JP3948820B2 - Cleaning sheet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning sheet that allows a user to easily know the replacement time and has improved cleaning efficiency.
[0002]
[Prior art and problems to be solved by the invention]
Disposable cleaning sheets made of non-woven fabric have been widely used in the past, and recently, cleaning sheets used for floor cleaning or attached to a handy type cleaning tool are also widely used.
[0003]
However, the conventional cleaning sheet may continue to be used even when the replacement time is not known and the cleaning ability of the sheet is reduced to such an extent that dirt cannot be sufficiently adsorbed. There is a problem of lowering.
[0004]
An object of the present invention is to provide a cleaning sheet that can easily know the replacement time and can perform cleaning with high cleaning efficiency.
[0005]
[Means for Solving the Problems]
The inventors of the present invention have found that a cleaning sheet in which a cleaning part is provided with an easily contaminated part that easily adsorbs dirt and a hardly contaminated part that hardly adsorbs can achieve the above object.
[0006]
The present invention is a disposable cleaning sheet made of non-woven fabric, comprising an easily contaminated part that easily adsorbs dirt during use and a hardly contaminated part that hardly adsorbs dirt, and the easily contaminated part becomes contaminated with use. Thus, a cleaning sheet is provided in which the hardly contaminated portion appears visually and the user is notified of the replacement time.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings.
[0008]
Here, FIG. 1 is a plan view showing a handy type cleaning sheet as a first embodiment of the cleaning sheet of the present invention.
[0009]
FIG. 2 is a perspective view showing a use mode in which the cleaning sheet shown in FIG. 1 is attached to a handy type cleaning tool.
[0010]
As shown in FIG. 1, the cleaning sheet 1 of this embodiment is a disposable cleaning sheet made of a nonwoven fabric.
[0011]
As shown in FIG. 1, the cleaning sheet 1 has an insertion space S (see FIG. 2) in which two nonwoven fabrics 1 a having peripheral edges cut into a continuous mountain shape are bonded together by heat sealing. It is formed in a flat bag shape. That is, the cleaning sheet 1 of the present embodiment is provided with a seal portion 11 having a width of 5 mm having two corners at the tip, and the periphery of the cleaning sheet 1 outside the seal portion 11. A continuous mountain-shaped non-seal part 11a along the part is provided. Further, in the cleaning sheet 1 of the present embodiment, the entire surface excluding the seal portion 11 is the cleaning portion 10.
[0012]
As the nonwoven fabric 1a constituting the cleaning sheet 1, a nonwoven fabric composed of a fiber material and a structure excellent in dust absorption and wear resistance is particularly preferably used. Examples of preferable nonwoven fabrics having such properties include spunlace nonwoven fabrics, spunbond nonwoven fabrics, suction nonwoven fabrics, heat bond nonwoven fabrics, and melt blown nonwoven fabrics.
[0013]
The fiber composition forming the nonwoven fabric can be appropriately selected depending on the form of bonding, but as described below, when forming a cleaning sheet by bonding the nonwoven fabric by heat sealing, for example, A nonwoven fabric made of polyethylene terephthalate (PET) fiber is used on the cleaning surface side, and a nonwoven fabric made of PET / polyethylene (PE) (core / sheath) composite fiber is used on the bonding surface side. It is preferable to use a non-woven fabric made by water needling through a PP net formed of PP) fibers. In this case, in particular, the PET / PE (core / sheath) composite fiber constituting the nonwoven fabric used on the bonding surface side preferably contains 10 to 90 wt% of PE.
[0014]
Further, an oil agent is applied to the non-woven fabric 1a in order to easily adsorb dirt (dust, dust, etc.).
[0015]
Examples of the oil agent include liquid paraffin, petrolatum, mineral oil, synthetic oil, animal oil, vegetable oil, surfactants such as anion, cation or nonion, and mixtures thereof.
[0016]
The seal portion 11 has a corner portion at the distal end portion, but may have a U shape, a V shape, or the like in plan view. The seal portion can be formed by employing various sealing methods such as an ultrasonic sealing method, a sealing method using a hot melt adhesive, and a heat sealing method.
[0017]
The width of the non-seal portion 11a provided outside the seal portion 11 is preferably 1 mm to 50 mm, more preferably 5 mm to 30 mm from the peripheral edge of the nonwoven fabric 1a. If the width is narrower than 1 mm, it becomes easy to damage the object to be cleaned by the seal part 11, and the dust absorbing effect at the non-seal part 11 a is almost lost, and if it exceeds 50 mm, the waist of the non-seal part 11 a is lost. It becomes difficult to clean.
[0018]
Thus, as shown in FIG. 1, the cleaning sheet 1 of the present embodiment includes an easily contaminated portion 12 that easily adsorbs dirt during use and a hardly contaminated portion 13 that hardly adsorbs dirt during use. Along with this, the easily contaminated part 12 is contaminated, so that the difficultly contaminated part 13 is visually raised to notify the user of the replacement time.
[0019]
More specifically, as shown in FIG. 1, the hardly contaminated portion 13 is provided as a mark such as an elephant or a cover on the cleaning portion 4. Incidentally, the hardly contaminated portion 13 is only a portion of the line forming these marks, and the inside surrounded by the line is the easily contaminated portion 12. The hardly contaminated part 13 is provided over the whole site | part used for cleaning.
[0020]
The hardly contaminated portion 13 is a portion that is difficult to adsorb dirt, and is formed as follows.
[0021]
(1) A nonwoven fabric for forming a cleaning sheet by embossing is formed by a concave embossing process so that a concave portion having a depth of 0.1 mm or more is formed at a predetermined temperature, pressure, clearance and processing speed.
[0022]
(2) By forming heat-embossed or film-forming paint or polymer film on the non-woven fabric that forms the cleaning sheet by film formation, a part of the non-woven fabric (predetermined shape) is formed into a film to form the above-mentioned hardly contaminated portion. To do.
[0023]
{Circle around (3)} When producing a nonwoven fabric for forming a forming cleaning sheet by not applying an oil agent, a portion where an oil agent is not applied in a predetermined shape is provided to form the hardly contaminated portion.
[0024]
In other words, the hardly contaminated portion 13 is an embossed portion formed by embossing a nonwoven fabric. In such a case, a recess as a hardly contaminated portion is formed, and the hardly contaminated portion 13 is the above easily contaminated portion 12. The easily contaminated portion 12 is made bulkier than the hardly contaminated portion 13.
[0025]
Moreover, you may form the said hardly contaminated part 13 by forming into a film and making it into a film-forming part.
[0026]
Moreover, you may form the said hardly contaminated part 13 by forming the non-oil agent application part which does not apply | coat an oil agent in part. That is, the nonwoven fabric is coated with an oil agent that imparts dirt adsorbability to the nonwoven fabric, and the hardly contaminated portion is a non-oil agent coated portion formed by not applying the oil agent. In this case, the hardly contaminated portion 13 and the easily contaminated portion 12 have substantially the same height (bulky height).
[0027]
The area of the hardly contaminated portion 13 is arbitrary as long as it does not hinder the cleaning ability of the cleaning portion, but is preferably 0.1 to 30% in the entire area used for cleaning.
[0028]
The difficult-to-contamination part 13 and the easy-to-contamination part 12 are recognized at a glance at a predetermined shape of the hardly-contaminated part after performing a cleaning operation until the cleaning part 10 hardly collects dirt (dust / dust). It is only necessary to provide a difference in dirt adsorbability to the extent possible. This difference can be expressed by a color difference, and the color difference ΔE ^* ab (JIS Z8729) between the hardly contaminated portion 13 and the easily contaminated portion 12 is preferably 1.5 or more, more preferably 3 or more, and most preferably 6 or more. It is preferable that there is a difference in adsorbability. As a result of this color difference, the difficult-to-contaminated part appears to be visually raised.
[0029]
The cleaning sheet 1 of the present invention is used by being attached to a hand and used by attaching it to a handy type cleaning tool as described below, in the same manner as a normal handy type cleaning sheet.
[0030]
Specifically, as shown in FIG. 2, the cleaning sheet 1 is a flat bag-shaped sheet having an insertion space S. The cleaning sheet includes a head portion 102 made of a cleaning flexible material and the head. It is used by being attached to the head portion 102 of the cleaning tool 101 including the handle 103 provided with a portion at the tip portion via the insertion space S.
[0031]
The head part 102 constitutes a cleaning part for cleaning the part to be cleaned, and the cleaning sheet 1 is attached to the cleaning part.
[0032]
The cleaning device 101 will be described. The head portion 102 is composed of a porous flexible material (C hardness = 20 to 35) made of a soft ester urethane foam having a surface subjected to melt processing. The head portion 102 is provided such that the shape when viewed in plan has two corners at the tip and becomes a wide hexagonal shape as it advances backward (not shown). Further, the head portion 102 is provided such that the tip portion and the thickness thereof become thinner as it advances in the width direction, and the cross-sectional shape thereof is a trapezoidal shape (not shown). And the angle of the corner | angular part which a lower surface part and the surrounding surface part provided in connection with this make a right angle or an acute angle from it.
[0033]
The handle 103 is composed of a handle main body 130 having a grip portion and an attachment member (not shown) attached to the tip portion thereof. The handle body 130 is provided in a curved shape so that the grip portion is positioned higher than the head portion 102 when the mounting member is assembled and the head portion 102 is attached to the mounting member. Further, the handle main body 130 is provided in a hollow structure, and is provided so that the center of gravity of the cleaning tool 101 is located in the head portion 2.
[0034]
Further, clippers (not shown) constituting a fixing portion for mounting and fixing the cleaning sheet to the head portion 102 are fitted to the upper and lower surface portions of the mounting member, respectively. The clipper is provided with a plurality of flexible pieces that form a slit called chrysanthemum, and it can be easily and reliably fixed by simply pressing the vicinity 4a of the opening of the cleaning sheet into the slit. It can be done.
[0035]
And the said cleaning tool 101 is mounted | worn so that the said sheet | seat for cleaning may be covered on the head part 102, Then, the opening part vicinity 4a of the sheet | seat 1 for cleaning is pushed into the said clipper, and the said sheet | seat 1 for cleaning is head part 102 Used by firmly fixing to.
[0036]
And a table, a desk, etc. with a comparatively large area wipe off dust etc. mainly using the inside of the seal part 11 of the cleaning sheet 1. Further, narrow gaps such as between keys on the keyboard are cleaned by inserting non-sealing portions 11a to adsorb dust and the like.
[0037]
And since the cleaning sheet 1 of this embodiment is configured as described above, the easily contaminated portion 12 becomes dirty with use, but the hardly contaminated portion 13 does not get dirty. Various kinds of marks come out. The user can easily determine that the replacement is necessary when the contrast between the two is clear. Preferably, the hardly contaminating part 13 is provided so as to be located over the entire cleaning part of the head part 102 of the cleaning tool 101. “Overall” does not mean that all of the cleaning sheets are resistant to contamination, but the cleaning sheet to be mounted has the contamination resistant part at appropriate intervals, so that the entire cleaning part of the head part is appropriately spaced. This means that the hardly contaminated part is located, and the degree of dirt and the area of dirt can be visually recognized. This is particularly effective in the case of a cleaning sheet attached to a cleaning tool.
[0038]
For this reason, the cleaning sheet 1 of the present embodiment can always be cleaned with good cleaning efficiency.
[0039]
The cleaning sheet 1 according to the present embodiment is made of a non-woven fabric according to a conventional method, and further, a mark is made as described above to create a hardly contaminated portion 13, and finally heat-sealed at the seal portion 11 to prepare two sheets It can manufacture by joining the sheet | seat of this.
[0040]
The cleaning sheet of the present invention is not limited to the above-described form, and various changes can be made without departing from the spirit of the present invention.
[0041]
For example, in the above-described embodiment, the cleaning sheet used by being mounted on the handy-type cleaning tool 101 has been described. However, various other forms such as a cleaning sheet mounted on the floor cleaning tool are used. be able to.
[0042]
In addition, the cleaning sheet 1 may have various forms such as a sheet shape instead of a bag shape as described above.
[0043]
Furthermore, the shape and the like of the hardly contaminated portion are arbitrary as long as the desired effect of the present invention is exhibited.
[0044]
【The invention's effect】
The cleaning sheet of the present invention can easily know the replacement time, and can perform cleaning with high cleaning efficiency.
[Brief description of the drawings]
FIG. 1 is a plan view showing one embodiment of a cleaning sheet of the present invention.
FIG. 2 is a perspective view showing a usage pattern of the cleaning sheet shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sheet for cleaning 1a Nonwoven fabric 11 Seal part 12 Contamination part 13 Contamination part

Claims (5)

In a disposable cleaning sheet made of nonwoven fabric,
Equipped with an easily contaminated part that easily adsorbs dirt during use and a difficultly contaminated part that hardly adsorbs dirt.
A cleaning sheet characterized in that when the easily contaminated part is contaminated with use, the hardly contaminated part appears visually, and the user is notified of the replacement time. The cleaning sheet according to claim 1, wherein the hardly contaminated portion is a recess formed by embossing the nonwoven fabric, or formed as a film. The said nonwoven fabric is apply | coated with the oil agent which provides stain | pollution | contamination adsorptivity to this nonwoven fabric, The said non-contaminated part is a non-oil agent application part formed by not apply | coating this oil agent. The cleaning sheet described. The cleaning sheet according to claim 1, wherein the cleaning sheet is used by being attached to a cleaning tool. The cleaning sheet according to claim 4, wherein the hardly contaminated portion is provided so as to be located over the entire cleaning portion of the cleaning tool.

Images