bag

Abstract

Provide a bag that makes it easy to put things into. [Solution] A bag 1 is formed in the shape of a bag having a pair of sheet-like film sections 2 arranged opposite each other in the thickness direction, the lower ends and both ends in the width direction of the pair of film sections are connected to each other, and an opening 12 at the upper end, the opening having a handle section 3 located in the middle of the width direction and provided on each of the pair of film sections and secured by a locking device, one opening section 4 extending from the handle section to one end in the width direction, and the other opening section 5 extending from the handle section to the other end in the width direction, the one end in the width direction of the one opening section being located below the upper end of the handle section and below the other end in the width direction of the other opening section.

Description

Technical Field

[0001] The present invention relates to a bag.

Background Art

[0002] Conventionally, a bag described in Patent Document 1 is known. The bag includes a front film and a back film formed by folding a single synthetic resin film, a bottom located at the lower end, a welded portion formed by welding both side portions in the width direction of the front film and the back film, and an opening formed by the upper end portions of the front film and the back film. The bottom is formed by a fold formed by folding a single synthetic resin film. Further, the opening is provided in each of the front film and the back film, is located at the central portion in the width direction, includes a cylindrical portion extending along the width direction, and a notch extending from the cylindrical portion to the welded portion is formed.

[0003] It is said that the above bag can be installed with the opening open by inserting a rod body through each cylindrical portion.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the bag as described in Patent Document 1, when trying to put an object such as garbage from the front side with the opening open, there is a case where the object to be put cannot be moved to the back side of the bag above the opening and cannot be put into the bag, and there is a problem that it is difficult to put the object.

[0006] Therefore, an object of the present invention is to provide a bag into which an object can be easily put. [Means for solving the problem]

[0007] The present invention relates to a bag having a pair of sheet-like film portions arranged opposite to each other in the thickness direction, the lower ends and widthwise ends of the pair of film portions connected to each other, and the bag being formed in a bag shape with an opening at the upper end, wherein the opening is located in the middle of the width direction and is provided on each of the pair of film portions and is secured by a locking device, one opening portion extending in the width direction from the handle portion to one end, and the other opening portion extending in the width direction from the handle portion to the other end, wherein the widthwise end of the opening portion is located below the upper end of the handle portion and below the widthwise end of the other opening portion.

[0008] With this configuration, by positioning one opening towards the front and the other towards the back, the opening opens wider vertically downwards compared to the back. Therefore, it is easier to put items into the bag from the front, and the other opening prevents the items being put in from moving to the back of the bag. Thus, it is easier to put items into the bag.

[0009] Furthermore, the opening can be configured such that one side in the width direction is inclined lower than the other side in the width direction.

[0010] With this configuration, by positioning one opening towards the front and the other towards the back, the opening extends further down from the front than from the back. Therefore, it is easier to put items into the bag from the front.

[0011] Furthermore, the other part of the opening may be configured to include a pivot piece that can rotate around an axis perpendicular to the vertical direction relative to the handle.

[0012] With this configuration, the pivot piece can be rotated as needed to change its position relative to the handle. Therefore, the bag can be used in a way that suits the user's needs. [Effects of the Invention]

[0013] According to the present invention, it is possible to obtain a bag that is easy to put things into. [Brief explanation of the drawing]

[0014] [Figure 1] This is a front view showing a bag according to one embodiment of the present invention. [Figure 2] This is a magnified view showing the opening of the bag. [Figure 3] This figure shows the manufacturing method for the bag. [Figure 4] This diagram shows the usage status of the bag. [Figure 5] This diagram shows the usage status of the bag. [Figure 6] A front view showing a bag according to another embodiment of the present invention. [Figure 7] This is a front view showing the bag used as an example. [Modes for carrying out the invention]

[0015] A bag 1 according to one embodiment of the present invention will be described with reference to Figures 1 to 5. For the sake of explanation, the vertical and horizontal directions will be described based on the directions shown in Figure 1, and the direction perpendicular to the vertical and horizontal directions will be described as the thickness direction.

[0016] As shown in Fig. 1, the bag 1 includes a pair of film portions 2 arranged to face each other in the thickness direction. The pair of film portions 2 includes a front film portion 2F arranged on one side in the thickness direction and a back film portion 2R arranged to face the front film portion 2F on the other side in the thickness direction. The front film portion 2F and the back film portion 2R are in the form of sheets extending in the vertical and horizontal directions, and in this embodiment, they have substantially the same shape. Specifically, the front film portion 2F and the back film portion 2R are in the form of sheets with substantially uniform thickness and have deformable flexibility. The front film portion 2F and the back film portion 2R of this embodiment are sheet bodies made of a soft synthetic resin. Further, the bag 1 includes a bag main body portion 11 and an opening portion 12 formed by the front film portion 2F and the back film portion 2R.

[0017] In this embodiment, a tubular film is bent along the axial direction at two positions facing each other in the radial direction to form the front film portion 2F and the back film portion 2R. Specifically, the portion on one side located between a pair of folds 1a formed by bending the tubular film is the front film portion 2F, and the portion on the other side is the back film portion 2R.

[0018] The front film portion 2F and the back film portion 2R are formed into an upper-opening bag shape by connecting their lower ends and both side portions to each other. Specifically, the bag 1 includes a one-side connection portion 21 where the right end portion of the front film portion 2F and the right end portion of the back film portion 2R are connected, an other-side connection portion 22 where the left end portion of the front film portion 2F and the left end portion of the back film portion 2R are connected, and a bottom portion 23 where the lower end portion of the front film portion 2F and the lower end portion of the back film portion 2R are connected.

[0019] The right end portions and the left end portions of the front film portion 2F and the back film portion 2R are connected via the fold 1a. That is, the one-side connection portion 21 is the fold 1a located on the right side, and the other-side connection portion 22 is the fold 1a located on the left side. The fold 1a extends linearly continuously from the upper end to the lower end of the right end portion and the left end portion along the vertical direction.

[0020] Further, the lower ends of the front film portion 2F and the back film portion 2R are connected and joined together by heat welding. Specifically, the bottom portion 23 includes a welding portion 24 formed by heat welding and linearly extending along the left-right direction, and the back surface of the front film portion 2F and the front surface of the back film portion 2R are connected by the welding portion 24. In this embodiment, the bottom portion 23 includes two welding portions 24 spaced apart in the up-down direction. Specifically, in this embodiment, the lower welding portion 24 is formed by heat cutting, and the upper welding portion 24 is formed by heat sealing. Also, between the welding portions 24, the front film portion 2F and the back film portion 2R are not welded. In the welding portion 24, the two film portions 2 are in an overlapping state, so it is harder and less likely to deform compared to other portions. Note that the configuration is not limited to this, and for example, the bottom portion 23 may be configured to include only one welding portion 24. In such a configuration, the welding portion 24 can be formed by heat sealing or heat cutting.

[0021] Such a pair of film portions 2 form a bag body portion 11 for accommodating an object and an opening portion 12. The bag body portion 11 is located in the range from the lower end portion to the middle portion in the up-down direction. The opening portion 12 is located in the range from the upper end of the bag body portion 11 to the upper ends of the pair of film portions 2 in the up-down direction.

[0022] The bag body portion 11 is formed in an upper-opening bag shape by connecting the lower ends and both side portions of the front film portion 2F and the back film portion 2R to each other, and objects can be put in and taken out from the upper opening. Also, the bag body portion 11 of this embodiment does not have margins provided at the bottom portion 23 and both side portions.

[0023] As shown in FIG. 2, the opening portion 12 is provided so as to extend upward from the upper end portion of the bag body portion 11. Specifically, the opening portion 12 includes a handle portion 3 located at the middle portion in the left-right direction, an opening one-side portion 4 extending from the handle portion 3 to the right end portion, and an opening other-side portion 5 extending from the handle portion 3 to the left end portion.

[0024] The handle portion 3 is an extension piece provided in each of the pair of film portions 2 so as to extend upward from the bag body portion 11, and a pair of handle portions 3 are provided so as to face each other in the thickness direction. In other words, the pair of handle portions 3 includes a handle portion 3 located on the front side and a handle portion 3 located on the back side. Specifically, the handle portion 3 comprises a handle body portion 31, which is an extension piece positioned to the left of the center in the left-right direction, and a locking piece 32 connected to the handle body portion 31. The handle body portion 31 is sheet-like and extends in the vertical and left-right directions. For example, the handle portion 3 can also be configured to be positioned in the center in the left-right direction, or to be positioned to the right. In this embodiment, since the handle portion 3 is positioned to the left, the width of one opening portion 4 in the left-right direction can be made wider. Therefore, when in use, one opening portion 4 can be opened wide.

[0025] The locking piece 32 is a piece-shaped body located in the middle of the width direction of the handle body 31. The locking piece 32 is formed by separating a portion of the handle body 31. Specifically, the locking piece 32 comprises a connecting outer edge 33, which is the outer edge portion connected to the handle body 31, and a detached outer edge 34, which is the outer edge portion separated from the handle body 31. The locking piece 32 is the portion surrounded by the detached outer edge 34. Furthermore, of the outer edge portion of the locking piece 32, more than half is the detached outer edge 34, and the remaining portion is the connecting outer edge 33. The locking piece 32 is rotatable around the connecting outer edge 33 as its axis, in a direction in which the detached outer edge 34 moves toward and away from the handle body 31.

[0026] The handle body portion 31 has a locking hole 3a that penetrates in the thickness direction and into which a locking device can be locked. The locking hole 3a is formed when the cut outer edge 34 of the locking piece 32 separates from the handle body portion 31. In this way, the locking hole 3a can be formed while the locking piece 32 and the handle body portion 31 remain connected, so the locking hole 3a can be formed without removing the locking piece 32. Therefore, for example, there is no need to include a step to remove the locking piece 32 during manufacturing, making it easier to manufacture the bag 1. By inserting a hook, for example, which is a locking device placed on a wall, through the locking hole 3a, the locking device can be locked to the handle portion 3.

[0027] The opening portion 4 is a part that extends continuously from the right end of the handle portion 3 to the upper end of the one-side connecting portion 21. Specifically, the opening portion 4 is located at the upper end and includes a one-side upper edge 41 that extends continuously from the right end of the handle portion 3 to the upper end of the one-side connecting portion 21. The one-side upper edge 41 extends smoothly from the right end of the handle portion 3 to the upper end of the one-side connecting portion 21 without any protrusions or steps. Furthermore, the one-side upper edge 41 is inclined in the vertical direction such that the right side is positioned lower than the left side. In this embodiment, the one-side upper edge 41 is curved so as to be convex to the lower left.

[0028] The other opening portion 5 is the portion located from the left end of the handle portion 3 to the other side connecting portion 22. Specifically, the one opening portion 4 is provided with a piece-shaped rotating piece 51 located at the left end. A notch 52 is formed between the rotating piece 51 and the handle portion 3. The notch 52 is a recessed portion formed between the handle portion 3 and the rotating piece 51, which is concave downwards. Specifically, the notch 52 has a curved shape with its lower end convex downwards. The notch 52 is formed between the front handle portion 3 and the rotating piece 51, and between the back handle portion 3 and the rotating piece 51, respectively.

[0029] The rotating piece 51 is a rectangular piece extending upward from the bag body 11. Specifically, the rotating piece 51 is a piece with substantially constant length and width in the vertical direction, and its upper end extends linearly in the left-right direction. The rotating piece 51 is provided to extend from the front film portion 2F to the back film portion 2R, and the front film portion 2F and the back film portion 2R are connected at the left end of the rotating piece 51. In other words, the rotating piece 51 is a single piece that extends from the front film portion 2F to the back film portion 2R between the pair of handle portions 3. In this embodiment, the other side connection portion 22 is located in the middle of the rotating piece 51, and the rotating piece 51 is positioned so as to straddle the other side connection portion 22. In other words, a fold 1a extending in the vertical direction is formed on the rotating piece 51.

[0030] Furthermore, the rotating piece 51 is rotatable around an axis extending perpendicular to the vertical direction at its lower end. In this embodiment, the rotating piece 51 is rotatable around an axis extending from the lower end of the notch 52 formed between the front handle portion 3 and the rotating piece 51 to the lower end of the notch 52 formed between the back handle portion 3 and the rotating piece 51. By rotating, the rotating piece 51 can switch between an upright state 5A in which the entire rotating piece 51 extends along the vertical direction, and a collapsed state 5B (see Figure 5) in which the entire rotating piece 51 is tilted relative to the vertical direction.

[0031] In the vertical direction, the upper end portion of the rotating piece 51 and the upper end portion of the handle 3 are located at approximately the same position. Furthermore, the upper end portion of the rotating piece 51 is located above the upper end portion of the locking hole 3a. In addition, the upper end portion of the rotating piece 51 is located above the upper end portion of one opening 4, and the right end portion of one opening 4 is located above the left end portion of the other opening 5. In this embodiment, in the vertical direction, the entire other opening 5 is located above the right end portion of one opening 4.

[0032] In the vertical direction, the lower end of the notch 52, the lower end of the rotating piece 51, and the lower end of the handle portion 3 are located at approximately the same position. Also, the lower end of the locking hole 3a is located at approximately the same position as the lower end of the notch 52 in the vertical direction. Furthermore, the lower end of the notch 52 is located above the lower end of the opening portion 4. In this embodiment, the distance L1 from the upper end of the handle portion 3 to the lower end of the notch 52 is shorter than the vertical distance L2 from the upper end of the handle portion 3 to the right end of the opening portion 4. Also, the vertical distance L2 from the upper end of the handle portion 3 to the right end of the opening portion 4 is shorter than 1.5 times the distance L1 from the upper end of the handle portion 3 to the lower end of the notch 52.

[0033] Next, with reference to Figure 3, the manufacturing method of the bag 1 of this embodiment will be described.

[0034] As shown in Figure 3, the bag 1 is formed by, for example, folding a cylindrical film 6, formed by the inflation method, along the axial direction at two radially opposing points to form a front film portion 2F and a back film portion 2R. The cylindrical film is then cut at two points spaced apart in the axial direction (positions indicated by thin dashed lines) and one side of the cut points is heat-sealed to form the bag 1. In this embodiment, one side in the axial direction is heat-cut in a straight line perpendicular to the axial direction, and a point spaced apart from the cut point towards the other end in the axial direction (position indicated by a thick dashed line) is heat-sealed so as to extend approximately parallel to the cutting direction. This heat cutting and heat sealing forms two welded portions 24 at the bottom portion 23. On the other side in the axial direction, it is cut to a shape that conforms to the upper end of the opening 12, and a portion corresponding to the cut outer edge 34 of the locking piece 32 is cut. Furthermore, when cutting on the other side in the axial direction, the film portion 2 is cut without applying heat, and the front film portion 2F and the back film portion 2R are not heat-sealed. It is also possible to form only one welded portion 24 when forming the bottom portion 23. In such cases, for example, the cutting is performed without applying heat to both one side and the other side of the cutting location.

[0035] The usage of bag 1 as described above will be explained with reference to Figures 4 and 5. Bag 1 can be used, for example, as a garbage bag for putting in physical waste, but it is not limited to this, and can also be used to store various items, such as food being cooked.

[0036] As shown in Figures 4 and 5, the bag 1 is used by fastening the handle portion 3 to a locking device (not shown) such as a hook, with the right side facing the front and the left side facing the back. Specifically, a pair of locking devices are positioned so as to be spaced apart horizontally, with the front handle portion 3 being fastened to one locking device and the back handle portion 3 being fastened to the other locking device. As a result, the front film portion 2F and the back film portion 2R are spaced apart in the direction of the separation of the pair of locking devices, and the opening 12 opens in the direction of the separation of the pair of locking devices. In addition, the welded portion 24 of the bottom portion 23 extends in the depth direction, so the right end and the left end can maintain their spaced-apart state in the depth direction by using the welded portion 24 as a support. Therefore, the opening 12 can be made wide open horizontally.

[0037] Here, since the right end of one opening section 4 is located lower than the left end of the other opening section 5, the opening is wide open vertically on the front side. Therefore, it is easy to put items into the bag 1 from the front. Furthermore, since the back side of the opening extends higher than the front side, the item being put in can be received at the back and placed into the bag 1.

[0038] Furthermore, the upper edge 41 on one side of the opening portion 4 extends smoothly from the right end of the handle portion 3 to the upper end of the connecting portion 21 on one side without any protrusions or steps, thus preventing items from getting caught on protrusions or steps and making it difficult to put them into the bag 1. In addition, the upper edge 41 on one side is inclined in the vertical direction so that the right side is lower than the left side, so that the opening extends further down on the front side than on the back side. Therefore, it is easy to put items into the bag 1 from the front side.

[0039] Furthermore, since the rotating piece 51 has a fold 1a that extends in the vertical direction, the fold 1a makes it easier for the entire rotating piece 51 to maintain an upright position 5A. Therefore, it is easier to receive the object being put in at the back. For example, when the bag 1 is placed along a wall, the rotating piece 51 can be propped against the wall to maintain an upright position 5A. Alternatively, the rotating piece 51 can be attracted to the wall by static electricity or the like to maintain an upright position 5A. Also, for example, when no object is being put into the bag 1, the rotating piece 51 can be lowered to a floppy position 5B, covering the top of the opening, thereby preventing foreign matter from entering the bag 1 and preventing the contents of the bag 1 from falling out of the opening. In addition, when the rotating piece 51 covers the top of the opening, the contents of the bag 1 can be hidden by the rotating piece 51. In this way, the position of the rotating piece 51 can be changed according to the circumstances of use.

[0040] As described above, with the bag 1 according to this embodiment, by positioning one opening portion 4 towards the front and the other opening portion 5 towards the back and opening the opening 12, the front side opens wider downwards in the vertical direction compared to the back side. Therefore, it is easy to put items into the bag 1 from the front, and the other opening portion 5 prevents the item being put in from moving to the back of the bag 1. Thus, it is easy to put items into the bag 1.

[0041] Although embodiments of the present invention have been described above with reference to one example, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0042] For example, although the bag 1 was described as a case where no gussets are formed on both sides and the bottom 23, it is not limited to this configuration, and a configuration in which gussets are formed is also possible. Even with such a configuration, it is easy to put items into the bag 1 due to the difference in vertical position between the front and back sides of the opening 12.

[0043] Furthermore, although the front film portion 2F and back film portion 2R of bag 1 were described using the example of being formed by folding a single tubular film, the configuration is not limited to this. For example, a configuration in which the front film portion 2F and back film portion 2R are formed by welding two raw material sheets together can also be adopted. In such a configuration, both sides and the bottom 23 of bag 1 are formed by heat welding.

[0044] Furthermore, although the explanation described an example in which a locking hole 3a is formed in the handle portion 3 and a hook or the like is locked into the locking hole 3a, the configuration is not limited to this. For example, the handle portion 3 may not have a locking hole 3a, and the handle portion 3 may be attached to a wall or the like with a magnet as a locking device, or a clip or the like may be locked to the handle portion 3.

[0045] Furthermore, although the description has been given as an example where the other opening portion 5 is equipped with a pivot piece 51 and a notch 52 is formed between the pivot piece 51 and the handle portion 3, the configuration is not limited to this. For example, a configuration in which the notch 52 is not formed is also possible. In addition, the entire other opening portion 5 can be configured not to rotate around an axis extending horizontally with respect to the handle portion 3.

[0046] Furthermore, although the explanation described an example where the upper end of the other opening section 5 is located at approximately the same vertical position as the upper end of the handle section 3, the configuration is not limited to this, and it is also possible to have a configuration where the upper end of the other opening section 5 is located below the handle section 3. Even with such a configuration, if the left end of the other opening section 5 is located above the right end of the one opening section 4, the other opening section 5 can receive items being inserted from the front at the back, making it easier to put items into the bag 1.

[0047] Furthermore, although the case where the upper edge 41 on one side of the opening portion 4 is curved has been described, the configuration is not limited to this, and for example, it can be configured to extend in a straight line, as shown in Figure 6. Also, even in a configuration that extends in a straight line, as shown in Figure 6, it is not limited to the case where it extends in an oblique direction, but can be configured by combining a part that extends along the vertical direction and a part that extends in the horizontal direction.

[0048] Furthermore, although we have described the case where the upper edge 41 on one side of the opening portion 4 is inclined so that the right end is located at the lowest point, the configuration is not limited to this. For example, the opening portion 4 can be configured so that the right side is positioned upward from the middle portion in the left-right direction to the right end. In such a configuration, it is possible to prevent the contents from falling out of the bag 1 in the inclined portion where the right side is positioned upward. In particular, for example, when the bag 1 has a gusset on the side or when the left-right length of the bag 1 is long, the opening portion 4 may sag, making it easier for the contents to fall out. Even in such cases, it is possible to prevent the contents from falling out of the bag 1 in the inclined portion where the right side is positioned upward, making the bag 1 easier to use.

[0049] Next, a reference example of bag 1 shown in Figure 7 will be described. The reference example of bag 1 differs from the embodiments described above in that one opening portion 4 and the other opening portion 5 have a symmetrical shape, and the right end of the opening portion 4 and the left end of the other opening portion 5 are located at approximately the same position in the vertical direction. Furthermore, the reference example of bag 1 differs from the embodiments described above in that it does not have a locking piece 32, and the entire portion corresponding to the locking hole 3a is cut out.

[0050] Bag 1 in this example is less user-friendly than Bag 1 in each of the above embodiments because the contents tend to move to the back of Bag 1, making it difficult to put things in. On the other hand, by locking the front film portion 2F and the back film portion 2R apart with a fastener, the opening 12 opens in the direction of separation of the pair of fasteners, and the welded portion 24 of the bottom 23 extends in the depth direction. As a result, the right end and the left end can be kept separated in the depth direction with the welded portion 24 as a support. Therefore, the opening 12 can be opened wide in the horizontal direction, making it easy to put things into Bag 1. [Explanation of Symbols]

[0051] 1...Bag, 1a...Fold, 11...Bag body, 12...Opening, 2...Film part, 2F...Front film part, 2R...Back film part, 21...One side connection part, 22...Other side connection part, 23...Bottom, 24...Welded part, 3...Handle part, 3a...Locking hole, 31...Handle body part, 32...Locking piece, 33...Connecting outer edge, 34...Cut-off outer edge, 4...One side of opening, 41...One side upper edge, 5...Other side of opening, 5A...Upright state, 5B...Lying state, 51...Rotating piece, 52...Notch, 6...Cylindrical film

Claims

1. A bag formed in the shape of a bag having a pair of sheet-like film sections arranged opposite each other in the thickness direction, the lower ends and both ends in the width direction of the pair of film sections connected to each other, and an opening at the upper end, The aforementioned opening is A handle portion is located in the middle of the width direction and is provided on each of the pair of film portions, and is secured by a locking device, An opening portion extending in the width direction from the handle portion to one end, It comprises an opening that extends in the width direction from the handle portion to the other end, A bag in which one end of the opening in the width direction is located below the upper end of the handle and below the other end of the other opening in the width direction.

2. The bag according to claim 1, wherein one of the opening portions is inclined such that one side in the width direction is located lower than the other side in the width direction.

3. The bag according to claim 1, wherein the other opening portion is provided with a rotatable piece that can rotate around an axis perpendicular to the vertical direction with respect to the handle portion.

Images