Collection bag manufacturing method

Abstract

To provide a method for manufacturing a collection bag capable of mass-producing a collection bag having excellent functionality, which can be easily attached to and detached from a collection bag support and can be easily detached from the collection bag support by simply closing an opening after collection of a collection object. [Solution] This includes a string insertion portion forming step of folding back a folded piece formed on the upper edge side of a square-shaped sheet material (20) when viewed from the front, towards the front side of the sheet material (20), and joining a central portion of the height of the folded piece (19) to the sheet material (20) parallel to the upper edge of the sheet material (20) to form a string insertion portion (15); a support frame attachment portion forming step of joining a lower end portion of the folded piece (19) to the sheet material (20) parallel to the upper edge of the sheet material (20) to form a support frame attachment portion (17); a bag forming step of folding the sheet material (20) in half at the widthwise center with the back side facing inward, overlapping and joining the left and right edges of the sheet material (20) and joining the lower edge portion of the folded sheet material (20) to form a bag body (13); and a string insertion step of inserting a string (14) through the string insertion portion (15).

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing collection bags used mainly for collecting objects to be collected, such as dog droppings. [Background technology]

[0002] Conventionally, when walking a dog, owners carry a plastic bag and a collection tool such as a shovel, tongs, or disposable chopsticks, and use the tool to transfer the dog's feces into the plastic bag. However, collecting the feces is time-consuming, and some feces may remain behind if not completely collected with the collection tool, and the owner's hands may get dirty during the collection process. Therefore, various tools have been proposed to reduce the effort required for collection work. For example, Patent Document 1 discloses a feces collection bag in which a belt-shaped member is inserted into a circular passage formed along the edge of the opening of the bag to hold the opening of the bag. Furthermore, Patent Documents 2 to 4 disclose collection tools having a ring-shaped support frame at the tip of a handle to which a collection bag can be detachably attached. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-092399 [Patent Document 2] Japanese Patent Application Publication No. 7-46946 [Patent Document 3] Utility Model Registration No. 3089618 [Patent Document 4] Utility Model Registration No. 3172693 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, the opening of the bag can be held in place by a strip-shaped member attached along the edge of the opening, and after the feces have fallen into the bag, the opening can be easily closed by pulling the end of the strip-shaped member. However, because the bag must be placed on the ground in advance to match the position where the feces will fall, there is a problem that the bag may be misaligned, causing the feces to stick to the outer surface of the bag or fall to the ground, making it insecure. In addition, there is a problem that the outer surface of the bag placed on the ground may get wet with rainwater or become dirty with garbage, making it unsanitary. In contrast, in Patent Documents 2 to 4, the collection bag is attached to a support frame provided at the tip of the handle, so the owner can smoothly collect feces by moving the handle to align it. However, the collection bag used is a general plastic bag, and it is necessary to fold the periphery of the opening outward, hook it onto the ring-shaped support frame, and secure it with a clip or band, etc., which makes it difficult to attach and remove. Furthermore, in the case of bags without a belt-shaped member like those in Patent Document 1, the owner must remove the bag from the support frame and then tie the top end of the bag with their hands to close the opening, which is time-consuming and may get their hands dirty.

[0005] The present invention has been made in consideration of the above circumstances, and aims to provide a method for manufacturing collection bags that can mass-produce highly functional collection bags that are easy to attach and detach to a collection bag support, and that can be easily removed from the collection bag support by simply closing the opening after the items to be collected have been collected. [Means for solving the problem]

[0006] A first invention for achieving the above object is a method for manufacturing a collection bag having a bag body with an opening formed at the upper end thereof, a string insertion portion through which a string is inserted to close the opening by squeezing it like a drawstring after collection of the collection object, and a support frame attachment portion formed below the opening of the bag body and detachably attached to a support frame of a collection bag support, The method includes a string insertion portion forming step of folding a folded piece formed on the upper edge side of a rectangular sheet material in a front view back to the front surface of the sheet material and joining a heightwise central portion of the folded piece to the sheet material parallel to the upper edge of the sheet material to form the string insertion portion; a support frame attachment portion forming step of joining a lower end portion of the folded piece to the sheet material parallel to the upper edge of the sheet material to form the support frame attachment portion; a bag forming step of folding the sheet material in half at the widthwise central portion with the back surface facing inward, overlapping and joining the left and right edge portions of the sheet material and joining the lower edge portion of the folded sheet material to form the bag; and a string insertion step of inserting the string into the string insertion portion.

[0007] In the method for producing a collection bag according to the first aspect of the present invention, gussets can be formed on one or both sides of the bag in the width direction in the bag body forming step.

[0008] A second invention for achieving the above object is a method for manufacturing a collection bag having a bag body with an opening formed at the upper end thereof, a string insertion portion through which a string is inserted to close the opening by squeezing it like a drawstring after collection of the collection object, and a support frame attachment portion formed below the opening of the bag body and detachably attached to a support frame of a collection bag support, The method includes a fold-back portion forming step of forming a fold-back portion on the upper side of the bag body, which is rectangular in front view; a string insertion portion forming step of folding the fold-back portion toward the surface of the bag body and joining a center portion of the fold-back portion in the height direction to the bag body parallel to the upper side of the bag body to form the string insertion portion; a support frame attachment portion forming step of joining a lower end portion of the fold-back portion to the bag body parallel to the upper side of the bag body to form the support frame attachment portion; and a string insertion step of inserting the string into the string insertion portion.

[0009] The method for producing a collection bag according to the first and second aspects of the present invention may further include a reinforcing step of reinforcing one or both longitudinal end portions of the support frame attachment portion. [Effects of the Invention]

[0010] The method for manufacturing a collection bag according to the first aspect of the present invention makes it possible to easily manufacture a highly functional collection bag having a string insertion portion and a support frame attachment portion from a single sheet material, and is therefore suitable for mass production.

[0011] In the method for manufacturing collection bags according to the first invention, if gussets are formed on one or both sides of the width of the bag body during the bag body forming process, collection bags with excellent shape stability can be manufactured, allowing for smooth collection of collection items.

[0012] The method for manufacturing collection bags according to the second invention allows for easy production of highly functional collection bags having a string insertion portion and a support frame attachment portion by processing an existing bag body, and is suitable for mass production.

[0013] In the collection bag manufacturing method of the first and second inventions, if a reinforcing step is included to reinforce one or both longitudinal end portions of the support frame mounting portion, a collection bag with excellent durability and shape stability of the support frame mounting portion can be manufactured. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a front view of a collection bag manufactured by a collection bag manufacturing method according to a first embodiment of the present invention. [Figure 2] 1A is a plan view showing a state in which a collection bag manufactured by the same collection bag manufacturing method is used, and FIG. 1B is a front view showing a state in which a collection bag manufactured by the same collection bag manufacturing method is used. [Figure 3] FIG. 3 is a front view of a sheet material used in the method for manufacturing the collection bag. [Figure 4] FIG. 10 is a front view showing a reinforcing step in the method of manufacturing the collection bag. [Figure 5] 10 is a front view showing a string insertion portion forming step in the method of manufacturing the collection bag. FIG. [Figure 6] 10(A) is a front view showing the support frame mounting part forming step in the method for producing the collection bag, and FIG. 10(B) is a side view showing the support frame mounting part forming step in the method for producing the collection bag. [Figure 7]FIG. 10 is a front view showing a bag forming step in the method of manufacturing the collection bag. [Figure 8] FIG. 10 is a front view showing a folded portion forming step in a collection bag manufacturing method according to a second embodiment of the present invention. [Figure 9] 10 is a front view showing a string insertion portion forming step and a support frame attachment portion forming step in the method of manufacturing the collection bag. FIG. [Figure 10] FIG. 2 is a front view of a collection bag manufactured by the collection bag manufacturing method. DETAILED DESCRIPTION OF THE INVENTION

[0015] Next, with reference to the accompanying drawings, embodiments embodying the present invention will be described to aid in understanding the present invention. The collection bag 10 of Figure 1, manufactured by the collection bag manufacturing method of the first embodiment of the present invention, is attached to a collection bag support 11 as shown in Figures 2(A) and (B) and is used to collect objects to be collected, such as dog feces. 1 and 2(A) and (B), the collection bag 10 has a bag body 13 with an opening 12 formed at the upper end thereof, and a string insertion portion 15 through which a string 14 is inserted to draw the opening 12 closed like a drawstring after the collection of the collection object. The collection bag 10 also has a support frame attachment portion 17 formed below the opening 12 of the bag body 13 and removably attached to the ring-shaped support frame 16 of the collection bag support device 11.

[0016] In the method for manufacturing a collection bag according to the first embodiment of the present invention, first, as shown in FIG. 3, a sheet material 20 having a rectangular shape in front view and a folded piece 19 formed on its upper edge is prepared. The sheet material 20 having the folded piece 19 can be easily manufactured by punching (pressing). The folded piece 19 has a cord insertion portion forming portion 21 and a support frame attachment portion forming portion 22. A support frame attachment portion reinforcement portion 23 is formed on one longitudinal side (the right side in FIG. 3) of the support frame attachment portion forming portion 22. The lower end of this support frame attachment portion reinforcement portion 23 is cut along a cutting portion 24, and as shown in FIG. 4, the support frame attachment portion reinforcement portion 23 can be folded back and joined (welded) to the front side of the sheet material 20 so that the support frame attachment portion reinforcement portion 23 overlaps one end of the support frame attachment portion forming portion 22. This reinforces one longitudinal end of the support frame attachment portion 17, which will be formed in a subsequent process. In this embodiment, only one longitudinal end portion of support frame mounting portion 17, which is the entrance of support frame 16 inserted into support frame mounting portion 17, is reinforced, but the other longitudinal end portion of support frame mounting portion 17, which is the exit of support frame 16, can also be reinforced in a similar manner. Also, in this embodiment, a part of sheet material 20 is used to form support frame mounting portion reinforcement portion 23 integrally with folded piece 19, but instead of forming support frame mounting portion reinforcement portion 23 in folded piece 19, a reinforcing sheet may be separately created and attached to support frame mounting portion formation portion 22 (this is the reinforcing step).

[0017] Next, as shown in FIG. 5, the folded piece 19 is folded back onto the front surface of the sheet material 20, and the central part of the folded piece 19 in the height direction (the hatched part in FIG. 5) is joined to the sheet material 20 parallel to the upper edge of the sheet material 20 to form the string insertion part 15 (this is the string insertion part forming process). Next, as shown in Fig. 6(A), the lower end of the folded piece 19 (the hatched portion in Fig. 6(A)) is joined to the sheet material 20 parallel to the upper edge of the sheet material 20 to form the support frame mounting portion 17. At this time, taking into consideration the thickness of the support frame 16 to be inserted into the support frame mounting portion 17, the support frame mounting portion forming portion 22 is bulged outward as shown in Fig. 6(B), thereby allowing the support frame 16 to be smoothly inserted into the support frame mounting portion 17 (this is the support frame mounting portion forming step).

[0018] 7, the sheet material 20 is folded in half at the center in the width direction with the back surface facing inward, and the left and right sides of the sheet material 20 are overlapped and joined, and the bottom side of the folded sheet material 20 is joined to form the bag body 13. At this time, by forming a gusset 26 on one side in the width direction of the bag body 13 (the left side in FIG. 7), the bottom end side of the bag body 13 can easily expand during use, allowing the collection target to be collected smoothly. In this embodiment, the gusset 26 is formed by folding the lower portion of one widthwise side of the bag body 13 diagonally inward of the bag body 13, but the method of forming the gusset is not limited to this and may be selected as appropriate. Also, in this embodiment, the gusset is formed only on one widthwise side of the bag body 13, but the gusset may be formed on both widthwise sides of the bag body 13 (this is the bag body forming process).

[0019] Finally, the collection bag 10 shown in Fig. 1 is completed by inserting the string 14 into the string insertion section 15. By pulling the operating section 27 of the string 14, which is attached in a loop along the string insertion section 15, the opening 12 can be squeezed and closed like a purse (this is the string insertion step). The method for manufacturing a collection bag has been described above, but it is not necessary for all steps to be performed in the order described above, and the order of the steps may be changed as long as the collection bag 10 can be manufactured. The reinforcing step is not essential and may be omitted. Furthermore, forming the gusset 26 in the bag body forming step is not essential and may be omitted.

[0020] As shown in FIGS. 2(A) and 2(B), the collection bag 10 manufactured as described above can be attached to the collection bag support device 11 with the opening 12 widened by inserting the support frame 16 of the collection bag support device 11 into the support frame attachment portion 17 and hooking the operating portion 27 of the string 14 onto the hook portion 29 on the handle 28 of the collection bag support device 11. The user can grasp the handle 28 of the collection bag support device 11 with their hand to support the collection bag 10, aligning it with the position where the objects to be collected will fall, and can reliably drop the objects into the collection bag 10 for collection. After collecting the objects to be collected, the user can close the opening 12 by removing the operating portion 27 of the string 14 from the hook portion 29 and pulling it toward the tip of the handle 28. The user can then slide the support frame attachment portion 17 along the support frame 16 and remove it from the support frame 16 by moving the operating portion 27 along the support frame 16. Therefore, the user can easily remove the collection bag 10 from the collection bag holder 11 without directly touching the collection bag 10 with his or her hands, which is hygienic.

[0021] Next, a method for manufacturing a collection bag according to a second embodiment of the present invention will be described. Note that the same components as those in the first embodiment will be given the same reference numerals and descriptions thereof will be omitted. In the method for manufacturing a collection bag according to the second embodiment of the present invention, first, as shown in Figure 8, a bag body 13 having a square shape when viewed from the front and an opening 12 formed at the top end is prepared, and a folded portion 30 is formed on the top side of the bag body 13. The folded portion 30 is formed by removing unnecessary portions on the top side of the bag body 13 by press working (punching) or the like (this is the folded portion forming process).

[0022] Next, as shown in Figure 9, the folded portion 30 is folded back onto the surface side of the bag body 13, and the central part in the height direction of the folded portion 30 (the upper hatched part) is joined to the bag body 13 parallel to the upper edge of the bag body 13 to form the string insertion portion 15 (this is the string insertion portion forming process), and then the lower end part (the lower hatched part) of the folded portion 30 is joined to the bag body 13 parallel to the upper edge of the bag body 13 to form the support frame attachment portion 17 (this is the support frame attachment portion forming process). Finally, the string 14 is threaded through the string threading section 15, thereby completing the collection bag 10A shown in FIG.

[0023] The method for manufacturing a collection bag according to the second embodiment differs from that of the first embodiment in that collection bag 10A is manufactured using bag body 13 instead of a single sheet material 20. As a result, the second embodiment does not require a bag body forming step. In this case, it is not possible to form gusset 26 later as with collection bag 10, but collection bag 10A can also be manufactured using a bag body that has a gusset from the beginning. Although the reinforcing step is omitted in the second embodiment, the support frame mounting portion 17 can be reinforced by carrying out the reinforcing step in the same manner as in the first embodiment.

[0024] The above describes an embodiment of the present invention, but the present invention is not limited to the configurations described in the above embodiment, and also includes other embodiments and modifications that are possible within the scope of the matters described in the claims. In each joining step, welding (thermal welding) is preferably used, but for example, an adhesive layer (sticky layer) may be formed at the joining location to bond the members together. The sheet material and the bag body are preferably made of polyethylene and polypropylene, but are not limited to these and may be made of any suitable material. The collection bag manufactured by the method for manufacturing a collection bag of the present invention can be used for harvesting not only dog ​​feces but also, for example, fruit and the like. [Explanation of symbols]

[0025] 10, 10A: collection bag, 11: collection bag support, 12: opening, 13: bag body, 14: string body, 15: string body insertion part, 16: support frame, 17: support frame attachment part, 19: folding piece, 20: sheet material, 21: string body insertion part forming part, 22: support frame attachment part forming part, 23: support frame attachment part reinforcement part, 24: cutting part, 26: gusset, 27: operation part, 28: handle, 29: hook part, 30: folding part

Claims

1. A method for manufacturing a collection bag having a bag body with an opening formed on an upper end side, a string insertion portion through which a string is inserted to close the opening by squeezing it like a drawstring after collection of the collection object, and a support frame attachment portion formed below the opening of the bag body and removably attached to a support frame of a collection bag support, comprising: a support frame attachment portion forming step of joining a lower end of the folded piece to the sheet material parallel to the upper edge of the sheet material to form the support frame attachment portion; a bag forming step of folding the sheet material in half at the widthwise center with the back side facing inward, overlapping and joining the left and right edges of the sheet material, and joining the lower edge of the folded sheet material to form the bag body; and a string insertion step of inserting the string through the string insertion portion.

2. 2. The method for producing a collection bag according to claim 1, wherein in the bag forming step, gussets are formed on one or both sides of the bag in the width direction.

3. A method for manufacturing a collection bag having a bag body with an opening formed on an upper end side, a string insertion portion through which a string is inserted to close the opening by squeezing it like a drawstring after collection of the collection object, and a support frame attachment portion formed below the opening of the bag body and removably attached to a support frame of a collection bag support, comprising: a string insertion portion forming step of folding the folded portion toward the front surface of the bag body and joining the height direction central portion of the folded portion to the bag body parallel to the upper side of the bag body to form the string insertion portion; a support frame attachment portion forming step of joining the lower end portion of the folded portion to the bag body parallel to the upper side of the bag body to form the support frame attachment portion; and a string insertion step of inserting the string into the string insertion portion.

4. 4. The method for producing a collection bag according to claim 1, further comprising a reinforcing step of reinforcing one or both longitudinal end portions of the support frame mounting portion.

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