JP2015229041A5

JP2015229041A5 -

Info

Publication number: JP2015229041A5
Application number: JP2014117379A
Authority: JP
Filing date: 2014-06-06
Publication date: 2016-04-07
Anticipated expiration: 2034-06-06

Description

清掃用シート１には、掻き取り層５の表面に凹凸を形成してもよい。例えば図１に示すとおり、掻き取り層５の表面に、菱形格子状のヒートエンボス加工を施すことで、菱形格子状の凹部８を形成してもよい。この菱形格子状の凹部８によって取り込まれた領域は、凸部９からなる非エンボス領域となっている。凹部８は、ヒートエンボス加工による熱及び圧力の適用によって、凸部９からなる非エンボス領域よりも圧密化している。このヒートエンボス加工は、掻き取り層５の表面に凹凸を形成することに加えて、掻き取り層５と吸水層４とを接合するためにも用いることができる。
In the cleaning sheet 1, irregularities may be formed on the surface of the scraping layer 5. For example, as shown in FIG. 1, the rhombic lattice-shaped recesses 8 may be formed on the surface of the scraping layer 5 by applying a rhombus lattice-shaped heat embossing process. A region taken in by the rhombic lattice-shaped recesses 8 is a non-embossed region including the protrusions 9 . The concave portion 8 is more consolidated than the non-embossed region formed by the convex portion 9 by application of heat and pressure by heat embossing. This heat embossing can be used to join the scraping layer 5 and the water absorbing layer 4 in addition to forming irregularities on the surface of the scraping layer 5.

凹部８のパターン形状は菱形格子状に限定されず、線状、点状、特定模様の任意の形状が採用され得る。凹部８の総面積は、清掃用シート１の清掃面の面積に対して５％以上、特に１０％以上であることが好ましい。また、５０％以下、特に４０％以下であることが好ましい。具体的には、凹部８の総面積は、清掃用シート１の清掃面の面積に対して５％以上５０％以下であることが好ましく、１０％以上４０％以下であることが更に好ましい（以下この値を凹部８の面積率という）。凹部８の面積率をこの範囲内に設定することで、清掃時の表面強度と清掃性とを首尾よく両立させることができる。
The pattern shape of the concave portion 8 is not limited to the rhombus lattice shape, and any shape of a linear shape, a dot shape, or a specific pattern can be adopted. The total area of the recesses 8 is preferably 5% or more, particularly 10% or more with respect to the area of the cleaning surface of the cleaning sheet 1. Further, it is preferably 50% or less, particularly 40% or less. Specifically, the total area of the recesses 8 is preferably 5% or more and 50% or less, more preferably 10% or more and 40% or less with respect to the area of the cleaning surface of the cleaning sheet 1. This value is referred to as the area ratio of the recess 8 ). By setting the area ratio of the concave portion 8 within this range, it is possible to successfully achieve both surface strength and cleanability during cleaning.

＜２２＞
吸水層の坪量は、好ましくは３０ｇ／ｍ^２以上、更に好ましくは４０ｇ／ｍ^２以上であり、好ましくは１００ｇ／ｍ^２以下、更に好ましくは８０ｇ／ｍ^２以下である前記＜１＞ないし＜２１＞のいずれか１に記載の清掃用シート。
＜２３＞
掻き取り層と吸水層からなる清掃用シートの総坪量は、好ましくは５０ｇ／ｍ^２以上３００ｇ／ｍ^２以下である前記＜１＞ないし＜２２＞のいずれか１に記載の清掃用シート。＜２４＞
面内方向の通気度Ｔ_ＭＤよりも垂直厚み方向の通気度Ｔ_ＶＤの方が小さく、掻き取り層の垂直厚み方向の通気度Ｔ_ＶＤよりも吸水層の垂直厚み方向の通気度Ｔ_ＶＤの方が小さい前記＜１＞ないし＜２３＞のいずれか１に記載の清掃用シート。
＜２５＞
清掃用シートの厚み方向において研磨粒子は掻き取り層の裏面側（吸水層）寄りの位置に相対的に多く存在し、表面側（清掃面側）に相対的に少ないか、又は存在しない前記＜１＞ないし＜２４＞のいずれか１に記載の清掃用シート。
＜２６＞
前記＜１＞ないし＜２５＞のいずれか１に記載の清掃用シートを、使用前の状態では乾式タイプものとなし、使用に際しては、乾式のまま、あるいは湿潤させて使用し、
湿潤させて使用する場合、清掃対象面を水で湿潤させておき、湿潤状態の清掃対象表面を掻き取り層で清掃し、次いで湿潤状態の該清掃対象表面の水分を含む汚れを含んだ汚液を吸水層で拭き取る、清掃方法。
<22>
The basis weight of the water absorption layer is preferably 30 g / m ² or more, more preferably 40 g / m ² or more, preferably 100 g / m ² or less, more preferably 80 g / m ² or less <1> to <21> The cleaning sheet according to any one of 21>.
<23>
The cleaning sheet according to any one of <1> to <22>, wherein the total basis weight of the cleaning sheet composed of the scraping layer and the water absorbing layer is preferably 50 g / m ² or more and 300 g / m ² or less. <24>
Smaller towards the air permeability T _VD in the vertical thickness direction than the air permeability T _MD in the direction of the plane, towards the vertical thickness direction of the air permeability T _VD scraping layer water-absorbing layer than the air permeability T _VD in the vertical thickness direction <1> thru | or <23> in any one of said <1> thru | or <23> which is small.
<25>
In the thickness direction of the cleaning sheet, the abrasive particles are present in a relatively large amount at a position near the back surface side (water absorbing layer) of the scraping layer, and are relatively small or not present on the front surface side (cleaning surface side). The cleaning sheet according to any one of 1> to <24>.
<26>
The cleaning sheet according to any one of the above <1> to <25> is used as a dry type in a state before use, and is used in a dry state or wetted before use.
When wetted, the surface to be cleaned is moistened with water, the wet surface to be cleaned is cleaned with a scraping layer, and then the soiled water-containing soil containing dirt is contained. Wipe with a water-absorbing layer, cleaning method.

Claims

A cleaning sheet in which a scraping layer and a water absorption layer containing pulp fibers are laminated,
The scraping layer includes a fine fiber made of a thick fiber and a heat-fusible fiber having a fineness smaller than that of the thick fiber ,
The scraping layer is made of an airlaid nonwoven fabric in which fiber intersections of large-diameter fibers are joined, and a plurality of the large-diameter fibers are erected, and the tip portion thereof is present on the surface of the scraping layer,
The fine fiber has a fineness of 10 dtex or more and 150 dtex or less, and is contained in the scraping layer by 10% by mass or more,
The scraping layer has a space between the large diameter fibers, and abrasive particles are present in the space so as to be removable.
Wherein among the large diameter fiber, large diameter fiber tip surface of the scraping layer that not exist, the tip region including a tip portion, wherein the abrasive particles are not substantially adhered, the cleaning sheet .

The cleaning sheet according to claim 1, wherein the scraping layer contains the large-diameter fiber and a small-diameter fiber having a fineness smaller than that of the large-diameter fiber.

The cleaning sheet according to claim 1, wherein the large-diameter fiber contained in the scraping layer is a heat-fusible fiber.

The cleaning sheet according to any one of claims 1 to 3, wherein irregularities are formed on a surface of the scraping layer.

The cleaning sheet according to claim 1, wherein perforations are formed.

The thin fiber according to any one of claims 1 to 5, wherein the thin fiber is a short fiber, and the fiber length is 2 mm or more. The cleaning sheet according to any one of the above.

Among the large-diameter fibers, the large-diameter fiber having a tip portion on the surface of the scraping layer is the large-diameter fiber. The number of the abrasive particles observed when the tip region of the fiber is expanded is the thickness direction of the scraping layer. The amount is 10% or less with respect to the number of abrasive particles observed in the large-diameter fiber in the central portion. The cleaning sheet according to claim 1.

A plurality of cleaning sheets according to any one of claims 1 to 7, wherein a plurality of cleaning sheets are laminated and stored in a packaging material,
The packaging material is provided with an opening for taking out the cleaning sheet, and a Rishi Lumpur possible closure member for closing the opening,
The cleaning sheet packaging body, wherein the cleaning sheet is laminated in the packaging material such that the water absorption layer side faces the opening.

The cleaning sheet package according to claim 8 , wherein the packaging material is a separate packaging body enclosed in a separate packaging material having an opening or a hook provided in a peripheral edge portion.

A cleaning sheet package according to any one of claims 1 to 7 , wherein the cleaning sheet package is housed in a packaging material and individually wrapped.
A cleaning sheet packaging body in which an opening or a hook is provided in a peripheral edge portion of the packaging material and can be suspended by the opening or the hook.

A method for producing a cleaning sheet according to any one of claims 1 to 7 ,
To the scraping layer in the cleaning sheet before the abrasive particles are applied, a slurry containing abrasive particles is applied to form a coating film,
The manufacturing method of the sheet | seat for cleaning which has a process which presses a member with a smooth surface against the said scraping layer, and removes a slurry from the surface area of this scraping layer in the wet state of the said coating film.

The manufacturing method of the sheet | seat for cleaning of Claim 11 which further has the process of wiping off the surface area of a scraping layer with the wiping member which consists of fibers, after drying the said coating film.