JP5130341B2 - Water-disintegratable cleaning article and method for manufacturing the same - Google Patents

Description

  The present invention relates to a water-disintegratable cleaning article that is used to remove dirt in a place where water is used, such as a flush toilet, and can be discarded in water after use, and a method for manufacturing the same.

  The following Patent Document 1 discloses an invention related to a disposable toilet cleaning brush used for cleaning a flush toilet.

  This toilet cleaning brush uses paper formed of short fibers, which are wood pulp, and a binder such as CMC. A plurality of cuts are formed on the paper, and the paper is wound into a brush shape. The toilet cleaning brush is fixed to the tip of a paper handle. After wiping the toilet bowl with the toilet cleaning brush, the toilet cleaning brush is discarded together with the handle portion in the flush toilet and disassembled in water. It also describes that the brush surface is subjected to a wax treatment in order to adjust the time for the paper to dissolve.

Japanese Patent Laid-Open No. 62-186833

  In the specification of Patent Document 1, since the time for cleaning the toilet bowl is a short time of about 10 seconds to 20 seconds, the statement that the paper constituting the toilet cleaning brush can be cleaned before it is dissolved in water is described. is there.

  However, the toilet cleaning brush formed of paper itself with wood pulp fixed with water-soluble CMC swells when touched with water during cleaning of the toilet, and its strength is extremely reduced. It is difficult to wipe off. In the case where the brush is treated with wax, since the wax component suppresses the decomposition of the paper, it takes a long time until the brush is decomposed in the septic tank or the like.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a water-disintegrable cleaning article that can effectively wipe off dirt attached to a toilet of a flush toilet and a manufacturing method thereof.

  The present invention also provides a water-degradable cleaning article that has a high strength when rubbed on a toilet, etc., can effectively exhibit the effect of removing dirt, and can be dispersed in water within a relatively short time after use, and a method for producing the same. The purpose is to provide.

  The present invention is a water-disintegratable cleaning article dispersible in water, having a cleaning portion and a holding portion, wherein at least a part of the cleaning portion is formed of a water-disintegratable fiber entangled nonwoven fabric. To do.

  Since the water-decomposable fiber entangled nonwoven fabric has high surface strength, the fiber entangled nonwoven fabric is not easily broken when the part to be cleaned such as a toilet is wiped in a wet state, and the dirt can be effectively removed. When used in a flush toilet after use and given a large amount of water, the fibers constituting the water-decomposable nonwoven fabric are dispersed and decomposed in water.

  The said fiber entangled nonwoven fabric of this invention is comprised with the fiber whose fiber length is 20 mm or less. The fiber entangled nonwoven fabric formed with fibers having a fiber length of 20 mm or less can be decomposed in a short time in the washing water of the flush toilet or in the septic tank.

  In the present invention, the fiber entangled nonwoven fabric is preferably composed of natural fibers and fibers that can be entangled with a fiber length of 20 mm or less.

  The strength during drying can be increased by the hydrogen bonding force of natural fibers, and the shape of the cleaning part can be maintained. Further, when wet with water during cleaning, the surface strength can be maintained by the entanglement force of the fibers, and cleaning can be performed for a relatively long time.

  In the present invention, preferably, the natural fiber is a pulp fiber, and the fiber entangled non-woven fabric contains 10% by mass or more and less than 90% by mass of pulp fiber, and contains 10% by mass or more and less than 90% by mass of entangled fiber. . For example, the interlaceable fiber is a rayon fiber.

  In this fiber entangled nonwoven fabric, fibers having a fiber length of 20 mm or less other than pulp fibers are entangled mainly, and the shape of the cleaning part is maintained during drying by the hydrogen bonding force of the pulp fibers.

When a large amount of water is given, the entanglement of the fibers constituting the nonwoven fabric is loosened by the dispersion of the pulp fibers, and the fibers are easily dispersed. In order to increase the dry strength and wet strength of the fiber entangled nonwoven fabric, it is preferable that the pulp fiber is contained in an amount of 10% by mass or more, and in order to exert the strength due to the fiber entanglement when wet, the entangled fiber is 10% by mass or more. It is preferably included.

  In the present invention, for example, the cleaning unit is provided with a string body in which the fiber entangled nonwoven fabric is wound.

  Moreover, it is preferable that the said string is formed with the said fiber entangled nonwoven fabric and the hydrolytic paper formed with the cellulosic fiber. Moreover, it is also possible to use what the said string body is compressed.

  Further, in the present invention, the cleaning portion is provided with a brush portion formed of a strip-like fiber entangled nonwoven fabric, and the fiber entangled nonwoven fabric is wound, folded or bundled on the cleaning portion. It may be.

  The method for producing a water-decomposable cleaning article of the present invention includes a step of forming a string body by winding a fiber entangled nonwoven fabric, a plurality of the string bodies are arranged in a cleaning portion, and at least a part of the string body is joined to each other And a process.

  Or a step of superimposing a fiber entangled nonwoven fabric and a hydrolytic paper formed of cellulosic fibers, a step of forming a string body by winding the fiber entangled nonwoven fabric and the hydrolytic paper together, and a plurality of the string bodies And a step of joining at least a part of the string members to each other.

  Alternatively, a step of winding hydrolyzed paper formed of cellulosic fibers, a step of winding a fiber entangled nonwoven fabric around the squeezed hydrolytic paper, and arranging a plurality of the string members in a cleaning section, wherein at least one of the string members And joining the parts to each other.

  In the said manufacturing method, it is preferable to use what a fiber entangled nonwoven fabric contains a pulp fiber 10 mass% or more and less than 90 mass%, and a fiber which can be entangled 10 mass% or more and less than 90 mass%.

  The water-decomposable cleaning article of the present invention uses a water-decomposable fiber entangled nonwoven fabric for the cleaning part, so that the cleaning part is not torn or collapsed when cleaning in a wet state, Dirt can be removed effectively. Moreover, when discarded in water after use, the entanglement of the fibers is loosened and the water is easily disintegrated.

  Moreover, the manufacturing method of the water-disintegrable cleaning article of this invention can manufacture the cleaning part with high density and high wet strength.

The perspective view which shows the state by which the water-decomposable cleaning article of the 1st Embodiment of this invention was hold | maintained at the holder, The perspective view which shows the water-disintegrable cleaning supplies of 1st Embodiment, The perspective view which shows the water-decomposable cleaning supplies of the modification of 1st Embodiment, The perspective view which shows the water-decomposable cleaning supplies of the modification of 1st Embodiment, The perspective view which shows the water-decomposable cleaning supplies of the modification of 1st Embodiment, The perspective view which shows the water-disintegratable cleaning supplies of 2nd Embodiment, The perspective view which shows the water-decomposable cleaning supplies of the modification of 2nd Embodiment, (A) (B) (C) is explanatory drawing explaining the string according to a structure for forming a string body, (A) is a perspective view showing a water-decomposable cleaning article of the third embodiment, (B) is a development view of individual cleaning unit, The perspective view which shows the water-decomposable cleaning supplies of 4th Embodiment, The perspective view which shows the water-decomposable cleaning supplies of the modification of 4th Embodiment, The perspective view which shows the water-decomposable cleaning supplies of the modification of 4th Embodiment, The perspective view which shows the water-decomposable cleaning supplies of 5th Embodiment,

  FIG. 1 is a perspective view showing a state in which the water-disintegratable cleaning article of the present invention is held by a holder, and FIG. 2 shows a first embodiment of the water-disintegratable cleaning article held by the holder shown in FIG. FIGS. 8A, 8B, and 8C are explanatory views showing twisted strings constituting the string body by structure.

  As shown in FIGS. 1 and 2, the water-decomposable cleaning article 1 has a holding part 2 and a cleaning part 3.

The holding part 2 has a substantially cylindrical shape.

  The holder 10 shown in FIG. 1 has a storage portion 12 integrally formed at the front portion of a handle portion 11 made of synthetic resin, and is provided with a pressing portion 13 made of synthetic resin facing the storage portion 12. The storage part 12 is formed so that the inner peripheral surface becomes a part of the cylindrical surface, and the pressing part 13 is also formed so that the inner surface facing the storage part 12 becomes a part of the cylindrical surface. The storage part 12 and the pressing part 13 are opposed to each other in the diameter direction of the cylindrical surface. A lever 14 is formed integrally with the pressing portion 13, and this lever 14 is rotatably supported by a bracket 11 a formed on the handle portion 11 via a shaft 15. An operation wire 16 is rotatably connected to the upper portion of the lever 14.

  The shaft 15 is provided with a torsion spring (not shown). The torsion spring urges the lever 14 clockwise with the shaft 15 as a fulcrum, and the pressing portion 13 is urged toward the storage portion 12. ing. A handle portion is provided on the top of the handle portion 11, and an operation lever is provided on the handle portion. The operation wire 16 is a thick wire, and its upper end is connected to the operation lever. When the operation lever is pulled up, the pressing portion 13 is separated from the storage portion 12. At this time, when the holding part 2 of the cleaning article 1 is inserted between the storage part 12 and the pressing part 13 and the operation lever is released, the cleaning part 1 is cleaned between the storage part 12 and the pressing part 13 by the biasing force of the torsion spring. The holding part 2 of the product 1 is clamped.

  In a state where the cleaning article 1 is held by the holder 10, the cleaning part 3 of the cleaning article 1 can be rubbed against a portion to be cleaned such as a toilet bowl to remove dirt adhered to the surface of the toilet bowl or the like.

At this time, it is also possible to wipe the cleaning unit 3 with water collected in the toilet. When the cleaning operation is completed, the cleaning lever 1 can be discarded in the toilet without touching the cleaning tool 1 by lifting the operation lever and releasing the pressing force by the pressing part 13.

  As shown in FIG. 2, the cleaning article 1 is configured by bundling a plurality of string bodies 4.

The string body 4 has the cut end surface 4a directed toward the tip of the cleaning unit 3, and the cleaning unit 3 is independent of the individual string bodies 4 without being joined to each other. The base portions of the individual string bodies 4 are bonded to each other by the water-soluble adhesive in the holding section 2, and the holding material 5 is wound around the outer peripheral surface of the bundle of the string bodies 4 and bonded with the water-soluble adhesive. Note that the string members 4 may not be bonded to each other in the holding unit 2, and the column shape may be maintained only by the string members 4 being bundled and wound by the holding material 5.

  FIGS. 8A, 8B, and 8C show the structures and manufacturing methods of twisted strings 4A, 4B, and 4C for forming the string body 4 according to the embodiments. The string body 4 used for the cleaning article 1 is composed of any one of the string strings 4A, 4B, 4C. Alternatively, the string 4 of the cleaning article 1 may be used in combination of two or more types of string 4A, 4B, 4C.

  A twisted string 4A shown in FIG. 8A is obtained by twisting a strip-shaped water-disintegratable sheet 8 having a predetermined width in one direction. The water-decomposable sheet 8 is formed of a water-decomposable fiber entangled nonwoven fabric so that the strength when the string 4A is wet can be maintained high. The fiber entangled nonwoven fabric can be formed by laminating fibers having a fiber length of 20 mm or less on a mesh-like perforated plate conveyor, and entangle the fibers by water jet treatment.

  The fiber entangled nonwoven fabric is composed of, for example, fibers that have a fiber length of 20 mm or less and can be entangled with a water jet, and pulp fibers that are natural fibers. When the nonwoven fabric is composed of pulp fibers and fibers that can be entangled with a fiber length of 20 mm or less, the fibers other than the pulp fibers are entangled by the water jet treatment, and the pulp fibers and the pulp fibers can be entangled with each other. Hydrogen bonds with the fiber. This fiber entangled nonwoven fabric can maintain the strength at the time of drying by the hydrogen bonding force of the pulp fiber, and can maintain a high surface strength by the entanglement force between the fibers when wet. When discarded in water and given a large amount of water, the pulp fibers are separated to loosen the string, and the entangled force of the entangled fibers is loosened, and the fibers are separated in a relatively short time.

  Other fibers having a fiber length of 20 mm or less and capable of being entangled by water jet treatment are preferably biodegradable fibers, and regenerated cellulose fibers such as viscose rayon, solvent-spun rayon, polynosic rayon, copper ammonia rayon, and alginate rayon. Is preferably used. It is also possible to use synthetic resin fibers such as polyethylene terephthalate (PET) fibers, nylon fibers, and polypropylene (PP) fibers as other fibers having a fiber length of 20 mm or less and entangled by water jet treatment.

  In addition to or in place of pulp fibers, natural fibers such as hemp and cotton, or natural gas such as bagasse, banana, pineapple, bamboo and the like can also be used.

  Further, polyvinyl alcohol (PVA) fiber, which is a water-soluble resin, or water-soluble or water-swellable carboxymethyl cellulose (CMC) is added as a binder to increase the strength of the water-decomposable sheet 8 when it is dried. After forming, the binder may be applied to make it easier to maintain the beaten shape.

  In addition, instead of the pulp fiber or in combination with the pulp fiber, a fiber having a fiber length of about 3 to 7 mm is beaten, and a large number of microfibers having a fiber length of 1 mm or less are peeled and formed on the surface of the fiber body. Wet paper made of entangled fibers such as rayon fiber and pulp and fibrillated rayon, or wet paper made of entangled fiber such as rayon fiber and fibrillated rayon, and then water jet Treated fiber woven fabric can also be used. In this nonwoven fabric, the fibers are firmly fixed by the hydrogen bonding force of the fibrillated rayon, so that the strength in the dry state and the wet state can be increased, and the fibrillated rayon is dispersed when a large amount of water is given. With this, water can be dissolved in a short time.

  The fiber entangled nonwoven fabric forming the twisted string 4A contains 10% by mass or more of natural fibers such as pulp fibers, and further contains 10% by mass or more of fibers having a fiber length of 20 mm or less that can be entangled by water jet treatment, such as rayon fibers. It is preferable. By containing 10% by mass or more of natural fiber, the strength of the water-decomposable sheet 8 at the time of drying can be increased, and the twisted shape can be maintained by hydrogen bonding force after twisting strongly. Moreover, the intensity | strength at the time of wetness can be made high by containing the fiber which can be entangled 10 mass% or more.

The water-decomposable sheet 8 formed of a fiber entangled nonwoven fabric preferably has a basis weight of 30 g / m ² or more, and more preferably 50 g / m ² or more. The sheet thickness is preferably 0.1 mm or more and 0.5 mm or less. When the basis weight is less than the above, the sheet strength when wet is lowered, and the strength of the string body 4 is also lowered. Although the upper limit of the basis weight is not particularly defined, the upper limit of the basis weight is preferably about 120 g / m ² in order to set the water disintegration time of the water-decomposable sheet 8 to 700 seconds or less.

In FIG. 8 (A), the twisted string 4A is formed by using one water-decomposable sheet 8 which is a fiber entangled nonwoven fabric, but a plurality of the water-decomposable sheets 8 may be stacked to form a twisted string. In order to make the individual string bodies 4 used in the cleaning article 1 shown in FIG. 2 thick and increase the strength at the time of cleaning, the basis weight and thickness of one water-decomposable sheet 8 may be increased. As described above, if the basis weight exceeds 120 g / m ² , the water disintegration time in the septic tank may exceed 700 seconds, which is not preferable. Moreover, if the fabric weight and thickness of one water-decomposable sheet 8 are excessively increased, it is difficult to twist in the twisting process. Therefore, when making the string body 4 thick, it is preferable to form the twisted string 4A using a plurality of water-decomposable sheets 8 having a basis weight in the range of 30 to 120 g / m ² .

  The twisted string 4B shown in FIG. 8 (B) is formed by overlapping the water-disintegratable sheet 8 and the water-disintegrating paper 9 which are fiber entangled nonwoven fabrics, and curling the water-disintegrating sheet 8 and the water-disintegrating paper 9 together. Yes. The hydrolyzed paper 9 is made of natural fibers such as pulp fibers, or made of natural fibers such as pulp fibers and regenerated cellulose fibers such as rayon fibers, and exhibits strength by hydrogen bonding force between the fibers.

  When the water-decomposable sheet 8 and the water-decomposable paper 9 are overlapped and rolled together, the water-decomposable sheet 8 that is a fiber entangled nonwoven fabric is strong and can be twisted firmly and firmly. After squeezing, the squeezed shape can be maintained at the time of drying by the hydrogen bonding force of the fibers constituting the hydrolyzed paper 9. Therefore, the high density string 4B can be easily processed and the twisted shape can be maintained. When the string body 4 of the cleaning article 1 shown in FIG. 2 is formed with the high density string 4B, even if a small amount of moisture is contained, the stiff dirt 4 adheres to the surface of the toilet or the like. Can be taken. Further, when a large amount of water is given by being disposed in a flush toilet or the like, the fibers constituting the water disintegrating paper 9 start to loosen and the squeezed state begins to loosen, and this causes the water disintegrating sheet 8 to also loosen.

  In the string 4B shown in FIG. 8 (B), the water-disintegrating paper 9 is colored in a color other than white such as blue or red. The water-decomposable sheet 8 which is a fiber entangled nonwoven fabric is formed of white fibers. By overlapping the water-decomposable sheet 8 and the water-decomposing paper 9, the colored portions and the white portions are alternately positioned, and the appearance is improved.

When processing the string 4B shown in FIG. 8B, an airlaid nonwoven fabric can be used in place of the water-disintegrating paper 9. The air laid nonwoven fabric is obtained by laminating pulp fibers by an air laid method to form a fiber web and bonding the fibers with a water-soluble binder such as PVA. This air laid nonwoven fabric has a low density of about 0.04 to 0.700 g / cm ³ with a basis weight in the range of ²⁰ to 80 g / m ² , for example. The thickness is about 0.3 to 5 mm and is bulky. It can be decomposed in water in a short time. Since this airlaid nonwoven fabric has cushioning properties, an elastic laced string can be obtained by twisting together the airlaid nonwoven fabric and the water-disintegratable sheet 8 that is a fiber entangled nonwoven fabric.

  The twisted string 4C shown in FIG. 8 (C) is a sheet of hydrolytic paper 9, or a plurality of hydrolytic papers 9, or the airlaid nonwoven fabric, or the hydrolyzed paper 9 and the airlaid nonwoven fabric, which are rolled up to form a core portion. It is formed and further wound while the water-decomposable sheet 8 which is a fiber entangled nonwoven fabric is wound around the core. The twisted string 4C has a high density while maintaining a twisted state in which the core portion exhibits a strong hydrogen bonding force. Since the water-decomposable sheet 8 having high wet strength is wound around the core portion, the surface strength of the cord body 4 can be increased, and the shape of the cord body 4 can be easily maintained when wiping is performed in a wet state. Further, when a large amount of water is given, the water disintegrating paper 9 or the airlaid nonwoven fabric constituting the core portion is decomposed, and as a result, the water disintegrating sheet 8 is loosened and can be hydrolyzed in a short time.

  It is preferable that the number of times the twisted cords 4A, 4B, and 4C are twisted is 4 to 30 times per 25 cm length of the sheet before the twisted cord is wound. When the number is less than the above number, the density of the string is too low to withstand the frictional force at the time of wiping work, and is easily broken. On the other hand, if the number of times exceeds the above, a load may be applied to the sheet during the turning operation, and the sheet may be cut. Moreover, as for the thickness of the string 4A, 4B, 4C, 1-10 mm is preferable. If it is this range, the feeling when the to-be-cleaned part is wiped with the string body 4 is good, and when it is discarded in a flush toilet or the like, it becomes easy to discard without clogging in the pipe.

  As for the string body 4 which comprises the cleaning article 1 shown in FIG. 2, at least 1 type of the said string 4A, 4B, 4C is cut | disconnected by the length of 30-100 mm, for example, and the thing of the same length is about 5-50 pieces. It is made up of bundles. In the state where the cut end face 4a is aligned, the base of the string 4 is bonded to each other with a water-soluble adhesive such as PVA in the holding part 2, and the string 4 is held on the outer surface of the bundle of the string 4 with water disintegrating property. The material 5 is wound and bonded with a water-soluble adhesive. In the cleaning unit 3, the individual string bodies 4 are independent from each other.

  The cleaning article 1 is used by holding the holding portion 2 by the storage portion 12 and the pressing portion 13 of the holder 10 shown in FIG. 1 when in use, so even if the holding portion 2 gets wet with water during cleaning. It is possible to prevent the string body 4 from being easily separated in the portion 2. Therefore, it is sufficient that the holding unit 2 is applied with a fixing force that does not cause the string body 4 to be separated until it is attached to the holder 10 and when it is dried. The material 5 can be formed of the same paper material as the hydrolytic paper 9. It is also possible to form the water-disintegratable holding material 5 with a water-disintegratable film such as a PVA film. Alternatively, the string body 4 may be bundled and compressed in the holding unit 2 or compressed by being heated and the hydrogen bonding force between the string bodies 4 may be increased.

  Moreover, also in the cleaning part 3, the string bodies 4 may mutually be adhere | attached with a water-soluble adhesive agent, or the string bodies 4 may be couple | bonded by the hydrogen bond force. In this case, when the cleaning unit 3 is wiping a toilet bowl and the like, if moisture is given to the cleaning unit 3, the string bodies 4 are independent and the independent string body 4 is wiped off.

  If the fixing force between the string bodies 4 in the holding unit 2 is weakened, the water disintegration time in which the string body 4 is separated in the holding unit 2 is shorter than the water disintegration time in which the string body 4 itself is decomposed.

When the cleaning article 1 is discarded in a flush toilet or the like and given a large amount of water, the bonding force between the string bodies 4 in the holding portion 2 is immediately released, and the string bodies 4 are separated into pieces, and then the individual string bodies are separated. 4 can be hydrolyzed in a short time.

  When the length of one string 4 is 100 mm and the length of one string 4 is individually disassembled, it is 700 seconds or less when measured according to JIS P4501 (toilet paper looseness test). Preferably, it is 600 seconds or less. More preferably, it is 300 seconds or less. In the measurement, 300 ml of ion exchange water having a water temperature of 20 ± 5 ° C. is placed in a beaker having a capacity of 300 ml, the string 4 is put into the ion exchange water, and the rotor is rotated at 600 rpm in water. When the string body is stirred together with the ion-exchanged water after the rotation, the time until the string body disappears and the sheet-like form does not remain and is dispersed for each constituent fiber is measured.

  Next, a method for using the cleaning article 1 will be described.

  The holding part 2 of the cleaning article 1 shown in FIG. 2 is held between the storage part 12 and the pressing part 13 of the holder 10 shown in FIG. 1 and cleaned by rubbing the inside of the toilet bowl of the flush toilet with the cleaning part 3. To do.

At this time, if the cleaning unit 3 is wetted with the cleaning water in the flush toilet and wiped off, the dirt can be effectively removed. The string body 4 is a roll of the water-disintegratable sheet 8, or a roll of the water-disintegratable sheet 8 and the water-disintegrating paper 9, and the fibers have high density, high rigidity, and elasticity.

Furthermore, irregularities are formed on the surface of the cord body 4 by twisting. Therefore, the dirt adhering to the toilet bowl can be effectively removed. In particular, since the string body 4 is composed of a fiber entangled nonwoven fabric, the surface strength is high and the string body 4 is not worn out during cleaning, so that the shape of the string body 4 is easily maintained. Since the cleaning part 3 is formed by a plurality of string bodies 4, each string body 4 moves independently on the surface of the part to be cleaned such as a toilet, and each string is subjected to pressure during cleaning. Since the body 4 is separated and the cleaning unit 3 spreads, it becomes easy to clean the toilet bowl and the like to every corner.

  After the cleaning, when the pressing portion 13 of the holder 10 is separated from the storage portion 12, the cleaning article 1 falls into the flush toilet and can flow as it is with the washing water. Since the fixing force of the holding unit 2 is released in water and is distributed to the individual string bodies 4, the string bodies 4 can flow without clogging the piping. And the string body 4 decomposes | disassembles in a piping or a septic tank, and becomes a separate fiber.

  3 to 5 are perspective views showing modifications of the water-decomposable cleaning article of the first embodiment.

  The cleaning article 21 shown in FIG. 3 bundles a string 4 of a predetermined length, wraps a water-decomposable holding material 5 around the entire length of the bundle, and connects the inner surface of the holding material 5 and the plurality of strings 4. Bonded with water-soluble adhesive. The cleaning article 21 can use one of the one end 21a and the other end 21b as a holding part, and the other as a cleaning part. That is, the cleaning article 21 can be held between the storage portion 12 and the pressing portion 13 of the holder 10 at either the end portion 21a or the end portion 21b. In the present invention, the holding unit and the cleaning unit may be structurally indistinguishable as in this embodiment.

  In the cleaning article 21, the individual string bodies 4 may not be bonded to each other. By being wound with the holding material 5, the form shown in FIG. 3 can be maintained until the holder 10 is mounted. When either the end 21a or the end 21b is held by the storage portion 12 and the pressing portion 13 of the holder 10, the base portion of the cord body 4 is bundled even if the holding material 5 is subsequently wetted and disintegrated with water. Therefore, the cleaning article 21 can maintain a bundled state. Further, when the holding material 5 is wetted with water and disintegrated, the string bodies 4 become free from each other in a portion not held by the holder 10, and the portion to be cleaned can be wiped with the individual string bodies 4.

  In the cleaning article 31 shown in FIG. 4, the individual string bodies 4 are folded back from the center in the length direction, the ends of the string bodies 4 are bundled at the holding portion 32, and are bonded to each other with a water-soluble adhesive, Furthermore, the holding material 5 is wound around and joined to the periphery. The bent portion 4 b of the string body 4 appears at the tip of the cleaning unit 33, and the string members 4 are independent from each other in the cleaning unit 33.

  In the cleaning article 31, the bent portion 4 b of the string body 4 is located in the cleaning section 33, and the cut end surface 4 a of the string body 4 is not exposed in the cleaning section 33, so that water adheres to the tip of the cleaning section 33. Even if the bent portion 4b gets wet, the twist of the string body 4 is hardly slackened, and the rigidity of the string body 4 can be maintained relatively long. Therefore, it is easy to perform the work of rubbing the bent portion 4b against the portion to be cleaned to remove the dirt stuck to the portion to be cleaned.

  In the cleaning article 41 shown in FIG. 5, the individual string bodies 4 are bent in a loop shape, the cut end surfaces 4 a of the respective string bodies 4 are aligned, and are bonded to each other with a water-soluble adhesive. Is wound and bonded with a water-soluble adhesive to form a flat holding portion 42. In the cleaning unit 43, the individual string bodies 4 are in a free state, and a loop part 4 c where the string body 4 is bent is located at the tip of the cleaning unit 43. In the holding part 42, the string body 4 and the holding material 5 are pressurized so as to be flat or heated and pressurized so that the string bodies 4 are hydrogen-bonded to each other. Alternatively, the holding material 5 may not be provided. In this case, a holder is used in which the opposing surfaces of the storage portion 12 and the pressing portion 13 shown in FIG.

  FIG. 6 is a perspective view showing a water-disintegrable cleaning product 51 according to the second embodiment of the present invention, and FIG. 7 is a perspective view showing a water-disintegratable cleaning product 61 according to a modification of the second embodiment.

In the cleaning article 51 shown in FIG. 6, the cleaning unit 53 is configured by the string body 4 and the water-disintegratable sheet 6. The water-decomposable sheet 6 is called sheet pulp, and is formed by laminating pulp fibers and pressing them into a sheet shape. This sheet pulp maintains the sheet shape by the hydrogen bonding force of the pulp fiber. Alternatively, pulp fibers may be bonded with a water-soluble adhesive such as PVA. The sheet pulp has a sufficiently large fiber basis weight compared to the hydrolytic paper 9 shown in FIG. 8B (the basis weight is about 10 to 30 g / m ² ), and the basis weight of the sheet pulp is 500 to 1000 g / m. It is about ² . The water-decomposable sheet 6 formed of sheet pulp has a large basis weight, high density, and high rigidity. When the water-decomposable sheet 6 is arranged together with the string body 4 in the cleaning section, it is easy to remove dirt adhered to the surface of the cleaning section such as a toilet with the highly rigid sheet 6, and the string body 4 is deformed relatively freely. Can wipe a wide area of the part to be cleaned. Moreover, the string 4 facilitates cleaning of the corners of the toilet.

  When discarded in a flush toilet after use, the sheet pulp is decomposed into pulp fibers in a relatively short time.

  In the cleaning article 51 shown in FIG. 6, a plurality of string bodies 4 are arranged around a plurality of (for example, about 5 to 20) water-decomposable sheets 6 stacked. In the holding part 52, the water-decomposable sheet 6 and the string 4 are bonded with a water-soluble adhesive, and the holding material 5 is wound around and bonded to the periphery. In the cleaning unit 53, the individual water-decomposable sheets 6 are independent from each other, and the string body 4 is also independent.

  In the cleaning article 61 shown in FIG. 7, the water disintegratable block 7 is used together with the string body 4 in the cleaning portion 63.

  The water-decomposable block 7 is composed of biodegradable fibers that can be dispersed in water, such as pulp fibers. For example, the water-decomposable block 7 is formed into a three-dimensional shape with pulp fibers. The manufacturing method is such that the pulp fiber is dispersed in water and can be molded into a cylindrical shape, etc. The pulp fiber is poured into a concave mold in which a porous part for draining is formed at the bottom and dehydrated. Heat-dried. Alternatively, the pulp fibers are supplied into the above-mentioned mold or into a pressing mold of another shape, and after being dehydrated or dehydrated, they are pressure-compressed with a press machine and dried. Alternatively, a sludge-like raw material in which pulp fibers, a thickener, and a water-soluble adhesive are mixed may be pushed with a screw extruder, and then dehydrated and heat-dried.

  The water-decomposable block 7 is configured by being fixed by hydrogen bonding in a state where pulp fibers or other fibers are gathered, or by bonding the fibers with a water-soluble adhesive.

  In the cleaning article 61 shown in FIG. 7, the string body 4 is positioned around the water-decomposable block 7 in the cleaning section 63, and the bent portion 4 b of the string body 4 is directed to the tip of the cleaning section 63. Further, in the holding portion 62, the water-decomposable block 7 and the base portion of the string body 4 are bonded with a water-soluble adhesive, and the holding material 5 is wound around and bonded to the periphery.

  Since the end surface of the water-decomposable block 7 is exposed at the tip of the cleaning unit 63, the cleaning article 61 enhances the dirt removal effect by rubbing the end surface of the water-decomposable block 7 against the portion to be cleaned. The to-be-cleaned part can be wiped in a wide range by the string body 4 located around it. When it is discarded in the flush toilet after use, the fixing in the holding part 62 is released, the water-dissolvable block 7 and the string 4 are disassembled apart, and when a large amount of water is given, the string 4 is disintegrated. Further, the water-decomposable block 7 is also disintegrated in water by dispersing the fibers in a short time.

  FIG. 9A is a perspective view showing a water-disintegratable cleaning product 71 according to a third embodiment of the present invention, and FIG. 9B is an exploded perspective view illustrating the basic structure of the cleaning product 71. It is.

  This water-disintegratable cleaning article 71 has a holding part 72 and a cleaning part 73. The cleaning article 71 has at least one cleaning unit 78. In the illustrated embodiment, two cleaning singles 78 are overlapped, the upper portions of the cleaning singles 78 are bonded with a water-soluble adhesive, and the cleaning singles 78 are covered with a holding material 74 such as hydrolyzed paper, The holding material 74 is bonded to each cleaning unit 78 with a water-soluble adhesive. In the cleaning unit 73, the cleaning unit 78 can move freely.

  FIG. 9B shows the structure of the cleaning unit 78 in an expanded manner. The cleaning single unit 78 is obtained by storing a fiber compression sheet 76 in a water-decomposable exterior sheet 75. The exterior sheet 75 is the same fiber entangled nonwoven fabric as the water-decomposable sheet 8 forming the twisted string 4A shown in FIG. Preferred ranges such as the configuration of the fiber entangled nonwoven fabric constituting the exterior sheet 75 and the composition of the fibers are the same as those of the water-decomposable sheet 8.

  A plurality of fiber compression sheets 76 are stacked and stored in the exterior sheet 75. The fiber compression sheet 76 is obtained by stacking and compressing water-dispersible fibers having a fiber length of 20 mm or less. The fibers are natural fibers such as pulp fibers and regenerated cellulose fibers such as rayon fibers. The fiber compression sheet 76 can maintain the sheet shape in a compressed state by the hydrogen bonding force of the cellulosic fiber and the mechanical bonding force between the fibers by compression. It is also possible to join the fibers with a water-soluble adhesive. In this case, synthetic resin fibers such as PET fibers, PP fibers, PE fibers, and nylon fibers may be included. However, the fiber compression sheet 76 is preferably formed of only biodegradable fibers.

For example, the fiber compression sheet 76 is formed only with pulp fibers. The compression pressure at this time is about 2000 to 6000 kPa, for example, 3920 kPa (40 kgf / cm ² ). The compression time is about 1 to 5 seconds. The pressurization at this time is performed at room temperature. Or you may heat and pressurize. Further, in order to increase the hydrogen bonding force between the fibers, moisture may be given by spraying or the like, and then heated and compressed.

  The fiber compression sheet 76 is a fiber having a fiber length of 20 mm or less, and is preferably formed of pulp fiber or the like. Therefore, when discarded in a flush toilet or the like, the fiber breaks apart in a relatively short time. Therefore, the size of the fiber compression sheet 76 can be arbitrarily set according to the shape of the cleaning article. However, in order that the fiber compression sheet 76 can be decomposed in a short time in water, the volume of the fiber compression sheet 76 swells more than twice when each fiber compression sheet 76 contains 300% of its own weight. It is preferable to do. Further, the time during which one fiber compressed sheet 76 is hydrolyzed (the measurement method is as described above) is preferably 700 seconds or shorter, more preferably 600 seconds or shorter, and even more preferably 300 seconds or shorter. Further, the total mass of the fiber compression sheets 76 used in one cleaning article 71 is preferably 20 g or less. 20 g corresponds to 9 m of toilet paper, and is a range in which pipe clogging hardly occurs in a normal flush toilet.

  The fiber compression sheet 76 can contain a cleaning agent, an abrasive, an antibacterial agent, a fragrance, and the like.

  As shown in FIG. 9 (B), a plurality of fiber compression sheets 76 are arranged on the expanded rectangular exterior sheet 75, and the exterior sheet 75 is bent at the imaginary line L. And the side edge part 75a of the long side of the exterior sheet 75 is adhere | attached with a water-soluble adhesive so that the fiber compression sheet 76 may not be pinched. Further, the edge portions 75b on the short side are bonded with a water-soluble adhesive. Instead of bonding with a water-soluble adhesive, or together with bonding with a water-soluble adhesive, the side edge portions 75a and the end edge portions 75b are pressed against each other, or heated and pressed, and the hydrogen bonding force of the exterior sheet 75 Further, they may be joined by a mechanical coupling force.

  The cleaning article 71 shown in FIG. 9A is for cleaning within a range of a predetermined width including the end edge portion 75b in a state in which the folded portion 75c obtained by folding the exterior sheet 75 at the imaginary line L is directed downward. The single bodies 78 are bonded to each other with a water-soluble adhesive, and the holding material 74 is bonded and fixed.

  In the cleaning article 71, the holding portion 72 is held between the holders. Unlike the one shown in FIG. 1, the holder for holding the cleaning article 71 is configured such that the storage portion 12 and the pressing portion 13 are formed in a plane and face each other, and the holding portion 72 is connected to the storage portion 12 and the pressing portion 13. Is sandwiched between and held. When the cleaning part 73 of the cleaning article 71 is slid on a part to be cleaned such as a toilet bowl, dirt can be removed by the exterior sheet 75. Since the side surface of the cleaning unit 73 is flat, the cleaning of a large area is possible by sliding the side surface of the cleaning unit 73 on the portion to be cleaned.

Since the exterior sheet 75 is formed of a fiber entangled nonwoven fabric, the exterior sheet 75 is not easily torn when rubbing the portion to be cleaned. When moisture is given during cleaning, the fiber compression sheet 76 in the exterior sheet 75 expands and exhibits elasticity, so that the portion to be cleaned can be rubbed with an appropriate pressure with the exterior sheet 75.

  The holding material 74 is hydrolytic paper obtained by making pulp fibers, or hydrolytic paper obtained by making pulp fibers and joining the fibers together with a water-soluble adhesive. Therefore, the holding material 74 is retained when the cleaning article 71 is discarded in water after use. The holding force by the material 74 is immediately released, and the single cleaning items 78 are independent of each other. Further, in water, the bonding between the side edge portions 75a and the bonding between the end edge portions 75b of the exterior sheet 75 is released, the exterior sheet 75 and the fiber compression sheet 76 are separated, and the exterior sheet 75 and the fiber compression sheet 76 are independent. And then broken down into individual fibers.

  FIG. 10 is a perspective view showing a water-disintegrable cleaning article 91 according to the fourth embodiment of the present invention. 11 and 12 are perspective views showing modifications thereof.

  The cleaning article 91 shown in FIG. 10 is used with a water-decomposable sheet 94 wound in a cylindrical shape. This water-decomposable sheet 94 is a water-decomposable fiber entangled nonwoven fabric. The preferred range of the configuration of the fiber entangled nonwoven fabric and the composition of the fibers is the same as that of the water-decomposable sheet 8 shown in FIG. The water-decomposable sheet 94 is tightly wound in a cylindrical shape, and the holding member 92 is wound with the same holding material 5 as the cleaning article 1 shown in FIG. It is bonded with an adhesive. In the cleaning unit 93, the water-decomposable sheets 94 wound in a columnar shape are not bonded to each other and can move freely.

  In addition, when winding the water-decomposable sheet 94, a water-soluble adhesive may be applied to the surface of the water-degradable sheet 94, and the water-decomposable sheet 94 may be bonded in a wound state. Alternatively, after the water-decomposable sheet 94 is wound in a cylindrical shape, the water-decomposable sheet 94 may be partially compressed into dots or the like, and the water-decomposable sheet 94 may be partially hydrogen bonded. The whole may be compressed. Further, the water-disintegratable sheet 94 that is a fiber entangled nonwoven fabric and the water-disintegrating paper 9 shown in FIG. 8B may be wound together in a cylindrical shape.

  The cleaning article 91 is used by holding the holding portion 92 between the storage portion 12 and the pressing portion 13 of the holder 10 shown in FIG. In the cleaning part 93, since the water-decomposable sheet 94 is wound in multiple layers and has a high density, sufficient rigidity can be exhibited when the water-decomposable sheet 94 is rubbed against the part to be cleaned. Moreover, since the water-decomposable sheet 94 is a fiber entangled nonwoven fabric, it is difficult to break during cleaning.

  When discarded in a flush toilet after cleaning, the holding material 5 formed of water-disintegrating paper is peeled off, the winding state of the cylindrical water-disintegrating sheet 94 is loosened, and the water-disintegrating sheet 94 is decomposed in water.

  Moreover, it is possible to contain a cleaning agent, an abrasive | polishing agent, an antibacterial agent, a fragrance | flavor, etc. in the facing part of the water-decomposable sheet 94.

  A cleaning article 101 shown in FIG. 11 has the water-decomposable sheet 94 shown in FIG. 10 wound in a columnar shape, and the holding member 5 is wound around the outer periphery of the holding part 102 and bonded with a water-soluble adhesive.

In the cleaning unit 103, a water-decomposable sheet 94 wound in a columnar shape is cut in a direction along the winding axis, so that a plurality of cuts 104 are formed. As a result, in the cleaning unit 103, the water-decomposable sheet 94 is separated into a number of strip-shaped pieces to form the brush unit 105. Note that the notch 104 does not extend to the holding portion 102. Therefore, the strip-shaped pieces are not separated separately before being mounted on the holder 10. Alternatively, the strip-shaped water-decomposable sheet 94 is formed with slits having a constant pitch, a plurality of strip-shaped pieces are formed on the strip-shaped water-decomposable sheet 94, and the water-degradable sheet 94 having the slits is wound into a columnar shape to be cleaned. 103 may be configured.

  In the cleaning article 101 shown in FIG. 11, when the cleaning portion 103 cleans a portion to be cleaned such as a toilet bowl, the strips of the water-decomposable sheet 94 constituting the brush portion 105 spread, and the individual strips are effectively used. Can be cleaned. When discarded after use, the holding material 5 is separated and the water-decomposable sheet 94 is unwound, but the water-decomposable sheet 94 can be hydrolyzed in a short time because the cut 104 is formed in the water-degradable sheet 94.

  The water-decomposable cleaning article 111 shown in FIG. 12 is folded so that a plurality of water-decomposable sheets 94 are stacked, and the holding material 5 is wound around the base and bonded with a water-soluble adhesive, thereby maintaining a flat shape. A portion 112 is formed. The water-degradable sheet 94 located in the cleaning unit 113 may or may not be bonded to the opposite surfaces of the folding.

  In this cleaning article 111, the holding portion 5 is held by a holder, and a cleaning portion such as a toilet surface is cleaned by a cleaning portion 113 formed of a water-disintegratable sheet 94 which is a fiber entangled nonwoven fabric. In this case, a holder is used in which the opposing surfaces of the storage portion 12 and the pressing portion 13 shown in FIG. Since the water-decomposable sheet 94 is a fiber entangled nonwoven fabric, it is difficult to tear when it slides on the portion to be cleaned.

  Further, in the cleaning article 111 shown in FIG. 12, the cleaning unit 113 may be formed by stacking and bundling a large number of rectangular water-decomposable sheets 94 instead of folding the water-decomposable sheet 94.

Also in this case, it is possible to make a brush shape by making a plurality of cuts in the water-decomposable sheet 94 to form a large number of strip-shaped pieces.

  The exterior sheet 75 shown in FIG. 9 and the water-decomposable sheet 94 shown in FIGS. 10 to 12 preferably have a water-disintegration time of 300 seconds or less when the size is 100 mm × 100 mm.

  FIG. 13 is a perspective view showing a cleaning article 121 according to the fifth embodiment of the present invention. This cleaning article 121 bundles the string body 4 folded in half. This string 4 is the same as that shown in FIGS. In a state in which the string bodies 4 are bundled, the base side is compressed to form a compression portion 121a. In the non-compression part 121b, it is a free state in the state by which the bending part 4b of each string 4 is not compressed. The compression part 121a is maintaining the compression state with the mechanical binding force and hydrogen bond of the some string 4 formed with the water-decomposable fiber entangled nonwoven fabric.

  The cleaning article 121 can maintain the product shape in the dry state because the string body 4 is not separated in the dry state. The compression part 121a can be held in the holder and the non-compression part 121b can be slid on the part to be cleaned for cleaning. In this case, a holder is used in which the opposing surfaces of the storage portion 12 and the pressing portion 13 shown in FIG. Note that the entire cleaning article 121 may be compressed.

  Also in the other embodiments, it is possible to compress only the holding part, or to compress both the holding part and the cleaning part.

[Example]
As shown in Table 1 below, the fiber entangled nonwoven fabrics of Examples 1 to 5 were made as trial products. Furthermore, the string 4A shown in FIG. 8 (A) was formed from the fiber entangled nonwoven fabrics of Examples 1 to 4. The fiber entangled nonwoven fabrics of Examples 1 to 5 were formed from softwood bleached kraft pulp (NBKP) and viscose rayon having a fineness of 1.1 dtex and a fiber length of 7 mm. The blending ratio (mass%) of NBKP and viscose rayon is as shown in Table 1. The blending ratio of NBKP is 95 mass% in Example 1, 90 mass% in Example 2, and 50 in Example 3. % By mass, Example 4 at 10% by mass, and Example 5 at 5% by mass. The rest was viscose rayon. The basis weight of each of the nonwoven fabrics of Examples 1 to 5 was 50 g / m ² .

The fiber entangled nonwoven fabrics of Examples 1 to 5 were made by making a fiber web on a porous plastic wire, and then entangled the fibers by applying a jet water flow by a high-pressure water jet injection device without drying. As the high-pressure water jet injection device, one nozzle having an aperture diameter of 95 μm and 2000 nozzles arranged in a direction perpendicular to the web flow direction at a pitch of 0.5 mm was used. While conveying the fiber web at a speed of 30 m / min, a processing energy of 0.24682 kW / m ² per unit area was given by the high-pressure water jet injection device. Further, a second water jet treatment was performed under the same conditions, and then the web was dried with a Yankee drying drum.

  The thickness and fiber density of the obtained fiber entangled nonwoven fabric are as described in the column of “Physical property value of fiber entangled nonwoven fabric” and the column of “Thickness” and “Density”.

  The fiber entangled nonwoven fabrics of Examples 1 to 5 were cut so that the web flow direction (MD) during production was 150 mm, and the width dimension in the direction (CD) perpendicular thereto was 25 mm, and the dry strength and Wet strength was measured.

In this measurement, each sample was held between chucks in a Tensilon testing machine so that the distance in the longitudinal direction was 100 mm, and the tensile test was performed by widening the distance between chucks at a speed of 100 mm / min. The maximum load until the sheet broke was defined as the breaking strength (N / 25 mm).

  The dry strength is a result of performing a tensile test in a state where each sample is dried, and the wet strength is a result of performing a tensile test after immersing each sample in ion-exchanged water for 10 seconds. This test was performed in an environment of room temperature 25 ° C. and relative humidity 65%. In Table 1, the measured values are described in the “Physical property value of fiber entangled nonwoven fabric” column and the “Dry strength” and “Wet strength” columns.

  Next, each water-decomposable sheet of Examples 1 to 4 is cut into a strip shape so that the width dimension of the CD is 50 mm, and twisted in one direction as shown in FIG. Formed. The number of twists was 17 times for each 25 cm length of the water-decomposable sheet. The width dimension and density of the twisted string are as described in the “string width” and “density” rows in the column of “physical property value after twisting”. Similar to the measurement of the water-decomposable sheet, this twisted string was held so that the distance between chucks was 100 mm, and a tensile test was performed under the same conditions as the water-decomposable sheet to measure the breaking strength.

  In order to measure the wet strength, a tensile test was performed after dipping in ion-exchanged water for 10 seconds in a state of being held between chucks so as not to loosen the twisted string. The results are as described in the column of “Physical property values after scouring” and in the lines of “Dry strength” and “Wet strength”.

The water disintegration was measured by the same measurement method as described in the embodiment. The water disintegration time was measured by cutting each fiber entangled nonwoven fabric of Examples 1 to 5 into a size of 100 mm × 100 mm. The string bodies of Examples 1 to 4 were measured for water disintegration time using a string body cut into a length of 100 mm. The measurement results are as described in the row of “water decomposability” in Table 1.

  Among the examples shown in Table 1, in particular, Examples 2 to 4 had high dry strength of the fiber entangled nonwoven fabric of 7.0 N / 25 mm or more and high wet strength of 1.0 N / 25 mm or more. . In Examples 2 to 4, twisted strings could be easily processed by twisting, and no cutting or tearing occurred during the processing. Further, in Examples 2 to 4, the wet strength of the laced string was assured as 8 N or more. The water disintegration time of the fiber entangled nonwoven fabric was 94 seconds for the highest value in Examples 1 to 4 and 118 seconds for Example 5, all of which were 300 seconds or less. In addition, the string of Example 1 to Example 4 had a maximum water disintegration time of 123 seconds.

  The fiber entangled nonwoven fabric and string of Examples 1 to 5 can all be used for cleaning supplies, but in order to make the strength of the fiber entangled nonwoven fabric at drying 7.0 N / 25 mm or more. It is preferable that 10 mass% or more of pulp fibers are contained. Further, in order to set the wet strength of the fiber entangled nonwoven fabric to 1.0 N / 25 mm or more and the wet strength of the twisted string to 8.0 N / 25 mm or more, it is preferable to contain 10% by mass or more of rayon fiber.

Examples A to F shown in Table 2 were prepared by wet-making fiber webs containing 50% by mass of NBKP and viscose rayon fibers (fineness of 1.1 dtex and fiber length of 7 mm). A water entangled nonwoven fabric was produced by water jet treatment under the same conditions as in Example 5. However, the basis weights of Examples A to F were “15.0”, “20.0”, “50.0”, “100.0”, “120.0”, “50.0” (all g / m ² ). The thickness and density of each fiber entangled nonwoven fabric are as described in the row of “Thickness” and “Density” in the column of “Physical property value of fiber entangled nonwoven fabric” in Table 2. Further, the dry strength, wet strength and water disintegration time of the fiber entangled nonwoven fabric were measured in the same manner as in Examples 1 to 5. The results are as shown in the rows of “Dry Strength”, “Wet Strength”, and “Hydrolysis” in the “Physical Property Value of Fiber Entangled Nonwoven Fabric” column.

Furthermore, the same string as shown in FIG. 8 (A) was formed from the water-decomposable sheets of Examples A to F. In all cases, the sheet width dimension was 50 mm, and the number of turns was varied for each example. The number of twists per 25 cm in length of the water-decomposable sheets of Examples A to F was “18”, “18”, “17”, “16”, “16”, and “4” (all times). The width dimension and density of the twisted string are as described in the “string width” and “density” rows in the column of “physical property value after twisting”. Further, the dry strength and wet strength of the string and the water disintegration time were measured in the same manner as in Examples 1 to 4. The results are shown in the rows of “Dry strength”, “Wet strength” and “Hydrolysis” in the column of “Physical property value after twisting” in Table 2.

From Table 2, it is preferable that the basis weight of the water-decomposable sheet is 30 g / m ² or more in order to maintain the dry strength of the water-decomposable sheet and the wet strength of the string. Further, in order to set the water disintegration time of the fiber entangled nonwoven fabric to 400 seconds or less and the disintegration time of the twisted string to 700 seconds or less, the basis weight of the water disintegratable sheet is preferably 120 g / m ² or less. If the number of twists is 4 times or more per 25 cm length, the wet strength of the twisted string can be increased, and preferably 10 times or more. The upper limit of the number of turns is not particularly limited as long as the sheet is not cut, but the upper limit is about 30 times.

  DESCRIPTION OF SYMBOLS 1 ... Cleaning article, 2 ... Holding part, 3 ... Cleaning part, 4 ... String body, 4A, 4B, 4C ... Spear string, 4a ... Cutting end surface, 4b ... Bending part, 4c ... Loop part, 5 ... Holding material, DESCRIPTION OF SYMBOLS 6 ... Water decomposable sheet, 7 ... Water degradable block, 10 ... Holder, 12 ... Storage part, 13 ... Holding part, 21, 31, 41, 51, 61, 71, 91, 101, 111, 121 ... Cleaning article 32, 42, 52, 62, 72, 92, 102, 112 ... holding part, 33, 43, 53, 63, 73, 93, 103, 113 ... cleaning part, 75 ... exterior sheet, 76 ... fiber compression sheet, 94 ... water-decomposable sheet, 121a ... compression part, 121b ... non-compression part

Claims (8)

In water-disintegratable cleaning supplies that can be dispersed in water,
A cleaning section and a holding section;
The cleaning unit is provided with a string body in which a fiber entangled nonwoven fabric is wound,
A water-disintegrable cleaning article in which at least a part of the string is compressed.   The water-disintegrable cleaning article according to claim 1, wherein the fiber-entangled nonwoven fabric is composed of fibers having a fiber length of 20 mm or less.   The water-disintegrable cleaning article according to claim 1, wherein the fiber-entangled nonwoven fabric is composed of natural fibers and fibers that can be entangled with a fiber length of 20 mm or less.   4. The water-decomposable nonwoven fabric according to claim 3, wherein the natural fiber is a pulp fiber, and the fiber-entangled nonwoven fabric contains 10% by mass or more and less than 90% by mass of pulp fiber and 10% by mass or more and less than 90% by mass of entangled fiber. Cleaning supplies.   The water disintegrable cleaning article according to claim 3 or 4, wherein the entangled fiber is a rayon fiber. The water-disintegrable cleaning article according to any one of claims 1 to 5, wherein the cleaning unit is bundled with the string body . A step of forming a string body by winding a fiber entangled nonwoven fabric;
Compressing at least a part of the plurality of string members, arranging the plurality of string members in a cleaning unit, and joining at least a part of the string members to each other;
A method for producing a water-disintegratable cleaning article, comprising: The said fiber-entangled nonwoven fabric is a manufacturing method of the water-decomposable cleaning article of Claim 7 which contains 10 mass% or more and less than 90 mass% of pulp fibers, and contains the fiber which can be entangled 10 mass% or more and less than 90 mass%.

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