US20240057840A1 - Cleaning wet wipe - Google Patents

Cleaning wet wipe Download PDF

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Publication number
US20240057840A1
US20240057840A1 US18/260,704 US202218260704A US2024057840A1 US 20240057840 A1 US20240057840 A1 US 20240057840A1 US 202218260704 A US202218260704 A US 202218260704A US 2024057840 A1 US2024057840 A1 US 2024057840A1
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United States
Prior art keywords
embossment
embossments
wet wipe
cleaning wet
cleaning
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Pending
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US18/260,704
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English (en)
Inventor
Yuhei YAMASAKI
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Daio Paper Corp
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Daio Paper Corp
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Assigned to DAIO PAPER CORPORATION reassignment DAIO PAPER CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YAMASAKI, Yuhei
Publication of US20240057840A1 publication Critical patent/US20240057840A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K7/00—Body washing or cleaning implements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges
    • A47L13/17—Cloths; Pads; Sponges containing cleaning agents
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/20—Mops
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/20—Mops
    • A47L13/24—Frames for mops; Mop heads
    • A47L13/254—Plate frames
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C23/00—Making patterns or designs on fabrics
    • D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/02—Moisture-responsive characteristics
    • D10B2401/021—Moisture-responsive characteristics hydrophobic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/02—Moisture-responsive characteristics
    • D10B2401/022—Moisture-responsive characteristics hydrophylic
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2509/00—Medical; Hygiene

Definitions

  • the present invention relates to a cleaning wet wipe.
  • the convexities are arranged in series with directions thereof on the paper (for example, directions of long axis directions) aligned in the cleaning wet wipe as described in Patent Document 1, parts where wiping is not performed by the convexities (so-called “wiping streaks”) may occur on a surface to be cleaned.
  • wiping streaks parts where wiping is not performed by the convexities
  • a user who has recognized the wiping streaks may determine that a chemical agent has run out and started to dry and discard the wipe even though the chemical agent still remains in the wipe, and the user may use unnecessarily many wipes.
  • An object of the present invention is to provide a cleaning wet wipe capable of reducing occurrence of wiping streaks when wiping cleaning is performed with the cleaning wet wipe attached to a cleaning tool having a head.
  • the invention according to aspect 1 is a cleaning wet wipe that is obtained by impregnating a base paper sheet with a chemical agent and is used with the cleaning wet wipe attached to a cleaning tool having a head, the cleaning wet wipe including:
  • the invention according to aspect 2 is the cleaning wet wipe according to aspect 1 including:
  • the invention according to aspect 3 is the cleaning wet wipe according to aspect 1 or 2, in which
  • the invention according to aspect 4 is the cleaning wet wipe according to any one of aspects 1 to 3, in which
  • the invention according to aspect 5 is the cleaning wet wipe according to any one of aspects 1 to 4, wherein
  • a cleaning wet wipe capable of reducing occurrence of wiping streaks when wiping cleaning is performed with the cleaning wet wipe attached to a cleaning tool having a head.
  • FIG. 1 This is a perspective view of a cleaning tool with a cleaning wet wipe according to a present embodiment attached thereto.
  • FIG. 2 This is a plan view illustrating the cleaning wet wipe according to the present embodiment.
  • FIG. 3 This is a sectional view of the III-III part in FIG. 2 .
  • FIG. 4 This is a plan view illustrating a cleaning wet wipe according to a modification example.
  • FIG. 5 A This is a plan view illustrating an embossment pattern according to an example.
  • FIG. 5 B This is a plan view illustrating an embossment pattern according to an example.
  • FIG. 5 C This is a plan view illustrating an embossment pattern according to a comparative example.
  • FIG. 5 D This is a plan view illustrating an embossment pattern according to a comparative example.
  • FIG. 1 is a diagram illustrating a state of the cleaning wet wipe 100 according to the present embodiment when it is used.
  • the cleaning wet wipe 100 is a sheet obtained by impregnating a base paper sheet obtained by performing ply processing (stacking) on a plurality of fiber assembly base materials with a chemical agent. Also, the cleaning wet wipe 100 is used for floor cleaning by being exchangeably attached to a cleaning tool 200 including a head 201 with a rectangular flat plate shape and a handle 202 attached to an upper surface of the head 201 .
  • the cleaning wet wipe 100 as illustrated in FIG. 2 covers a bottom surface of the head 201 of the cleaning tool 200 to form a cleaning surface, is bent at fold lines S along longitudinal edges 201 a of the head 201 of the cleaning tool 200 , is locked at the upper surface of the head 201 , and is thereby brought into an attached state.
  • the longitudinal edges 201 a indicate edges of the head 201 in the longitudinal direction. In other words, the longitudinal edges 201 a indicate two long edges from among the four edges of the rectangular head 201 .
  • the fiber assembly base material is a non-woven fabric manufactured by joining predetermined fibers by a known technology such as spun lace, air-through, air-laid, point bond, spun bond, or needle punch.
  • FIG. 3 is a sectional view taken along the line III-III in FIG. 2 .
  • the cleaning wet wipe 100 has, for example, a three-layer structure, surface layers on both sides are hydrophobic fiber layers 11 , 11 made mainly of hydrophobic fibers, and an intermediate layer is a hydrophilic fiber layer 12 made mainly of hydrophilic fibers. Additionally, boundary regions between the fibers of the hydrophobic fiber layers 11 , 11 and the fibers of the hydrophilic fiber layer 12 are configured such that mutual fibers are entangled with each other.
  • the chemical agent with which the hydrophilic fiber layer 12 as the intermediate layer has been impregnated is unlikely to be discharged to a surface to be cleaned that is adjacent to the hydrophobic fiber layer 11 as the surface layer, and the chemical agent can be selectively discharged to the floor surface. It is thus possible to suppress discharge of the chemical agent which is not effective for the cleaning.
  • hydrophilic fibers it is possible to use natural fibers such as cotton, pulp, or hemp, regenerated fibers such as rayon or cupra, or the like. Among these, it is particularly preferable to use pulp, rayon, polypropylene spun bond fibers (PPSB), or the like from the viewpoint of maintaining water retention properties.
  • natural fibers such as cotton, pulp, or hemp
  • regenerated fibers such as rayon or cupra, or the like.
  • pulp, rayon, polypropylene spun bond fibers (PPSB), or the like from the viewpoint of maintaining water retention properties.
  • hydrophobic fibers examples include polyolefin-based fibers such as polyethylene (PE), polypropylene (PP), or polyvinyl alcohol, polyester-based fibers such as polyethylene terephthalate (PET) or polybutylene terephthalate (PBT), acrylic-based fibers, and the like. These can be used alone, or two or more of them can be used in combination.
  • Examples of composite fibers of two or more kinds include a core-sheath type including a resin sheath with a relatively low melting point (low-melting point resin) and a resin with a relatively high melting point (high-melting point resin) as a core, a side-back type including a low-melting point resin and a high-melting point resin aligned in a predetermined direction, and the like.
  • a core-sheath type including a resin sheath with a relatively low melting point (low-melting point resin) and a resin with a relatively high melting point (high-melting point resin) as a core
  • a side-back type including a low-melting point resin and a high-melting point resin aligned in a predetermined direction, and the like.
  • the basis weight is preferably 30 g/m 2 to 120 g/m 2 and is particularly preferably about 60 g/m 2 to about 100 g/m 2 . If the basis weight is less than 30 g/m 2 , dirt retention capability becomes poor, the cleaning wet wipe 100 is likely to be twisted and become unstable at the time of cleaning. Also, if the basis weight exceeds 120 g/m 2 , flexibility becomes poor, and it becomes difficult to attach the cleaning wet wipe 100 to the cleaning tool 200 .
  • CNFs cellulose nanofibers
  • CNFs refer to cellulose fibers including cellulose fine fibers that are obtained by defibrating pulp fibers and typically have a nano-size (1 nm to 1000 nm) fiber width, and fibers with an average fiber width of not more than 100 nm are preferably used.
  • the CNFs may be in a state where they are uniformly impregnated in the thickness direction of the base paper sheet, and the CNFs are preferably in a state where the content of CNFs gradually increases from the center of the base paper sheet in the thickness direction toward the front surface and the rear surface. This is because the cleaning wet wipe 100 thus becomes unlikely to tear even when the cleaning surface or the like is strongly rubbed therewith.
  • BTMP bleached thermomechanical pulp
  • SGP stone ground pulp
  • PGW pressurized stone ground pulp
  • RGP refiner ground pulp
  • CGP thermoground pulp
  • TGP
  • the defibrating method is not limited thereto.
  • the CNFs after being subjected only to the mechanical treatment by the above defibrating method or the like that is, the CNFs not modified with a functional group have higher heat stability than those modified with a functional group such as a phosphate group or a carboxymethyl group, such CNFs can be used for a wider range of applications, but it is also possible to use the CNFs modified with a functional group such as a phosphate group or a carboxymethyl group in the present invention.
  • a chemical treatment such as carboxymethylation may be performed on the pulp fibers after being subjected to a defibrating treatment based on a mechanical method, for example, or an enzyme treatment may be performed thereon.
  • the CNF after being subjected to a chemical treatment include individualized CNFs (iCNFs) (single nano cellulose) with a diameter of 3 nm to 4 nm, such as TEMPO-oxidized CNFs, phosphorylated CNFs, and phosphite-esterified CNFs, for example.
  • CNFs after being subjected only to a chemical treatment or an enzyme treatment or CNFs obtained by performing a defibrating treatment based on a mechanical method on the CNFs after being subjected to a chemical treatment or an enzyme treatment may be used.
  • the cleaning wet wipe 100 is impregnated with a predetermined chemical agent containing adjuvants such as glycol ethers, a water-based detergent, an antiseptic, a disinfectant, a lower alcohol, and an organic solvent.
  • the cleaning wet wipe 100 is impregnated with 100% by mass to 500% by mass of chemical agent, and is preferably impregnated with 150% by mass to 300% by mass of chemical agent, with respect to the mass of the base paper sheet that is a base material of the cleaning wet wipe 100 .
  • the dried base paper sheet is impregnated with the chemical agent, and the chemical agent with which the hydrophilic fiber layer 12 is impregnated is discharged from the hydrophobic fiber layer 11 on the front surface and the rear surface when the cleaning wet wipe 100 is used.
  • embossments 20 that are parts where the sheet is compressed in the Z direction are arranged in the cleaning wet wipe 100 as illustrated in FIGS. 1 and 2 .
  • the embossments 20 are formed into so-called gourd shapes that have thin and long oval shapes with shorter lengths and narrow widths in one direction and have narrowed parts substantially at centers thereof in the long axis direction in plan view, as illustrated in FIG. 2 , for example.
  • the shapes of the embossments 20 are not limited thereto, and various shapes such as polygonal shapes and shapes as combinations of shapes, for example, may be used. However, such gourd shapes are preferable from the viewpoint of improving dirt scraping properties.
  • Such embossments 20 can be formed through heat embossing under conditions of a temperature of 80° C. to 200° C. and an embossing pressure of 0.2 MPa to 1.0 MPa, for example.
  • a convex embossment roll having at least an outer circumferential surface made of carbon steel, stainless steel, a cured resin such as polypropylene or an acrylonitrile butadiene styrene (ABS) resin, or the like.
  • ABS acrylonitrile butadiene styrene
  • embossment working is performed through heat embossing
  • convex embossments 21 that have convex shapes on the upper side in the Z direction (the first surface side of the cleaning wet wipe 100 ) and concave embossments 22 that have convex shapes (that is, that have concave shapes on the upper side in the Z direction) on the lower side (the second surface side of the cleaning wet wipe 100 ) are formed.
  • convex embossments 21 are illustrated by solid lines while the concave embossments 22 are illustrated by dashed lines in each drawing.
  • the convex embossments 21 are formed to have lengths of 5 mm to 10 mm, preferably of 6 mm to 8 mm in the long axis direction. Also, the convex embossments 21 are formed to have lengths of 2 mm to 5 mm, preferably of 3 mm to 4 mm in the short axis direction that perpendicularly intersects the long axis direction. Also, the convex embossments 21 are formed to have lengths (the heights from the intermediate part (which will be described later)) of 0.5 mm to 2 mm, preferably of 0.7 mm to 1.5 mm in the Z direction.
  • the concave embossments 22 are formed upside down into substantially the same shapes as the convex embossments 21 and are formed into convexities toward the lower side in the Z direction, in a sectional view.
  • An intermediate part is formed between the embossments 20 formed in the cleaning wet wipe 100 . Since the intermediate part is a part where the embossments 20 are not formed, the intermediate part is located to be lower than the convex embossments 21 and higher than the concave embossments 22 in the Z direction.
  • first embossment blocks 30 with diamond shapes formed from combinations of the convex embossments 21 and the concave embossments 22 in which an angle formed between the first direction (the X direction in FIG. 2 ) that perpendicularly intersects a first side a and the long axis direction is 30° to 60° form embossment block rows 31 continuously from the first side a to a second side b as illustrated in FIG. 2 , for example.
  • the plurality of embossment block rows 31 are continuously arranged from a third side c to a fourth side d.
  • a first embossment block 30 inside the first embossment block row 31 overlaps, in a second direction (the Y direction in FIG. 2 ) perpendicularly intersecting the first direction, a second embossment block 30 that is adjacent in the second embossment block 31 row.
  • the convex embossments 21 and the concave embossments 22 are arranged such that at least one convex embossment 21 and at least one concave embossment 22 are present on a straight line extended perpendicularly from an arbitrary point on the third side c to the fourth side d.
  • a non-embossment part 40 where the cleaning wet wipe 100 is not compressed in the Z direction and raised fabric is included is provided between adjacent embossment blocks 30 .
  • the non-embossment part 40 can be formed by designing the convex embossment roll for forming the embossments 20 to exclude the shape of the non-embossment part 40 or by slightly compressing it as compared with the part compressed for the embossments 20 to such an extent that the raised fabric remains.
  • the cleaning wet wipe 100 is moved substantially perpendicularly to the X direction or the Y direction.
  • the non-embossment part 40 is formed into one straight line as illustrated in FIG. 2 , in particular, there is a concern that wiping streaks are likely to occur depending on the angle at which the cleaning wet wipe 100 is moved.
  • the embossment blocks 30 be arranged such that the non-embossment part 40 is not on one straight line.
  • the cleaning tool 200 is moved in the first direction or the second direction when wiping cleaning is performed with the cleaning tool 200 having the head 201 .
  • the cleaning wet wipe 100 that has the embossment pattern as described above and has at least one convex embossment 21 present on the straight line extended from the arbitrary point on the third side c to the fourth side d is attached to the cleaning tool 200 , the convex embossments 21 have overlapping margin when the wiping cleaning is performed at least in the second direction (the Y direction in FIG. 2 ). It is thus possible to reduce occurrence of wiping streaks.
  • the convex embossments 21 further projecting than the non-embossment part 40 receives a higher pressure when the wiping cleaning is performed with the cleaning wet wipe 100 by providing the non-embossment part 40 at a proportion of 25% to 50% with respect to the area of the cleaning wet wipe 100 between the embossment blocks 30 without providing the embossments 20 over the entire surfaces of the cleaning wet wipe 100 . Therefore, chemical agent discharge properties are improved, and it is possible to further reduce occurrence of wiping streaks.
  • the cleaning wet wipe 100 has the three-layer structure with the hydrophilic fiber layer 12 sandwiched between the hydrophobic fiber layers 11 , 11 , the chemical agent retained by the hydrophilic fiber layer 12 is selectively discharged to the surface to be cleaned. Additionally, it is possible to further enhance chemical agent holding properties by air held at the parts where the hydrophobic fiber layer 11 and the hydrophilic fiber layer 12 are entangled.
  • the embossment blocks 30 have diamond shapes including embossments 20 with angles of 30° to 60° between the first direction and the long axis direction, the embossment blocks 30 are inevitably arranged with deviation with respect to the first direction of the cleaning wet wipe 100 when the plurality of embossment block rows 31 in which the embossment blocks 30 are arranged continuously from the first side a to the second side b are arranged continuously from the third side c to the fourth side d. Also, a margin occurs in the angle at which the cleaning wet wipe 100 is moved when a user carries out wiping cleaning.
  • embossments 20 have oval shapes and have shapes having narrowed parts substantially at the centers thereof in the long axis direction, it is possible to enhance dirt scraping performance.
  • the cleaning wet wipe 100 is not limited thereto. It is only necessary for the embossment blocks 30 to include at least the convex embossments 21 .
  • embossment blocks 30 with diamond shapes including embossments 20 with angles of 30° to 60° between the first direction and the long axis direction have been described as an example in FIGS. 1 and 2 , the shape of the embossment blocks 30 is not limited thereto.
  • embossment blocks 30 including embossments 20 with angles of 0° or 90° between the first direction and the long axis direction may be used.
  • the convex embossments 21 and the concave embossments 22 may be arranged such that the long axis directions of the convex embossments 21 and the concave embossments 22 in the first embossment block 30 are different from the long axis directions of the convex embossments 21 and the concave embossments 22 in the second embossment block 30 that is adjacent to the first embossment block 30 .
  • the chemical agent with which the cleaning wet wipe 100 is impregnated can be changed in accordance with applications thereof.
  • the cleaning wet wipe 100 has the three-layer structure, the cleaning wet wipe 100 is not limited thereto.
  • first side a and the second side b have been defined as shorter sides of the cleaning wet wipe 100 and the third side c and the fourth side d have been defined as longer sides of the cleaning wet wipe 100 in each drawing, the shorter sides and the longer sides are not limited thereto.
  • both the convex embossments 21 and the concave embossments 22 have substantially the same gourd shapes in plan view in each drawing, the convex embossments 21 and the concave embossments 22 may have different shapes.
  • the convex embossments 21 and the concave embossments 22 in the cleaning wet wipe 100 are preferably arranged to be substantially symmetrical between the first surface and the second surface in any of the above embossment patterns. In this manner, the first surface and the second surface of the cleaning wet wipe 100 have similar cleaning functions, and it is possible to increase the wiping area per sheet.
  • the plurality of embossment block rows 31 in which the plurality of first embossment blocks 30 with diamond shapes that were combinations of the gourd-shaped convex embossments 21 and concave embossments 22 with an angle of 30° between the first direction (the X direction in FIG. 2 ) and the long axis direction were continuously arranged from the first side a to the second side b opposite to the first side a as illustrated in FIG. 2 were continuously arranged from a third side c to a fourth side d.
  • the embossments 20 were arranged such that the first embossment blocks 30 in the first embossment block row 31 overlap, in the first direction, the adjacent second embossment blocks 30 in the second embossment block row 31 and at least one convex embossment 21 was present on a line extended perpendicularly from an arbitrary point on the third side c to the fourth side d, and the non-embossment part 40 was provided between the embossment blocks 30 at a proportion of 25.0% with respect to the area of the base paper sheet.
  • the non-embossment part 40 was provided at a proportion of 37.5% with respect to the area of the base paper sheet.
  • the non-embossment part 40 was provided at a proportion of 50.0% with respect to the area of the base paper sheet.
  • gourd-shaped convex embossments and concave embossments with long axis directions parallel to the first direction were alternately arranged over the entire surface of the base paper sheet, thereby creating a test sheet with no non-embossment part 40 .
  • a plurality of first convex embossments and second convex embossments, which were gourd-shaped embossments, with different long axis directions were provided and arranged such that first convex embossments that were adjacent in the short axis direction overlapped parts of both the first convex embossments in the short axis direction and deviated in the long axis direction and such that the second convex embossments that were adjacent in the short axis direction overlapped parts of both the second convex embossments in the short axis direction and deviated in the long axis direction.
  • Such a plurality of first convex embossments and second convex embossments were caused to be adjacent to each other with the long axis directions forming a substantially right angle and were continuously arranged from the first side a of the base paper sheet to the second side b opposite to the first side a.
  • the concave embossments were arranged in an embossment pattern similar to that of the convex embossments alternately with the convex embossments, thereby creating a test sheet with no non-embossment part 40 as illustrated in FIG. 5 D .
  • a test sheet having only the non-embossment part 40 was created without performing embossing working.
  • test sheets in Examples 1 to 3 and Comparative Examples 1 to 3 were impregnated with 300% by mass of chemical agent containing a water-based detergent, an antiseptic, a disinfectant, and an alcohol with respect to the dry weight, thereby creating wet wipes in Examples 1 to 3 and Comparative Examples 1 to 3. Then, these wet wipes were attached to the cleaning tools having flat heads of 250 mm ⁇ 100 mm, thereby creating the wet sheet wipers in Examples 1 to 3 and Comparative Examples 1 to 3.
  • Example 1 it is possible to ascertain from comparison of Examples 1 to 3 that it was possible to wipe-off the largest amount of dirt in Example 1 in which the non-embossment part 40 was provided at the proportion of 25% and the dirt wiping amount decreased as the non-embossment part 40 increased in proportion. This is considered to be because as the proportion of the non-embossment part 40 increased, the number of convex embossments 21 correspondingly decreased, and the chemical agent discharge properties and the dirt scraping properties decreased as described above.
  • the wiping resistance was high only in Comparative Example 3 in which the embossments 20 were not provided in the entire surface, while there was no significant difference in wiping resistances in Comparative Example 1 and Comparative Example 2 in which the non-embossment part 40 was not provided and in Examples 1 to 3 in which the non-embossment part 40 was provided.
  • the present invention can be used for a cleaning wet wipe capable of reducing occurrence of wiping streaks when wiping cleaning is performed with the cleaning wet wipe attached to a cleaning tool having a head.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Nonwoven Fabrics (AREA)
US18/260,704 2021-01-28 2022-01-12 Cleaning wet wipe Pending US20240057840A1 (en)

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JP2021012346A JP2022115660A (ja) 2021-01-28 2021-01-28 清掃用ウェットシート
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CN116724156A (zh) 2023-09-08

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