JP2002017639A - Sheet for cleaning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet for cleaning wherein the reduction of the adherent force of the tacky surface at the time of cleaning is less, the persistency of the a tackiness is large, and a larger area can be cleaned with the same sheet area by a simple operation without specifically requiring labor, and in addition, the application of damages to a surface to be cleaned is less. SOLUTION: This sheet 1 for cleaning comprises a base sheet, and a fiber layer formed of a large number of raised fibers 35 which erect on the cleaning surface side of the base sheet. In this case, the cleaning surface 31 is formed of the fiber layer, and the cleaning surface 31 has tackiness. Also, spaces between the erected fibers 35 form an open space 32 which can catch objectives to be cleaned. The sheet for cleaning can be used for a rotatable rolling type cleaning utensil 1 comprising a roller handle 2 which is formed into an L-shape, and a cylindrical core 3 which is rotatably fitted on the distal end section 21 of the roller handle 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning sheet which is pressed against a carpet, a tatami mat, a wall, or the like on a floor, and adheres dust or hair.

[0002]

2. Description of the Related Art An adhesive cleaning sheet is used for a roll-type cleaning tool or the like for cleaning a carpet or the like by rotating an adhesive tape wound with an adhesive layer on the outside. Have been. Various types of such roll-type cleaning tools are known in JP-A-56-33077. The cleaning sheet used in such a conventional roll-type cleaning tool may damage a surface to be cleaned such as a carpet due to excessive adhesive force depending on the type of the carpet. Further, when the adhesive surface is contaminated with dust, hair, cotton dust, etc., the adhesive force is rapidly reduced, and there is a problem that a new surface must be immediately released.

In order to solve these problems, Japanese Patent Laid-Open No.
Various cleaning sheets have been proposed in, for example, JP-A-234644, but even with the cleaning sheets according to these proposals, the above-mentioned problem has not yet been sufficiently solved, the sustainability has been further improved, and the cleaning surface has been improved. There is a demand for a cleaning sheet that does not cause damage.

[0004] Accordingly, an object of the present invention is to reduce the adhesive strength of the adhesive surface at the time of cleaning, and to maintain the adhesiveness in a large amount. An object of the present invention is to provide a cleaning sheet that can clean an area and that does not damage the surface to be cleaned.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a base sheet and a fiber layer formed by a number of standing fibers standing on the cleaning surface side of the base sheet, and the cleaning surface is formed by the fiber layer. The object is achieved by providing a cleaning sheet in which the cleaning surface has an adhesive property and forms an open space between the upright fibers so as to collect an object to be cleaned. It was done.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described. Cleaning sheet 30 of the present embodiment
Can be used for a rotatable roll-type cleaning tool 1 in which a cleaning sheet 30 is wound around a cylindrical core 3 as shown in FIGS. In the present embodiment, the roll-type cleaning tool 1 includes a roller handle 2 formed in an L-shape, and a cylindrical core 3 rotatably mounted on a distal end portion 21 of the roller handle 2. A cleaning sheet 30 having at least a cleaning surface 31 having an adhesive property is wound around the cylindrical core 3 on its outer peripheral surface such that the cleaning surface 31 is located on the front side as shown in FIGS. Is equipped. In FIGS. 1 and 2, for convenience of illustration, the cleaning sheet is described as having a single layer. However, in practice, the cleaning sheet may be wound a plurality of times, and may be implemented in a state in which a plurality of layers are wound. The number of windings is arbitrary according to the diameter of the cylindrical core 3 and the like.

Accordingly, the cleaning sheet 30 of the present embodiment is
As shown in FIG. 3, a fiber layer 34 formed by a base sheet 33 and a number of upstanding fibers 35 planted so as to stand on one surface 33a of the base sheet 33 on the cleaning surface 31 side.
The cleaning surface 31 is formed by the fiber layer 34. The cleaning surface 31 has adhesiveness, and a large number of open spaces 32 are formed between the upright fibers 35 so as to capture an object to be cleaned such as hair. That is, in the present embodiment, as shown in FIG. 3, the fiber layer 34 is formed by arranging a large number of upright fibers 35 so that a predetermined interval is provided between the upright fibers 35. An open space 32 is formed between the upright fibers 35 arranged at intervals.

[0008] The base sheet 33 in the present embodiment is formed of a sheet-like material such as a nonwoven fabric, and is a vertically long band-like sheet.

In addition, the adhesive property is such that the adhesive 3
6 is applied. Further, in the present embodiment, the adhesive 36 is supported on the upright fibers 35 so that the fiber layer 34 forming the cleaning surface 31 is provided with tackiness. The sheet 33 may be provided with tackiness.
It is preferable that the “carrying” of the adhesive is not only that the surface of the cleaning surface 31 is provided with the adhesive, but also that the adhesive is present inside the fiber layer 34.

In this embodiment, the upright fibers 35 are
Hairs are planted by electrostatic flocking. That is, the standing fiber 35
Are formed by an electrostatic flocking method on a base sheet 33 coated with an adhesive on one surface to form an open space 32.

The upright fibers used in the present embodiment have a fineness of 5 to 100 denier and a fiber length of 0.1.
5 to 10 mm, the fiber density of which is 200 to 15,000 fibers /
cm ² is preferred. The fineness is 10-7
More preferably, the denier is 0 denier, the fiber length is 1 to 7 mm, the fiber density is 500 to 6000 fibers / cm ² , and the fiber shape is acicular. When the fineness is 5 to 100 denier, the rigidity of the fiber is high and the fiber is hardly bent at the time of cleaning, so that the open space is maintained and the collecting property is increased.
In this case, the productivity is high. The fiber length is 0.5 to 1
If it is 0 mm, the open space due to the standing fibers becomes large, and a sufficient amount of dust can be collected. In addition, the depth of the open space becomes appropriate, and the dust penetrates deeply, making effective use of the open space. Is done. The fiber density is 200 to 1
If it is 5000 fibers / cm ² , the spacing between the fibers becomes appropriate, dust easily enters between the fibers, and the retention of dust is also high. Further, when the fiber shape is needle-like, the standing fibers of the fiber layer can enter the inside of the surface to be cleaned having a three-dimensional structure, and the cleaning performance is further improved. The fibers need not necessarily stand upright with respect to the base sheet, but may be inclined with respect to the base sheet as long as they have an open space necessary for holding dust.

The constituent material of the standing fibers is not particularly limited, and natural fibers such as cotton, regenerated fibers such as viscose rayon and cupra, semi-synthetic fibers such as acetate and triacetate, nylon 6, nylon 66, polyacrylonitrile, polyurethane and the like. Any of the above synthetic fibers may be used, but when the erected fiber is made of electrostatic flocking, the electric conductivity of the erected fiber is preferably 10 ⁶ to 10 ¹⁰ Ω and the heat resistance is 12
The temperature is preferably 0 ° C. or higher. The electric conductivity may be controlled by a treatment with a surfactant or the like.

A non-woven fabric is preferred as the base sheet.
And its basis weight is preferably 20 g / m ^TwoAbove, more preferred
Or 25-45 g / m^TwoAnd its thickness is preferred
Is 0.2 to 3 mm, more preferably 0.5 to 2 mm
You. The thickness is 15 gf / 25 cm.^Two(59P
a) Optical displacement meter when a load is applied (Keyence Corporation)
, PA-1830). It also breaks
The breaking strength is preferably 1 N / 30 mm or more, more preferably
Or 5 N / 30 mm or more.

When the basis weight of the base sheet is at least 20 g / m ² , the pressure-sensitive adhesive used for implanting the erected fibers on the base sheet is easily carried on the base sheet, and the thickness thereof is 0.5 to 2 mm. Accordingly, when the cleaning sheet is wound around the cylindrical core a plurality of times as a roll-type cleaning tool, the size thereof is appropriate, and a small gap in a room can be cleaned. Further, when the breaking strength is 1 N / 30 mm or more, the sheet is not easily broken during cleaning. The water repellency of the base sheet is preferably JIS by surface treatment.
L1092 It is preferable that it is a 3rd or 4th grade in the water repellency test (spray test).

As the pressure-sensitive adhesive, a pressure-sensitive adhesive selected from the group consisting of a hot-melt type, a solvent type and an aqueous type is preferably used. Examples of the hot-melt adhesive include a styrene-based hot-melt adhesive and an olefin-based hot-melt adhesive, and examples of the solvent-based adhesive include a styrene-based solvent adhesive, an olefin-based solvent adhesive, and an acrylic. Aqueous solvent pressure-sensitive adhesives and the like, and examples of water-based pressure-sensitive adhesives include acrylic water-based pressure-sensitive adhesives.

The hot-melt pressure-sensitive adhesive preferably comprises a base polymer, a tackifier for a solid at room temperature, a softener component and an antioxidant as constituents.

As the base polymer, styrene-butadiene rubber (SBR), styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), styrene
Ethylene / butylene / styrene block copolymer (SE
BS), styrene-ethylene-propylene-styrene block copolymer (SEPS) and the like. When the total amount of the tackifier and the softener is 100 parts by weight, 1
It is used in the range of 0 to 100 parts by weight.

[0018] As the tackifying component, C ₅ petroleum resins, C ₉ petroleum resins, dicyclopentadiene-based petroleum resins, rosin-based petroleum resins, polyterpene resins, terpene phenol resins, and the like, tackifier component and softening It is used in an amount of 50 to 90 parts by weight based on 100 parts by weight of the total amount of the agent components.

The softener component has a softening point of 10 ° C.
A process oil having an average molecular weight of 200 to 700,
Mineral oil, various plasticizers, polybutene, liquid tackifying resin and the like are preferably exemplified, and are used in a range of 10 to 50 parts by weight based on 100 parts by weight of the total amount of the tackifying component and the softener component.

As the antioxidant, a phenolic antioxidant, an amine antioxidant, a phosphorus antioxidant, a benzimidazole antioxidant and the like are used, and the total amount of the tackifier component and the softener component is used. When 100 parts by weight,
It is used in the range of 0.5 to 3 parts by weight.

In addition to these components, components commonly used in pressure-sensitive adhesives can be appropriately added as long as the desired effects of the present invention are not impaired.

The pressure-sensitive adhesive used in the present invention has a melt viscosity of 10,000 mPa · s at 180 ° C.
It is preferable to be 1000 to 8000 mPa.
s, more preferably 1000 to 6000 mPa
S is most preferred. The melt viscosity is 1000
When the pressure is set to 0 cps or less, when the adhesive is applied in a mist state in a non-contact manner, there is no occurrence of uneven coating or dropping.

Further, the adhesive has an elastic modulus at its 20 ° C. is preferably ^{1 × 10 5 Pa~3 × 10 6} Pa, more preferably at ^{3 × 10 5 Pa~1 × 10 6} Pa is there. By setting the elastic modulus to 1 × 10 ⁵ Pa or more, the cohesive force of the pressure-sensitive adhesive becomes appropriate, and no adhesive remains on the carpet when cleaning the carpet or the like.
By setting the pressure to ⁶ Pa or less, the hardness of the pressure-sensitive adhesive becomes appropriate, and a preferable tacking force described later can be exhibited. Here, the "elastic modulus" can be measured as follows. Using a viscoelasticity measuring device (SDM5600, manufactured by Seiko Instruments Inc.), 7.0 mm width × 2.0 mm thickness × 30 m
The m-length adhesive sample is mounted on a chuck (3.0 mm between chucks) of the apparatus, and tensile vibration is applied at a cycle of 1 Hz, and the temperature is increased at a rate of 1 ° C./min (−10 ° C.
60 ° C.) and the elastic modulus was measured.

The pressure-sensitive adhesive preferably has a loop tack of 100 cN / 25 mm or more, more preferably 30 cN / 25 mm or more.
0 cN / 25 mm or more. By setting it to 100 cN / 25 mm or more, the dust collecting property is further improved.
Here, the loop tack is measured by the following loop tack test method. <Loop Tack Test Method> A pressure-sensitive adhesive is solid-coated with a thickness of 20 μm on glassine paper having a basis weight of 60 g / m ² to obtain a sample. Using this sample, a loop tack test is performed in accordance with JIS Z02371. As described above, the selection of the pressure-sensitive adhesive to be used is made by making the sample solid-coated on the flat base material to minimize the dispersion of the measured values.

In the present invention, it is preferable that the composition of the pressure-sensitive adhesive is adjusted so as to satisfy the above-mentioned physical properties.
In order to obtain the desired effects of the present invention, it is desirable to use a hot-melt pressure-sensitive adhesive that satisfies the above-mentioned physical properties.

The coating amount of the pressure-sensitive adhesive (that is, the basis weight of the pressure-sensitive adhesive) is preferably 5 to 50 g / m ² ,
More preferably, it is 10 to 50 g / m ^2, and in the present invention, a hot melt pressure-sensitive adhesive satisfying the above-mentioned respective physical properties is applied at a coating amount within this range and is supported on the sheet base material. Is preferred. By setting the coating amount to 5 g / m ² or more, the dust collecting property is improved, and by setting the coating amount to 50 g / m ² or less, the adhesive may adhere to a carpet or the like,
No more dropping.

The adhesive used in the ordinary electrostatic flocking method can be used without any particular limitation. Examples of the adhesive include acrylic, vinyl acetate, vinyl chloride, vinyl acetate / acrylic copolymer, NBR latex and SBR latex. Emulsion latex adhesives, solvent adhesives such as urethane and epoxy, and thermosetting resin adhesives such as melamine resin and urea resin may be used. However, when the base sheet is a non-woven fabric, an emulsion / latex adhesive such as acrylic, vinyl acetate, vinyl acetate / acrylic copolymer, or the like is preferable. The cleaning sheet of the present embodiment forms the fiber layer on the base sheet by the electrostatic flocking method with each standing fiber spaced at a predetermined interval, and finally forms an adhesive on the fiber layer. Can be obtained by carrying. In addition, the electrostatic flocking method can be performed using a generally known method without any particular limitation. In addition, the adhesion can be carried out by applying an adhesive to the sheet substrate by a non-contact spray method or an impregnation method. Examples of the spraying method include a slot spraying method, a curtain spraying method, a melt blown method, a spiral spraying method and the like. In particular, when a hot melt adhesive is used, it is preferable to employ a spraying method.

As described above, the cleaning sheet 30 of the present embodiment has the open space 32 formed therein, and the hair 41 and the cotton dust 42 are collected in the open space 32 as shown in FIG. Even if the adhesive on the surface of the sheet, that is, the adhesive at the tip of the upright fiber 35 becomes dirty and loses its adhesive strength, the open space 32
Dust can be collected by the internal adhesive, and a large area can be cleaned without the adhesive force dropping sharply unlike a conventional roll-shaped cleaning tool. And open space 3
Since the dust can be held in the cleaning sheet 2, a large amount of dust can be reliably collected as compared with a conventional cleaning sheet having the same area.
In addition, since the open space 32 is formed, the area of the portion that comes into contact with the surface to be cleaned is smaller than that of the conventional cleaning sheet, and there is less possibility of damaging the surface to be cleaned. Therefore, it is particularly suitable as a cleaning sheet for a roll-type cleaning tool as in the present embodiment.

If the cleaning sheet has adhesiveness inside the sheet, even if only one surface thereof has adhesiveness,
Also, both surfaces may have tackiness. Moreover, although the thing which arrange | positioned the upright fiber 35 at equal intervals was illustrated and demonstrated,
The present invention is not limited thereto, and the upright fibers may be partially distributed.

[0030]

The present invention will be described below in detail with reference to examples. [Example 1] Fineness 30d, fiber length 3mm as standing fiber
Using 30 g / m ² of spunlaced non-woven fabric made of nylon fiber and polyester fiber as the base sheet, an electrostatic flocking sheet having a fiber density of 3000 fibers / cm ^{2 was formed} by a conventional electrostatic flocking process, and further, SEBS hot melt adhesive The agent was applied at 20 g / m ² by a slot spray method to obtain a cleaning sheet. [Example 2] Fineness 17d, fiber length 3mm as standing fibers
Using a spunlace nonwoven fabric made of polyester fiber as a base sheet and a nonwoven fabric of 30 g / m ² as a base sheet, an electrostatic flocking sheet having a fiber density of 3000 fibers / cm ² is formed by a conventional electrostatic flocking process, and an acrylic solvent adhesive Was applied by a spray method at a rate of 20 g / m ² to obtain a cleaning sheet.

Comparative Example A commercially available pressure-sensitive adhesive tape cleaner obtained by applying 18 g / m ² of SIS-based hot melt adhesive to glassine paper by solid coating.

Evaluation method Roll-type cleaning tool shown in FIG. 1 (cylindrical core: 16 cm wide,
A cleaning sheet 16 cm × 14 cm was wrapped around the outer periphery (14 cm), and the following evaluation was performed.

Evaluation of Cleaning Sustainability [Measurement Method] Cut pile tufted carpet (100% nylon fiber, pile length 7 m) as a surface to be cleaned
m, pile density gauge 1/15, stitch 43 / 10c
m (Sumie Textile Co., Ltd. tile carpet US-300
0)). On the carpet 30cm x 30cm, 10 hairs (straight hair 10cm) and 0.05g of acrylic fiber (fiber length 5mm, fineness 3d) as model dust
Spray. The carpet is cleaned 5 times (stroke width 30 cm) with a roll-type cleaning tool equipped with a cleaning sheet,
The collection rate is determined from the number of hairs attached to the cleaning sheet for the sprinkled hairs. The remaining model dust is removed, 10 hairs and 0.05 g of acrylic fiber are sprayed again, and this operation is repeated until the hairs cannot be collected. The collection rate of the cleaning sheet tends to decrease due to contamination of the model dust, and the cleaning sustainability is evaluated from the relationship between the number of tests and the collection rate. [Evaluation method] Sustainability is evaluated by indicating the number of tests showing a collection rate of 70% or more. ○: Sufficient sustainability ×: Insufficient sustainability

Carpet Damage [Measurement Method] When various carpets are cleaned with a roll-shaped cleaning tool equipped with a cleaning sheet, the carpet damage is evaluated from the amount of carpet pile adhering to the cleaning sheet. [Evaluation method] ○: hardly damaged △: slightly damaged ×: considerably damaged

Evaluation of Cleaning Resistance [Measurement Method] Cut pile tufted carpet (100% nylon fiber, pile length 7 m) as a surface to be cleaned
m, pile density gauge 1/15, stitch 43 / 10c
m (Sumie Textile Co., Ltd. tile carpet US-300
0)). A 30 cm × 30 cm carpet placed on a 10 kg balance is cleaned 10 times with a roll-type cleaning tool equipped with a cleaning sheet (stroke width 30 cm). The cleaning resistance at this time is evaluated from the maximum load value of the balance and ease of use. [Evaluation method] ○: Low resistance and easy to use ×: High resistance and difficult to use

[0036]

[Table 1]

[0037]

According to the cleaning sheet of the present invention, the adhesive strength of the adhesive surface at the time of cleaning is small and the persistence of the adhesiveness is large.
In particular, a large area can be cleaned with the same sheet area by a simple operation without any trouble, and the surface to be cleaned is hardly damaged, the resistance at the time of cleaning is low, and the device is easy to use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a roll-type cleaning tool using a cleaning sheet of the present invention, in which the number of standing fibers is less than the actual number and partially omitted.

FIG. 2 is a sectional view taken along line XX of FIG. 1;

FIG. 3 is an enlarged view of a Y part of the cleaning sheet shown in FIG. 1;

FIG. 4 is a partially enlarged view (corresponding to FIG. 3) showing a usage pattern of the cleaning sheet of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roll-type cleaning tool 2 Roller handle 3 Cylindrical core 30 Cleaning sheet 31 Cleaning surface 32 Open space 33 Base sheet 34 Fiber layer 35 Upright fiber

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Koji Machii, Inventor 2606, Akabane, Kaigamachi, Haga-gun, Tochigi Prefecture F-term in the Kao Corporation Research Laboratory (reference) 3B074 AA07 AA08 AB01 AC00 4L047 AA21 CA19 CC16

Claims (4)

[Claims] 1. A cleaning sheet comprising: a base sheet; and a fiber layer formed by a large number of standing fibers standing on a cleaning surface side of the base sheet, wherein the cleaning surface is formed by the fiber layer. A cleaning sheet having an adhesive property and forming an open space between the standing fibers so as to collect an object to be cleaned. 2. The cleaning sheet according to claim 1, wherein the upright fibers are planted by electrostatic flocking. 3. The erect fiber has a fineness of 5-10.
0 denier, the fiber length is 0.5 to 10 mm,
The cleaning sheet according to claim 1, wherein the fiber density is 200 to 15,000 fibers / cm ² . 4. The cleaning sheet according to claim 1, wherein the cleaning sheet is wound around a cylindrical core and used as a cleaning sheet in a rotatable roll-type cleaning tool.