line that divides an internal area into a plurality of parts. The invention according to any one of claims 4 to 9, wherein the inner cylinder is formed with a notch communicating the inside and the outside of the inner cylinder in a region located inside the outer bag in the unfolded state. Bag body. The bag according to any one of claims 4 to 10, which is provided through a cutout portion that can be cut out from the outer bag and includes a tab portion having a through hole formed therein.

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