JP2011224069A - Cleaning sheet and cleaning tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning sheet and a cleaning tool, capable of effectively and uniformly wiping off dust even when the adhesion degree of a surface to be cleaned and the dust varies and capable of suppressing the formation of a fiber lump for a part of fibers used frequently for entangling and removing the dust.SOLUTION: As the cleaning sheet 1, by folding and piling up fiber bundled bodies 11 in which many fibers 3 are arranged side by side and bonded in a direction crossing the flowing direction of the fibers 3 to form a bonding line 5, a folded part 4 extending along the flowing direction of the fibers 3 is formed, and the overlap structure of fiber layers 7, 7 connected at the folded part 4 and piled up with each other is formed. One part whose origin is at least the folded part 4 of at least one of the fiber layers 7, 7 piled up with each other is configured such that a distance from the bonding line 5 to the inner surface side ridge lines 13, 13 of the fiber layers 7, 7 is gradually different as separating from the folded part 4 along the extending direction of the bonding line 5 with the folded part 4 as the origin.

Description

  The present invention relates to a cleaning sheet and a cleaning tool.

  As a cleaning tool used to entangle fine dust adhering to the surface to be cleaned such as desks, shelves, keyboards and monitors of personal computers, etc., a tool that fixes a flexible fiber bundle to a jig has been proposed. (Patent Document 1).

  Specifically, the cleaning tool of Patent Document 1 fixes a flexible fiber bundle formed by aligning a plurality of fibers to a non-woven fabric base fabric, and then bundles the fiber bundle and the base fabric and ties the central portion thereof. It is bound to form a tightly bound structure, and then cut at both sides of the tightly bound structure at a certain length to loosen the fibers to create a bulky raised state, and the raised part has a spherical appearance It is comprised so that it may exhibit.

JP 2008-55106 A

  Although the cleaning tool of patent document 1 takes up dust with the fiber part in a raising state, since the part in the raising state is formed in a spherical shape, the fiber in the raising state is brought into contact with the surface to be cleaned. The contact state between the fibers formed in this case and the surface to be cleaned is the same for any fiber, and it is difficult to change the contact state in various ways. However, since there is usually a difference in the strength of the adhesion of dust to the surface to be cleaned with respect to a large number of dust adhering to the same surface to be cleaned, the contact between the fiber and the surface to be cleaned is already described. The states are preferably diverse. For this reason, in the cleaning tool disclosed in Patent Document 1, there is a possibility that dust remains unentangled depending on the degree of variation in the strength of adhesion of dust to the surface to be cleaned. Moreover, in the cleaning tool of patent document 1, the fiber part frequently used for the entanglement of dust tends to be strong in the entanglement between the fibers, and the entangled fibers form a hairball that is a lump of fibers. There is also a risk of reducing the entanglement capability of dust.

  In view of the above problems, the present invention makes it possible to effectively and evenly wipe off dust even when the degree of adhesion between the surface to be cleaned and the dust varies. It aims at providing the sheet | seat for cleaning which can suppress formation of a fiber lump about the part of the fiber used, and a cleaning tool.

In the present invention, (1) a bent portion extending along a fiber flow direction is formed by bending and overlapping a fiber bundle formed by joining a large number of fibers and joining them in a direction crossing the flow direction of the fibers to form a joining line. And forming an overlapping structure of fiber layers that are connected to each other at the bent portion and overlap each other,
The distance from the joining line to the inner surface side ridge line of the fiber layer is at least one of the fiber layers that overlap each other starting from the bent part. A cleaning sheet, characterized in that the cleaning sheet is configured so as to gradually change as it leaves.
(2) The distance from the joining line to the inner surface side ridge line of at least one of the fiber layers that overlap each other is the direction in which the joining line extends from the bending part as the origin. The cleaning sheet according to (1), wherein the cleaning sheet is configured to gradually increase as the distance from the bent portion increases.
(3) In the above (1) or (2), at least one of the fiber layers that overlap each other is a part starting from at least the bent portion, and the fiber layers that overlap each other partially overlap in the fiber flow direction. The cleaning sheet,
(4) A belt-like bag body is interposed between the fiber layers that overlap each other, and a space portion that opens at one end edge in the longitudinal direction of the bag body and communicates with the outside of the cleaning sheet is formed in the bag body. The cleaning sheet according to any one of (1) to (3), wherein the bag body is disposed so that a depth direction of the space portion extends along a direction in which the joining line extends.
(5) A cleaning tool obtained by inserting a handle into the space of the bag according to (4) above,
(6) The gist is the cleaning tool according to (5) above, in which fibers constituting the fiber layer of the cleaning sheet are raised.

  According to the present invention, even when there is a variation in the degree of adhesion between the surface to be cleaned and the dust, the dust can be effectively and uniformly wiped, and the fibers frequently used for entanglement of dust. Thus, the cleaning sheet and the cleaning tool that can suppress the formation of the fiber lump are obtained.

(A) It is a schematic plan view for showing typically one of the Examples of the cleaning sheet of the present invention. (B) About one of the Examples of the cleaning sheet of this invention, it is a schematic schematic diagram for showing typically the state which looked at the cleaning sheet from the back side of the cleaning sheet. (C) About one of the examples of the cleaning sheet of the present invention, it is a schematic diagram for showing typically the state of the left side of the cleaning sheet. (A) It is a general | schematic disassembled perspective view for showing typically the arrangement | positioning relationship of the fiber bundle body and base material sheet which comprise the cleaning sheet | seat of this invention. (B) It is a schematic plan view for demonstrating a fiber bundle. (A) It is process sectional drawing for demonstrating the process of manufacturing one of the Examples of the sheet | seat for cleaning of this invention. (B) It is process sectional drawing for demonstrating the process of manufacturing one of the Examples of the cleaning sheet of this invention. (C) It is process sectional drawing for demonstrating the process of manufacturing one of the Examples of the sheet | seat for cleaning of this invention. (D) It is process sectional drawing for demonstrating a part of process of manufacturing one of the other Examples of the cleaning sheet of this invention. (A) It is a schematic plan view for showing typically one of the other Examples of the cleaning sheet of the present invention. (B) It is a cross-sectional schematic diagram for demonstrating typically the aa line cross section of FIG. 4 (A). (A) It is a plane schematic diagram which shows typically the example of the laminated structure of the fiber bundle body and base material sheet which comprise the sheet | seat for cleaning of this invention. (B) It is a plane schematic diagram which shows typically the example of the laminated structure of the fiber bundle body and base material sheet which comprise the sheet | seat for cleaning of this invention. (C) It is a plane schematic diagram which shows typically the example of the laminated structure of the fiber bundle body and base material sheet which comprise the sheet | seat for cleaning of this invention. It is a perspective schematic diagram which shows typically the cleaning tool using the sheet | seat for cleaning of this invention.

  The cleaning sheet 1 of the present invention will be described with reference to the drawings. In this specification, unless otherwise specified, when the cleaning sheet, the fiber layer overlap body, the fiber bundle body, and the bag body are referred to as left and right, the direction to specify the left and right is the fiber flow direction (in FIG. 1). (A) is a direction along the arrow X, and the arrow X indicates the right direction). In addition, when referring to the front and rear of the cleaning sheet, the fiber layer overlapping body, and the like, the direction for specifying the front and rear is the direction from the opening forming the handle insertion port to the bent portion (the direction along arrow Y in FIG. 1A). And the arrow Y indicates the forward direction).

(Cleaning sheet 1)
The cleaning sheet 1 of the present invention includes a fiber layer overlapping body 2 and a bag body 6. The fiber layer overlap body 2 is formed using a fiber bundle 11 as shown in FIG.

(Fiber bundle 11)
As shown in FIGS. 2A and 2B, the fiber bundle 11 forms a bonding line 5 in a fiber assembly (sometimes referred to as a web) in which the fibers 3 are arranged in the same flow direction. Do it. The joining line 5 is formed in a substantially straight shape by joining the fibers 3 constituting the web to each other in a direction crossing the flow direction of the fibers 3. At this time, the direction in which the joining line 5 extends is preferably orthogonal to the flow direction of the fibers 3. The fiber bundle 11 is a portion up to a predetermined position (positions Y1 and Y2) (FIGS. 2 (A) and 2 (B)) that is directed outward along a direction in which the joining line 5 extends, starting from a position that forms a bending axis R described later. The position of the bending axis R at a portion N indicated by diagonal lines (a portion from the joining line 5 to the free end of the fiber 3 in the left-right direction and from the position Y1 to the position Y2 in the extending direction of the joining line 5)) The length of the fiber 3 from the joining line 5 to the free end of the fiber 3 is configured to be gradually different toward the outside along the extending direction of the joining line 5. In the example of FIG. 2, the length of the fiber 3 from the joining line 5 to the free end of the fiber 3 is equal to each of the portions N (N1, N2) existing on both the left and right sides of the joining line 5 in the fiber bundle 11. The length gradually increases from the position of the bending axis R toward the outside along the direction in which the joining line 5 extends. That is, with respect to positions T1 and T2 having different distances away from the bending axis R toward the outside along one direction in which the joining line 5 extends from the bending axis R (position T1 closer to the bending axis R and position T2 farther away). The length H2 of the fiber 3 from the joining line 5 to the free end of the fiber 3 at the position T2 is longer than the length H1 of the fiber 3 from the joining line 5 to the free end of the fiber 3 at the position T1.

  In the example of FIG. 2, the portion N exists on both the left and right sides of the fiber bundle 11 with the bonding line 5 as the center, but is not limited thereto. The part N should just exist in the right-and-left at least one side centering on the joining line 5 among the fiber binding bodies 11. That is, at least one of the portions N1 and N2 may be present, and at least one of the positions Y1 and Y2 only needs to be present. When the position Y1 exists and the position Y2 does not exist, the part N is formed by a part specified in the range from the bending axis R to the position Y1. When the position Y2 exists and the position Y1 does not exist, the part N is formed by a part specified in the range from the bending axis R to the position Y2.

  In the cleaning sheet 1, when the portion N is present on both the left and right sides of the fiber bundle 11 with respect to the bonding line 5, the position N1 that specifies the range of the portion N is formed on the left side with respect to the bonding line 5. The joint line 5 extends for both the position Y1 (Y1a) for designating the part N (N1) and the position Y1 (Y1b) for designating the part N (N2) formed on the right side with the joint line 5 as the center. However, the present invention is not limited to this, and Y1a and Y1b may be different from each other in the distance away from the bending axis R. The same applies to the position Y2. That is, Y2a and Y2b may have different distances from the folding axis R.

  Further, the positions Y1 and Y2 of the cleaning sheet 1 are not limited to the case where the positions Y1 and Y2 are located between the side edge of the fiber bundle 11 and the bending axis R as shown in the example of FIG. The positions Y <b> 1 and Y <b> 2 may be independently at the position of the side edge of the fiber bundle 11. In this case, the fiber bundle 11 includes fibers 3 from the bending line R to the side edge position of the fiber bundle 11 toward the outside along the extending direction of the bonding line 5 and from the bonding line 5 to the free end of the fiber 3. Are configured to gradually differ in length.

(Fiber 3)
Examples of the fibers 3 constituting the fiber bundle 11 include natural fibers such as cotton and wool, synthetic fibers such as polyethylene, polypropylene, polyethylene terephthalate, nylon, and polyacryl, core-sheath fibers, sea-island fibers, side-by-side fibers, and the like. However, when the fibers are partially heat-bonded and bonded, the core-sheath type composite fiber whose core is made of polypropylene and whose sheath is made of polyethylene is excellent in the polyethylene constituting the sheath. This is preferable because it has both the heat-fusibility and the strength of polypropylene constituting the core. It is preferable that fibers 3 constituting the fiber bundle 11 have a diameter of about 0.01 mm to 0.3 mm in diameter, because dust can be appropriately entangled. The fiber bundle 11 may be composed of only fibers having the same material, thickness, color, etc., or may be composed of two or more different types of fibers. The length of the fibers 3 of the fiber bundle 11 is preferably in the range of about 3 cm to 15 cm.

  The joint line 5 of the fiber bundle 11 can be formed by a method of forming by heat fusion, or by a method of bonding the fibers 3 with an adhesive. As the adhesive, a two-component curable adhesive, a thermoplastic resin adhesive, an elastomer adhesive, a thermosetting resin adhesive, an instantaneous adhesive, a hot melt adhesive, and the like can be used. A hot-melt adhesive is preferable from the viewpoint of rapid bonding work by heating and cooling, and a solution-type or emulsion-type thermoplastic resin from the viewpoint of obtaining a deep adhesive layer with good fiber permeability. A system adhesive or an elastomer adhesive is preferable.

(Fiber layer overlap body 2)
The fiber layer overlapping body 2 is formed by bending and overlapping the fiber bundle 11 with the bending axis R as an axis. At this time, the fiber layer overlapping body 2 is formed with a bent portion 4 extending along the flow direction of the fiber 3 at the tip at the position of the bending axis R, and the fiber layers 7 (7a, 7b) connected at the bent portion 4. ) Is formed. That is, the fiber layers 7 a and 7 b are continuous at the respective one ends, and the continuous portion forms the bent portion 4. At this time, the fiber layers 7a and 7b overlap each other to form an overlapping structure. In the overlapping structure formed by the fiber layers 7a and 7b, the ridge line on the opposite surface side (inner surface side ridge line 13 (13a)) in one fiber layer 7a and the inner surface side ridge line 13 (13b) in the other fiber layer 7b. ) Substantially coincides with each other (FIGS. 1A and 1B). The fiber layers 7a and 7b are bonded to the bag 6 and fixed in a state of facing each other, and the overlapping structure is maintained.

  The fiber layer 7 of the fiber layer overlap body 2 is a portion from the bent portion 4 to a predetermined position K with a predetermined distance along the direction in which the joint line 5 extends with the bent portion 4 as a starting point (FIG. 1A). In the portion M), the distance from the bonding line 5 to the inner surface side ridge line 13 of the fiber layer 7 is gradually changed as the distance from the bent portion 4 is increased along the extending direction of the bonded line 5 starting from the bent portion 4. It is configured. The part M is a part from the joining line 5 to the outer edge part of the fiber layer 7 in the left-right direction, and is spaced from the bent part 4 along the direction in which the joining line 5 extends with the bent part 4 as a starting point. This is a portion up to a predetermined position. In the example of FIG. 1, the portion M is in any of the fiber layers 7 a and 7 b facing each other (FIG. 1C) and on either side of the left and right inner side ridgelines 13 and 13 centering on the joint portion 5. (FIG. 1 (A)). In a plan view of the fiber layer overlap body 2, the contour shape of the portion where the two portions M (Ma) in one fiber layer 7 are combined, and the portion where the two portions M (Mb) in the other fiber layer 7 are combined The outline shape matches. In FIG. 1A, the two parts Mb are hidden behind the two parts Ma.

  In the example of FIG. 1 (A), for the portions M and M formed on the left and right with the joint 5 as the center, a position K (Ka1) for designating the portion M formed on the left with the joint 5 as the center (FIG. 1, and a position K (Ka 2) (indicated by an arrow in FIG. 1) that designates a portion M formed on the right side with respect to the joint 5 is indicated as a joint line 5 from the bent portion 4. It is a position separated by the same distance along the extending direction.

  Further, in any of the left and right portions M, M centering on the joint portion 5, the distance from the joint line 5 to the inner surface side ridge line 13 of the fiber layer 7 is the direction in which the joint line 5 extends from the bent portion 4 as a starting point. As the distance from the bent portion 4 increases, the length gradually increases. That is, in any portion M, the joining line at a position farther from the bent portion 4 than the distance (L1) from the joining line 5 at a position relatively close to the bent portion 4 to the inner surface side ridge line 13 of the fiber layer 7. The distance (L2) from 5 to the inner surface side ridge line 13 of the fiber layer 7 is longer.

  Here, the distance from the bonding line 5 to the inner surface side ridge line 13 of the fiber layer 7 indicates the distance between the bonding line 5 and the inner surface side ridge line 13, and the position of the bent portion 4 is the starting point of the fiber layer overlapping body 2. It is determined according to the specified position specified by specifying the distance away from the bent portion 4 in the front-rear direction. As for the cleaning sheet 1, the designated position gradually moves away from the bent portion 4 along the extending direction of the bonding line 5 starting from the position of the bent portion 4. The intervals also gradually become different values.

  In the cleaning sheet 1 of the present invention, the fiber layer overlapping body 2 is at least a part of at least one of the fiber layers 7 (7a, 7b), and the distance from the joining line 5 to the inner surface side ridge line 13 of the fiber layer 7 is. What is necessary is just to be comprised so that it may gradually change as it leaves | separates from the bending part 4 along the direction where the joining line 5 extends by making the bending part 4 into the starting point. Therefore, the number and range of formation portions of the portion M are not limited to the example of FIG. The part M should just be formed about any one of the fiber layers 7 (7a, 7b) facing each other, and about either one of the left and right inner surface side ridgelines 13, 13 centering on the joint 5 of the fiber layer 7. It is sufficient that it is formed at least. Further, the portion M may be formed over one or both of the fiber layers 7a and 7b.

  When the part M is formed on both sides of the left and right inner side ridge lines 13 and 13 centering on the joint part 5 of the fiber layer 7, the positions Ka1 and Ka2 designating the part M on the left and right side of the joint part 5 are respectively Although it exists, the positional relationship between the positions Ka1 and Ka2 is not limited to the example in FIG. That is, the positions Ka1 and Ka2 may be positions separated from the bent portion 4 by different distances along the direction in which the joining line 5 extends. The same can be said about the positional relationship between the positions Ka1 and Ka2 for the portion M formed in any of the fiber layers 7a and 7b facing each other.

  Moreover, in the part M, although the distance from the joining line 5 to the inner surface side ridgeline 13 of the fiber layer 7 is gradually different, the pattern (ridgeline pattern) of the different direction is not limited to said example. In the part M, the distance from the bonding line 5 to the inner surface side ridge line 13 of the fiber layer 7 may gradually become shorter as the distance from the bent part 4 increases in the direction in which the bonded line 5 extends with the bent part 4 as a starting point. Further, in the part M, the distance from the joining line 5 to the inner side ridge line 13 of the fiber layer 7 gradually decreases as the distance from the bending part 4 increases in the extending direction of the joining line 5 starting from the folded part 4. The lengthened part may be combined. Furthermore, when the part M is formed on both the left and right sides centering on the joint part 5 of the fiber layer 7, the ridge line pattern in the part M formed on the left side centering on the joint part 5 of the fiber layer 7 and the fiber layer 7 may be the same or different from the ridge line pattern in the portion M formed on the right side with the joint portion 5 as the center. For example, in the part M formed on the left side with the joint 5 of the fiber layer 7 as the center, the distance from the joint line 5 to the inner surface side ridge line 13 of the fiber layer 7 extends from the bent part 4 to the joint line 5. In the portion M formed on the right side with the joint 5 of the fiber layer 7 as the center, the distance from the joint line 5 to the inner surface side edge line 13 of the fiber layer 7 is gradually increased as the distance from the bent portion 4 increases. 4 may be gradually shortened as the distance from the bent portion 4 increases in the direction in which the joining line 5 extends, starting from 4.

  However, as shown in the example shown in FIG. 1A, the cleaning sheet 1 is formed with the portions M on both the left and right sides with the joint portion 5 of the fiber layer 7 as the center, and in any portion M, When the distance from the joint line 5 to the inner surface side ridge line 13 of the fiber layer 7 is configured to gradually increase as the distance from the bent part 4 increases along the direction in which the joint line 5 extends with the bent part 4 as a starting point, The following effects can be obtained. First, when looking at the cleaning tool having a handle attached to the cleaning sheet 1, even if the fibers 3 of the fiber layer overlapped body 2 are raised, the shape becomes tapered toward the tip (FIG. 6). Then, in the cleaning tool, in the portion where the fiber 3 near the tip of the cleaning tool used particularly frequently for entanglement of dust at the time of cleaning exists, the fiber 3 can be freely released from the joint portion 5 starting from the tip of the cleaning tool. A state in which the distance to the end is gradually different is formed in any direction of 360 degrees around the handle. By the way, in the cleaning tool, there is a great risk of generation of a fiber lump due to the entanglement of fibers with respect to the fibers forming the portion used for entanglement of dust with high frequency during cleaning. In this regard, in the cleaning sheet 1, the portion of the fiber 3 that is frequently used for entanglement of dust at the time of cleaning is present, and the tip of the cleaning tool is the starting point in any direction of 360 degrees around the handle. Since the distance from the joining part 5 to the free end of the fiber 3 is gradually different, the possibility of causing the entanglement of the fibers 3 used frequently is reduced. For this reason, in the cleaning tool which attached the handle to the cleaning sheet 1 shown in FIG. 1 (A), the possibility of generation of fiber masses such as generation of pills is effectively suppressed.

  In the example of FIG. 1, the fiber layers 7 a and 7 b constituting the fiber layer overlap body 2 are overlapped by folding the fiber bundle 11 with the bending axis R as an axis. In addition, in the cleaning tool sheet 1 of the present invention, the fiber layers 7a and 7b may partially overlap each other. By using the fiber bundle 11 that is formed in an asymmetric shape with the bending axis R as an axis, the fiber layer overlapping body 2 having an overlapping structure of the partially overlapping fiber layers 7a and 7b can be formed. it can. Specifically, the fiber layer overlapping body 2 having the overlapping structure of the partially overlapping fiber layers 7a and 7b is, for example, a fiber bundle 11 as shown in FIGS. 5 (A) to 5 (C). In the plan view of the bundle 11, it can be formed by using a trapezoid, a parallelogram, a gentle S-shape or the like.

  When the fiber layers 7a and 7b partially overlap, as shown in FIGS. 4 (A) and 4 (B), the inner surface side formed on the fiber layer overlapping body 2 on the opposite surface side of the fiber layers 7a and 7b. A portion where the ridge lines 13a and 13b are shifted from each other and do not coincide with each other (the shifted portion 24) can be formed. That is, the inner surface side ridge line 13 in the part M on at least one side of the fiber layers 7a and 7b does not coincide with the inner surface side ridge line 13 in the part of the fiber layer 7 on the other side facing the part M. At this time, a step is formed in the fiber layer overlapping body 2 by the formation of the shift portion 24 (FIG. 4B). Thus, by forming a level | step difference in the fiber layer overlap body 2, the contact state of the fiber 3 of the sheet | seat 1 for cleaning and the to-be-cleaned surface can be various, and the dust adhering to the to-be-cleaned surface can be made. It is possible to effectively suppress untangling.

(Bag 6)
The bag body 6 is formed in a band shape in plan view, and is interposed between the fiber layers 7 and 7 connected to each other at the bent portion 4 (FIGS. 1A and 1B). The bag body 6 is opened at one end edge in the longitudinal direction to form an opening portion 9 and a space portion 10 that communicates with the outside of the cleaning sheet 1 at the opening portion 9. Further, in the cleaning sheet 1, the bag body 6 is disposed between the fiber layers 7 and 7 so that the depth direction of the space portion 10 extends along the direction in which the joining line 5 extends, and the bag body 6 is formed of the fiber layer 7, 7 is bonded to form an adhesive portion 8. In the cleaning sheet 1, the bonding portion 8 may be formed in an appropriate formation pattern, and the formation position and the number of formation locations on the bag body 6 can be set as appropriate, but FIG. ), The adhesive portions 8 are formed in a substantially continuous linear pattern, and are formed at a total of four locations on the left and right side edge portions of the outer surface of the bag body 6. Further, the four bonding portions 8 are formed so that the longitudinal direction thereof is along the direction in which the bonding line 5 extends.

  The bonding portion 8 is not limited to a continuous line shape, and may be formed in a dotted line shape. When the bonding part 8 is formed in a dotted line shape, the fiber 3 constituting the fiber layer 7 may be mixed with the fiber 3 having the bonding line 5 as a fixed end and the fiber 3 having the bonding part 8 as a fixed end. it can. If it carries out like this, the length of the fiber 3 will diversify more and generation | occurrence | production of the hair ball by the entanglement of the fiber 3 which comprises the fiber layer overlap body 2 at the time of cleaning can be suppressed more effectively.

  The mutual positional relationship between the bag body 6 and the fiber layer 7 may be appropriately set in the front-rear direction of the fiber layer overlapping body 2. The relative positional relationship between the bag body 6 and the fiber layer 7 may be a positional relationship in which the opening 9 of the bag body 6 and the peripheral portions of the fiber layers 7 and 7 are aligned, or the fiber layer 7a, The positional relationship may be such that the opening 9 of the bag 6 is inside the peripheral edge of 7b, and the opening 9 of the bag 6 is outside the peripheral edge of the fiber layers 7a and 7b. Such a positional relationship may be used.

  Although the magnitude | size of the bag body 6 can be set suitably, in the state in which the bag body 6 is interposed between the fiber layers 7a and 7b, the left and right side edges of the bag body 6 are the fiber layer overlapping bodies 2. What is necessary is just to be a magnitude | size which is settled inside the inner surface side ridgeline 13 of the fiber layer 7 in the left-right direction.

  2A, 3C, and 5A to 5C, the bag body 6 has a longitudinal direction of the base sheet 12 at both side edges in the width direction of the strip-shaped base sheet 12. The adhesive can be applied along the surface of the adhesive, and the adhesive can be formed by bending the adhesive application surface inward and overlapping and bonding the side edges. At this time, in the bag body 6, the non-adhesive edge forms the opening 9, and the space 10 that communicates with the outside from the opening 9 is formed by the sheet that forms the base sheet 12. As an adhesive used to form the bag body 6, an adhesive that can be used for bonding the fibers 3 as described above can be used. For example, a two-component curable adhesive, a thermoplastic resin-based adhesive Agents, elastomer adhesives, thermosetting resin adhesives, instantaneous adhesives, hot melt adhesives, and the like can be used.

  In forming the bag body 6, when the base sheet 12 is folded and overlapped, the edges of the base sheet 12 may be joined together to form a flush state, or the end of the base sheet 12. The edges may be offset from each other.

  In addition, the bag body 6 is not limited to what is mentioned in said example, You may consist of a base-sheet sheet piece of 2 sheets of rectangular strips. In this case, the bag body 6 is prepared as follows. Two rectangular strip-shaped base sheet pieces are prepared, and an adhesive is applied along the edge portion of the base sheet piece to three side portions excluding the one side edge portion in the longitudinal direction of the base sheet piece. Then, the two base material sheets coated with the adhesive are overlapped with the adhesive application surfaces facing each other so that the longitudinal directions of the base material sheet pieces are aligned. At this time, the two base sheet sheets are brought together with each other at one side edge part in the longitudinal direction of the base sheet piece to which the adhesive is not applied. The bag body 6 can be formed by adhering both base material sheets in this manner.

  Further, in the cleaning sheet 1, a tubular body may be interposed between the fiber layers 7 a and 7 b instead of the bag body 6. This cylindrical body can be formed using two strip-shaped base sheet pieces. For example, two strip-shaped base sheet pieces are prepared, and an adhesive is applied along the longitudinal direction of the base sheet piece on both side edges in the width direction of the base sheet piece. A cylindrical body can be formed by making the surfaces face each other and aligning and bonding the longitudinal directions of the base sheet pieces.

(Base sheet 12, base sheet piece)
Although the base material sheet 12 and the base material sheet piece are not particularly limited, such as a woven fabric or a non-woven fabric, a non-woven fabric formed by entanglement of a large number of fibers is preferable. As the nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a thermal bond nonwoven fabric, an air-through nonwoven fabric, a point bond nonwoven fabric and the like can be used, and a spunbond nonwoven fabric and a thermal bond nonwoven fabric are preferable. Examples of the fibers constituting the nonwoven fabric include resin fibers such as polypropylene, polyethylene, polyethylene terephthalate, and the like, which are sheath-core type or side-by-side type composite fibers.

(Manufacturing method of cleaning sheet 1)
Next, a method for manufacturing the cleaning sheet 1 will be described.

  A large number of long fibers 14 are aligned in parallel in the longitudinal direction of the fibers 14 and bundled to obtain a long belt-like fiber assembly sheet (web sheet 15). Next, the web sheet 15 is spaced (appropriately for each interval), and intersects the flow direction (longitudinal direction) of each fiber constituting the web sheet 15 (direction crossing the fibers) (for example, long length). The long fiber bonding line 16 is formed by bonding in a direction perpendicular to the longitudinal direction of the fibers 14 (FIG. 3A). Then, the strip | belt-shaped base material sheet 12 is arrange | positioned so that the long fiber joining line 16 may be covered. Here, an adhesive such as a hot melt adhesive is applied to the base sheet 12 on the surface facing the web sheet 15. The adhesive is applied linearly along the longitudinal direction of the base sheet 12 to the side edge in the width direction of the base sheet 12 to form a linear application portion on the base sheet 12. The base material sheet 12 is arrange | positioned on the web sheet 15 so that the direction where a linear application part extends may follow the direction where the long fiber joining line 16 is extended. Thereby, the base material sheet 12 is bonded to the web sheet 15, and the linear application portion forms the sheet bonding portion 17 (FIG. 3B). The web sheet 15 is cut in a direction crossing the flow direction of the fibers 14 between the long fiber bonding lines 16 adjacent to each other in the longitudinal direction of the long fibers 14. The web sheet 15 is cut with a predetermined cutting pattern. In FIG. 3B, the cutting pattern of the web sheet 15 is indicated by reference numeral 18. Thereby, as shown in FIG.3 (C), the laminated structure 19 of the fiber binding body 11 and the base material sheet 2 is obtained. Further, in the laminated structure 19, an adhesive such as a hot melt adhesive is applied to both side edges along the longitudinal direction of the base sheet 2 on the exposed surface of the base sheet 2. Then, the laminated structure 19 is bent in the direction of the arrow P so that the fiber bundle 11 is arranged outside the base sheet 2 with the bending axis R as an axis, and the adhesive-coated surface of the base sheet 2 and the fiber binding The body 11 is overlapped. Thereby, the bent portion 4 is formed, the overlapping structure of the fiber layers 7a and 7b is formed, the bag body 6 is further formed, and the bag body 6 is interposed between the fiber layers 7a and 7b. A state is also formed. At this time, the long fiber bonding line 16 forms the bonding line 5, and the sheet bonding portion 17 forms the bonding portion 8. In this way, the cleaning sheet 1 is manufactured.

  In addition, said manufacturing method was demonstrated taking the manufacturing method of the sheet | seat 1 for cleaning shown to FIG. Therefore, in manufacturing the cleaning sheet 1 of the present invention, the cutting pattern of the web sheet 15 is not limited to the pattern shown in FIG. It is suitably selected according to the shape of the fiber bundle 11 to be obtained. For example, when the trapezoidal fiber bundle 11 is to be formed, the cutting pattern is so as to obliquely cross the flow direction of the long fibers 14 as indicated by reference numeral 18 in FIG. Any pattern that cuts the web sheet 15 in an oblique direction may be used. In this case, as the cleaning sheet 1, as shown in FIGS. 4 (A) and 4 (B), the fiber layers 7 and 7 constituting the fiber layer overlapping body 2 are partially overlapped. can get.

  When manufacturing the cleaning sheet 1 of the example of FIGS. 1 and 2, the position of the bending axis R when the fiber bundle 11 is folded is the center position of the fiber bundle 11 in the direction crossing the flow direction of the fibers 3. It has become. When the fiber bundle 11 is bent about the bending axis R, the fiber bundle 11 is half-folded and the edges of the fiber bundle 11 are brought together. For this reason, the fiber layers 7 a and 7 b constituting the formed fiber layer overlap body 2 are aligned with each other at the edge positions in the direction crossing the flow direction of the fibers 3. In this regard, in the cleaning sheet 1 of the present invention, the positions of the edges of the fiber layers 7 and 7 in the direction crossing the flow direction of the fibers 3 may be shifted from each other. Therefore, the bending axis R may be set to a position shifted from the center position of the fiber bundle 11 in a direction crossing the flow direction of the fibers 3. Specifically, for example, as shown in FIG. 5A, the bending axis at the time of bending the fiber bundle 11 may be changed to an axis Ra at a position slightly shifted from the bending axis R in parallel.

(Cleaning tool 20 using the cleaning sheet 1)
As shown in FIG. 6, the cleaning sheet 1 is used as a cleaning tool 20 with a handle 21 attached thereto. That is, the opening 9 of the bag body 6 is used as the insertion portion of the handle 21, and the cleaning sheet 1 is attached to the handle 21 by inserting the handle 21 into the cleaning sheet 1 from the opening 9 toward the back of the space portion 10. Thus, the cleaning tool 20 is obtained. The shape and material of the handle 21 are not particularly limited as long as the handle 21 can be attached to the cleaning sheet 1. The shape of the handle 21 may be a rod-shaped body, or may be a tongue-shaped support portion formed at the tip of a rod-shaped gripping portion. The material of the handle 21 can be plastic, metal, wood, etc., but plastic is preferable in terms of light weight and low cost. When plastic is used as a material, polyolefin resins such as polyethylene resins and polypropylene resins are preferable.

  The cleaning tool 20 may be configured such that the cleaning sheet 1 is detachably attached to the handle 21, or may be formed by bonding the cleaning sheet 1 and the handle 21 to each other. The cleaning sheet 1 and the handle 21 are bonded by applying an adhesive in advance to a portion of the handle 21 to be inserted into the space 10 and inserting the handle 21 into the cleaning sheet 1 to adhere to each other. It can be realized concretely. In addition, the cleaning tool 20 arranges the handle 21 coated with the adhesive on the laminated structure 19 formed when the cleaning sheet 1 is manufactured so as not to cross the bending axis R. Can also be obtained by bending with the bending axis R as the axis.

(Use of cleaning tool 20)
The cleaning tool 20 preferably uses the fiber layer overlapping body 2 as a bulky raised state by raising the fibers 3 constituting the fiber layer overlapping body 2 of the cleaning sheet 1 and raising the entire fiber layer overlapping body 2 Is done. As a method for raising the fiber layer overlap body 2 in a raised state, a method of air blowing the fiber layer overlap body 2 can be preferably used. The air blow can be carried out by appropriately using a conventionally known air blow device. The method of setting the fiber layer overlap body 2 to the raised state may be performed at any time before and after the handle 21 is inserted into the cleaning sheet 1. What raised the fiber layer overlapping body 2 is used as a cleaning tool part, and the cleaning tool 20 is formed by inserting the handle 21 into the cleaning tool part.

(Another example of the cleaning tool 20 of the present invention)
In the cleaning tool 20 of the present invention, when the handle 21 and the cleaning sheet 1 are adhered to each other, the bag body 6 between the fiber layers 7a and 7b of the fiber layer overlapping body 2 is removed. It may be. That is, in the cleaning tool 20 of the present invention, the handle 21 is inserted so as to be in direct contact with the fiber layers 7a and 7b of the fiber layer overlapping body 2, and the handle 21 is directly bonded to the fiber layers 7a and 7b. It may be. In this case, the fiber layers 7a and 7b are fixed to the handle 21 so as to face each other.

  Such a cleaning tool can be manufactured as follows.

  First, an adhesive is applied to the peripheral surface of the handle 21 for a predetermined range starting from one end of the rod-shaped handle 21 and directed to the other end, and the adhesive is applied to the one end side and the other side of the handle 21 respectively. A part and an adhesive non-application part are formed. Next, the handle 21 is directly arranged on the fiber bundle 11 so as not to cross the bending axis R. At this time, the longitudinal direction of the handle 21 and the direction in which the joining line 5 extends are aligned. In addition, the adhesive-applied portion of the handle 21 and the fiber bundle 11 are in direct contact, and the adhesive-uncoated portion of the handle 21 is disposed outside the edge of the fiber bundle 11. Thereafter, the fiber bundle 11 is bent at the bending axis R. At this time, the bent portion 4 is formed, and the fiber layers 7a and 7b connected and overlapped with each other at the bent portion 4 are formed, the fiber layer overlapping body 2 is formed, and both of the fiber layers 7a and 7b are the handle 21. A bonded state is formed. And the adhesive agent non-application part of the pattern 21 will be in the state exposed to the outer side of the fiber layer overlap body 2. FIG. Thus, a structure in which the handle 21 is directly bonded between the fiber layers 7a and 7b is formed, and this structure forms a cleaning tool.

  The present invention is useful for entwining fine dust adhering to a surface to be cleaned such as a keyboard or a monitor of a personal computer.

DESCRIPTION OF SYMBOLS 1 Cleaning sheet 2 Fiber layer overlap body 3 Fiber 4 Bending part 5 Bonding line 6 Bag body 7 Fiber layer 8 Adhesion part 9 Opening part 10 Space part 11 Fiber united body 12 Base material sheet 13 Edge line 14 Long fiber 15 Web sheet 16 Long fiber bonding line 17 Sheet bonding part 18 Cutting pattern 19 Laminated structure 20 Cleaning tool 21 Pattern

Claims (6)

A folded portion extending along the flow direction of the fiber is formed by bending and stacking a fiber bundle formed by joining a large number of fibers and joining them in a direction crossing the flow direction of the fibers to form a joining line. It forms an overlapping structure of fiber layers that are connected and overlap each other,
At least a part of at least one of the fiber layers connected to each other at the bent portion and starting from the bent portion is a distance from the joining line to the inner side ridge line of the fiber layer. It is comprised so that it may change gradually as it leaves | separates from a bending part along, The cleaning sheet | seat characterized by the above-mentioned.   The distance from the joining line to the inner surface side ridge line of the fiber layer is at least one of the fiber layers that overlap each other starting from the bent part. It is comprised so that it may become long gradually as it leaves | separates, The sheet | seat for cleaning of Claim 1 characterized by the above-mentioned.   The cleaning sheet according to claim 1 or 2, wherein at least one of the fiber layers that overlap each other is a part starting from at least the bent portion, and the fiber layers that overlap each other partially overlap in the fiber flow direction.   A belt-shaped bag is interposed between the fiber layers that overlap each other, and the bag is formed with a space that opens at one end edge in the longitudinal direction of the bag and communicates with the outside of the cleaning sheet. The cleaning sheet according to any one of claims 1 to 3, wherein the bag body is disposed such that a depth direction of the space portion extends along a direction in which the joining line extends.   The cleaning tool formed by inserting a handle into the space of the bag body according to claim 4. The cleaning tool according to claim 5, wherein the fibers constituting the fiber layer of the cleaning sheet are raised.

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