JP2011125566A - Cleaning sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning sheet which has a sufficient collection nature and sufficient strength, and furthermore a following nature to unevenness and a voluminous feeling. <P>SOLUTION: In the cleaning sheet 10, a fiber aggregate 20 is joined to at least the one side of a base material sheet 11 and a cleaning part 12 is formed. The fiber aggregate 20 consists of a supporting part 30, which is formed by the twisting together of thread 31 for supporting, and two or more dust collecting parts 40, which are supported by the supporting part 30 by the twisting together of the thread 31 for supporting along the thread 31 for supporting in the length direction. The dust collecting part 40 consists of a short fiber aggregate 41, which consists of two or more short fibers and has a fiber degree of freedom which can make fibers hold dust. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cleaning sheet for wiping off dust such as floors, tatami mats, walls and windows.

  As a cleaning tool using short fibers, a mop or a rag as a woven cloth has been widely used for a long time. Since these were used repeatedly, durability was required. Further, since the fibers are generally used by being wetted with water or the like, the fibers are formed by being strongly twisted, and the fibers themselves do not have a function of entwining dust and the like.

  Apart from such a conventional cleaning tool, a non-woven fabric cleaning tool that is currently widely used is known as a cleaning tool formed of short fibers. For example, Patent Document 1 discloses a sheet-like cleaning tool formed by integrating a low-entangled nonwoven fabric and a net for maintaining strength. In this cleaning tool, short fibers move by using the cleaning operation performed by humans as energy, so that the ends of the short fibers move so as to hold dust, and the short fibers are low entangled so that the dust can be easily entangled. Designed to make it possible to collect dust efficiently. Furthermore, in order to compensate for the strength reduction caused by the low entanglement, the strength and the collection property are satisfied by being integrated with the resin net. However, such a cleaning tool is required to further improve the followability to the grooves and the uneven surface and the volume feeling.

Japanese Patent Laid-Open No. 7-184815 JP-A-11-276402

  This invention provides the cleaning sheet which can eliminate the fault which the prior art mentioned above has.

The present invention is a cleaning sheet in which the fiber assembly is bonded to at least one surface of the base sheet to form a cleaning portion,
The fiber assembly includes a support portion formed by twisting a plurality of support yarns, and a plurality of support portions supported by the support portions by twisting the support yarns along the length direction of the support yarns. It consists of a garbage collector,
The garbage collection part provides a cleaning sheet comprising a plurality of short fibers and a short fiber assembly having a degree of freedom in which dust can be held between the fibers.

  According to the cleaning sheet of the present invention, sufficient collection and strength that could not be achieved so far, and followability to unevenness and volume feeling are achieved.

FIG. 1 is a perspective view showing a first embodiment of the cleaning sheet of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is an enlarged schematic view showing the main part of the fiber assembly in the cleaning sheet shown in FIG. FIG. 4 is a perspective view showing one usage pattern of the cleaning sheet shown in FIG. 1. FIG. 5 is a schematic diagram illustrating the cleaning sheet cleaning apparatus illustrated in FIG. 1. FIG. 6 is an enlarged schematic view (corresponding to FIG. 3) showing the main part of the fiber assembly in another embodiment of the cleaning sheet of the present invention. FIG. 7 is a schematic diagram (corresponding to FIG. 3) showing an enlarged main part of the fiber assembly in another embodiment of the cleaning sheet of the present invention. FIG. 8 is a schematic view (corresponding to FIG. 3) showing an enlarged main part of the fiber assembly in another embodiment of the cleaning sheet of the present invention. FIG. 9 is a perspective view (corresponding to FIG. 1) showing another embodiment of the cleaning sheet of the present invention. FIG. 10 is a perspective view (corresponding to FIG. 1) showing another embodiment of the cleaning sheet of the present invention. FIG. 11 is a perspective view (corresponding to FIG. 1) showing another embodiment of the cleaning sheet of the present invention.

  The present invention will be described below based on preferred embodiments with reference to the drawings. The cleaning sheet 10 of the first embodiment shown in FIGS. 1 and 2 includes a base sheet 11. The base material sheet 11 is a rectangular sheet having a longitudinal direction X and a width direction Y orthogonal thereto. The cleaning sheet 10 has a cleaning unit 12 on one surface of the base sheet 11. The cleaning unit 12 is located in the central region in the width direction Y of the base sheet 11. The base material sheet 11 extends laterally from the left and right side edges 12a of the cleaning unit 12 to form a pair of flaps 11a. On the other hand, with respect to the longitudinal direction X, the cleaning unit 12 extends over the entire region of the base sheet 11 in the longitudinal direction X. The cleaning unit 12 is made of a fiber assembly and is formed with a predetermined thickness.

  The fiber assembly 20 constituting the cleaning unit 12 is a string-like one extending in one direction (hereinafter referred to as a string-like fiber assembly). Hereinafter, the string-like fiber assembly 20 will be described. The string-like fiber aggregate 20 has a predetermined thickness and a shape having a length sufficiently larger than the thickness.

  FIG. 3 shows an enlarged schematic view of the main part of the string-like fiber assembly 20. The string-like fiber assembly 20 has a support portion 30 in which a plurality of support yarns 31 are twisted together. In FIG. 3, two supporting yarns 31 are used. The string-like fiber assembly 20 has a plurality of dust collecting portions 40 supported by the support portion 30 by twisting the support yarns 31. The garbage collection part 40 is comprised from the string-like short fiber assembly 41 which consists of a several short fiber.

  The string-like fiber aggregate 20 will be further described. The string-like fiber aggregate 20 is a twisted yarn structure in which two supporting yarns 31 and one string-like short fiber aggregate 41 are twisted together. Consists of the body. In this twisted yarn structure, the short fiber aggregate 41 is twisted so that a plurality of loop-shaped slack portions 42 are formed along the length direction of the twisted yarn structure. And this loop-shaped slack part 42 comprises the dust collection part 40 mentioned above.

  As described above, the short fiber aggregate 41 is composed of a plurality of fibers. The short fiber aggregate 41 referred to here broadly includes a plurality of short fibers generally in one direction and forming an aggregate as a whole. The short fiber refers to a fibrous raw material used for spinning, and is generally obtained by cutting long fibers. The length is generally 38 to 200 mm. As the short fiber aggregate 41, for example, a weak twisted yarn made of short fibers can be used. The short fiber aggregate 41 exists over the entire length direction of the fiber aggregate 20. The short fiber aggregate 41 is supported by the support portion 30 including the two support yarns 31 in a meandering state, thereby forming a plurality of loop-shaped slack portions 42.

  When the cleaning sheet 10 of the present embodiment is used, the dust is collected and held between the fibers in the dust collecting unit 40 configured by the loop-shaped slack portion 42. From this point of view, the loop-shaped slack portion 42 has a fiber degree of freedom (mobility) capable of collecting and holding dust. Therefore, when the short fiber aggregate 41 constituting the loop-shaped slack portion 42 is made of a weak twisted yarn made from short fibers, the number of the weak twisted yarn (JIS L1095) is 10 T / m or less, particularly 5 T / m. The following is preferable. As long as the shape as a fiber aggregate can be maintained, the number may be 0 (no twisted yarn).

  The loop-like slack portion 42 will be described in detail. The slack portion 42 has a width, that is, a length at the widest portion of the bottom of the slack portion 42, preferably from 1 to 15 mm from the viewpoint of collecting and holding dust. More preferably, it is 3 to 10 mm. From the same viewpoint, the height of the loop-shaped slack portion 42, that is, the length from the support 30 to the top of the loop-shaped slack portion 42 is preferably 2 to 15 mm, and more preferably 5 to 10 mm.

  The number of fibers constituting the short fiber assembly 41 affects the collection and retention performance of the dust by the loop-shaped slack portion 42 that constitutes a part of the short fiber assembly 41. From this viewpoint, the short fiber aggregate 41 preferably has a fineness of 1.0 to 8.0 dtex, particularly 1.4 to 6.6 dtex. There is no restriction | limiting in particular in the kind of fiber which comprises the short fiber assembly 41, A suitable fiber is used according to the specific form of the short fiber assembly 41, and the collection and holding | maintenance performance of garbage. For example, when the short fiber aggregate 41 is a weakly twisted yarn made of short fibers, the short fiber aggregate 41 can be formed from natural fibers such as cotton. Or the short fiber aggregate 41 can be comprised from synthetic fibers, such as a polyester fiber and an acrylic fiber. In the short fiber aggregate 41 composed of these forms, the fineness of individual fibers constituting the short fiber aggregate 41 is 1.0 to 8.0 dtex, particularly 1.4 to 6.6 dtex. Therefore, it is preferable from the point that the fiber easily moves due to the stress received by the fiber itself.

  Since the short fiber aggregate 41 has a degree of freedom of fiber that can collect and hold dust between its constituent fibers, it is bulky. Therefore, although it is not easy to measure the thickness of the short fiber aggregate 41 strictly, for example, the thickness when measured on a JIS class 1 scale is 2 to 20 mm, particularly 3 to 10 mm. Is preferable from the viewpoint that followability to uneven surfaces and grooves is enhanced.

  Regarding the supporting yarn 31 that constitutes the fiber assembly 20 together with the short fiber assembly 41, the length of the supporting yarn 31 is substantially the same as the length of the fiber assembly 20. As described above, a plurality of supporting yarns 31 are used. The plurality of supporting threads 31 may be the same or different. The supporting yarn 31 has a role of holding the short fiber aggregate 41 and a role of constituting a basic skeleton of the fiber aggregate 20. Therefore, unlike the short fiber assembly 41 described above, the support yarn 31 is composed of a high strength yarn. From this viewpoint, the supporting yarn 31 is preferably composed of, for example, a single yarn made of continuous filaments, a strong twisted yarn, a strong twisted yarn of short fibers, or the like.

  The fineness of the support yarn 31 is preferably 1.0 to 8.0 dtex, particularly 1.4 to 6.6 dtex from the viewpoint of the above-described strength. The supporting thread 31 can be composed of natural fibers such as cotton, and synthetic fibers such as polyester and acrylic.

  The fiber assembly 20 is formed by twisting the support yarn 31 and the string-like short fiber assembly 41 as described above. Specifically, using a known ring-type twisting machine, a plurality of supporting yarns 31 and string-like short fiber aggregates 41 are supplied to the twisting machine to perform twisting. In this case, the supply speed of each support yarn 31 is kept the same, and the supply speed of the short fiber aggregate 41 is made faster than the supply speed of the support yarn 31. By adopting such a condition, twisting is performed in a state where the short fiber aggregate 41 is slack with respect to the support yarn 31. As a result, in the obtained fiber assembly 20, the short fiber assembly 41 is meandered, and a large number of loop-shaped slack portions 42 are formed.

  The string-like fiber assembly 20 composed of the support yarn 31 and the short fiber assembly 41 is disposed over the entire length of the base sheet 10 in this embodiment. Therefore, the length of the string-like fiber assembly 20 is substantially the same as the length of the base sheet 10. However, instead of this, the length of the string-like fiber assembly 20 may be shorter than the length of the base sheet 10.

  In the cleaning sheet 10, the plurality of string-like fiber aggregates 20 are linearly arranged on one surface of the base sheet 11 so as to extend in the same direction at intervals from each other, thereby forming the cleaning unit 12. Yes. Therefore, the thickness of the string-like fiber assembly 20 corresponds to the thickness of the cleaning unit 12. 1 and 2, the adjacent string-like fiber aggregates 20 are separated from each other by a predetermined distance.

  As shown in FIG. 1, the base sheet 11 and the string-like fiber aggregate 20 are joined at a joining point 13. The joining point 13 is formed, for example, by fusion of the base sheet 11 and the constituent fibers of the string-like fiber assembly 20. Alternatively, it is formed by bonding the base sheet 11 and the constituent fibers of the string-like fiber assembly 20. The junction points 13 may be regularly arranged or randomly arranged. According to the manufacturing method described later, the junction points 13 are regularly arranged. In each string-like fiber aggregate 20, the joining points 13 are formed at a predetermined interval along the direction in which the string-like fiber aggregate 20 extends. The number of the joining points 13 formed in each string-like fiber assembly 20 may be sufficient to fix the string-like fiber aggregate 20 and the base sheet 11 sufficiently. When the number of the junction points 13 is too large, the fiber freedom degree of the short fibers is lowered and the trapping property tends to be lowered. From these viewpoints, the interval between the adjacent junctions 13 is preferably 10 to 100 mm, particularly preferably 20 to 70 mm. Further, the length of the string-like fiber aggregate 20 is made longer than the length of the base sheet 10, and the string-like fiber aggregate 20 is fixed to the base sheet 10 so as to draw a loop between the joining points 13, You may make it have a space | gap between the string-like fiber assembly 20 and the base material sheet 10. FIG. By fixing the string-like fiber assembly 20 in this manner, the volume increases and the followability to a step, a groove, or the like is further improved.

  The length of the string-like fiber assembly 20 may be longer than the length of the base sheet 11. In this case, when the string-like fiber aggregate 20 is fixed to the base sheet 11, the string-like fiber aggregate 20 is loosened so as to draw a loop between the joining points 13, and the string-like fiber aggregate 20 You may make it have a space | gap between this and the base material sheet 11. FIG. By fixing the string-like fiber assembly 20 in this way, the volume of the cleaning sheet 10 is increased, and the followability to a step, a groove, or the like is further improved.

  The thickness of the cleaning sheet 10 in the cleaning unit 12 is preferably 2 to 20 mm, particularly 3 to 10 mm under a load of 300 Pa.

  The fibers constituting the string-like fiber assembly 20 may be coated with a drug. By applying chemicals for the purpose of dry and dry cleaning, the collection ability using the adsorption of dust is enhanced. Examples of such agents include various oil component components. As the oil agent component, for example, oil agents such as mineral oil, synthetic oil, silicone oil, and the like, and those obtained by mixing a surfactant, a solvent, an antioxidant, a perfume and the like with the oil agent component can be used. The coating amount of the chemicals including the oil component can be about 0.1 to 50% by weight with respect to the weight of the string-like fiber aggregate 20 before coating.

  When the cleaning sheet 10 is used for the purpose of wet wet cleaning, by impregnating the cleaning sheet 10 with a cleaning agent, stain stains and solid sticking stains are dissolved to improve the cleaning performance. As the cleaning agent, a mixture of a surfactant, a solvent, a disinfectant, a preservative, a fragrance, water, or the like can be used. The impregnation amount of the cleaning agent can be about 20 to 500% by weight with respect to the weight of the short fiber.

  In addition to being used for the purpose of dry dry cleaning and wet wet cleaning, the cleaning sheet 10 of the present embodiment wipes and wipes liquids such as water, commercially available cleaning agents and wax agents. It can also be used like a rag to impregnate.

As the base sheet 11 to which the string-like fiber aggregate 20 is fixed, for example, various nonwoven fabrics and films made of synthetic resin, paperboard board made of pulp, pulp In addition, a paperboard board obtained by mixing paper with a synthetic resin or a composite material thereof can be used. When a nonwoven fabric is used, for example, an air-through nonwoven fabric, a spunbond nonwoven fabric, an airlaid nonwoven fabric, and the like are preferable examples. The basis weight of these nonwoven fabrics is preferably ³ to 200 g / m ² , particularly 10 to 100 g / m ² from the viewpoints of strength and strain strength. For the same reason, when a film is used, the basis weight is preferably 3 to 500 g / m ² , particularly preferably 10 to 250 g / m ² . When using paperboard, the basis weight is preferably 10 to 500 g / m ² , particularly preferably ²⁰ to 250 g / m ² . As the synthetic resin constituting the base sheet 11, a polyolefin resin such as polyethylene or polypropylene, a polyester resin such as polyethylene terephthalate, an acrylic resin, a vinyl resin, or the like can be used.

  For example, as shown in FIG. 4, the cleaning sheet 10 is used by being mounted on a cleaning tool 100. The cleaning tool 100 includes a head portion 101 to which the cleaning sheet 10 can be attached and a rod-shaped handle 102 connected to the head portion 101 via a universal joint 103. The mounting surface (bottom surface) of the head unit 101 is rectangular in plan view, and in a normal use mode, the cleaning tool 100 performs cleaning by moving the head unit 101 in the width direction (particularly, reciprocating movement). . The cleaning sheet 10 is mounted on the head unit 101 in the cleaning tool 100 including the head unit 101 and the handle 102 connected to the head unit 101 using the base material sheet 11. The cleaning sheet 10 is mounted on the head unit 101 such that the side of the base sheet 11 on which the cleaning unit 12 is not provided faces the mounting surface (bottom surface) of the head unit 101. Next, the flap 11 a in the base material sheet 11 is folded back to the upper surface side of the head unit 101. Further, the flap 11a is pushed into the plurality of flexible sheet holding portions 104 having radial slits in the head portion 101. In this manner, the cleaning sheet 10 can be fixed to the head portion 101 of the cleaning tool 100 using the flap 11a of the base sheet 11. In addition, when the base material sheet 11 includes a net (scrim) as in an embodiment shown in FIGS. 10 and 11 described later, the engagement force between the base material sheet 11 and the sheet holding unit 104 is increased. Therefore, it is preferable. In this state, the cleaning sheet 10 of the present embodiment is used for wiping and cleaning hard surfaces such as flooring, walls, ceilings, glass, tatami mats, mirrors and furniture, household appliances, home outer walls, and automobile bodies. it can. Examples of types of garbage that can be collected and retained include cotton dust, hair, pet hair, dirt, bread crumbs, and dust particles such as sand and sesame.

  Next, the suitable manufacturing method of the cleaning sheet 10 of this embodiment is demonstrated, referring FIG. In the manufacturing apparatus 50 shown in FIG. 5, first, the original fabric 11 ′ is unwound from the original fabric roll 11 </ b> A of the base sheet 11. Separately, the long raw material 20 ′ of the string-like fiber aggregate 20 ′ is fed out from the winding roll 20 </ b> A of the string-like fiber aggregate 20 manufactured in advance. A long raw material 20 'is disposed on one surface of the unrolled original fabric 11'. In FIG. 5, one long raw material 20 ′ of the string-like fiber assembly 20 ′ is drawn out, but actually a plurality of the raw materials 20 ′ are drawn out.

  The original fabric 11 ′ on which the long raw material 20 ′ is placed is introduced into the embossing device 54. The embossing device 54 includes a first roll 54a in which a large number of protrusions 54c are dispersedly disposed on the peripheral surface, and an anvil roll 54b disposed to face the first roll 54a. Both rolls 54a and 54b are arranged in a distance relationship such that the protrusion 54c of the first roll 54a is in contact with or close to the peripheral surface of the anvil roll 54b. Of the two rolls 54a and 54b, at least the first roll 54a is heated. In addition to such an embossing 54 device, an embossing method in which a roll similar to the projection 54c of the first roll 54a is arranged in place of the roll of the anvil roll 54b opposed to the roll 54a and the projections 54c are brought into contact with each other (Tip to Tip method) can also be used. By the action of heat and pressure using the embossing device 54, the fibers and the original fabric 11 'constituting the long raw material 20' are melted and solidified, and the long raw material 20 'and the original fabric 11' are joined. By this joining, a plurality of joining points 13 (see FIG. 1) are formed. The shape of the junction point 13 is generally shown as a dot (circular) shape, but instead of this, a shape other than a dot (circular) shape such as an elliptical shape, a triangular shape, a square shape, a V shape, or a cross shape is used. It can also be used.

  In this way, a long cleaning sheet 10 'is obtained. The sheet 10 ′ is introduced into the width direction cutting device 56. The width direction cutting device 56 includes a first roll 56a in which protruding strip blades 56c extending in the axial direction of the roll are arranged at a predetermined interval in the circumferential direction, and an anvil roll arranged to face the first roll 56a. 56b. Both rolls 56a, 56b are arranged in a distance relationship such that the convex blades 56c in the first roll 56a are in contact with or close to the peripheral surface of the anvil roll 56b. By introducing the sheet 10 ′ into the width direction cutting device 56, the sheet 10 ′ is cut along the width direction at a predetermined interval. By this cutting, the sheet 10 ′ becomes a sheet, and the target cleaning sheet 10 is obtained.

  In this manufacturing method, the drug coating device may be installed at a position immediately downstream of the embossing device 54 shown in FIG. For example, a spray device is used for applying the medicine. Further, a gravure roll coating method may be used for drug coating.

  Next, another embodiment of the present invention will be described with reference to FIGS. In these embodiments, only the points different from the first embodiment will be described, and the descriptions regarding the first embodiment will be applied as appropriate to points that are not particularly described. 6 to 11, the same members as those in FIGS. 1 to 5 are denoted by the same reference numerals.

  In the embodiment shown in FIG. 6, a plurality of short fiber assemblies 41 constituting the garbage collection unit 40 are formed. Each short fiber assembly 41 has two end portions 41a and 41b. The end portions 41 a and 41 b are supported by the support portion 30 made of the support yarn 31 by twisting with the support yarn 31. As a result, each short fiber aggregate 41 forms a loop-like slack portion between its both end portions 41a and 41b. This loop-shaped slack portion functions as the dust collecting portion 40. According to the cleaning sheet of this embodiment, there exists an advantage that a loop-shaped slack part becomes easy to face a cleaning surface efficiently.

  In the cleaning sheet of this embodiment, the fiber assembly 20 is suitably manufactured by the following method. That is, after manufacturing the fiber assembly 20 of the embodiment according to the manufacturing method of the fiber assembly 20 in the cleaning sheet of the embodiment shown in FIG. 1, the loop-like slack portion in the meandering short fiber assembly 41 is 1 Cut every other place. A cutter provided in the ring type twisting machine may be used for cutting. Such cutters are known in the art.

  The embodiment shown in FIG. 7 also includes a plurality of short fiber assemblies 41 that constitute the dust collection portion 40, as in the embodiment shown in FIG. Each short fiber assembly 41 has two end portions 41a and 41b. Each short fiber aggregate 41 is supported by a support portion 30 made of the support yarn 31 by twisting with the support yarn 31 at a position between both end portions 41a and 41b. As a result, the region from the position where the short fiber assembly 41 is supported by the support portion 30 to the end portions 41 a and 41 b functions as the dust collection portion 40. According to the cleaning sheet of this embodiment, since it becomes easy to lengthen the length of the garbage collection part 40, the followability with respect to an uneven surface improves, and there exists an advantage that the collection property of an uneven surface improves. .

  In order to manufacture the cleaning sheet of this embodiment, after manufacturing the string-like fiber aggregate 20 of the same embodiment according to the manufacturing method of the string-like fiber aggregate 20 in the cleaning sheet of the embodiment shown in FIG. Cut the top of the loop at the slack. A cutter provided in the ring type twisting machine may be used for cutting.

  Also in the embodiment shown in FIG. 8, a plurality of short fiber aggregates 41 constituting the garbage collection part 40 are formed. Each short fiber assembly 41 has two end portions 41a and 41b. Each short fiber aggregate 41 is supported by a support portion 30 made of the support yarn 31 by twisting with the support yarn 31 at one end portion 41a. As a result, the region from the position where the short fiber assembly 41 is supported by the support portion 30 to the other end portion 41 b functions as the dust collection portion 40. According to the cleaning sheet of this embodiment, since it becomes easy to lengthen the length of the garbage collection part 40, the followability with respect to an uneven surface improves, and there exists an advantage that the collection property of an uneven surface improves. .

  In order to manufacture the cleaning sheet of this embodiment, after manufacturing the string-like fiber assembly 20 of the same embodiment according to the manufacturing method of the string-like fiber assembly 20 in the cleaning sheet of the embodiment shown in FIG. The loop-like slack portions in the short fiber aggregate 41 are cut every other place. Furthermore, the loop top part in each remaining loop-like slack part is cut | disconnected. Or conversely, the loop tops in the loop-like slack portion of the meandering short fiber assembly 41 are cut every other place. Furthermore, each remaining loop-like slack portion is cut. A cutter provided in the ring type twisting machine may be used for cutting.

  In the embodiment shown in FIG. 9, a plurality of string-like fiber assemblies 20 are arranged in a wavy line so as to extend in the same direction. The respective string-like fiber assemblies 20 are arranged at intervals. The string-like fiber assembly 20 arranged in a wavy line has a joint 13 formed at the apex position. According to this embodiment, dust in the flow direction (X direction) can be efficiently collected as compared to the first embodiment.

  The cleaning sheet 10 of the first embodiment shown in FIG. 10 is different from the first embodiment in the type of the base sheet 11. In detail, the base material sheet 11 in this embodiment is comprised from the net | network (scrim) 111a. The net 111a has a lattice shape. The mesh size, the wire diameter, and the distance between the wires are determined in consideration of the strength of the cleaning sheet 10 and the bonding property with the string-like fiber aggregate 20 constituting the cleaning unit 12. Specifically, the wire diameter of the net 111a is preferably 10 to 5000 μm, more preferably 50 to 1000 μm. The net 111a may have partially different wire diameters. In this case, it is preferable that the wire diameter of the thick portion is the above value. The distance between the lines of the net 111a is preferably 0.1 to 30 mm, and more preferably 5 to 15 mm. The net 111a is made of, for example, a synthetic resin. According to the cleaning sheet 10 of the present embodiment, there is an advantage that the engagement force between the sheet holding unit 104 and the net 111a is increased in a state in which the cleaning sheet 10 is mounted on the cleaning tool 100 shown in FIG.

  The cleaning sheet 10 of the embodiment shown in FIG. 11 is also different from the first embodiment in the type of the base sheet 11. In detail, the base material sheet 11 in this embodiment is comprised from the composite_body | complex of the net | network (scrim) 111a and the nonwoven fabric 111b. As the net 111a, the same one as in the embodiment shown in FIG. 10 can be used. As the nonwoven fabric 111b, the same thing as 1st Embodiment can be used. The net 111a and the nonwoven fabric 111b are joined by, for example, heat fusion or adhesion using an adhesive. In the base material sheet 11, the net 111 a faces the cleaning unit 12 side, and the nonwoven fabric 111 b faces the side opposite to the cleaning unit 12. According to the cleaning sheet 10 of this embodiment, the same effect as the cleaning sheet of the embodiment shown in FIG. 10 is produced.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. In the above-described embodiment, the cleaning sheet 10 is used by being mounted on the cleaning tool shown in FIG. 4. However, instead of this, the cleaning sheet 10 is used as disclosed in Japanese Patent Application Laid-Open No. Hei. A cleaning sheet formed in a flat bag shape having an insertion space described in Japanese Patent Laid-Open No. 9-299305 may be used, and the cleaning sheet may be attached to a handy wiper type cleaning tool described in the same publication. Alternatively, cleaning may be performed by directly holding the cleaning sheet 10 by hand.

  Moreover, in the said embodiment, although the cleaning part 12 was formed only in the single side | surface of the base material sheet 11, you may form the cleaning part 12 in both surfaces of the base material sheet 11 instead of this.

  Furthermore, the embodiments described above may be combined as appropriate to form another embodiment.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such examples.

[Example 1]
The cleaning sheet shown in FIG. 1 was manufactured. A spunbond having a basis weight of 30 g / m ² was used as the base sheet 11. This nonwoven fabric was composed of 2.2 dtex polyester fibers. The base sheet 11 had a length in the longitudinal direction X of 280 mm and a length in the width direction Y of 210 mm. On one surface of the base sheet 11, the string-like fiber aggregates 20 were linearly arranged at intervals of 8 mm. The arranged region was a region extending over the entire region in the longitudinal direction X (280 mm) in the range of 105 mm in the central region in the width direction Y of the base sheet 11. The string-like fiber assembly 20 was composed of two support yarns 31 and one string-like short fiber assembly 41. Each supporting yarn 31 was a strong twisted yarn (more than 1800 T / m, fineness 2.2 dtex) made of polyester short fibers having a fiber length of 120 mm. The string-like short fiber aggregate 41 was a non-twisted yarn (more several 0 T / m, fineness 1.4 dtex) composed of an entangled body of polyester short fibers having a fiber length of 120 mm. Two supporting yarns 31 and one string-like short fiber assembly 41 were twisted together using a ring twisting machine. In twisting, the speed of one string-like short fiber assembly 41 was made faster than the speed of the two supporting yarns 31 supplied to the twisting machine. The supply speed of the string-like short fiber assembly 41 was adjusted so that the height of the loop slack portion 42 was 6 mm.

[Example 2]
A cleaning sheet was obtained in the same manner as in Example 1 except that the loop-like slack portion 42 of the string-like fiber assembly 20 produced in Example 1 was cut as the string-like fiber assembly.

[Comparative Example 1]
A cleaning sheet (trade name: Quickle (registered trademark) wiper) made by Kao Corporation consisting of a combination of a nonwoven fabric and a resin net was used as the cleaning sheet.

[Evaluation]
The cleaning sheets obtained in Examples and Comparative Examples were attached to the head part of a Quickle (registered trademark) wiper manufactured by Kao Corporation, and the dust collection property was evaluated by the following method. As a surface to be cleaned, a wooden floor groove (National KER7UE V groove depth 1 mm, width 2 mm) was used. The collecting property was obtained by spraying 5 pieces of hair having a length of 3 cm and then wiping 5 reciprocations so as to follow the cleaning surface. After wiping, the model dust remaining on the cleaning surface was visually observed and judged. Apart from this evaluation, the followability of the cleaning sheet to the floor surface was also evaluated. The follow-up property was determined by visually observing the number of times the cotton linter spread on the rail was completely wiped by placing an appropriate amount of cotton linter on the sliding door rail, making two sets of vertical wiping and two times of horizontal wiping. The results are shown in Table 1.
・ Garbage collection ability ○: Model dust does not remain on the uneven part and its peripheral part.
(Triangle | delta): Model dust of about 1/4 or less of application | coating amount remains in an uneven | corrugated | grooved part and its peripheral part.
X: Model dust of more than about 1/2 of the spraying amount remains on the uneven part and its peripheral part.
・ Followability to the floor ○: The number of wipes is 5 sets or less, and the cotton linters that have been distributed are collected completely.
(Triangle | delta): The frequency | count of wiping off is 10 sets or less, and collects the cotton linter disperse | distributed completely.
X: Even if the number of times of wiping is 11 sets or more, the distributed cotton linter cannot be completely collected.

  As is clear from the results shown in Table 1, it can be seen that the cleaning sheets of the respective examples are excellent in dust collecting property and excellent in following property to the floor surface.

DESCRIPTION OF SYMBOLS 10 Cleaning sheet 11 Base material sheet 12 Cleaning part 20 Fiber assembly 30 Support part 31 Supporting thread 40 Garbage collection part 41 Short fiber assembly

Claims (8)

The fiber assembly is a cleaning sheet in which a cleaning part is formed by being bonded to at least one surface of the base sheet,
The fiber assembly includes a support portion formed by twisting a plurality of support yarns, and a plurality of support portions supported by the support portions by twisting the support yarns along the length direction of the support yarns. It consists of a garbage collector,
The said waste collection part consists of a plurality of short fibers, and the cleaning sheet which consists of a short fiber aggregate which has a fiber freedom degree which can hold | maintain garbage between fibers. The short fiber aggregate is a string, and the string-like short fiber aggregate is twisted together with the supporting yarn to constitute a twisted yarn structure,
2. The twisted yarn structure, wherein the short fiber aggregate is twisted together with the supporting yarn so that a plurality of loop-shaped slack portions are formed along the length direction of the twisted yarn structure. Cleaning sheet. A plurality of the short fiber aggregates;
The cleaning sheet according to claim 1, wherein each short fiber assembly has two end portions, and each end portion is supported by the support portion to form a loop-like slack portion between the both end portions. . A plurality of the short fiber aggregates;
The cleaning sheet according to claim 1, wherein each short fiber aggregate has two end portions and is supported by the support portion at a position between both end portions. A plurality of the short fiber aggregates;
The cleaning sheet according to claim 1, wherein each short fiber aggregate has two end portions and is supported by the support portion at one end portion.   The cleaning sheet according to any one of claims 1 to 5, wherein the short fiber aggregate is made of a weak twisted yarn of several tens of T / m or less.   The cleaning sheet according to any one of claims 1 to 6, wherein the plurality of fiber assemblies extend in the same direction and are arranged linearly.   The cleaning sheet according to any one of claims 1 to 6, wherein the plurality of fiber assemblies extend in the same direction and are arranged in a wavy line.

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