JP7025393B2 - Compression bag - Google Patents

Description

The present invention relates to a compression bag capable of compressing and storing a stored object by exhausting the stored object such as clothes or a futon in a stored state.

Conventionally, it is a bag for storing items to be stored that become bulky due to the inclusion of air such as clothes and futons. By exhausting the air inside the bag, the items to be stored are compressed at atmospheric pressure. There are compression bags that can be stored compactly.

The compression bag includes a check valve having a valve and a check valve having a gap-shaped flow path in which a plurality of sheets, for example, two films are stacked (see Patent Document 1).

A compression bag that uses a check valve that stacks multiple sheets of film and has a gap-like flow path does not require a device for air suction such as a vacuum cleaner, and can be exhausted only by human power. For example, in a single-person household or a travel destination that does not have a canister-type vacuum cleaner, there is an advantage that the stored items can be easily compressed and stored.

Jitsufuku No. 6-697 Gazette

However, a compression bag that uses a check valve that stacks multiple films and has a gap-like flow path utilizes the high air resistance value in the narrow gap-like flow path between the multiple films. It prevents the outside air from flowing into the inside of the compression bag, and can maintain the compressed state of the items to be stored in the compression bag for a short period of time, for example, several days. There is a problem that the outer air gradually flows into the inside of the compression bag from the check valve having a gap-like flow path, and the compressed state cannot be maintained for a long period of time, for example, 6 months.

Therefore, an object of the present invention is to provide a compressed bag that can be exhausted only by human power and can maintain a compressed state of an object to be stored for a long period of time.

The compressed bag according to the present invention is provided with a bag body capable of storing an object to be stored inside and a bag body near the first edge of the bag body, and the bag body can be opened / sealed and the bag is opened at the time of opening. A first chuck portion that allows the items to be stored in and out of the body and a second chuck portion of the bag body are provided near the second edge, and the air inside the bag body is exhausted to the outside of the bag body and the outside of the bag body. A check valve portion that prevents the air from flowing inward, and a check valve portion that is provided near the second end edge of the bag body and is provided on the outer side of the bag body on the exhaust side of the air from the check valve portion. It is composed of a second chuck portion capable of opening / sealing the body.

According to the compression bag according to the present invention, a bag body capable of storing an object to be stored inside and a bag body provided near the first edge of the bag body can be opened / sealed and opened. Since it has a first chuck portion that can sometimes put the items to be stored in and out of the bag body, it is possible to put the items to be stored from the first edge side and store the items to be stored inside the bag body. At the same time, by sealing the first chuck portion, the first end edge side of the bag body is sealed, and air does not flow into the inside of the bag body from further outside of the first end edge side of the bag body. ..

The compression bag according to the present invention is provided near the second edge of the bag body, and the air inside the bag body is exhausted to the outside of the bag body and the air outside the bag body flows inward. Since it has a check valve part that prevents the bag from being stored, pressure is applied to the bag body by human power while the items to be stored are stored inside the bag body, and the air inside the bag body is blown from the check valve part. It can be exhausted to the outside of the body. At this time, the check valve portion prevents the air on the outside of the bag from flowing inward.

Further, the compression bag according to the present invention is provided near the second end edge of the bag body and outside the check valve portion on the air exhaust side of the bag body, and the bag body is opened / sealed. Since it has a second chuck portion that can be used, the second end edge side of the bag body is sealed by sealing the second chuck portion in addition to the function of preventing the inflow of air by the check valve portion. Air does not flow into the inside of the bag from further outside on the edge side of 2.

The compression bag according to the present invention is further configured as follows. That is, the check valve portion is a portion formed by welding a plurality of bag body forming films partially along the second edge, and welding the plurality of bag body forming films. At the same time, the welded portion, which is a portion that prevents the stored object from moving to the second chuck portion side, and the air exhausted from the inside of the bag body to the outside of the bag body are between the plurality of bag body forming films and the welded portion. The exhaust flow path that passes substantially along the second edge between the two, and the portion where the plurality of bag body forming films are not welded, the exhaust flow path is opened toward the inside of the bag body and exhausted from the bag body. The inner air port for the air to flow into the exhaust flow path and the air exhausted from the bag body by opening the exhaust flow path toward the outside of the bag body, which is a part where a plurality of bag body forming films are not welded. Is composed of an outer air port for flowing out from the exhaust flow path to the outside of the bag body, and the inner air port and the outer air port are the second end in the plane direction in which a plurality of bag body forming films extend. In the direction orthogonal to the edge, the position does not overlap or the position overlaps.

According to the compression bag according to the present invention , the air exhausted from the inside of the bag body to the outside of the bag body passes substantially along the second edge between the plurality of bag body forming films and between the welded portions. The check valve portion having a flow path functions as a check valve because a high pressure is applied to the narrow gap-shaped flow path.

Further, an exhaust flow path that passes substantially along the second edge is opened toward the inside of the bag body, and an inner air port for the air exhausted from the bag body to flow into the exhaust flow path and the outside of the bag body. The outer air port for opening the exhaust flow path toward the outside of the bag body and allowing the air exhausted from the bag body to flow out from the exhaust flow path to the outside of the bag body is the second of the plane directions in which the plurality of bag body forming films extend. Since the positions do not overlap when viewed from the direction orthogonal to the edge of the bag, the positions do not penetrate in the direction orthogonal to the second edge in the plane direction in which the plurality of bag-forming films are stretched. , For example, there is a positional relationship between one shaft and the other shaft of the crank via an exhaust flow path that passes substantially along the second end edge. As a result, the air outside the bag that tries to enter from the outer air port through the exhaust flow path to the inner air port bends at a substantially right angle when entering the exhaust flow path from the outer air port and exhaust. It will pass through a flow path that bends at a substantially right angle when entering the inner air port from the flow path. And, in the curved flow path, it becomes difficult for air to travel.

Therefore, according to the compression bag according to the present invention , the pressure in the exhaust flow path can be further increased, and the compressed state can be maintained for a longer period of time.

The compression bag according to the present invention is further configured as follows. That is, the welded portion has a protruding portion that protrudes inward in the exhaust flow path and a bent portion that bends inward in the exhaust flow path.

According to the compression bag according to the present invention , the air outside the bag body that tries to enter from the outer air port through the exhaust flow path to the inner air port is inside the exhaust flow path formed between the welded portions. The progress is hindered by the protruding portion protruding in the direction, and it becomes difficult to proceed in the exhaust flow path. Similarly, according to the compression bag according to claim 3, the air outside the bag body that tries to enter from the outer air port through the exhaust flow path to the inner air port is exhaust formed between the welded portions. The inwardly bent portion of the flow path hinders the progress, making it difficult to proceed in the exhaust flow path.

Therefore, according to the compression bag according to the present invention , the pressure in the exhaust flow path can be further increased, and the compressed state can be maintained for a longer period of time.

The compressed bag according to claim 1 is composed of a bag body capable of storing an object to be stored inside, and the bag body has a substantially rectangular shape and has a first end edge and a first end edge. A parallel second edge, a third edge connecting the left edge of the first edge and the left edge of the second edge, and the right edge of the first edge and the right edge of the second edge. A bag body forming film having substantially the same planar shape is laminated with a fourth end edge connecting the three ends, and the third end edge and the fourth end edge are connected to each other, and the opposite bag body is formed. A storage unit for storing the items to be stored is provided between the facing surfaces of the formed film.
A first chuck portion provided in the vicinity of the first end edge of the bag body, which can open / seal the bag body and can put in and take out items to be stored in the bag body at the time of opening, and the bag body. A check valve provided near the second end edge of the bag body to exhaust the air in the storage portion inside the bag body to the outside of the bag body and prevent the air outside the bag body from flowing into the inner storage portion. Department and
A second chuck portion provided near the second end edge of the bag body and on the outside of the check valve portion on the air exhaust side of the bag body and capable of opening / sealing the bag body. include.

According to the compression bag according to the present invention, a bag body capable of storing an object to be stored inside and a bag body provided near the first edge of the bag body can be opened / sealed and opened. Since it has a first chuck portion that can sometimes put the items to be stored in and out of the bag body, it is possible to put the items to be stored from the first edge side and store the items to be stored inside the bag body. At the same time, by sealing the first chuck portion, the first end edge side of the bag body is sealed, and air does not flow into the inside of the bag body from further outside of the first end edge side of the bag body. ..

The compression bag according to the present invention is provided near the second edge of the bag body, and the air inside the bag body is exhausted to the outside of the bag body and the air outside the bag body flows inward. Since it has a check valve part that prevents the bag from being stored, pressure is applied to the bag body by human power while the items to be stored are stored inside the bag body, and the air inside the bag body is blown from the check valve part. It can be exhausted to the outside of the body. At this time, the check valve portion prevents the air on the outside of the bag from flowing inward.

Further, the compression bag according to the present invention is provided near the second end edge of the bag body and outside the check valve portion on the air exhaust side of the bag body, and the bag body is opened / sealed. Since it has a second chuck portion that can be used, the second end edge side of the bag body is sealed by sealing the second chuck portion in addition to the function of preventing the inflow of air by the check valve portion. Air does not flow into the inside of the bag from further outside on the edge side of 2.

The compression bag according to claim 2 is further configured as follows. That is, the check valve portion is a portion formed by partially welding a plurality of bag-forming films substantially along the second edge, and the plurality of bag-forming films are welded. At the same time, the welded portion, which is a portion that prevents the stored object from moving to the second chuck portion side, and the air exhausted from the inside of the bag body to the outside of the bag body are between the plurality of bag body forming films and the welded portion. The exhaust flow path that passes substantially along the second edge between the bags and the portion where the plurality of bag body forming films are not welded, the exhaust flow path is opened toward the inside of the bag body and exhausted from the bag body. The inner air port for the air to flow into the exhaust flow path and the air exhausted from the bag body by opening the exhaust flow path toward the outside of the bag body, which is a portion where a plurality of bag body forming films are not welded. Is composed of an outer air port for flowing out from the exhaust flow path to the outside of the bag body.
The welded portion has a first row of welded portions formed on the storage portion side away from the second edge, and a second row of welded portions formed in the vicinity of the second chuck portion. The first row of the welded portion, the second row of the welded portion, and the second chuck portion are formed substantially parallel to the second edge, and the first row of the welded portion is formed discontinuously and is continuous. An inner air vent is formed in a non-continuous region, the second row of welded portions is formed discontinuously, and an outer air vent is formed in a discontinuous region.

The compressed bag according to claim 3 is further configured as follows. That is, the check valve portion is provided with a width between the check valve boundary portion extending in the width direction connecting the welded portions constituting the first row of welded portions and the first row of the welded portions. It is composed of a check valve boundary portion extending in the width direction connecting the welded portions forming two rows and a region surrounded by the left and right edge edges of the bag body, and is welded to the welded portion in the first row of the welded portions. With the bag body forming film formed between the closed region where the welded part in the second row of the portion faces and the welded portion in the first row of the welded portion and the welded portion in the second row of the welded portion, which constitutes the bag body on the front side. It is provided with an adhesion region in which the bag body forming film constituting the bag body on the back side is in close contact with the film.

The compression bag according to claim 4 has a welded portion having a protruding portion protruding inward in the exhaust flow path and a bent portion bent inward in the exhaust flow path, and the first row of the welded portions has a welded portion. It has a long linear first welded portion and a short linear or dotted second welded portion, and the first row of welded portions is a protruding portion and an exhaust flow path that project inward from the exhaust flow path. The second row of welded portions has a long linear first welded portion and a short linear or dotted second welded portion, and has a bent portion that bends inward, and the welded portion first. The two rows have protrusions that project inward in the exhaust flow path.

The compression bag according to claim 5 has a check valve in which the length of the inner air port in the width direction of the check valve portion is longer than the length of the linear long first welded portion in the width direction of the check valve portion. The length of the outer air port in the width direction of the portion is longer than the length of the long linear first welded portion in the width direction of the check valve portion.
The long linear first welded portion in the first row of the welded portion faces the long linear first welded portion in the second row of the welded portion, and the linear long welded portion in the width direction of the check valve portion is linear. The length of the long first welded portion is longer than the length of the linear long first welded portion in the second row of welded portions.

In the compression bag according to the present invention , the bag body forming film constituting the bag body is formed of a heat-welable film having a laminated structure of nylon and low-density polyethylene and having flexibility, and the bag body is formed. A storage portion is formed with the low-density polyethylene inside, and the region of the check valve portion of the bag body is a region other than the welded portion, in which the low-density polyethylene of the bag body forming film on the front side and the bag body forming film on the back side are formed. It is configured so that it is in close contact with the low density polyethylene while maintaining smoothness.

In the compression bag according to claim 6 , the first row of the welded portion constitutes a stop position of the stored object housed in the storage portion, and inner air ports are formed on the left end edge side and the right end edge side of the bag body. In the second row of welded parts, outer air vents are formed on the left end edge side and the right end edge side of the bag body.
The inner air port and the outer air port formed on the left end edge side and the right end edge side of the bag body do not overlap each other in the direction orthogonal to the second end edge in the plane direction in which the plurality of bag body forming films extend. It is a position, and is a parallel position at a position parallel to the second edge in the plane direction in which the plurality of bag-forming films are stretched.

Therefore, according to the compression bag according to the present invention, the air can be exhausted only by human power, and the compressed state of the stored object can be maintained for a long period of time.

It is a top view which shows the compression bag which concerns on 1st Embodiment of this invention. It is an enlarged plan view which shows the flow of the exhaust around the check valve part of the compression bag which concerns on 1st Embodiment of this invention. It is an enlarged cross-sectional perspective view centering on the check valve portion of the compression bag which concerns on 1st Embodiment of this invention. It is a top view which shows the modification of the compression bag which concerns on 1st Embodiment of this invention. (A) is a cross-sectional view taken along the line AA of FIG. (B) is a cross-sectional view taken along the line BB of FIG. (C) is a sectional view taken along the line CC of FIG. It is a top view which shows the compression bag which concerns on 2nd Embodiment of this invention. It is an enlarged plan view which mainly shows the check valve part of the compression bag which concerns on 2nd Embodiment of this invention. It is an enlarged cross-sectional perspective view which shows the check valve part of the compression bag which concerns on 2nd Embodiment of this invention as a center. It is a perspective illustration which shows the state which the futon is stored in the storage part of the compression bag which concerns on the 2nd Embodiment of this invention. FIG. 9 is a sectional view taken along the line DD of FIG. 9 is a cross-sectional view taken along the line EE of FIG. It is the bottom illustration in the state which the 2nd chuck part of the compression bag which concerns on 2nd Embodiment of this invention is open. It is a plan view which shows the modification of the compression bag which concerns on 2nd Embodiment of this invention, (a) is the figure which shows the whole, (b) (c) (d) is the figure which enlarged part. Is. It is an enlarged plan view which shows the check valve part of the modification of the compression bag which concerns on 2nd Embodiment of this invention as a center. It is a perspective illustration which shows the method of compressing and maintaining in the exhaust state in the state which the contents to be stored are stored in the compression bag which concerns on this invention.

Hereinafter, the compression bag 10 according to the first embodiment of the present invention will be described with reference to the attached drawings.

Here, in the present specification, the direction with respect to the compression bag 10 is defined as follows according to FIG. The inside of the compression bag 10 is referred to as "inside", and the outside of the compression bag 10 is referred to as "outside". The upper side of FIG. 1 is referred to as "upper side", the lower side of FIG. 1 is referred to as "lower side", the left side of FIG. 1 is referred to as "left side", and the right side of FIG. 1 is referred to as "right side". Further, the direction orthogonal to the paper surface of FIG. 1 is defined as the "height direction or the front-back direction". The lower side of the compression bag 10 in FIG. 1 below the lower end edge is referred to as the “exhaust side”. Further, the "vertical direction" corresponds to the direction in which the object to be stored is stored in the compression bag 10 and the compression bag 10 is rolled and folded in order to exhaust the air inside.

As shown in FIG. 1, the compression bag 10 is a storage bag capable of compressing and storing a stored object (not shown) by evacuating the stored object (not shown) such as clothes or a futon. The compression bag 10 is composed of a bag body 20, a first chuck portion 30, a check valve portion 40, and a second chuck portion 50.

The bag body 20 is a bag body that forms the main body of the compression bag 10, and is a bag body that can store an object to be stored inside. The bag body 20 has flexibility for storing an object to be stored in the inner storage portion. Further, the bag body 20 is made of a material that does not allow air to pass through. The bag body 20 is formed in a tubular shape by connecting bag body forming films having the same shape in the front and rear at the left edge and the right edge. In this embodiment, the first heat-weldable film 2a and the second heat-weldable film 2b, which are two heat-weldable films having the same shape, overlap each other in the height direction, and the left end edge and the right end edge are overlapped with each other. It is formed so as to have a welded laminated structure in.
Then, in the bag body 20, the edges of the first heat-weldable film 2a and the second heat-weldable film 2b are welded or the first chuck portion 30 and the second chuck portion 50 described later are used. By sealing, the inner air and the outer air can be shielded. The bag body 20 has a first edge 21 which is an upper linear edge, a second edge 22 which is a lower linear edge, and a third end which is a left linear edge. It has a peripheral edge including an edge 23 and a fourth edge 24 which is a linear edge on the right side. The first edge 21 is an edge that serves as an entrance / exit when the stored object is taken in and out of the compression bag 10, that is, the bag body 20. The second edge 22 is an edge facing the first edge 21, and is an edge for exhaust when the air inside the compression bag 10, that is, the bag body 20 is exhausted to the outside. This is the edge on which the check valve portion 40 is provided. That is, the second edge 22 is an edge located downstream in the direction of exhausting the air, which is the folding direction, when viewed from the air inside the bag body 20. The third edge 23 is an edge connecting one side end of the first edge 21 and one side end of the second edge 22, and is an edge that is welded and sealed. be. The fourth edge 24 is an edge facing the third edge 23, and is an end connecting the other end of the first edge 21 and the other end of the second edge 22. It is an edge, which is an edge that is welded and sealed. The third edge 23 and the fourth edge 24 have a width welded so as to have an adhesive strength that does not peel off even when the stored object is stored. If the bag body 20 is for clothing, the length in the vertical direction from the first edge 21 to the second edge 22 is, for example, 40 cm to 70 cm, and the third edge 23 to the fourth end. The length in the left-right direction to the edge 24 is, for example, 30 cm to 50 cm.
If the bag body 20 is for a futon, the length in the vertical direction from the first edge 21 to the second edge 22 is, for example, 100 cm to 130 cm, and the third edge 23 to the fourth end. The length in the left-right direction to the edge 24 is, for example, 70 cm to 90 cm. That is, in the bag body 20, the ratio of the length in the left-right direction to the length in the up-down direction is about 3: 4 to 5: 7 for clothing, and 7:10 to 9:13 for futon. Is the degree of.

The first chuck portion 30 is composed of two rows of ridges that are vertically arranged in parallel and two rows of ridges that face the two rows of ridges in the height direction and occlude the ridges. The first chuck portion 30 is provided in the vicinity of the first edge 21 of the bag body 20 so as to extend along the first edge 21. The first chuck portion 30 can seal the first end edge 21 side of the bag body 20 by engaging the two rows of protrusions and the two rows of recesses. Further, the first chuck portion 30 can open the first end edge 21 side of the bag body 20 by separating the two rows of ridges and the two rows of recesses in the occlusal state. Further, the first chuck portion 30 is formed in a size and shape that allows the stored object to be taken in and out of the bag body 20 at the time of opening.

The check valve portion 40 exhausts the air inside the bag body 20 whose pressure has been increased by human power to the outside of the bag body 20 and prevents the air outside the bag body 20 from flowing inward. It is the part that functions as a valve. The check valve portion 40 is mainly formed by a linear welded portion. The check valve portion 40 has a width that allows the air flow to be changed, and has an adhesive strength that prevents the welded portion from peeling off. The check valve portion 40 is provided in the vicinity of the second edge 22 of the bag body 20 so as to extend from the third edge 23 to the fourth edge 24 along the second edge 22. In the check valve portion 40, the first heat-weldable film 2a and the second heat-weldable film 2b overlapping in the height direction (front-back direction) are partially welded substantially along the second edge 22. It is formed by that. The vertical length of the check valve portion 40 is preferably 5 cm or more and 10 cm or less. Further, the ratio of the vertical length of the check valve portion 40 to the vertical length from the upper end edge of the check valve portion 40 to the first end edge 21 of the bag body 20 is for clothing. It is preferably from 1: 8 to 1:12, and preferably from 1:14 to 1:19 for futons.

The check valve portion 40 has a welded portion 42, which is a portion where the first heat-weldable film 2a and the second heat-weldable film 2b are welded, and the inside of the bag body 20 to the outside of the bag body 20. An exhaust flow path 44 through which the exhaust air passes substantially along the second edge 22 between the first heat-weldable film 2a and the second heat-weldable film 2b and between the welded portions 42, and the first. This is a portion where the heat-weldable film 2a and the second heat-weldable film 2b are not welded, and the exhaust flow path 44 is opened toward the inside of the bag body 20 to allow the air exhausted from the bag body 20 to flow out. The inner air port 46 for flowing into 44, the portion where the first heat-weldable film 2a and the second heat-weldable film 2b are not welded, and the exhaust flow path 44 toward the outside of the bag body 20. Is provided with an outer air port 48 for allowing the air exhausted from the bag body 20 to flow out from the exhaust flow path 44 to the outside of the bag body 20.

In the welded portion 42, the first heat-weldable film 2a and the second heat-weldable film 2b are welded in the vicinity of the second edge 22 of the bag body 20 so as to substantially follow the second edge 22. Is formed. Further, the welded portion 42 is formed substantially along the second edge 22 so as to be substantially parallel to each other in two rows, and is composed of a first row of welded portions 42a and a second row of welded portions 42b. The first row 42a of the welded portion and the second row 42b of the welded portion are substantially opposed to each other. The first row 42a of the welded portion is arranged inside the bag body 20 with respect to the second row 42b of the welded portion. The first row 42a of the welded portion prevents the object to be stored from moving toward the second chuck portion 50 side.

As shown in FIG. 2, the welded portion first row 42a is welded to the welded portion first row first portion 42a1, the welded portion first row second portion 42a2, and the welded portion first row third portion 42a3 in order from the left. Part 1 is provided with a first row, fourth part 42a4. The second row 42b of the welded portion includes, in order from the left, the first portion 42b1 of the second row of the welded portion, the second row 42b2 of the second row of the welded portion, and the third portion 42b3 of the second row of the welded portion. The left end portion of the first row, first portion 42a1 of the welded portion is connected to the welded portion of the third edge 23. Similarly, the right end portion of the first row, fourth portion 42a4 of the welded portion is connected to the welded portion of the fourth edge 24. On the other hand, the left end portion of the first portion 42b1 of the second row of the welded portion is not connected to the welded portion of the third end edge 23. Similarly, the right end of the second row, third part 42b3 of the welded portion is not connected to the welded portion of the fourth edge 24.

The welded portion 42, that is, the first row 42a of the welded portion and the second row 42b of the welded portion form a substantially cylindrical gap between them. Then, in the gap, the air exhausted from the inside of the bag body 20 to the outside of the bag body 20 is formed between the first heat-weldable film 2a and the second heat-weldable film 2b and between the welded portions 42. An exhaust flow path 44 that passes substantially along the edge 22 of 2 is formed.

As shown in FIGS. 1 and 2, the welded portion first row 42a includes the welded portion first row first portion 42a1 and the welded portion first row second portion 42a2 and the welded portion along the second edge 22. The first row, third part 42a3 and the welded part, first row, fourth part 42a4 are formed so as to be discontinuous, that is, intermittently partially welded in a straight line. That is, as shown in FIG. 2, a portion between the welded portion 1st row 1st portion 42a1 and the welded portion 1st row 2nd portion 42a2, which is a discontinuous portion of the welded portion 1st row 42a, is welded. The portion between the second part 42a2 of the first row and the third part 42a3 of the first row of the welded portion, and the portion between the third part 42a3 of the first row of the welded portion and the fourth part 42a4 of the first row of the welded portion. Is a portion where the first heat-weldable film 2a and the second heat-weldable film 2b are not welded, and the exhaust flow path 44 is opened toward the inside of the bag body 20 to exhaust from the bag body 20. It forms an inner air port 46 for the air to flow into the exhaust flow path 44. In the compression bag 10, one inner air port 46 may be formed, or a plurality of inner air ports 46 may be formed. In the present embodiment, one inner air port 46 is formed in the center of the bag body 20 in the left-right direction, one on the left side of the bag body 20, and one on the right side of the bag body 20 for comparison. The air inside the bag 20 is uniformly exhausted toward the outside.

As shown in FIGS. 1 and 2, the welded portion second row 42b is aligned with the welded portion second row first portion 42b1 along the second edge 22 and below the welded portion first row 42b. The welded portion 2nd row 2nd portion 42b2 and the welding portion 2nd row 3rd portion 42b3 are formed so as to be discontinuous, that is, intermittently partially welded in a straight line. That is, as shown in FIG. 2, a portion between the welded portion 2nd row 1st portion 42b1 and the welded portion 2nd row 2nd portion 42b2, which is a discontinuous portion of the welded portion 2nd row 42b, is welded. The portion between the second row second portion 42b2 of the second row and the third portion 42b3 of the second row of the welding portion is not welded to the first heat-welding film 2a and the second heat-welding film 2b. It is a portion, and the exhaust flow path 44 is opened toward the outside of the bag body 20 to form an outer air port 48 for the air exhausted from the bag body 20 to flow out from the exhaust flow path 44 to the outside of the bag body 20. There is. In the compression bag 10, one outer air port 48 may be formed, or a plurality of outer air ports 48 may be formed. In the present embodiment, two outer air ports 48 are formed at intermediate positions of the three inner air ports 46 in the left-right direction. That is, the outer air port 48 is formed at a substantially uniform distance from the inner air port 46.

The inner air port 46 and the outer air port 48 are viewed from a direction orthogonal to the second edge 22 of the plane direction in which the first heat-weldable film 2a and the second heat-weldable film 2b spread. It is formed so that it does not overlap. That is, there is no inner air port 46 on the upper side (storage portion side) of the outer air piece 48 when viewed from the lower side (second chuck portion 50 side) of FIGS. 1 and 2. When viewed from the upper side (storage portion side) of FIGS. 1 and 2, that is, when the second end edge 22 is viewed from the inside of the bag body 20, the lower side of the inner air port 46 (second chuck portion 50 side). There is no outer air vent 48. Therefore, the inner air port 46 and the outer air port 48 are viewed from the direction orthogonal to the second edge 22 of the plane direction in which the first heat-weldable film 2a and the second heat-weldable film 2b extend. It does not penetrate. That is, the air exhausted from the inside to the outside of the bag body 20 reaches from the inner air port 46 to the outer air port 48 while changing the traveling direction from the inner air port 46 to the outer air port 48. ..

Further, the welded portion 42 has a protruding portion 422 protruding inward from the exhaust flow path 44. Specifically, the first row 42a of the welded portion is located at a position opposite to the outer air port 48 in the plane direction in which the first heat-weldable film 2a and the second heat-weldable film 2b extend. It has a protrusion 422 that projects outwardly, that is, inwardly of the exhaust flow path 44. Similarly, the second row 42b of the welding portion is located inside the bag body 20 at a position opposite to the inner air port 46 in the plane direction in which the first heat welding film 2a and the second heat welding film 2b extend. It has a protruding portion 422 that projects in the direction, that is, inward of the exhaust flow path 44.

In addition, the welded portion 42 has a bent portion 424 that bends inward in the exhaust flow path 44. Specifically, as shown in FIG. 2, the welded portion first row first portion 42a1 has an inner air port in the plane direction in which the first heat-welded film 2a and the second heat-welded film 2b extend. The first heat-welding film 2a and the second heat-welding film 2b are bent downward from the right end portion forming the 46, that is, inward and to the right of the exhaust flow path 44, which is outward of the bag body 20. It has a bent portion 424a which is a portion where and is welded. The bent portion 424a is bent at an obtuse angle from the main body of the first row first portion 42a1 of the welded portion along the second edge 22. Similarly, the welded portion first row second portion 42a2 bends downward from the left end portion forming the inner air port 46, that is, outward of the bag body 20, that is, inward and leftward of the exhaust flow path 44. It has a bent portion 424b which is a portion where the first heat-weldable film 2a and the second heat-weldable film 2b are welded. The bent portion 424b is bent at an obtuse angle from the main body of the first row second portion 42a2 of the welded portion along the second edge 22. Similarly, the welded portion first row second portion 42a2 bends downward from the right end portion forming the inner air port 46, that is, outward of the bag body 20, that is, inward and rightward of the exhaust flow path 44. It has a bent portion 424c which is a portion where the first heat-weldable film 2a and the second heat-weldable film 2b are welded. The bent portion 424c is bent at an obtuse angle from the main body of the first row second portion 42a2 of the welded portion along the second edge 22. Similarly, the welded portion first row third portion 42a3 has a bent portion 424d so as to bend inward and to the left of the exhaust flow path 44 from the left end portion forming the inner air port 46. The welded portion first row third portion 42a3 has a bent portion 424e so as to bend inward and to the right of the exhaust flow path 44 from the right end portion forming the inner air port 46. The first row, fourth portion 42a4 of the welded portion has a bent portion 424f so as to bend inward and to the left of the exhaust flow path 44 from the left end portion forming the inner air port 46. The bent portion 424d and the bent portion 424e are bent at an obtuse angle from the main body of the welded portion first row third portion 42a3 along the second edge 22. The bent portion 424f is bent at an obtuse angle from the main body of the welded portion first row fourth portion 42a4 along the second edge 22. That is, the bent portions 424 facing each other so as to sandwich the inner air port 46 are bent so as to approach the inside of the exhaust flow path 44. That is, in the inner air port 46 formed between the first row first portion 42a1 of the welded portion and the second portion 42a2 of the first row of the welded portion, the distance between the bent portion 424a and the bent portion 424b is the exhaust flow path. It has a tapered shape that gradually decreases toward the inside of 44. Similarly, in the inner air port 46 formed between the welded portion first row second portion 42a2 and the welded portion first row third portion 42a3, the distance between the bent portion 424c and the bent portion 424d is the exhaust flow. It has a tapered shape that gradually decreases toward the inside of the road 44. Similarly, in the inner air port 46 formed between the welded portion 1st row 3rd portion 42a3 and the welding portion 1st row 4th portion 42a4, the distance between the bent portion 424e and the bent portion 424f is the exhaust flow. It has a tapered shape that gradually decreases toward the inside of the road 44.

Similarly, as shown in FIG. 2, the welding portion second row first portion 42b1 has an outer air port 48 in the plane direction in which the first heat welding film 2a and the second heat welding film 2b extend. The first heat-weldable film 2a and the second heat-weldable film 2b bend upward from the right end to be formed, that is, inwardly and to the leftward of the exhaust flow path 44. It has a bent portion of 424 g, which is a welded portion. The bent portion 424g is bent at an acute angle from the main body of the first portion 42b1 of the second row of the welded portion along the second edge 22. Similarly, the welded portion second row second portion 42b2 has a bent portion 424h so as to bend inward and to the right of the exhaust flow path 44 from the left end portion forming the outer air port 48. The second portion 42b2 of the second row of the welded portion has a bent portion 424i so as to bend inward and to the left of the exhaust flow path 44 from the right end portion forming the outer air port 48. The second row third portion 42b3 of the welded portion has a bent portion 424j so as to bend inward and to the right of the exhaust flow path 44 from the left end portion forming the outer air port 48. The bent portion 424g is bent at an acute angle from the main body of the first portion 42b1 of the second row of the welded portion along the second edge 22. The bent portion 424h and the bent portion 424i are bent at an acute angle from the main body of the second row second portion 42b2 of the welded portion along the second edge 22. The bent portion 424j is bent at an acute angle from the main body of the welded portion second row third portion 42b3 along the second edge 22. That is, the bent portions 424 facing each other so as to sandwich the outer air port 48 are bent so as to be separated from each other toward the inside of the exhaust flow path 44. That is, in the outer air port 48 formed between the first portion 42b1 of the second row of the welded portion and the second portion 42b2 of the second row of the welded portion, the distance between the bent portion 424 g and the bent portion 424h is the exhaust flow path. It has a tapered shape that gradually increases toward the inside of 44. Similarly, in the outer air port 48 formed between the second row second portion 42b2 of the welded portion and the third portion 42b3 of the second row of the welded portion, the distance between the bent portion 424i and the bent portion 424j is the exhaust flow. It has a tapered shape that gradually increases toward the inside of the road 44.

The inward tip of the exhaust flow path 44 in the bent portions 424a, 424b, 424c, 424d, 424e and 424f of the first row of welded portions, and the exhaust flow at the bent portions 424g, 424h, 424i and 424j of the second row of welded portions. The inwardly facing tip of the road 44 is formed so that its position is aligned in the vertical direction, which is a direction orthogonal to the second edge 22. As a result, the height of the air resistance value in the exhaust flow path 44 functions as a check valve of the check valve portion 40, that is, the air inside the check valve portion 20 passes through the check valve portion 40 and the bag body. Necessary and sufficient to exert the function of preventing the air outside the bag body 20 from flowing into the inside of the bag body 20 through the check valve portion 40 while being able to be exhausted to the outside of the bag body 20. The pressure is high.

Similar to the first chuck portion 30, the second chuck portion 50 has two rows of ridges that are vertically parallel to each other and two rows of recesses that face the two rows of ridges in the height direction and occlude the ridges. It is composed of articles and. The second chuck portion 50 is provided in the vicinity of the second edge 22 of the bag body 20 so as to extend along the second edge 22. Further, the second chuck portion 50 is provided near the second end edge 22 of the bag body 20 and outside the check valve portion 40 on the air exhaust side of the bag body 20. The second chuck portion 50 can seal the second end edge 22 side of the bag body 20 by engaging the two rows of ridges and the two rows of recesses. Further, the second chuck portion 50 opens the second end edge 22 side of the bag body 20 by separating the two rows of ridges and the two rows of recesses in the occluded state, and the check valve portion 40. The air that has passed from the inside to the outside of the bag body 20 can be exhausted to the outside of the bag body 20.

(Action effect)
According to the compression bag 10, a bag body 20 capable of storing an object to be stored inside and a bag body 20 provided near the first edge 21 of the bag body 20 can be opened / sealed. Since the bag body 20 has a first chuck portion 30 that allows the stored object to be taken in and out of the bag body 20 at the time of opening, the stored object is inserted from the first end edge 21 side and the stored object is put inside the bag body 20. By sealing the first chuck portion 30, the first end edge 21 side of the bag body 20 is sealed, and the bag body 20 is further outside the first end edge 21 side. Air does not flow into the inside of the bag body 20.

Then, as shown in FIG. 2, the compression bag 10 is provided in the vicinity of the second edge 22 of the bag body 20, and the air inside the bag body 20 is exhausted to the outside of the bag body 20 and the bag body 20 is provided. Since the check valve portion 40 is provided to prevent the outside air from flowing inward, the bag body 20 is subjected to pressure by human power while the items to be stored are stored inside the bag body 20 to reverse the bag body 20. The air air inside the bag 20 can be exhausted from the valve stop 40 to the outside of the bag 20. At this time, the check valve portion 40 prevents the air on the outside of the bag body 20 from flowing inward.

Further, the compression bag 10 is provided near the second end edge 22 of the bag body 20 and outside the check valve portion 40 on the air exhaust side of the bag body 20, and opens / seals the bag body 20. Since it has a second chuck portion 50 that can be used, the second end of the bag body 20 is formed by sealing the second chuck portion 50 in addition to the function of preventing the inflow of air by the check valve portion 40. The edge 22 side is sealed, and air does not enter the inside of the bag from further outside of the second edge 22 side.

In addition, according to the compression bag 10, the air air exhausted from the inside of the bag body 20 to the outside of the bag body 20 is between the first heat-weldable film 2a and the second heat-weldable film 2b and the welded portion. The check valve portion 40 having an exhaust flow path 44 passing substantially along the second edge 22 between the first row 42a and the second row 42b of the welded portion is subject to high pressure in a narrow gap-like flow path. Therefore, it functions as a check valve.

Further, an inner air port 46 for opening the exhaust flow path 44 substantially along the second edge 22 toward the inside of the bag body 20 and allowing the air exhausted from the bag body 20 to flow into the exhaust flow path 44. The outer air port 48 for opening the exhaust flow path 44 toward the outside of the bag body 20 and allowing the air exhausted from the bag body 20 to flow out from the exhaust flow path 44 to the outside of the bag body 20 is the first. The first heat-welding film 2a is located at a position where the heat-welding film 2a and the second heat-welding film 2b do not overlap each other when viewed from the direction orthogonal to the second edge 22 in the extending plane direction. And the second heat-weldable film 2b are not in a penetrating position in the direction orthogonal to the second edge 22 in the extending plane direction, and the exhaust flow passes substantially along the second edge 22. For example, there is a positional relationship between one shaft and the other shaft of the crank via the road 44. As a result, the air outside the bag body 20 that is about to enter the inner air port 46 from the outer air port 48 through the exhaust flow path 44 is substantially perpendicular to the entry from the outer air port 48 into the exhaust flow path 44. It passes through a flow path that bends and a flow path that bends at a substantially right angle when entering the inner air port 46 from the exhaust flow path 44. Then, in the curved flow path, it becomes difficult for air to travel.

Therefore, according to the compression bag 10, the pressure in the exhaust flow path 44 can be further increased, and the compressed state can be maintained for a longer period of time.

In addition, according to the compression bag 10, the air outside the bag body 20 that is about to enter from the outer air port 48 through the exhaust flow path 44 to the inner air port 46 is the first row 42a of the welded portion and the welded portion. The progress is hindered by the inwardly projecting portion 422 of the exhaust flow path 44 formed between the second row 42b and the exhaust flow path 44, making it difficult to proceed in the exhaust flow path 44.

Similarly, according to the compression bag 10, the air outside the bag body 20 that is about to enter from the outer air port 48 through the exhaust flow path 44 to the inner air port 46 is the first row 42a of the welded portion and the welded portion. The progress is hindered by the inwardly bent bending portion 424 of the exhaust flow path 44 formed between the second row 42b and the exhaust flow path 44, making it difficult to proceed in the exhaust flow path 44.

Therefore, according to the compression bag 10, the pressure in the exhaust flow path 44 can be further increased, and the compressed state can be maintained for a longer period of time.

From the above, according to the compression bag 10, it is possible to exhaust the air only by human power and to maintain the compressed state of the stored object for a long period of time.

(Modification example)
As shown in FIG. 4, in the compression bag 10, the bent portion 424 may not be formed in the second row 42b of the welded portion. Even in this case, the air resistance in the exhaust flow path 44 is caused by the bent portion 424 formed in the first row 42a of the welded portion and the protruding portion 422 formed in the first row 42a of the welded portion and the second row 42b of the welded portion. The height of the value can be further increased, and the compressed state can be maintained for a longer period of time.

In the check valve portion 40, in the above-described embodiment, two heat-weldable films composed of a first heat-weldable film 2a and a second heat-weldable film 2b are partially overlapped in the height direction. Although it has been described that it is formed by welding to, it may be formed by partially welding three or more heat-weldable films that overlap each other in the height direction. That is, the check valve portion 40 may be formed by partially welding a plurality of heat-weldable films substantially along the second edge 22.

In the above-described embodiment, the first chuck portion 30 and the second chuck portion 50 have two rows of ridges arranged in parallel vertically and two rows of ridges facing each other in the height direction. I explained what is composed of two rows of recesses that occlude, but three or more rows of ridges that are parallel vertically and three or more rows of ridges that face each other in the height direction and occlude the ridges. It may be composed of three or more rows of ridges, and one row of ridges and one row of ridges facing each other in the height direction and engaging the ridges. It may be composed of.

Hereinafter, the compression bag 1010 according to the second embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 6, the compression bag 1010 is a storage bag capable of compressing and storing the stored object by exhausting the stored object (not shown) such as clothes or a futon in a stored state.
The compression bag 1010 is composed of a bag body 1020, a first chuck portion 1030, a check valve portion 1040, and a second chuck portion 1050.

The bag body 1020 is a bag body that forms the main body of the compression bag 1010, and is a bag body that can store an object to be stored inside. The bag body 1020 has flexibility for storing the stored object in the inner storage portion.
Further, the bag body 1020 is made of a material that does not allow air to pass through. The bag body 1020 is formed in a tubular shape by connecting bag body forming films having the same shape in the front and rear at the left edge and the right edge.
In this embodiment, the first heat-weldable film 1002a and the second heat-weldable film 1002b, which are two heat-weldable films having the same shape, overlap each other in the height direction, and the left end edge and the right end edge are overlapped with each other. It is formed so as to have a welded laminated structure in.

The bag body forming film constituting the bag body 1020 has a laminated structure of nylon and low density polyethylene, and is formed of a flexible heat-welding film. Nylon has a thickness of 10 to 20 μm, and low-density polyethylene has a thickness of 30 to 60 μm and has a property of being able to be fused at a low temperature.
The bag body 1020 has a storage portion formed with the low-density polyethylene inside, and the region of the check valve portion 1040 of the bag body is the region other than the welded portion, which is the same as that of the low-density polyethylene of the bag body-forming film on the front side. The low-density polyethylene of the bag-forming film on the back side is configured to maintain smoothness and come into close contact with each other.

Then, in the bag body 1020, the edges of the first heat-weldable film 1002a and the second heat-weldable film 1002b are welded or sealed with a first chuck portion 1030 and a second chuck portion 1050d described later. By stopping, the inner air and the outer air can be shielded.
The bag body 1020 has a first edge 1021 which is an upper linear edge, a second edge 1022 which is a lower linear edge, and a third end which is a straight edge on the left side. It has a peripheral edge consisting of an edge 1023 and a fourth edge 1024 which is a straight edge on the right side. The first edge 1021 is an edge that serves as an entrance / exit when the stored object is taken in and out of the compression bag 1010, that is, the bag body 1020. The second edge 1022 is an edge facing the first edge 1021 and is an edge for exhaust when the air inside the compression bag 1010, that is, the bag body 1020 is exhausted to the outside. This is the edge on which the check valve portion 1040 is provided. That is, the second edge 1022 is an edge located downstream in the direction of exhausting the air, which is the folding direction, when viewed from the air inside the bag body 1020. The third edge 1023 is an edge connecting one side edge of the first edge 1021 and one side edge of the second edge 1022, and is a welded and sealed edge. be. The fourth edge 1024 is an edge that faces the third edge 1023 and connects the other end of the first edge 1021 and the other end of the second edge 1022. An edge, an edge that is welded and sealed. The third edge 1023 and the fourth edge 1024 have a width welded so as to have an adhesive strength that does not peel off even when the object to be stored is stored.
For clothing, the bag body 1020 has a vertical length from the first edge 1021 to the second edge 1022, for example, 40 cm to 70 cm, and the third edge 1023 to the fourth end. The length in the left-right direction up to the edge 1024 is, for example, 30 cm to 50 cm. For futons, the bag body 1020 has a vertical length from the first edge 1021 to the second edge 1022, for example, 100 cm to 130 cm, and the third edge 1023 to the fourth end. The length in the left-right direction up to the edge 1024 is, for example, 70 cm to 90 cm. That is, in the bag body 1020, the ratio of the length in the left-right direction to the length in the up-down direction is about 3: 4 to 5: 7 for clothing, and 7:10 to 9:13 for futon. Is the degree of.

The first chuck portion 1030 is composed of two rows of ridges that are vertically arranged in parallel and two rows of ridges that face the two rows of ridges in the height direction and occlude the ridges.
The first chuck portion 1030 is provided so as to extend along the first edge 1021 in the vicinity of the first edge 1021 of the bag body 1020.
The first chuck portion 1030 can seal the first end edge 1021 side of the bag body 1020 by engaging the two rows of protrusions and the two rows of recesses. Further, the first chuck portion 1030 can open the first end edge 1021 side of the bag body 1020 by separating the two rows of ridges and the two rows of recesses in the occlusal state. Further, the first chuck portion 1030 is formed in a size and shape that allows the stored object to be taken in and out of the storage portion of the bag body 1020 at the time of opening.

The check valve portion 1040 exhausts the air inside the bag body 1020 whose pressure has been increased by human power to the outside of the bag body 1020 and prevents the air outside the bag body 1020 from flowing inward. It is the part that functions as a valve.
The check valve portion 1040 is a horizontally long rectangular space surrounded by a linear welded portion 1042, and includes a close contact region 1072 and a closed region 1070.
The check valve portion 1040 is mainly formed of a linear welded portion. The check valve portion 1040 has a width capable of changing the air flow, and has an adhesive strength that prevents the welded portion from peeling off. The check valve portion 1040 is provided in the vicinity of the second edge 1022 of the bag body 1020 so as to extend from the third edge 1023 to the fourth edge 1024 along the second edge 1022.
In the check valve portion 1040, the first heat-weldable film 1002a and the second heat-weldable film 1002b overlapping in the height direction (front-back direction) are partially welded substantially along the second edge 1022. It is formed by that.
The vertical length of the check valve portion 1040 is preferably 5 cm or more and 10 cm or less. Further, the ratio of the vertical length of the check valve portion 1040 to the vertical length from the upper end edge of the check valve portion 1040 to the first end edge 1021 of the bag body 1020 is for clothing. It is preferably from 1: 8 to 1:12, and preferably from 1:14 to 1:19 for futons.

In the check valve portion 1040, a plurality of bag-forming films (first heat-weldable film 1002a, second heat-weldable film 1002b) are partially welded along the second edge 1022. Formed by
It is a portion where a plurality of bag body forming films (first heat-weldable film 1002a, second heat-weldable film 1002b) are welded, and at the same time, the stored object is moved to the second chuck portion 1050 side. The air exhausted from the inside of the bag body to the outside of the bag body is orthogonal to or inclined to the second edge 1022 between the plurality of film forming films and between the welded part and the welded portion 1042 which is a blocking portion. The exhaust flow path 1044 passing in the intersecting direction and the portion where the plurality of bag body forming films are not welded, the exhaust flow path 1044 is opened toward the inside of the bag body, and the air exhausted from the bag body is the exhaust flow path. The inner air port 1046 for flowing into the bag body and the portion where a plurality of bag body forming films are not welded, the exhaust flow path is opened toward the outside of the bag body, and the air exhausted from the bag body is discharged from the exhaust flow path. It is composed of an outer air port 1048 for flowing out to the outside of the bag body.

The welded portion 1042 includes a welded portion first row 1042a formed on the storage portion side away from the second edge 1022 and a welded portion second row 1042b formed in the vicinity of the second chuck portion 1050. The first row 1042a of the welded portion, the second row 1042b of the welded portion, and the second chuck portion 1050 are formed substantially parallel to the second edge 1022.

The welded portion first row 1042a is formed discontinuously and an inner air port 1046 is formed in a discontinuous region, and the welded portion second row 1042b is formed discontinuously in a discontinuous region. The outer air port 1048 is formed.

The check valve portion 1040 has a width between the check valve boundary portion 1060 extending in the width direction connecting the end edges of the welded portion on the storage portion side constituting the first row of welded portions 1042a and the first row of welded portions 1042a. A check valve boundary portion 1062 extending in the width direction connecting the end edges on the second end edge 1022 side of the welded portion constituting the second row of welded portions provided with a gap, and the left end edge of the bag body 1020. It is composed of a region surrounded by (third edge 1023) and the right edge (fourth edge 1024).

The check valve portion 1040 has a closed region 1070 in which the welded portion of the first row of welded portions 1042a and the welded portion of the second row of welded portions 1042b face each other, and the welded portion of the first row of welded portions 1042a and the second row of welded portions 1042b. It is formed between the welded portion and has a close contact region 1072 in which the bag body forming film on the front side and the bag body forming film on the back side are in close contact with each other.
The close contact region 1072 is a region extending from the check valve boundary portion 1060 extending in the width direction connecting the welded portions constituting the first row of the welded portions to the second chuck portion 1050.
In this embodiment, the close contact region 1072 is formed by a long linear first welded portion 1042a1 in the first row of adjacent welded portions and a short linear or dotted second welded portion 1042a2 in the first row of welded portions. It is a region extending from the check valve boundary portion 1060 extending in the width direction connecting the welded portions constituting the first row of welded portions to the second chuck portion 1050.

In the welded portion 1042, the first heat-weldable film 1002a and the second heat-weldable film 1002b are welded in the vicinity of the second edge 1022 of the bag body 1020 so as to substantially follow the second edge 1022. Is formed. Further, the welded portion 1042 is formed substantially along the second edge 1022 so as to be substantially parallel to each other in two rows, and is composed of a first row of welded portions 1042a and a second row of welded portions 1042b.
The first row 1042a of the welded portion and the second row 1042b of the welded portion are substantially opposed to each other. The first row 1042a of the welded portion is arranged inside the bag body 1020 with respect to the second row 1042b of the welded portion.
The first row 1042a of the welded portion prevents the object to be stored from moving toward the second chuck portion 1050 side.

As shown in FIG. 7, the welded portion first row 1042a has, in order from the left, the welded portion first row first portion 1042a1, the welded portion first row second portion 1042a2, and the welded portion first row third portion 1042a3. And the first row of the welded portion, the fourth portion 1042a4, and the first row of the welded portion, the fifth portion 1042a5.
The second row 1042b of the welded portion is, in order from the left, the second row of the welded portion, the first portion 1042b1, the second row of the welded portion, the second portion 1042b2, the second row of the welded portion, the third portion 1042b3, and the second row of the welded portion. A fourth part 1042b4 and a second row of welded parts, a fifth part 1042b5, are provided.

A set of a long linear first welded portion 1042a1 in the first row of welded portions and a long linear first welded portion 1042b1 in the second row of welded portions, and the first welded portion adjacent to each other with an appropriate width (space). The set of the short linear or dotted second welded portion 1042a2 in the row and the short linear or dotted second welded portion 1042b2 in the second row of welded portions are configured to be aligned in combination. ..
In this embodiment, there are two sets of a long linear first welded portion 1042a1 in the first row of welded portions and a long linear first welded portion 1042b1 in the second row of welded portions, which are combined and aligned. They are aligned in the width direction (horizontal direction) and are lined up with translational symmetry.

The second row of the welded portion, the third part 1042b3, and the second row of the welded portion, the fifth part 1042b5, are the same as the long linear first welded portion 1042b1 of the second row of the welded portion, and the second row of the welded portion, the fourth part 1042b4. Is the same as the short linear or dotted second welded portion 1042b2 in the second row of welded portions.

The pair of the short linear or dotted second welded portion 1042a2 in the first row of the rightmost welded portion and the short linear or dotted second welded portion 1042b2 in the second row of welded portions is located in the center in the vertical direction. Only the left side, which is the side of the long linear first welded portion 1042a1 in the first row of welded portions and the long linear first welded portion 1042b1 in the second row of welded portions, which are separated and adjacent to the left side, is the point seal portion 1042a9. And the point seal portion 1042b9 exists as a set.
The pair of the short linear or dotted second welded portion 1042a2 in the first row of the leftmost welded portion and the short linear or dotted second welded portion 1042b2 in the second row of welded portions is located in the center in the vertical direction. Only the right side, which is the side of the long linear first welded portion 1042a1 in the first row of welded portions and the long linear first welded portion 1042b1 in the second row of welded portions, which are separated and adjacent to the right side, is the point seal portion. It exists as a set of 1042a9 and a point seal portion 1042b9.

The welded portion 1042, that is, the welded portion first row 1042a and the welded portion second row 1042b form a substantially cylindrical gap between them. Then, in the gap, the air exhausted from the inside of the bag body 1020 to the outside of the bag body 1020 is formed between the first heat-weldable film 1002a and the second heat-weldable film 1002b and between the welded portions 1042. It forms an exhaust flow path 1044 that passes substantially along the edge 1022 of 2.

As shown in FIGS. 6 and 7, the welded portion first row 1042a includes the welded portion first row first portion 1042a1 and the welded portion first row second portion 1042a2 along the second edge 1022. The first row third part 1042a3, the welding part first row fourth part 1042a4, and the welding part first row fifth part 1042a5 are discontinuously welded, that is, intermittently partially welded in a straight line. It is formed. That is, as shown in FIG. 7, a portion between the welded portion 1st row 1st portion 1042a1 and the welded portion 1st row 2nd portion 1042a2, which is a discontinuous portion of the welded portion 1st row 1042a, is welded. The part between the first row second part 1042a2 and the welded part first row third part 1042a3, and the part between the welded part first row third part 1042a3 and the welded part first row fourth part 1042a4. In the portion between the welded portion 1st row 4th part 1042a4 and the welding portion 1st row 5th part 1042a5, the first heat welding film 1002a and the second heat welding film 1002b are not welded. It is a portion, and an exhaust flow path 1044 is opened toward the inside of the bag body 1020 to form an inner air port 1046 for the air exhausted from the bag body 1020 to flow into the exhaust flow path 1044.
In the compression bag 1010, one inner air port 1046 may be formed or a plurality of inner air ports 1046 may be formed.
In the present embodiment, four inner air ports 1046 are formed in the intermediate region of the bag body 1020 in the left-right direction, one on the left side of the bag body 1020, and one on the right side of the bag body 1020. The air inside the bag body 1020 is relatively uniformly exhausted toward the outside.

The welded portion 1042 has a protruding portion 1422 that protrudes in the direction of the flow path and a bent portion 1424 that bends in the direction of the flow path.
The first row of welded portions 1042a has a long linear first welded portion 1042a1 and a short linear or dotted second welded portion 1042a2 of the first row of welded portions.
The first row 1042a of the welded portion has a first protruding portion 1422a1 protruding in the direction of the flow path and a bent portion 1424a1 bent in the direction of the flow path.
The second row of welded portions 1042b has a long linear welded portion 1042b1 and a short linear or dotted second welded portion 1042b2.
The second row 1042b of the welded portion has a protruding portion 1422b1 protruding in the direction of the flow path.

The first row 1042a of the welded portion constitutes a stop position of the stored object accommodated in the storage portion, and an inner air port 1080 is formed on the left end edge side and the right end edge side of the bag body.
In the second row 1042b of the welded portion, an outer air port 1082 is formed on the left end edge side and the right end edge side of the bag body.
The inner air port 1080 and the outer air port 1082 formed on the left end edge side and the right end edge side of the bag body are in a direction orthogonal to the second end edge 1022 in the plane direction in which a plurality of bag body forming films are stretched. The positions do not overlap, and the positions are parallel to the second edge 1022 in the plane direction in which the plurality of bag-forming films are stretched.

As shown in FIGS. 6 and 7, the welded portion second row 1042b is along the second edge 1022 and below the welded portion first row 1042 a , and the welded portion second row first portion 1042b1. And the welding part 2nd row 2nd part 1042b2, the welding part 2nd row 3rd part 1042b3, the welding part 2nd row 4th part 1042b4 and the welding part 2nd row 5th part 1042b5 are discontinuous, that is, , Is formed by being partially welded in a straight line intermittently.
That is, as shown in FIG. 7, a portion between the welded portion 2nd row 1st portion 1042b1 and the welded portion 2nd row 2nd portion 1042b2, which is a discontinuous portion of the welded portion 2nd row 1042b, is welded. The part between the second row 2nd part 1042b2 of the welded part and the third part 1042b3 of the second row of the welded part, and the part between the third part 1042b3 of the second row of the welded part and the fourth part 1042b4 of the second row of the welded part. The first heat-weldable film 1002a and the second heat-weldable film 1002b are welded to the portion between the welded portion 2nd row 4th part 1042b4 and the welding portion 2nd row 5th part 1042b5. There is no portion, and the exhaust flow path 1044 is opened toward the outside of the bag body 1020 to form an outer air port 1048 for the air exhausted from the bag body 1020 to flow out from the exhaust flow path 1044 to the outside of the bag body 1020. ing.
In the compression bag 1010, one outer air port 1048 may be formed, or a plurality of outer air ports 1048 may be formed.
In the present embodiment, there are four outer air ports 1048 in the intermediate region of the bag body 1020 in the left-right direction, and four outer air ports 1048 are formed at the same positions as the four inner air ports 1046. That is, the outer air port 1048 is formed at a substantially uniform distance from the inner air port 1046.

The inner air port 1046 and the outer air port 1048 are viewed from a direction orthogonal to the second edge 1022 in the plane direction in which the first heat-weldable film 1002a and the second heat-weldable film 1002b spread. It is formed so as to be in an overlapping position. Then, when viewed from the lower side (second chuck portion 1050 side) of FIGS. 6 and 7, the inner air port 1046 exists on the upper side (storage portion side) of the outer air port 1048. The outer air port 1048 exists below the inner air port 1046 when viewed from the upper side (storage portion side) of FIGS. 6 and 7, that is, when the second edge 1022 is viewed from the inside of the bag body 1020. ..
The inner air port 1046 and the outer air port 1048 are viewed from a direction orthogonal to the second edge 1022 in the plane direction in which the first heat-weldable film 1002a and the second heat-weldable film 1002b spread. It penetrates.
The air exhausted from the inner storage portion of the bag body 1020 toward the outside corresponds to the upper side of the linear long first welding portion 1042a1 in the first row of the welding portions, and reaches from the inner air port 1046 to the outer air port 1048. From the inner air port 1046 to the outer air port 1048 while changing the traveling direction.
Then, between the inner air port 1046 and the outer air port 1048, a part thereof is a long linear first welded portion 1042a1 in the first row of the welded portion and a long linear first weld in the second row of the welded portion. It flows between the portion 1042b1 and between the short linear or dotted second welded portion 1042a2 in the first row of the welded portion and the short linear or dotted second welded portion 1042b2 in the second row of the welded portion. It flows in and flows between them to reach the outer air vent 1048.

The length of the inner air port in the width direction of the check valve portion 1040 is longer than the length of the long linear first welded portion in the width direction of the check valve portion 1040, and the outside of the check valve portion 1040 in the width direction. The length of the air port is longer than the length of the long linear first welded portion in the width direction of the check valve portion 1040.
The long linear first welded portion 1042a1 of the first row of welded portions 1042a faces the long linear first welded portion 1042b1 of the second row of welded portions 1042b, and the first welded portion in the width direction of the check valve portion 1040. The length of the linearly long first welded portion in the row is longer than the length of the linearly long first welded portion in the second row of welded portions 1042b.

Further, the welded portion 1042 has a protruding portion 1422 protruding inward in the exhaust flow path 1044.
Specifically, the welded portion first row 1042a is located at a position facing the welded portion second row 1042b in the plane direction in which the first heat-welded film 1002a and the second heat-welded film 1002b spread. It has a protrusion 1422 that projects outward of the 1020, i.e., inward of the exhaust flow path 1044. Similarly, the second row of welded portions 1042b has a long linear first welded portion 1042a1 of the first row of welded portions in the plane direction in which the first heat-welded film 1002a and the second heat-welded film 1002b spread. At the facing positions, there is a protrusion 1422 that projects inward of the bag body 1020, that is, inward of the exhaust flow path 1044.

A long linear first welded portion 1042a1 in the first row of welded portions and a first protruding portion 1422a1 protruding in the direction of the flow path of the first row of welded portions formed at the center in the width direction of the first welded portion 1042a1. Is formed integrally with.
A short linear or dot-shaped second welded portion 1042a2 in the first row of welded portions and a second welded portion 1042a2 protruding in the direction of the flow path of the first row of welded portions formed at the center in the width direction of the second welded portion 1042a2. It is integrally formed with the projecting portion 1422a2.

The long linear first welded portion 1042b1 in the second row of the welded portion and the protruding portion 1422b1 protruding in the direction of the flow path of the second row of the welded portion formed at the center in the width direction of the first welded portion 1042b1. It is formed integrally.

The long linear first welded portion 1042a1 in the first row of welded portions and the long linear first welded portion 1042b1 in the second row of welded portions face each other at appropriate intervals in order to achieve a check valve effect. In addition, the first projecting portion 1422a1 projecting in the direction of the flow path in the first row of the welded portion and the projecting portion 1422b1 projecting in the direction of the flow path in the second row of the welded portion enhance the adhesive force and provide a check valve effect. They face each other at appropriate intervals to fulfill.

The distance between the first protrusion 1422a1 protruding in the direction of the flow path in the first row of the welded portion and the protrusion 1422b1 protruding in the direction of the flow path in the second row of the welded portion was narrowed on the left side thereof. This is to prevent air from flowing between the right side and the right side.
When the air that has entered the storage portion of the compression bag 1010 is pulled out from the inner air port 1046 and the outer air port 1048, the first protruding portion 1422a1 and the second row of the welded portion project in the direction of the flow path of the first row of the welded portion. It is stopped by a narrow flow path formed between the projecting portion 1422b1 protruding in the direction of the flow path of the air, and flows out toward the outer air port 1048.

The air flowing back from the outer air port 1048 toward the storage portion is blocked by the linear long first welded portion 1042a 1 in the first row of the welded portion, and is blocked by the linear long first welded portion 1042b1 in the second row of the welded portion. It stays between the two and is difficult to flow toward the inner air port 1046, and it is possible to prevent air from entering the inside of the bag from the outside.

In addition, the welded portion 104 2 has a bent portion 1424 that bends inward in the exhaust flow path 1044. Specifically, as shown in FIG. 7, the welded portion first row first portion 1042a1 has an inner air port in the plane direction in which the first heat-welded film 1002a and the second heat-welded film 1002b extend. The first heat-welding film 1002a and the second heat-welding film 1002b are bent downward from the right end portion forming the 1046, that is, outward of the bag body 1020, that is, inward and rightward of the exhaust flow path 1044. It has a bent portion 1424 which is a portion where and is welded.
The bent portion 1424 is bent at an obtuse angle from both ends of the main body of the first portion 1042a1 of the first row of the welded portion. The first portion 1042a1 of the first row of the welded portion bends downward from the left end portion forming the inner air port 1046, which is outward of the bag body 1020, that is, inward and leftward of the exhaust flow path 1044. It has a bent portion 1424a which is a portion where the heat-weldable film 1002a and the second heat-weldable film 1002b are welded. The bent portion 1424a is bent at an obtuse angle from the main body of the first row second portion 1042a2 of the welded portion along the second edge 1022. Similarly, the welded portion first row first portion 1042a1 bends downward from the right end portion forming the inner air port 1046, which is outward of the bag body 1020, that is, inward and rightward of the exhaust flow path 1044. It has a bent portion 1424b which is a portion where the first heat-weldable film 1002a and the second heat-weldable film 1002b are welded.
That is, the bent portion 1424 facing so as to sandwich the inner air port 1046 and the short linear or dotted second welded portion 1042a2 in the first row of welded portions are bent so as to approach each other via the exhaust flow path 1044. is doing.
That is, the inner air port 1046 formed between the first row of the welded portion 1042a1 and the second portion 1042a2 of the first row of the welded portion has a short linear or dotted shape of the bent portion 1424b and the first row of the welded portion. It has a tapered shape in which the distance between the second welded portion 1042a2 and the second welded portion 1042a2 gradually decreases as it advances in the exhaust flow path 1044.
Similarly, the inner air port 1046 formed between the welded portion 3rd row 2nd portion 1042a3 and the welded portion 1st row 2nd portion 1042a2 is a short linear or point of the bent portion 1424a and the welded portion 1st row. It has a tapered shape in which the distance between the second welded portion 1042a2 and the second welded portion 1042a2 gradually decreases as it advances in the exhaust flow path 1044.
Similarly, the inner air port 1046 formed between the welded portion 1st row 5th portion 1042a5 and the welding portion 1st row 4th portion 1042a4 has a bent portion 1424a and a welding portion 1st row 4th portion 1042a4. It has a tapered shape that gradually decreases as the distance between them advances in the exhaust flow path 1044.

Since the bent portion spreads to the left and right, air flowing outward from the storage portion side flows in the left-right direction from the main body of the long linear first welded portion 1042a1 in the first row of the welded portion, and the line of the first row of the welded portion. It can be guided to the inner air port 1046 and the inner air port 1080 side existing on the left and right of the long first welded portion 1042a1.

Since the bent portion spreads to the left and right and narrows the distance from the short linear or dotted second welded portion 1042a2 in the first row of the welded portion, it is possible to prevent the backflow of air flowing from the outside.

The width (length in the left-right direction) of the linearly long first welded portion 1042a1 in the first row of welded portions and the linearly long first welded portion 1042b1 in the second row of welded portions is linear in the first row of welded portions. The long first welded portion 1042a1 is longer, and both ends of the linearly long first welded portion 1042a1 of the first row of welded portions protruding in the left-right direction from the linearly long first welded portion 1042b1 in the second row of welded portions. The portion (including the bent portion) has a function of preventing backflow from the outside.

A short linear or dotted second in the first row of welds adjacent to the long linear first weld 1042a1 in the first row of welds and the long linear first weld 1042a1 in the first row of welds. The distances between the welded portions 1042a2 are set to be substantially equal in each combination (a long linear first welded portion 1042a1 in the first row of welded portions and a short linear or short linear welded portion in the first row of the welded portions). (Combination with the dotted second welded portion 1042a2), arranged.
As a result, the adhesion strength of the adhesion region 1072 becomes almost uniform, and the backflow of air can be prevented uniformly in the entire region.

The first row 1042a of the welded portion and the second row 1042b of the welded portion are point-sealed portions in the vicinity of the third edge 1023 and the fourth edge 1024 in order to strengthen the adhesive force of the check valve boundary portion. It is composed of (1042a9, 1042b9).
The width (length in the left-right direction) of the point seal portion (1042a9, 1042b9) has a length substantially equal to or slightly longer than the width of the third edge 1023 and the fourth edge 1024. The bag-forming film in the close contact region 1072 is configured to be in close contact with each other.

An outer air port 1082 and an inner air port 1080 are formed in the vicinity of the third edge 1023 and the vicinity of the fourth edge 1024, respectively.
In the region of the outer air port 1082 and the inner air port 1080 formed in the vicinity of the third edge 1023 and the vicinity of the fourth edge 1024, an object to be stored is put inside the bag body 1020 to allow air to flow. Due to the thickness of the object to be stored and the outflow of air inside the bag body 1020, the first heat-welding film 1002a and the second heat-welding film 1002b sandwich the third edge 1023 at the time of discharging. However, since it swells outward and there is no stored object, the speed at which air flows out to the outside increases.
As described above, in the welded portion first row 1042a and the welded portion second row 1042b, there is a welded portion non-existent portion which is not formed in the vicinity of the third edge edge 1023 and the fourth edge edge 1024.
The non-existent portion of the welded portion constitutes an outflow promoting portion for allowing the air to flow out to the outside more quickly when the air in the storage portion is to be discharged to the outside when the stored object is compressed and stored. do.

An adhesion region 1072 exists between the long linear welded portion 1042a1 in the first row of welded portions and the short linear or dotted second welded portion 1042a2 in the first row of welded portions.
The width (length in the left-right direction) of the close contact region 1072 has almost the same width as the linear long first welded portion 1042a1 in the first row of welded portions, and the first heat-weldable films 1002a and the second The heat-weldable film 1002b of the above is in close contact with the film and has a function as a check valve portion 1040, so that air can be prevented from entering the inside of the bag from the outside.

The closed region 1070 formed between the linearly long first welded portion 1042a1 in the first row of welded portions and the linearly long first welded portion 1042b1 in the second row of welded portions is a first heat-weldable film. The 1002a and the second heat-weldable film 1002b are easily adhered to each other, have a function of increasing the degree of adhesion of the adhesion region 1072, and have a function of preventing backflow of air from the outside.

The width (in the left-right direction) of the long linear first welded portion 1042a1 in the first row of the welded portion is such that the stored object such as the futon stored in the storage portion of the bag body 1020 is in the area of the check valve portion 1040. The length is set so that it does not enter.

The short linear or dotted second welded portion 1042a2 in the first row of welded portions and the short linear or dotted second welded portion 1042b2 in the second row of welded portions are linear in the first row of adjacent welded portions. In the close contact region 1072 formed between the long first welded portions 1042a1, the width is suitable for the first hot weldable film 1002a and the second hot weldable film 1002b to come into close contact with each other, that is, the check valve. It is formed so as to be able to perform the function of the portion 1040.

Like the first chuck portion 1030, the second chuck portion 1050 has two rows of ridges that are vertically parallel to each other and two rows of recesses that face the two rows of ridges in the height direction and occlude the ridges. It is composed of articles and. The second chuck portion 1050 is provided in the vicinity of the second edge 1022 of the bag body 1020 so as to extend along the second edge 1022. Further, the second chuck portion 1050 is provided near the second end edge 1022 of the bag body 1020 and outside the check valve portion 1040 on the air exhaust side of the bag body 1020.
The second chuck portion 1050 can seal the second end edge 1022 side of the bag body 1020 by engaging the two rows of ridges and the two rows of recesses. Further, the second chuck portion 1050 opens the second end edge 1022 side of the bag body 1020 by separating the two rows of ridges and the two rows of recesses in the occluded state, and the check valve portion 1040. The air that has passed from the inside to the outside of the bag body 1020 can be exhausted to the outside of the bag body 1020.

(Action effect)
According to the compression bag 1010, a bag body 1020 capable of storing an object to be stored inside and a bag body 1020 provided in the vicinity of the first edge 1021 of the bag body 1020 can be opened / sealed. In addition, since it has a first chuck portion 1030 that allows the stored object to be taken in and out of the bag body 1020 at the time of opening, the stored object is inserted from the first end edge 1021 side and stored inside the bag body 1020. By sealing the first chuck portion 1030 while being able to store an object, the first end edge 1021 side of the bag body 1020 is sealed, and further on the first end edge 1021 side of the bag body 1020. Air does not flow into the inside of the bag body 1020 from the outside.

Then, as shown in FIG. 7, the compression bag 1010 is provided in the vicinity of the second edge 1022 of the bag body 1020, and the air inside the bag body 1020 is exhausted to the outside of the bag body 1020 and the bag body 1020 is exhausted. Since it has a check valve portion 1040 that prevents the air from the outside of the bag from flowing into the inside, pressure is applied to the bag 1020 by human power while the items to be stored are stored inside the bag 1020. The air air inside the bag body 1020 can be exhausted from the check valve portion 1040 to the outside of the bag body. At this time, the check valve portion 1040 prevents the air on the outside of the bag body 1020 from flowing inward.

Further, the compression bag 1010 is provided near the second end edge 1022 of the bag body 1020 and outside the check valve portion 1040 on the air exhaust side of the bag body 1020, and opens the bag body 1020. Since it has a second chuck portion 1050 that can be sealed, in addition to the function of preventing the inflow of air by the check valve portion 1040, by sealing the second chuck portion 1050, the second chuck portion 1020 of the bag body 1020 can be sealed. The end edge 1022 side is sealed, and air does not enter the inside of the bag from further outside of the second edge 1022 side.

In addition, according to the compression bag 1010, the air air exhausted from the inside of the bag body 1020 to the outside of the bag body 1020 is between the first heat-weldable film 1002a and the second heat-weldable film 1002b and the welded portion. The check valve portion 1040 having an exhaust flow path 1044 passing substantially along the second edge 1022 between the first row 1042a and the welded portion second row 1042b utilizes high pressure in a narrow gap-like flow path. It functions as a check valve.

Further, an exhaust flow path 1044 passing substantially along the second edge 1022 is opened toward the inside of the bag body 1020, and an inner air port 1046 for flowing air exhausted from the bag body 1020 into the exhaust flow path 1044. The outer air port 1048 for opening the exhaust flow path 1044 toward the outside of the bag body 1020 and allowing the air exhausted from the bag body 1020 to flow out from the exhaust flow path 1044 to the outside of the bag body 1020, and the closed region 1070. And because of the close contact region 1072, high pressure is applied at the opening, which makes it difficult for air to travel into the exhaust flow path 1044 and into the inner air port 1046.

Therefore, according to the compression bag 1010, the pressure in the exhaust flow path 1044 can be further increased, and the compressed state can be maintained for a longer period of time.

In addition, according to the compression bag 1010, the air outside the bag body 1020 that is about to enter from the outer air port 1048 through the exhaust flow path 1044 to the inner air port 1046 is welded to the first row 1042a of the welding portion. The progress is hindered by the inwardly projecting portion 1422 of the exhaust flow path 1044 formed between the second row 1042b, and it becomes difficult to proceed in the exhaust flow path 1044.

Similarly, according to the compression bag 1010, the air outside the bag body 1020 that tries to enter from the outer air port 1048 through the exhaust flow path 1044 to the inner air port 1046 is formed in the first row 1042a of the welded portion. The progress is hindered by the bent portion 1424 that bends inward in the exhaust flow path 1044, and it becomes difficult to proceed in the exhaust flow path 1044.

Therefore, according to the compression bag 1010, the pressure in the exhaust flow path 1044 can be increased, and the compressed state can be maintained for a longer period of time.

From the above, according to the compression bag 1010, it is possible to exhaust the air only by human power, and it is possible to maintain the compressed state of the stored object for a long period of time.

(Modification example)

A modified example of the compression bag according to the second embodiment of the present invention will be described below, mainly based on FIGS. 13 and 14. This modification differs from the compression bag according to the second embodiment in the check valve portion.

As shown in FIGS. 13 and 14, in the welded portion first row 1042a, in order from the left, the welded portion first row first portion 1042a1, the welded portion first row second portion 1042a2, and the welded portion first row third row. A portion 1042a3, a welding portion 1st row, 4th portion 1042a4, and a welding portion 1st row, 5th portion 1042a5 are provided.
The second row 1042b of the welded portion is, in order from the left, the second row of the welded portion, the first portion 1042b1, the second row of the welded portion, the second portion 1042b2, the second row of the welded portion, the third portion 1042b3, and the second row of the welded portion. A fourth part 1042b4 and a second row of welded parts, a fifth part 1042b5, are provided.

As shown in FIGS. 13 and 14, in the first row of welded portions 1042a, a long linear first welded portion 1042a1 in the first row of welded portions and a short linear or dotted second welded portion in the first row of welded portions. A spot-shaped welded portion 1042a8 is formed between 1042a2.
As shown in FIGS. 13 and 14, in the second row of welded portions 1042b, a protrusion is formed in the short linear or dotted second welded portion 1042b2 of the second row of welded portions, and the second welded portion is also formed. It forms a protrusion formed in the long linear first welded portion 1042b1 in a row.

A set of a long linear first welded portion 1042a1 in the first row of welded portions and a long linear first welded portion 1042b1 in the second row of welded portions, and the first welded portion adjacent to each other with an appropriate width (space). The set of the short linear or dotted second welded portion 1042a2 in the row and the short linear or dotted second welded portion 1042b2 in the second row of welded portions are configured to be aligned in combination. ..
In this embodiment, a set of a long linear first welded portion 1042a1 in the first row of welded portions and a long linear first welded portion 1042b1 in the second row of welded portions, which are combined and aligned, and a welded portion. The pair of the short linear or dotted second welded portion 1042a2 in the first row and the short linear or dotted second welded portion 1042b2 in the second row of welded portions is the welded portion first row third portion 1042a3 and welded. With the set of the second part, the second part, and the third part 1042b3 sandwiched between them, the two parts are aligned in the width direction (left-right direction) continuously and are arranged with translational symmetry.

The first row of the welded portion, the fifth part 1042a5, and the second row of the welded portion, the fifth part 1042b5, are the long linear first welded portion 1042a1 of the first row of the welded portion and the long linear first welded portion of the second row of the welded portion. It is the same as the part 1042b1, and the welding part 1st row 4th part 1042a4 and the welding part 2nd row 4th part 1042b4 are the short linear or dotted second welding part 1042a2 of the welding part 1st row and the welding part 1st. It is the same as the two rows of short linear or dotted second welds 1042b2.

The pair of the short linear or dotted second welded portion 1042a2 in the first row of the rightmost welded portion and the short linear or dotted second welded portion 1042b2 in the second row of welded portions is located in the center in the vertical direction. Only the left side, which is the side of the long linear first welded portion 1042a1 in the first row of welded portions and the long linear first welded portion 1042b1 in the second row of welded portions, which is divided and has the left side, is the point seal portion 1042a9. It exists as a set of point seal portions 1042b9.
The pair of the short linear or dotted second welded portion 1042a2 in the first row of the leftmost welded portion and the short linear or dotted second welded portion 1042b2 in the second row of welded portions is located in the center in the vertical direction. Only the right side, which is the side of the long linear first welded portion 1042a1 in the first row of welded portions and the long linear first welded portion 1042b1 in the second row of welded portions, which are divided and have on the right side, is the point seal portion 1042a9. And the point seal portion 1042b9 exists as a set.

The welded portion 1042, that is, the welded portion first row 1042a and the welded portion second row 1042b form a substantially cylindrical gap between them. Then, in the gap, the air exhausted from the inside of the bag body 1020 to the outside of the bag body 1020 is formed between the first heat-weldable film 1002a and the second heat-weldable film 1002b and between the welded portions 1042. It forms an exhaust flow path 1044 that passes substantially along the edge 1022 of 2.

As shown in FIGS. 13 and 14, the welded portion first row 1042a has the welded portion first row first portion 1042a1 and the welded portion first row second portion 1042a2 along the second edge 1022. The first row third part 1042a3, the welding part first row fourth part 1042a4, and the welding part first row fifth part 1042a5 are discontinuously welded, that is, intermittently partially welded in a straight line. It is formed. That is, as shown in FIG. 14, a portion between the welded portion 1st row 1st portion 1042a1 and the welded portion 1st row 2nd portion 1042a2, which is a discontinuous portion of the welded portion 1st row 1042a, is welded. The part between the first row second part 1042a2 and the welded part first row third part 1042a3, and the part between the welded part first row third part 1042a3 and the welded part first row fourth part 1042a4. In the portion between the welded portion 1st row 4th part 1042a4 and the welding portion 1st row 5th part 1042a5, the first heat welding film 1002a and the second heat welding film 1002b are not welded. It is a portion, and an exhaust flow path 1044 is opened toward the inside of the bag body 1020 to form an inner air port 1046 for the air exhausted from the bag body 1020 to flow into the exhaust flow path 1044.
In the compression bag 1010, one inner air port 1046 may be formed or a plurality of inner air ports 1046 may be formed.
In the present embodiment, four inner air ports 1046 are formed in the intermediate region of the bag body 1020 in the left-right direction, one on the left side of the bag body 1020, and one on the right side of the bag body 1020. The air inside the bag body 1020 is relatively uniformly exhausted toward the outside.

The welded portion 1042 has a protruding portion 1422 that protrudes in the direction of the flow path and a bent portion 1424 that bends in the direction of the flow path.
The first row of welded portions 1042a has a long linear first welded portion 1042a1 and a short linear or dotted second welded portion 1042a2 of the first row of welded portions.
The first row 1042a of the welded portion has a first protruding portion 1422a1 protruding in the direction of the flow path and a bent portion 1424a1 bent in the direction of the flow path.
The second row of welded portions 1042b has a long linear welded portion 1042b1 and a short linear or dotted second welded portion 1042b2.
The second row 1042b of the welded portion has a protruding portion 1422b1 protruding in the direction of the flow path.

The first row 1042a of the welded portion constitutes a stop position of the stored object accommodated in the storage portion, and an inner air port 1080 is formed on the left end edge side and the right end edge side of the bag body.
In the second row 1042b of the welded portion, an outer air port 1082 is formed on the left end edge side and the right end edge side of the bag body.
The inner air port 1080 and the outer air port 1082 formed on the left end edge side and the right end edge side of the bag body are in a direction orthogonal to the second end edge 1022 in the plane direction in which a plurality of bag body forming films are stretched. The positions do not overlap.

As shown in FIGS. 13 and 14, the welded portion second row 1042b is along the second edge 1022 and below the welded portion first row 1042 a , and the welded portion second row first portion 1042b1. And the welding part 2nd row 2nd part 1042b2, the welding part 2nd row 3rd part 1042b3, the welding part 2nd row 4th part 1042b4 and the welding part 2nd row 5th part 1042b5 are discontinuous, that is, , Is formed by being partially welded in a straight line intermittently.
That is, as shown in FIG. 7, a portion between the welded portion 2nd row 1st portion 1042b1 and the welded portion 2nd row 2nd portion 1042b2, which is a discontinuous portion of the welded portion 2nd row 1042b, is welded. The part between the second row 2nd part 1042b2 of the welded part and the third part 1042b3 of the second row of the welded part, and the part between the third part 1042b3 of the second row of the welded part and the fourth part 1042b4 of the second row of the welded part. The first heat-weldable film 1002a and the second heat-weldable film 1002b are welded to the portion between the welded portion 2nd row 4th part 1042b4 and the welding portion 2nd row 5th part 1042b5. There is no portion, and the exhaust flow path 1044 is opened toward the outside of the bag body 1020 to form an outer air port 1048 for the air exhausted from the bag body 1020 to flow out from the exhaust flow path 1044 to the outside of the bag body 1020. ing.
In the compression bag 1010, one outer air port 1048 may be formed, or a plurality of outer air ports 1048 may be formed.
In the present embodiment, there are four outer air ports 1048 in the intermediate region of the bag body 1020 in the left-right direction, and four outer air ports 1048 are formed at the same positions as the four inner air ports 1046. That is, the outer air port 1048 is formed at a substantially uniform distance from the inner air port 1046.

The inner air port 1046 and the outer air port 1048 are viewed from a direction orthogonal to the second edge 1022 in the plane direction in which the first heat-weldable film 1002a and the second heat-weldable film 1002b spread. It is formed so as to be in an overlapping position. The inner air port 1046 is located on the upper side (storage portion side) of the outer air port 1048 when viewed from the lower side (second chuck portion 1050 side) of FIGS. 13 and 14. The outer air port 1048 exists below the inner air port 1046 when viewed from the upper side (storage portion side) of FIGS. 13 and 14, that is, when the second end edge 1022 is viewed from the inside of the bag body 1020. ..
Therefore, the inner air port 1046 and the outer air port 1048 are viewed from a direction orthogonal to the second edge 1022 in the plane direction in which the first heat-weldable film 1002a and the second heat-weldable film 1002b spread. And penetrates.
The air exhausted from the inner storage portion of the bag body 1020 toward the outside corresponds to the upper side of the linear long first welding portion 1042a1 in the first row of the welding portions, and reaches from the inner air port 1046 to the outer air port 1048. From the inner air port 1046 to the outer air port 1048 while changing the traveling direction.
Then, between the inner air port 1046 and the outer air port 1048, a part thereof is a long linear first welded portion 1042a1 in the first row of the welded portion and a long linear first weld in the second row of the welded portion. It flows between the portion 1042b1 and between the short linear or dotted second welded portion 1042a2 in the first row of the welded portion and the short linear or dotted second welded portion 1042b2 in the second row of the welded portion. It flows in and flows between them to reach the outer air vent 1048.

The length of the inner air port in the width direction of the check valve portion 1040 is shorter than the length of the long linear first welded portion in the width direction of the check valve portion 1040, and the outside of the check valve portion 1040 in the width direction. The length of the air port is longer than the length of the long linear first welded portion in the width direction of the check valve portion 1040.
The long linear first welded portion 1042a1 of the first row of welded portions 1042a faces the long linear first welded portion 1042b1 of the second row of welded portions 1042b, and the first welded portion in the width direction of the check valve portion 1040. The length of the linearly long first welded portion 1042a1 in the row is longer than the length of the linearly long first welded portion 1042b1 in the second row of welded portions.

Further, the welded portion 1042 has a protruding portion 1422 protruding inward in the exhaust flow path 1044.
Specifically, the welded portion first row 1042a is located at a position facing the welded portion second row 1042b in the plane direction in which the first heat-welded film 1002a and the second heat-welded film 1002b spread. It has a protrusion 1422 that projects outward of the 1020, i.e., inward of the exhaust flow path 1044. Similarly, the second row of welded portions 1042b has a long linear first welded portion 1042a1 of the first row of welded portions in the plane direction in which the first heat-welded film 1002a and the second heat-welded film 1002b spread. At the facing positions, there is a protrusion 1422 that projects inward of the bag body 1020, that is, inward of the exhaust flow path 1044.

As described above, the embodiments of the present invention are disclosed in the above description, but the present invention is not limited thereto.
That is, various changes can be made to the above-described embodiments with respect to the mechanism, shape, material, quantity, position, arrangement, etc., without departing from the scope of the technical idea and purpose of the present invention. They are, and they are included in the present invention.

10,1010 Compressed bag 20,1020 Bag body 2a, 1002a First heat-weldable film 2b, 1002b Second heat-weldable film 21,1021 First edge 22,1022 Second edge 23,1023 3 edge 24,1024 4th edge 30,1030 1st chuck part 40,1040 Check valve part 42,1042 Welding part 42a, 1042a Welding part 1st row 42a1 Welding part 1st row 1st part 1042a1 Welding part 1st row linear long 1st welding part 42a2 Welding part 1st row 2nd part 1042a2 Welding part 1st row short linear or dotted second welding part 42a3, 1042a3 Welding part 1st row 1st 3 parts 42a4, 1042a4 Welding part 1st row 4th part 1042a5 Welding part 1st row 5th part 1042a9 Point seal part 42b, 1042b Welding part 2nd row 42b1 Welding part 2nd row 1st part 1042b1 Welding part 2nd row Long linear first welded part 42b2 Welded part 2nd row 2nd part 1042b2 Welded part 2nd row short linear or dotted second welded part 42b3, 1042b3 Welded part 2nd row 3rd part 1042b4 Welding part 1st 2nd row 4th part 1042b5 Welding part 2nd row 5th part 1042b9 Point seal part 422,1422 Protruding part 1422a1 Welding part 1st protruding part 1422a2 Welding part 1st row flow path protruding in the direction of the 1st row flow path 2nd projecting portion 1422b1 protruding in the direction of Bending portions 44,1044 Exhaust flow paths 46,1046,1080 Inner air ports 48,1048,1082 Outer air ports 50,1050 Second chuck portion 1060 Welding portion Width direction connecting welded portions forming the first row Check valve boundary extending 1062 Welding part Check valve boundary extending in the width direction connecting the welding parts forming the second row 1070 Closed area 1072 Adhesion area air Air

Claims (6)

It is composed of a bag that can store items to be stored inside.
The bag has a substantially rectangular shape, and has a first edge, a second edge parallel to the first edge, and a left end of the first edge and a left end of the second edge. A bag-forming film having a third edge to be tied, a fourth edge connecting the right end of the first edge and the right end of the second edge, and having substantially the same planar shape is laminated. The third end edge and the fourth end edge are connected to each other, and a storage portion for storing an object to be stored is provided between the facing surfaces of the facing bag body forming films.
A first chuck portion provided in the vicinity of the first end edge of the bag body, which can open / seal the bag body and can put in and take out items to be stored in the bag body at the time of opening.
Provided near the second edge of the bag body, the air in the storage portion inside the bag body is exhausted to the outside of the bag body, and the air outside the bag body is prevented from flowing into the inner storage portion. Check valve and
A second chuck portion provided near the second end edge of the bag body and on the outside of the check valve portion on the air exhaust side of the bag body and capable of opening / sealing the bag body. Including, compression bag. The check valve portion is
Multiple pouch-forming films are formed by partially welding along the second edge.
The welded part, which is the part where a plurality of bag body forming films are welded and the part which prevents the stored object from moving to the second chuck side, and the air exhausted from the inside of the bag body to the outside of the bag body. Is the exhaust flow path that passes substantially along the second edge between the plurality of bag-forming films and between the welded portions, and the portion where the plurality of bag-forming films are not welded and is inside the bag. The inner air port for opening the exhaust flow path toward the bag and allowing the air exhausted from the bag body to flow into the exhaust flow path, and the portion where the multiple bag body forming films are not welded toward the outside of the bag body. It is composed of an outer air port for opening the exhaust flow path and allowing the air exhausted from the bag body to flow out from the exhaust flow path to the outside of the bag body.
The welded part is
It has a first row of welded portions formed on the storage portion side away from the second edge and a second row of welded portions formed in the vicinity of the second chuck portion.
The first row of welded portions, the second row of welded portions, and the second chuck portion are formed substantially parallel to the second edge.
The first row of welded portions is formed discontinuously, and an inner air port is formed in a non-continuous region.
The compression bag according to claim 1 , wherein the second row of welded portions is formed discontinuously, and an outer air port is formed in a non-continuous region. The check valve is
A check valve boundary portion extending in the width direction connecting the welded portions constituting the first row of the welded portions and a welded portion constituting the second row of the welded portions provided with a width apart from the first row of the welded portions. It is composed of a check valve boundary extending in the tied width direction and an area surrounded by the left and right edge edges of the bag body.
A closed region where the welded portion in the first row of the welded portion and the welded portion in the second row of the welded portion face each other,
The bag body forming film formed between the welded part in the first row of the welded part and the welded part in the second row of the welded part, and constitutes the bag body on the front side and the bag body forming film forming the bag body on the back side are in close contact with each other. The compression bag according to claim 1 or 2 , further comprising a close contact area. The welded portion has a protruding portion that protrudes inward in the exhaust flow path and a bent portion that bends inward in the exhaust flow path.
The first row of welded portions has a long linear welded portion and a short linear or dotted second welded portion.
The first row of welded portions has a protruding portion that protrudes inward in the exhaust flow path and a bent portion that bends inward in the exhaust flow path.
The second row of welded portions has a long linear welded portion and a short linear or dotted second welded portion.
The compression bag according to claim 2 , wherein the second row of welded portions has a protruding portion that protrudes inward in the exhaust flow path. The length of the inner air port in the width direction of the check valve portion is longer than the length of the long linear first welded portion in the width direction of the check valve portion.
The length of the outer air port in the width direction of the check valve portion is longer than the length of the long linear first welded portion in the width direction of the check valve portion.
The long linear first welded portion in the first row of the welded portion faces the long linear first welded portion in the second row of the welded portion, and the linear long welded portion in the width direction of the check valve portion is linear. The compression bag according to any one of claims 1 to 4 , wherein the length of the long first welded portion is longer than the length of the linear long first welded portion in the second row of the welded portions. The first row of welded parts constitutes a stop position for the items to be stored in the storage part, and inner air ports are formed on the left end edge side and the right end edge side of the bag body, and at the same time.
In the second row of welded parts, outer air vents are formed on the left end edge side and the right end edge side of the bag body.
The inner air port and the outer air port formed on the left end edge side and the right end edge side of the bag body do not overlap each other in the direction orthogonal to the second end edge in the plane direction in which the plurality of bag body forming films extend. The compression bag according to any one of claims 1 to 5 , which is a position and is a position parallel to the second edge in the plane direction in which a plurality of bag-forming films are stretched.

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