Disposable drainer and method for manufacturing the same

Abstract

This invention provides a disposable draining device and manufacturing method that eliminates the need for a separate process of attaching a string to the draining section, resulting in superior productivity and significantly lower costs compared to conventional technologies. [Solution] The drainer comprises a bottomed cylindrical drain section 10, an expandable section 20 provided around its entire circumference at its open end 11, and an annular string section 30 provided at its open end 21. The expandable section 20 is fitted over the opening edge of the drain's waste receptacle, thereby inserting the drain section 10 into the waste receptacle. The drain section 10 captures foreign matter flowing into the waste receptacle along with the wastewater and allows the wastewater to pass through. The string section 30 is pulled up, causing the expandable section 20 to detach from the opening edge of the waste receptacle, and the drain section 10, containing the foreign matter, to be removed from the waste receptacle. The expandable section 20 is connected to the open end 11 of the drain section 10, and the string section 30 is connected to the open end 21 of the expandable section 20 via a portion 40.

Description

Technical Field

[0001] The present invention relates to a disposable water strainer suitable for being set in a garbage receptacle such as a drain outlet of a kitchen sink or a drain outlet of a bathroom, and for preventing foreign matters such as kitchen waste and hair from flowing out into a drain pipe, and a method for manufacturing the same.

Background Art

[0002] Conventionally, various proposals have been made for this type of water strainer.

[0003] Among others, for example, Patent Document 1 discloses a drain outlet net in which a string is attached to the upper part of the drain outlet net, and the waste disposal work is made simple and hygienic. Further, Patent Document 2 discloses a water strainer bag including a water-permeable bag body and a pair of endless string-like bodies arranged in the bag body, and the bag body is provided so as to contract and its opening is constricted by pulling each string-like body in a predetermined direction by their gripping portions.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, this type of water strainer is discarded together with the foreign matters every time a predetermined amount of foreign matters accumulates in the water strainer part from the viewpoints of simplification of the disposal and replacement work and hygiene, and is not repeatedly used. For this reason, since the consumption number in one household becomes a considerable number, in the market, those packaged in units of about 30 to 100 per bag are sold. From such a situation, cost reduction is required for the water strainer.

[0006] However, in all of the above-mentioned conventional drainers, the string for removing the drain section from the drain strainer was manufactured separately from the drain section and attached to the drain section in a separate process by means of fusion, adhesive, or braiding.

[0007] Thus, the process of attaching the string to the draining part, which is essential for manufacturing draining devices, is difficult to automate from a profitability standpoint because the shape of the draining part and the string are irregular due to the properties of the materials, and therefore has to be done manually, thus hindering cost reduction.

[0008] Furthermore, conventional draining devices have not shown any consideration for increasing the strength of the bottom of the draining section.

[0009] The present invention was made to solve the above problems, and its purpose is to provide a disposable drainer and a method for manufacturing the same that eliminates the need for a separate process of attaching a string to the drainer part, offers excellent productivity, and achieves overwhelmingly lower costs compared to conventional technology.

[0010] Another objective is to provide a draining device with high strength at the bottom of the draining section, and a method for manufacturing the same. [Means for solving the problem]

[0011] To solve the above problems, the draining device disclosed in this application comprises a bottomed cylindrical draining portion and an annular string portion at the open end of the draining portion, wherein the draining portion is inserted into the waste receptacle by having the open end of the draining portion fitted onto the open edge of the waste receptacle of the drain outlet, the draining portion captures foreign matter that flows into the waste receptacle together with the waste and allows the waste to pass through, and the open end of the draining portion is detached from the open edge of the waste receptacle by the string portion being pulled up, and the draining portion is removed from the waste receptacle while containing the foreign matter, wherein the string portion is connected to the open end of the draining portion via a portion.

[0012] The above-mentioned draining device may have a draining section and a string section made of net material or nonwoven fabric.

[0013] Furthermore, the drainer comprises a bottomed cylindrical drain section made of net material, an expandable section made of net material provided around the entire circumference of the open end of the drain section, and an annular string section made of net material provided at the open end of the expandable section, wherein the expandable section is fitted over the open edge of the drain receptacle of the drain outlet, thereby inserting the drain section into the receptacle, the drain section captures foreign matter that flows into the receptacle along with the wastewater and allows the wastewater to pass through, and the string section is pulled up, thereby detaching the expandable section from the open edge of the receptacle and removing the drain section from the receptacle while containing the foreign matter, wherein the expandable section is connected from the open end of the drain section, and the string section may be connected from the open end of the expandable section via a portion of it.

[0014] If the draining portion of the above draining device is made of a net material, the lower part of the draining portion may be made of yarn with excellent water permeability and yarn with higher strength than that yarn, or it may have a double-layered structure.

[0015] Furthermore, the manufacturing method of the disposable drainer disclosed herein comprises a bottomed cylindrical drainer made of net material and an annular string made of net material provided at the open end of the drainer, wherein the open end of the drainer is fitted onto the open edge of the drain strainer of the drain outlet, thereby inserting the drainer into the strainer, the drainer captures foreign matter that flows into the strainer with the wastewater and allows the wastewater to pass through, and when the string is pulled up the open end of the drainer detaches from the open edge of the strainer and the drainer encloses the foreign matter. A method for manufacturing a drainer that is removed from the waste receptacle while remaining in place, comprising: a first string knitting step of knitting a first string into a ring shape; a drainer knitting step of knitting two drainer sections in a continuous cylindrical shape from a part of the other end of the ring-shaped first string knitted in the first string knitting step; a second string knitting step of knitting a second string into a ring shape from the other end of the drainer section knitted in the drainer knitting step; and a drainer partial cutting and closing step of cutting the drainer section in the middle of one end and the other end and closing the cut section.

[0016] Furthermore, the manufacturing method of the disposable drainer disclosed herein comprises a bottomed cylindrical drainer made of net material, an expandable part made of net material provided around the entire circumference of the open end of the drainer, and an annular string made of net material provided at the open end of the expandable part, wherein the expandable part is fitted over the opening edge of the drain receptacle of the drain, thereby inserting the drainer into the receptacle, the drainer captures foreign matter flowing into the receptacle with the wastewater and allows the wastewater to pass through, and the expandable part is detached from the opening edge of the receptacle by the string being pulled up. A method for manufacturing a drainer, wherein the drainer portion is removed from the waste receptacle while containing the foreign matter, comprising: a first string portion knitting step of knitting a first string portion into a ring shape; a first expandable portion knitting step of knitting a first expandable portion into a ring shape continuously from a part of the other end of the first string portion knitted in the first string portion knitting step; a drainer portion knitting step of knitting two drainer portions into a cylindrical shape continuously from the other end of the first expandable portion knitted in the first expandable portion knitting step; a second expandable portion knitting step of knitting a second expandable portion continuously from the other end of the drainer portion knitted in the drainer portion knitting step; a second string portion knitting step of knitting a second string portion into a ring shape continuously from a part of the other end of the second expandable portion knitted in the second expandable portion knitting step; and a drainer portion partial cutting and closing step of cutting the drainer portion in the middle of one end and the other end and closing the cut portion.

[0017] In the manufacturing method of the disposable drainer described above, reinforcing threads may be added between the front and rear of the intermediate section during the draining section knitting process.

[0018] Furthermore, the present invention relates to a method for manufacturing a disposable drainer, comprising a bottomed cylindrical drainer made of net material and an annular string made of net material provided at the open end of the drainer, wherein the open end of the drainer is fitted onto the open edge of the drain strainer of the drain outlet, thereby inserting the drainer into the strainer, the drainer captures foreign matter that flows into the strainer with the wastewater and allows the wastewater to pass through, and the string is pulled up so that the open end of the drainer detaches from the open edge of the strainer and the drainer is removed from the strainer while still containing the foreign matter, wherein the lower part of the drainer is cylindrical The invention is characterized by comprising: a process of forming the lower part of the drainage pipe; a process of forming the cylindrical body formed in the lower part of the drainage pipe in the process of forming the lower part of the drainage pipe in the process of forming the lower part of the drainage pipe in the process of forming the lower part of the drainage pipe in the process of forming the lower part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the upper part of the drainage pipe in the process of forming the lower

[0019] In addition, the manufacturing method of the disposable drainer disclosed in the present application includes a bottomed cylindrical drain part made of a net material, a stretchable part made of a net material provided over the entire circumference at the open end of the drain part, and an annular string part made of a net material provided at the open end of the stretchable part. When the stretchable part is attached to the opening edge of the garbage receptacle of the drain outlet, the drain part is inserted into the garbage receptacle, capturing foreign matter flowing into the garbage receptacle together with the drainage with the drain part and allowing the drainage to pass through. When the string part is pulled up, the stretchable part is detached from the opening edge of the garbage receptacle and the drain part is removed from the garbage receptacle while containing the foreign matter. The manufacturing method of the drainer includes a drain lower part knitting step of knitting the lower part of the drain part into a cylindrical shape, twisting the cylindrical body knitted in the drain lower part knitting step around the axis of the cylindrical body at an intermediate part between one end and the other end to close the intermediate part, and then inverting the other end to the outside of the one end at the intermediate part to make the cylindrical body into a double structure, a closing and doubling step; a drain upper part knitting step of integrating the one end and the other end in a superimposed state at the open end of the drain lower part knitted in the closing and doubling step and knitting the drain upper part into a cylindrical shape from the open end; a stretchable part knitting step of continuously knitting the stretchable part from the open end of the drain upper part knitted in the drain upper part knitting step; and a string part knitting step of continuously knitting the string part into an annular shape from a part of the other end of the stretchable part knitted in the stretchable part knitting step.

Effects of the Invention

[0020] According to the present invention, it is possible to provide a disposable drainer and a manufacturing method that do not require a separate process for attaching a string to the drain part, are excellent in productivity, and can achieve a压倒性 low cost compared to the prior art.

[0021] In addition, it is possible to provide a drainer with high strength at the bottom of the drain part and a manufacturing method thereof.

Brief Description of the Drawings

[0022] [Figure 1] It is a perspective view showing an embodiment of the disposable drainer disclosed in the present application. [Figure 2] It should be noted that the term "圧倒的" in the original text seems to be incorrect. I translated it as "压倒性" based on the context, but it might need to be verified with the original source for the correct expression.FIG. 1 is a schematic cross-sectional view showing a state in which the disposable drainer shown in FIG. 1 is inserted into the garbage receiver of the drain outlet. [Figure 3] FIG. 3 is a schematic process diagram schematically showing an embodiment of a method for manufacturing the disposable drainer disclosed in the present application. [Figure 4] FIG. 4 is a schematic process diagram schematically showing another embodiment of the disposable drainer disclosed in the present application and a method for manufacturing the same. [Figure 5] FIG. 5 is a schematic process diagram schematically showing still another embodiment of the disposable drainer disclosed in the present application and a method for manufacturing the same.

BEST MODE FOR CARRYING OUT THE INVENTION

[0023] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the following embodiments is an example of an embodiment embodying the present invention and does not have a character of limiting the technical scope of the present invention. In addition, the same reference numerals are given to common components in the following description and drawings.

[0024] -Configuration of the drainer- As shown in FIG. 1, the disposable drainer 1 disclosed in the present application includes a bottomed cylindrical draining portion 10, a telescopic portion 20 provided over the entire circumference at the opening end 11 of the draining portion 10, and an annular string portion 30 provided at the opening end 21 of the telescopic portion 20.

[0025] As shown in FIG. 2, in the drainer 1 configured as described above, the draining portion 10 is inserted into the garbage receiver G when the telescopic portion 20 is crowned on the opening edge portion F of the garbage receiver G of the drain outlet. In this state, foreign matters such as kitchen waste that have flowed into the garbage receiver G together with the drainage are captured by the draining portion 10, and only the drainage is allowed to pass through the draining portion 10.

[0026] Continue using the drainer in the manner described above. When a predetermined amount of foreign matter accumulates in the drainer section 10, pulling up the string 30 detaches the telescopic section 20 from the opening edge F of the waste receptacle G, and the opening end 11 of the drainer section 10 is narrowed by the telescopic section 20. This prevents foreign matter from unexpectedly spilling out of the drainer section 10. While holding the string 30 in this state, dispose of the drainer 1 containing the foreign matter, along with the foreign matter, in an appropriate location. In this way, disposal is hygienic because the drainer section 10 and its opening end 11 are not directly touched, and the string 30, which is further away from them, is held. After disposal, insert a new drainer 1 into the waste receptacle G again as described above.

[0027] The draining section 10, the expandable section 20, and the string section 30 of the draining device 1 described above are all made of a net material woven from synthetic fibers. Each part will be described in detail below.

[0028] The drain section 10 is constructed from a knitted fabric made by knitting, for example, a tubular shape using a 20-decitex polyester yarn as a non-elastic yarn, for example, on a circular knitting machine. Here, polyester yarn is suitable for constructing the drain section 10 in terms of heat resistance and acid resistance, and when a 20-decitex polyester yarn is used, a drain section 10 with excellent water permeability can be obtained. The size of the stitches in the drain section 10 is preferably such that it can capture even fine foreign matter while ensuring water permeability. Note that the knitting machine is not limited to a circular knitting machine; a flat knitting machine may also be used.

[0029] The stretchable section 20 is formed at the open end 11 of the drainage section 10 by combining an elastic yarn with an inelastic yarn that is more elastic. As the inelastic yarn, for example, a polyester yarn with a thickness of 20 decitex used in the drainage section 10 can be used along with a false-twist yarn with a thickness of 40 decitex produced by the DTY method, and a polyurethane yarn with a thickness of 130 decitex can be added as the elastic yarn. By using these three types of yarn, the stretchability and strength of the stretchable section 20 can be ensured. Note that the inelastic yarn and elastic yarn are not limited to the examples described above.

[0030] The cord portion 30 is connected to the open end 21 of the expandable portion 20 via a portion 40. Specifically, the expandable portion 20 is knitted using the three types of yarn described above, and when an expandable portion 20 of a predetermined width has been knitted, the knitting operation of the knitting machine is changed so that the expandable portion 20 and the cord portion 30 are discontinuous except for the portion 40, thereby connecting the cord portion 30 to the open end 21 of the expandable portion 20 via the portion 40. The length of the portion 40 to which the expandable portion 20 and the cord portion 30 are connected is set to approximately one-fifth to one-eighth of the opening circumference of the expandable portion 20. If it is longer than this, the cord portion 30 may get tangled around the outer circumference of the drainage tray G when the drainage portion 10 is inserted into the drainage tray G, making it difficult to grasp.

[0031] As explained above, the disposable drainer 1 disclosed in this application can be manufactured in a series of processes using a knitting machine, from the draining section 10 through the expandable section 20 to the string section 30. Therefore, the process of attaching the string section 30, which was previously required, can be eliminated. As a result, productivity is superior compared to conventional methods, and costs can be drastically reduced.

[0032] In the above embodiment, an example was shown in which an expandable portion 20 is provided between the open end of the drainage portion 10 and the cord portion 30, but it is not necessary to provide the expandable portion 20. In that case, the cord portion 30 is connected to the open end 11 of the drainage portion 10 via a portion of it. Specifically, for example, the drainage portion 10 is knitted with a polyester yarn with a thickness of 20 decitex, and when it reaches the open end 11, the cord portion 30 is connected to the open end 11 via a portion of it by adding two types of yarn: a polyurethane yarn with a thickness of 130 decitex and a false-twisted yarn with a thickness of 40 decitex using the DTY method to the polyester yarn with a thickness of 20 decitex.

[0033] Furthermore, the drainer 1 is not limited to being made of yarn as described above, but may also be made of nonwoven fabric, for example, as shown in Figure 5.

[0034] In other words, as shown in Figures 5(a) and (b), the upper end of the base material 50A, which is made of nonwoven fabric formed into a tubular shape, is punched out so that the string portion 30 remains (the punched-out portion is shown by diagonal lines), and as shown in Figure 5(c), the lower end of the base material 50A is narrowed and closed by appropriate means such as adhesive bonding.

[0035] -Manufacturing method for draining devices- (Embodiment 1) Next, an embodiment of the manufacturing method for the draining device 1 described above will be explained with reference to Figure 3. The manufacturing method according to this embodiment is a method for manufacturing two draining devices 1 at once. This will be described in detail below.

[0036] First, as shown in Figure 3(a), a base material 50 in which two drainage sections 10A and 10B are connected, and expandable sections 20A and 20B and cord sections 30A and 30B are attached to the open ends 11A and 11B of each section, is knitted, for example, on a circular knitting machine.

[0037] Specifically, in the first cord knitting process, the first cord 30A is knitted in a ring shape using non-elastic yarn and elastic yarn. As the non-elastic yarn, for example, as described above, two types of non-elastic yarn are used: a polyester yarn with a thickness of 20 decitex and a false-twist yarn processed by the DTY method with a thickness of 40 decitex. As the elastic yarn, a polyurethane yarn with a thickness of 130 decitex is used. The diameter of the cord 30A knitted in a ring shape is the same as the diameter of the stretchable parts 20A, 20B and the drainage parts 10A, 10B.

[0038] Next, in the first stretchable section knitting process, the first stretchable section 20A is knitted using the two types of non-elastic yarn and elastic yarn used in the cord section 30A, starting from a portion 40A at the other end of the annular first cord section 30A knitted in the first cord section knitting process.

[0039] Next, in the drain section knitting process, the supply of the thicker inelastic yarn and elastic yarn is stopped, and the drain section 10A located at the bottom of the figure is knitted into a tubular shape using only the thinner inelastic yarn. As shown in Figure 3(b), when the lower end of region BB, which corresponds to the bottom of the drain section 10, is reached, the thicker inelastic yarn is added, and the section between regions BB is knitted with these two types of inelastic yarn. After that, when the upper end of region BB is reached, the drain section 10B located at the top of the figure is knitted into a tubular shape using only the thinner inelastic yarn. In this way, two sections (10A, 10B) are knitted into a continuous tubular shape. Furthermore, since the thicker inelastic yarn is added as a reinforcing yarn between the front and back of the intermediate section (region BB), a drainer 1 with high strength at the bottom of the drain section 10 can be easily obtained. Note that if a yarn with superior strength is used as the thinner inelastic yarn, it is not necessary to add the thicker inelastic yarn.

[0040] Once two drainage sections 10 have been knitted, in the second stretch section knitting process, the supply of the thicker non-elastic yarn and elastic yarn is started, and the second stretch section 20B is knitted continuously from the other end of the drainage section 10B using the two types of non-elastic yarn and elastic yarn.

[0041] Next, in the second cord knitting process, the second cord 30B is knitted in a ring shape using the same non-elastic and elastic threads as the second elastic section 20B, starting from a portion 40B at the other end of the second expandable section 20B. This completes a work-in-progress in which two draining devices 1 are connected by their respective draining sections 10A and 10B.

[0042] Finally, as shown in Figure 3(b), the work-in-progress produced in the above process is divided C between the drainage sections 10A and 10B at the midpoint between one end and the other, and as shown in Figure 3(c), these divided sections C, C are closed to obtain the finished product. Here, the closing of the divided sections C, C may be done by welding the threads constituting the drainage sections 10A and 10B together, by fixing them with an adhesive, or by sealing them by sewing; the closing method is arbitrary.

[0043] In the manufacturing method according to the above embodiment, the expandable sections 20A and 20B were assembled, but these expandable sections 20A and 20B may be omitted, and the string sections 30A and 30B may be assembled from the drainage sections 10A and 10B, respectively.

[0044] (Second Embodiment) This embodiment describes a method for manufacturing a drainer in which the bottom of the drain section 10 has a double-layered structure to reinforce the bottom. The following explanation will be given with reference to Figure 4.

[0045] First, in the water-draining lower section knitting process, as shown in Figures 4(a) and (b), the lower part of the water-draining section 10 is knitted into a tubular shape using one type of non-elastic yarn, for example, a polyester yarn with a thickness of 20 decitex. The length of the resulting tubular body 60 is approximately twice the length of the lower part of the water-draining section 10.

[0046] Next, in the double-closure process, the cylindrical body 60 assembled in the lower drain assembly process is twisted around the axis of the cylindrical body 60 at the intermediate portion 63 between one end 61 and the other end 62, as shown in Figure 4(c), to close the intermediate portion 63. Then, as shown in Figure 4(d), the other end 62 is inverted to the outside of the one end 61 at the intermediate portion 63 to create a double-layered cylindrical body 60. In this invention, "closed" does not mean a completely closed state, but rather a state in which it is closed to the extent that foreign matter does not leak out or escape from the bottom of the drainer 1 even if a gap exists.

[0047] Next, in the upper water drain knitting process, as shown in Figure 4(e), one end 61 and the other end 62, which are in a superimposed state at the open end 64 of the lower water drain 10L knitted in the double-closure process, are sewn together to form a single unit, and the upper water drain 10U is knitted into a cylindrical shape from the open end 64. For the sewing and integration of the one end 61 and the other end 62, it is preferable to use a total of three types of yarn: the non-elastic yarn used in the lower water drain 10L, a thicker yarn such as a DTY-processed false twist yarn with a thickness of 40 decitex, and a polyurethane yarn with a thickness of 130 decitex. Furthermore, the same yarn used in the lower water drain 10L is used in the upper water drain 10U.

[0048] Finally, as shown in Figure 4(f), similar to the first embodiment, the expandable portion 20 is knitted in the expandable portion knitting process, and then the cord portion 30 is knitted in the cord portion knitting process to complete the drainer 1.

[0049] According to the manufacturing method of this embodiment, the bottom of the drainage section 10 is twisted and closed, eliminating the need for closing means such as heat welding or sewing.

[0050] Furthermore, the present invention can be implemented in various other forms without departing from its spirit or main features. Therefore, the embodiments described above are merely illustrative in all respects and should not be interpreted restrictively. The scope of the present invention is defined by the claims and is not restricted by the descriptions in the text and drawings. Moreover, any modifications or changes falling within the equivalent scope of the claims are all within the scope of the present invention. [Explanation of symbols]

[0051] 1. Drainer 10 Drainage section 10U Drainage Top 10L drainer bottom 11 Open end 20 Telescopic part 21 Open end 30 Cord part 40 part 50 Base material 60 Cylindrical body 61 One end of the cylindrical body 62 Other end of the cylindrical body 63. Middle part of the cylindrical body 64 Open end of cylindrical body C division F Opening edge G Garbage Receptacle

Claims

1. It comprises a bottomed cylindrical drainage section and an annular string section provided at the open end of the drainage section, The draining device is such that the open end of the draining portion is fitted onto the opening edge of the drain strainer of the drain, thereby inserting the draining portion into the strainer, capturing foreign matter that flows into the strainer along with the wastewater with the draining portion and allowing the wastewater to pass through, and when the string portion is pulled up, the open end of the draining portion is separated from the opening edge of the strainer, and the draining portion is removed from the strainer while still containing the foreign matter, A disposable drainer characterized in that the string portion is connected to the open end of the drain portion via a portion of it.

2. A draining device according to claim 1, A draining device characterized in that the draining portion and the string portion are made of net material.

3. A draining device according to claim 1, A draining device characterized in that the draining portion and the string portion are made of nonwoven fabric.

4. It comprises a bottomed cylindrical drainage section made of net material, an expandable section made of net material provided around the entire circumference of the open end of the drainage section, and an annular cord section made of net material provided at the open end of the expandable section. The aforementioned expandable portion is fitted onto the opening edge of the drain strainer of the drain outlet, thereby inserting the drain portion into the strainer, capturing foreign matter that flows into the strainer along with the drainage and allowing the drainage to pass through, and when the string portion is pulled up, the expandable portion is detached from the opening edge of the strainer, and the drain portion is removed from the strainer while still containing the foreign matter, in a draining device, A disposable drainer characterized in that the expandable portion is connected to the open end of the draining portion, and the string portion is connected to the open end of the expandable portion via a portion of it.

5. A draining device according to claim 2 or 4, A draining device characterized in that the lower part of the draining section is made of a thread with excellent water permeability and a thread with higher strength than the aforementioned thread.

6. A draining device according to claim 2 or 4, A draining device characterized by having a double-layered structure at the lower part of the draining section.

7. It comprises a bottomed cylindrical drainage section made of net material, and an annular cord section made of net material provided at the open end of the drainage section. A method for manufacturing a drainer, wherein the open end of the drainer portion is fitted onto the opening edge of the drain strainer of the drain outlet, thereby inserting the drainer portion into the strainer, the drainer portion captures foreign matter that flows into the strainer along with the wastewater and allows the wastewater to pass through, and the string portion is pulled up so that the open end of the drainer portion detaches from the opening edge of the strainer, and the drainer portion is removed from the strainer while still containing the foreign matter, A first cord-forming step in which the first cord is formed into a ring, A drain section forming step is performed in which two drain sections are continuously formed into a cylindrical shape from a part of the other end of the annular first cord formed in the first cord forming step, A second cord-forming step involves forming a second cord in a ring shape, continuously from a part of the other end of the water-draining section formed in the first cord-forming step, A method for manufacturing a disposable drainer, characterized by including a step of partially cutting and closing the drainer portion, which involves dividing the drainer portion at an intermediate point between one end and the other end, and closing the divided portion.

8. It comprises a bottomed cylindrical drainage section made of net material, an expandable section made of net material provided around the entire circumference of the open end of the drainage section, and an annular cord section made of net material provided at the open end of the expandable section. A method for manufacturing a drainer, wherein the expandable portion is fitted onto the opening edge of the drain strainer of the drain outlet, thereby inserting the draining portion into the strainer, the draining portion captures foreign matter that flows into the strainer along with the drainage and allows the drainage to pass through, and the string portion is pulled up, thereby detaching the expandable portion from the opening edge of the strainer and removing the draining portion from the strainer while it still contains the foreign matter, A first cord-forming step in which the first cord is formed into a ring, A first stretchable portion knitting step in which a first stretchable portion is knitted in a ring shape, continuously from a part of the other end of the annular first cord portion knitted in the first cord knitting step, A drain section forming step is performed in which two drain sections are continuously formed into a cylindrical shape from the other end of the first expandable section formed in the first expandable section forming step, A second expandable section forming step is performed in which a second expandable section is formed continuously from the other end of the drainage section formed in the drainage section forming step, A second cord-forming step in which a second cord is formed in a ring shape, continuously from a part of the other end of the second stretchable part formed in the second stretchable part forming step, A method for manufacturing a disposable drainer, characterized by including a step of partially cutting and closing the drainer portion, which involves dividing the drainer portion at an intermediate point between one end and the other end, and closing the divided portion.

9. A method for manufacturing a disposable drainer according to claim 7 or 8, A method for manufacturing a disposable drainer, characterized by adding reinforcing threads between the front and rear of the intermediate section during the drainer section knitting process.

10. It comprises a bottomed cylindrical drainage section made of net material, and an annular cord section made of net material provided at the open end of the drainage section. A method for manufacturing a drainer, wherein the open end of the drainer portion is fitted onto the opening edge of the drain strainer of the drain outlet, thereby inserting the drainer portion into the strainer, the drainer portion captures foreign matter that flows into the strainer along with the wastewater and allows the wastewater to pass through, and the string portion is pulled up so that the open end of the drainer portion detaches from the opening edge of the strainer, and the drainer portion is removed from the strainer while still containing the foreign matter, A water drain section lower part assembly step in which the lower part of the water drain section is assembled into a cylindrical shape, The process involves a double-layering step in which the cylindrical body formed in the lower part of the drainage process is twisted around the axis of the cylindrical body at the intermediate part between one end and the other end to close the intermediate part, and then the other end is inverted to the outside of the one end at the intermediate part to create a double-layered structure for the cylindrical body, A water drain upper assembly step is performed in which the one end and the other end, which are in a superimposed state at the opening end of the lower part of the water drain assembled in the double-closure step, are integrated and the upper part of the water drain is assembled into a cylindrical shape from the opening end, A method for manufacturing a disposable drainer, comprising: a string-forming step of continuously forming the string portion in a ring shape from a part of the open end of the upper part of the drainer formed in the upper part forming step.

11. It comprises a bottomed cylindrical drainage section made of net material, an expandable section made of net material provided around the entire circumference of the open end of the drainage section, and an annular cord section made of net material provided at the open end of the expandable section. A method for manufacturing a drainer, wherein the expandable portion is fitted onto the opening edge of the drain strainer of the drain outlet, thereby inserting the draining portion into the strainer, the draining portion captures foreign matter that flows into the strainer along with the drainage and allows the drainage to pass through, and the string portion is pulled up, thereby detaching the expandable portion from the opening edge of the strainer and removing the draining portion from the strainer while it still contains the foreign matter, A water drain section lower part assembly step in which the lower part of the water drain section is assembled into a cylindrical shape, The process involves a double-layering step in which the cylindrical body formed in the lower part of the drainage process is twisted around the axis of the cylindrical body at the intermediate part between one end and the other end to close the intermediate part, and then the other end is inverted to the outside of the one end at the intermediate part to create a double-layered structure for the cylindrical body, A water drain upper assembly step is performed in which the one end and the other end, which are in a superimposed state at the opening end of the lower part of the water drain assembled in the double-closure step, are integrated and the upper part of the water drain is assembled into a cylindrical shape from the opening end, A process for forming the expandable section, which involves forming the expandable section continuously from the open end of the upper part of the drainage section formed in the upper part of the drainage section formed in the upper part of the drainage section formation process, A method for manufacturing a disposable drainer, comprising a cord-forming step of continuously forming the cord portion in a ring shape from a part of the other end of the expandable portion formed in the expandable portion forming step.

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