JP2011122277A5 - - Google Patents

Description

Kitchen paper and kitchen paper products

  The present invention relates to a kitchen paper and a kitchen paper product used for cleaning and for touching food.

Kitchen paper is used for cleaning the kitchen, cleaning utensils, etc., food packaging, boiled drop lids, drip absorbents such as fresh fish, water drainers, oil sachets, and fried foods. Although it is used for various purposes such as direct contact, liquid absorption, hygienic safety, and hygienic design are essential.
In addition, in the use of excess oil in deep-fried food, which is one of the above-mentioned applications, oil and water can be quickly used so that the fried food does not get damaged by steam or oil from the deep-fried food. Is required to absorb or divide the oil and prevent the oil or the like once absorbed from returning to the deep-fried food.

Conventionally, as a configuration of kitchen paper, an appropriate number of sheets made of embossed crepe paper are laminated and formed as a liquid absorption mechanism mainly due to a capillary phenomenon due to a gap between sheet fibers in a gap between embosses of each sheet. Known are those configured to take in and hold moisture, oil, and the like, and those formed only from a nonwoven fabric sheet, in which moisture, oil, etc. are taken in and held in the gaps between the nonwoven fabric fibers.
However, both the conventional kitchen paper made of crepe paper and the kitchen paper made of non-woven sheet are clearly suitable and unsuitable for use due to the properties of each sheet. Have.
For example, the laminate of the above crepe paper does not have the thickness of the whole kitchen paper compared to the nonwoven sheet, and the liquid is diffused due to the high orientation of the fibers in a certain direction due to the manufacturing process. Although it has excellent properties, it has a drawback that the liquid absorption rate is slow and the amount of liquid absorption is small due to the high fiber density. Furthermore, because the paper itself is not thick and the cushioning property in the thickness direction is inferior to that of the nonwoven sheet, especially when used for absorbing excess oil in the above-mentioned fried food, the fried food's clothes may be peeled off, The fried food may become sticky due to steam and oil.
In addition, the kitchen paper may be a product in a roll form, and in this case, the user cuts and uses the perforated line appropriately arranged. Regarding the cutting at the perforation line, the crepe paper tends to have a higher paper strength when compared with the nonwoven sheet, and the kitchen paper in which the crepe papers are laminated has a higher perforation strength than that using the nonwoven sheet. There is a tendency. For this reason, compared with the thing of the nonwoven fabric sheet, it was difficult for consumers to cut at the time of use. Although it is possible to simply reduce the paper strength of the crepe paper for improving the cutting performance at the perforation line, it becomes a brittle kitchen paper with no strength, and it tends to cause problems in various other applications. .

  On the other hand, crepe paper has fine wrinkles (crepes) on its surface. This cocoon is necessary because it functions importantly in terms of liquid absorption and wiping properties when used as kitchen paper, but it has a hygienic impression due to this cocoon compared to the non-woven sheet. There is a property that it is difficult to increase whiteness, which acts greatly, and it is difficult to obtain smoothness of the surface.

On the other hand, kitchen paper consisting only of nonwoven fabric sheets retains the liquid once absorbed, although the liquid absorption rate is very fast due to the coarse fiber density and the large number of voids between the fibers due to the manufacturing method of the nonwoven fabric sheet. The property is extremely inferior to that of kitchen paper laminated with crepe paper, and due to this property, the liquid diffusibility is also inferior to that of crepe paper in which fibers are strongly oriented in a certain direction.
In addition, kitchen paper consisting only of non-woven sheets has a coarse fiber density and a large number of gaps between the fibers, so that dry dust and dust can easily be taken into the gaps in a dry state. Although it is excellent in comparison, it is not suitable for cleaning use such as spilled cup water or sewage absorption, wiping use, etc., because the above-mentioned moisture retention is poor and the back of the liquid and the return of the liquid are not suitable. Also, in water wiping applications, it was difficult to maintain a suitable wet state as compared with crepe paper in which the fibers are dense and oriented strongly in a certain direction.
Furthermore, the kitchen paper made of only the nonwoven fabric sheet cannot be made thin because the fiber dispersion in the thickness direction is inevitably larger than that of the crepe paper due to the manufacturing method. Furthermore, kitchen paper consisting only of non-woven sheets can be good in terms of whiteness because the non-woven sheets are thick and have high cushioning properties, but embossing (embossing) does not enter firmly. It is difficult to enhance the design to give a hygienic impression by applying the design.
In addition, since the fiber density is coarse as described above, the impression of surface smoothness is inferior to that of crepe paper.
In addition, kitchen paper with only a non-woven sheet has the advantage of being easy to cut by the perforation line, but it is necessary to take a long tie part at the perforation line to prevent unintentional cutting. However, there is a drawback that the uncut portion of the perforation is fuzzy and looks bad.

Here, the present applicant has developed a kitchen paper in which a non-embossed nonwoven sheet and an embossed crepe paper are laminated (Patent Document 2 below).
However, this kitchen paper has functions of a non-woven sheet and crepe paper on each side, and is excellent, but there are many insufficient points because there is no more organic function improvement in terms of each effect, The nonwoven fabric sheet may tear when the sheet is wound with a winder after lamination at the time of manufacture, which is difficult in terms of workability.

JP2008-208501 JP2008-137241 JP 2005-288774 A Real S49-124867 JP2007-44539 JP2007-21168 JP 2006-95263 A

  Therefore, the present invention makes full use of the advantages of both the nonwoven sheet and the crepe paper, sufficiently compensates for these disadvantages, and also improves the production problems, so that the production stability, the cutting property during use, and the liquid absorption speed are improved. It is to provide kitchen paper that is excellent in liquid retention and appearance.

The present invention and effects obtained by solving the above problems are as follows.
<Invention of Claim 1>
A kitchen paper in which two sheets are laminated,
A crepe paper containing 90% or more of hydrophilic fibers and a nonwoven sheet made of airlaid containing 40% or more of hydrophilic fibers in a nested form via an adhesive applied to the top of the macro embossing applied to them. Laminated and integrated
The embossed area ratio of the macro emboss is 5.0 to 40% with respect to the area of one side of the kitchen paper, and at least the macro emboss applied to the crepe paper has an embossed top area of the unit macro emboss of 1 Kitchen paper characterized by a thickness of .75 to 9.0 mm ² and an emboss depth of 0.9 to 1.5 mm.

<Invention of Claim 2>
On the crepe paper, together with the macro embossing, the micro embossing with a unit embossing area of 0.04 to 1.0 mm ² and an embossing depth of 0.1 to 0.8 mm is 5.0 to 1.0 with respect to the area of one side of the kitchen paper. The kitchen paper according to claim 1, wherein 40% is provided, and the nonwoven fabric sheet is not provided with microembossing.

<Invention of Claim 3>
The kitchen paper has a crepe height difference of 60 to 70 μm on the surface of the crepe paper, a distance between crepe vertices of 35 to 45 μm, and a whiteness measured from the crepe paper side of 8 sheets is 77 to 98%. The kitchen paper of Claim 1 or 2.

<Invention of Claim 4>
The kitchen paper according to any one of claims 1 to 3, wherein the hydrophilic fibers constituting the nonwoven fabric sheet are pulp fibers having a fiber length of 1.0 to 12.0 mm.

<Invention of Claim 5>
The kitchen paper according to any one of claims 1 to 4, wherein the crepe paper has a non-embossed portion thickness of 140 to 250 µm and a non-embossed portion of the non-woven sheet has a thickness of 500 to 1000 µm.

<Invention of Claim 6>
The kitchen paper has a perforation line for cutting, the cut tie ratio (cut part: tie part) of the perforation line is 5: 1 to 8: 1, and the tie part is 0.75 to 1.25 mm. The kitchen paper according to any one of claims 1 to 5, wherein the perforation strength is 200 to 500 cN.

<Invention of Claim 7>
On the filter paper placed on a horizontal base, the nonwoven fabric sheet is further overlapped with the crepe paper on the upper side, and 1000 μL of salad oil is dropped from the nonwoven fabric sheet side, and after 4 seconds, the filter paper is passed. The kitchen paper according to any one of claims 1 to 6, wherein the amount of oil see-through defined by the weight of the salad oil transferred to is 0.25 g or less.

<Invention of Claim 8>
On the filter paper placed on a horizontal table, the nonwoven fabric sheet is further overlapped so that the crepe paper is on the top and the crepe paper is on the bottom, and after 4 seconds have elapsed after dropping 1000 μL of salad oil from the nonwoven fabric sheet side, Another filter paper is piled on the nonwoven fabric sheet side, and the bottom surface is smoothed from above, a bottom surface area of 56 cm ² , a weight of 70 g is placed, and it is defined by the weight of salad oil transferred to the other filter paper after 1 minute has passed. The kitchen paper according to any one of claims 1 to 7, wherein the return amount of oil is 0.7 g or less.

<Invention of Claim 9>
The kitchen paper according to any one of claims 1 to 8, wherein the kitchen paper is formed into a strip shape, and the side surface of the crepe paper is wound as a winding outer surface and the nonwoven fabric sheet side is wound as a winding inner surface. .

(Function and effect)
The kitchen paper of the present invention is used to absorb excess oil in deep-fried foods.If the deep-fried food is placed on the nonwoven fabric sheet surface, the nonwoven fabric sheet is bulky and has a large inter-fiber gap. It can be easily taken into the fiber and is excellent in terms of oil absorption speed. In particular, the nonwoven fabric sheet produced by the airlaid method (hereinafter sometimes referred to as an airlaid nonwoven fabric sheet) has a number of leading ends of its constituent fibers present on the surface and in the vicinity thereof due to its production method, and its configuration. Since the fibers are dispersed in a three-dimensional random state and there are many interfiber gaps extending in the thickness direction of the sheet, a good absorption rate can be obtained even for oils with higher viscosity than water. Oil is quickly taken up.

  Furthermore, when using it as an oil removing application for excess oil in deep-fried food, if the deep-fried food is placed on a non-woven sheet and the oil is removed, the non-woven sheet by the airlaid method is thicker than the crepe paper and the fiber. Since the density is low, the cushioning and breathability are excellent, and when the fried food is placed, the fried food can be received without damaging the clothes of the fried food.

A part of the liquid absorbed or aerated steam in the nonwoven fabric sheet is held by the crepe paper laminated with the nonwoven fabric sheet, so that oil and steam (water droplets) do not adhere to the fried food again and become sticky.
In particular, in the kitchen paper of the present invention, relatively large macro embossing is given to the nonwoven fabric sheet by the airlaid method. Even if fried food is placed because the nonwoven fabric sheet by the airlaid method has high cushioning properties, the embossing is not easily crushed. And, due to the presence of unevenness on the surface due to this relatively large macro embossing, the contact area with the deep-fried food itself becomes low, the contact range with the oil from the deep-fried food becomes wide, and there are many voids between the fibers. The speed of the liquid absorption speed is further improved, and oil can be absorbed instantly. In addition, the vapor emitted from the deep-fried food is further improved in divergence due to the number of the embossed recesses and the inter-fiber gaps.

  On the other hand, if the deep-fried food is used to absorb excess oil in the deep-fried food, the deep-fried food is diffused in the surface direction due to the high liquid diffusibility of the crepe paper, and then penetrated. Then move to the nonwoven sheet side. Thereby, compared with the case where a deep-fried thing is mounted on the nonwoven fabric sheet surface, it exists in the tendency for the liquid absorption amount of the oil component with a low viscosity which flows out out of a predetermined part for a short time, or the liquid of a water mixture to increase. Therefore, in the kitchen paper of the present invention, for example, the nature of the fried food (food ingredients) and the cooking method, such as using a non-woven sheet surface for a fried food that easily peels off clothes such as fries, and a crepe paper surface for a fried food without clothes such as fried food It is also possible to use them properly according to the situation. Of course, it is needless to say that the surface of the crepe paper may be used with an emphasis on the amount of liquid absorption in consideration of the amount of effluent from the foodstuffs for fried foods whose clothes are easily peeled off.

Furthermore, in this invention, when it was the nonwoven fabric sheet which contains especially hydrophilic fiber 40% or more, it discovered that an effect increased in each use of kitchen paper in various points.
The conventional kitchen paper with only non-woven fabric sheets has insufficient moisture retention compared to oil on the non-woven fabric sheet surface, and was not sufficient for cleaning applications such as moisture absorption retention and wiping. In the present invention, by including 40% or more of hydrophilic fibers, the affinity with moisture is improved on the nonwoven fabric sheet surface, and the cleaning use and moisture retention on the nonwoven fabric sheet surface are improved.
That is, moisture tends to have a lower viscosity than oil, and it is difficult to retain water even if it permeates into the gap due to the penetration phenomenon caused by the presence of interfiber gaps in the nonwoven fabric sheet. The oil component has the effect of stopping in the gap due to its high viscosity.

  In this invention, the water | moisture content absorbed by the penetration | invasion resulting from the space | gap between fibers of a nonwoven fabric sheet, and the water | moisture content permeated and the water | moisture content of a fiber itself is easy to be hold | maintained in a space | gap. Although the moisture retention due to the hydrophilicity of the fiber is short, it is laminated with the crepe paper in the present invention, so the function of the crepe paper is effective for the gap between the crepe paper and the crepe paper and the nonwoven fabric sheet. Will be retained.

In addition, although the liquid absorption improvement effect of these water absorption, oil absorption, etc. is explained in full detail below, there exists a synergistic effect with the embossing form being a nested form.
In the kitchen paper of this invention, since the macro embossing is provided to the nonwoven fabric sheet surface, the scraping performance of solids such as dust is improved, and this also improves the correspondence in cleaning applications.

  On the other hand, the kitchen paper of the present invention is in a nested format, which is a tip-to-tip format (also called point-to-point format) in which the embossed tops of two laminated sheets are bonded to each other. Compared with the laminated form in which embossing is applied and embossing is not applied to the other sheet, the portion where the sheets are separated is small. Thereby, the water | moisture-content absorptivity by including a hydrophilic fiber in the above-mentioned nonwoven fabric sheet, and the transfer to the space | gap between crepe paper and crepe paper, and a holding | maintenance are made | formed effectively. This is due to the tip-to-tip type in which the tops of the embosses are bonded together and the spaced apart parts of each sheet increase, or in a laminated form in which macro embossing is applied to one sheet and macro embossing is not applied to the other sheet. This is an advantage that cannot be obtained.

  To further explain this point, in the conventional crepe paper kitchen paper provided with macro embossing, the crepe paper itself does not have a cushioning property in the thickness direction, so a firm embossing is given, and the embossing depth of each sheet A gap having a size depending on the paper thickness is formed (see FIG. 5). However, when the air-laid nonwoven sheet and crepe paper of the kitchen paper of the present invention are configured in a nested format, the cushioning property of the air-laid nonwoven sheet causes expansion after embossing of the air-laid nonwoven sheet and the embossed top of the crepe paper By entering into the air laid nonwoven sheet side, a solid gap that should be originally formed by the nested type is not formed, and the air gap nonwoven fabric sheet enters into the gap portion, so that the actual gap becomes small ( (See FIG. 2). This enables a quick liquid transfer from the nonwoven sheet to the crepe paper.

  Furthermore, in the tip-to-tip format, when the fried food is placed or touching the wiping surface while thickening, such as wiping operation, the macro embossing tends to collapse, and the liquid absorbed between the gaps flows out again. Although it is easy, in the present invention, such a nested format is not used. Further, in the case of the tip-to-tip type, since the sheets are separated as described above, the gap formed by embossing is easily crushed. For this reason, it is necessary to make a lamination | stacking adhesion area ratio comparatively high. This is a factor that inhibits the diffusion and absorption of liquid.

  In addition, with regard to water absorption and oil absorption, by using the above-mentioned macro embossed nested format and micro embossing on the crepe paper, the area of the crepe paper facing the nonwoven fabric sheet, especially the area facing the gap, becomes wider. Is preferred.

On the other hand, the kitchen paper of the present invention is a non-woven fabric provided with macro embossing on both the nonwoven fabric sheet and the crepe paper by the airlaid method (hereinafter, the nonwoven fabric sheet and the crepe paper may be collectively referred to as each sheet). The manufacturing problem of breakage when winding the winder of the sheet is improved. This is because the air-laid nonwoven sheet is compressed when embossing is applied, and the air-laid nonwoven sheet has a slight stretch allowance as it is crushed by the embossing roll. It is effective.
This function becomes more flexible by not applying an adhesive to the top of the macro embossing applied to the nonwoven fabric sheet, and the elongation becomes remarkable.

  Furthermore, in the nested type, the embossed top of one sheet enters the embossed bottom of the other sheet, so the tensile strength in the sheet extending direction tends to be weak. The weakness of the tensile strength is supplemented by the crepe paper, and the airlaid nonwoven fabric sheet has cushioning properties. This also improves the problem at the time of winding the winder.

Furthermore, when micro-embossing is applied to the crepe paper, the crepe paper is also easily stretched, and the problem at the time of winding with a winder is further improved.
Further, the tensile strength in the sheet extending direction can be designed to be not less than a single layer of non-woven sheet and not more than two crepe papers, thereby increasing the design range of the perforation line. Thereby, problems such as fluffing of the tie portion at the time of cutting of the nonwoven fabric kitchen paper and difficulty in cutting of the crepe paper laminated kitchen paper, which have conventionally occurred in kitchen paper, are also improved.

On the other hand, in the kitchen paper of the present invention, both the crepe paper and the airlaid non-woven sheet have macro embossing, and since they are laminated and bonded, there is a feeling of thickness, and it is visually opaque and feels white. It becomes a thing and looks high-class.
Furthermore, the design is further enhanced by applying microembossing to the crepe paper.
Moreover, about this appearance, it improves also in a nonwoven fabric sheet surface by providing a macro emboss to a nonwoven fabric sheet.

  In addition, airlaid nonwoven sheet has cushioning properties compared to crepe paper, and when both are bonded after embossing by a nested format, the nonwoven sheet is slightly shrunk during embossing, and this is stretched after being bonded to crepe paper, Along with this, the crepe and crease of the crepe paper act in the direction in which the crepe extends, and the crepe paper side appears to have a smooth texture, and the whiteness is improved, resulting in extremely excellent aesthetics.

  The clear difference in whiteness is surely manifested in about 8 stacks, and considering the fact that about 50 rolls and pop-up forms, which are general product forms, are stacked, This is an extremely useful effect.

On the other hand, it is more preferable that micro-embossing is applied to the crepe paper because it becomes supple and does not cancel out the suppleness of the nonwoven fabric sheet.
Furthermore, in making the kitchen paper of the present invention into a product form, assuming that the kitchen paper is in the form of a strip, the side surface of the crepe paper is wound as the winding outer surface, and the nonwoven fabric sheet side is wound as the winding inner surface. And the product which exhibits the outstanding aesthetics which becomes the outer surface where the crepe paper surface which is superior to the nonwoven fabric sheet surface in the design by the micro embossing, the smoothness of the surface, etc. is visually recognized. Further, the production difficulty in the winder due to elongation is further improved.

  In addition, such operational effects of the present invention include the crepe paper and the nonwoven fabric sheet laminated and integrated in a nested manner through macro embossing, and of course, the numerical values defined in each column of the invention described in the above claims. It is made in combination with the range and the material, and its definition is also indispensable for achieving the above-described effects of the present invention. Details will be described in the following embodiment.

  In this specification, fluids such as oil and water may be collectively referred to as liquids, and the functions related to absorption / retention such as absorption amount, absorption rate, and retention of these liquids are collectively represented as liquid absorbency. There is.

  As described above, according to the present invention, a kitchen paper excellent in manufacturing stability, cutting property during use, liquid absorption speed, liquid retention, and appearance is provided.

It is a perspective view for demonstrating the kitchen paper X1 of this invention. It is a cross-sectional schematic diagram of the kitchen paper X1 of this invention. It is another cross-sectional schematic diagram of the kitchen paper X1 of this invention. It is a perspective view of the kitchen paper product of this invention. It is sectional drawing of the kitchen paper which laminated | stacked the conventional crepe paper in the nested form.

Next, embodiments of the present invention will be described in detail below with reference to the drawings.
Drawing 1 is a perspective view for explaining kitchen paper X1 of this form. FIG. 2 is a schematic diagram in which the cross section of the kitchen paper X1 is enlarged. FIG. 3 is a schematic diagram in which the cross section of another form of the kitchen paper X1 is enlarged. FIG. 4 is a perspective view of the kitchen paper product of the present invention taking a roll form. FIG. 5 is an enlarged schematic view of a section of kitchen paper in which conventional crepe papers are laminated in a nested format.

<Structure of kitchen paper>
In the kitchen paper X1 of the present invention, the crepe paper 1 containing hydrophilic fibers and the nonwoven fabric sheet 2 by the airlaid method containing hydrophilic fibers are applied to the top portions 10t and 20t of the macro embossed 10 and 20 attached thereto. Is laminated and integrated in a nested manner through the adhesive 30 formed.

And the embossed area ratio of the macro emboss is 5.0 to 40% with respect to the area of one side of the kitchen paper, and at least the macro emboss 10 given to the crepe paper 1 is the emboss of the unit macro emboss 10. The top area is 1.75 to 9.0 mm ² and the emboss depth D is 0.9 to 1.5 mm.

  As shown in FIG. 3, the preferred form is one in which the laminated form is integrated by an adhesive applied only to the top 10 t of the macro emboss 10 of the crepe paper 1 in the nested type, and the macro emboss of the nonwoven fabric sheet 2. The 20 top portions 20t are not provided with the adhesive 30.

  In this preferred form, it is sufficient to apply an adhesive to one sheet in the lamination and integration by bonding the sheets, and the crepe paper 1 is more clogged with fibers and more embossed than the non-woven sheet 2. This is because it is easy to apply the adhesive 30 to the top 10t. Even if only the airlaid nonwoven fabric sheet 2 can be applied with an adhesive to the embossed top 20t, it may not be securely bonded to the crepe paper 1 due to cushioning properties. Furthermore, due to the feature that the fiber density of the nonwoven fabric sheet is coarse, the adhesive penetrates between the fibers and is difficult to stop at the top part. From this point also, the adhesiveness is difficult.

On the other hand, as for the kitchen paper X1 of this invention, it is desirable for the basic weight (weight per unit area) as a whole to exist in the range of 55-110 g / m < ² >. Within this range, it is possible to ensure sufficient sheet flexibility while ensuring storage and transportability comparable to conventional kitchen paper, and to achieve the detailed configuration and effects of the present invention.

  The paper thickness of the kitchen paper X1 is the same as that of the kitchen paper X1 of the present invention, that is, when a laminated structure of the crepe paper 1 and the airlaid nonwoven fabric sheet 2 is adopted. The sum of the depth D and the sum of the base paper thickness of the nonwoven fabric sheet 2 and the emboss depth do not necessarily match. This is because the airlaid nonwoven fabric sheet 2 has a large cushioning property, and strictly speaking, the embossed top portion 10t of the crepe paper 1 may bite into the ground portion of the nonwoven fabric sheet 2 in the lamination process (see FIG. 2). . Therefore, in the kitchen paper X1 of the present invention, the kitchen paper X1 is more than the sum of the sum of the paper thickness of the crepe paper 1 and the emboss depth D and the sum of the paper thickness of the nonwoven fabric sheet 2 and the emboss depth. The overall paper thickness tends to decrease.

  On the other hand, the kitchen paper X1 of the present invention desirably has an elongation of 18.0 to 30.0% in a laminated and integrated state and a dry longitudinal paper strength of 900 to 2200 cN. Within this range, the perforated line can be easily designed. That is, the formation of perforation lines prevents the problem of paper breaks at the perforation lines during winder processing. In addition, when elongation rate exceeds 30.0%, it will also cause the deterioration of surface property and a yield fall. Specifically, these numerical ranges can be achieved by the configuration of each crepe paper and nonwoven fabric sheet.

  Here, the basis weight (weight per unit area) in the present invention and the specification refers to a value measured based on JIS P 8113. Further, the paper strength and the elongation rate are determined by using a test piece that is cut to a width of 25 mm × a length of 150 mm and cured at 105 ° C. for 10 minutes, using a load cell tensile tester (for example, TG-200N TECHNOGRAPH manufactured by Minebea Co., Ltd.). A test piece 1 ply is set with a gripping interval of 100 mm, and the paper strength and elongation when the test piece breaks are measured. This measurement is performed 10 times, and the average value is used as the paper strength and elongation rate in the present invention.

  Moreover, as a measuring method of thickness, it shall measure using the dial thickness gauge (thickness measuring device) "PEACOCK G type" (made by Ozaki Seisakusho) under the conditions of JIS P8111. Specifically, confirm that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to adjust the zero point, and then Raise the plunger, place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed. The thickness is an average value obtained by performing measurement 10 times.

<Emboss>
On the other hand, in the kitchen paper X1 of the present invention, the macro embosses 10 and 20 are given to the crepe paper 1 and the nonwoven fabric sheet 2, respectively, and they are laminated and integrated in a nested manner. Preferably, the crepe paper 1 is provided with microembossing.

The nested form in the kitchen paper X1 of this embodiment is that the positional relationship of the macro embosses 10 and 20 given to the sheets 1 and 2 is such that the embossed top of the other sheet faces the embossed bottom of one sheet. And have a relationship to face.
The top portion is a top surface of a convex portion protruding so as to approach from the facing sheet, and the bottom portion is a bottom surface of a concave portion recessed so as to be separated from the facing sheet.

  In this nested type, a gap is formed between the side wall 10 w of one macro emboss 10 and the side wall 20 w of the other macro emboss 20. Therefore, in this nested type, the distance between both sheets is shorter than the tip-to-tip type, and the liquid absorption speed of the non-woven sheet 2 is exerted when the non-woven sheet side is in contact with the fried food. Thus, the action and effect of the present invention of absorbing the oil quickly and holding the oil on the side of the crepe paper 1 are effectively exhibited.

  In addition, since this nested type void is formed by the side wall of one macro emboss and the side wall of the other macro emboss, it generally tends not to be crushed even if pressure is applied to each sheet surface. In the kitchen paper X1 of the present invention, the crepe paper 1 has a higher tensile strength than the non-woven sheet 2, and the air laid Since the nonwoven fabric sheet 2 has a three-dimensional cushioning property and tends to be stretched in the sheet extending direction, the synergistic effect of the nonwoven fabric sheet 2 can be compared with a nested type kitchen paper that is simply made of two layers of crepe paper. For example, when the surface of the entire kitchen paper is pressed at the time of wiping, the gap is not easily crushed even in a usage mode in which force is applied in the sheet extending direction. Also exert effective functions in the Applications.

  In addition, although the effect in this cleaning use is good when the crepe paper surface is used as compared with the crepe paper surface and the nonwoven fabric sheet surface, in the kitchen paper X1 of the present invention, the nonwoven fabric sheet surface can be obtained only from the conventional nonwoven fabric sheet. As compared with the above, the effect is extremely high as described above. That is, the oil content and the like are effectively held in the gap 4 even during wiping, and when the liquid is absorbed from the nonwoven fabric sheet side, it is quickly moved to the space between the sheets and the oil content is held in the crepe paper 1. Will come to be.

  Here, the specific shape of one unit macro emboss and the emboss pattern drawn by the unit macro emboss are appropriate design matters. As a specific example, as unit macro embossing, it can be a dot shape such as a rhombus, an ellipse, a polygon in addition to a square or a circle, and as an embossed pattern drawn by a plurality of unit macro embossing, a floral pattern, Appropriate patterns such as a leopard pattern and a geometric pattern can be obtained, and thereby excellent design can be achieved.

The area of the unit macro emboss in each sheet 1 and 2 in a plan view is at least 1.75 to 9.0 mm ² , more preferably 2.00 to 7.50 mm ² , particularly preferably 2.0 to at least in the crepe paper. 4.0 mm ² . If the area of the unit macro embossing is too small, sufficient adhesive strength between sheets cannot be obtained. On the other hand, if the area of the unit macro embossing is too large, the volume of the absorption space by the embossing becomes small, so that a sufficient absorption capacity cannot be obtained.

As a preferred embodiment, the area of the unit macro emboss in the nonwoven fabric sheet 2 in a plan view is preferably in the same range as the crepe paper 1. By setting the numerical range of the unit macro embossing 20 in the nonwoven fabric sheet 2 within the above range, the necessary absorption space (void) 40 can be suitably formed, the manufacturing is facilitated, and the collapse of the gap is effectively prevented. Is done. However, the unit macro embossing 20 in the nonwoven fabric sheet 2 can be made smaller than the above numerical value in an aspect in which an adhesive is applied only to the top portion 10t of the macro embossing 10 of the crepe paper 1 for bonding between the sheets. Even in this embodiment, the lower limit is 1.50 mm ² .

  Moreover, the kitchen paper X1 of this invention sets emboss depth D of the unit macro embossing of the macro embossing 10 provided to the crepe paper 1 to 0.9-1.5 mm. The embossing depth D ensures adhesion to the cushioned nonwoven fabric sheet 2 and the desired gap 40 is reliably formed. In addition, the dirt scraping property is sufficient. Furthermore, it becomes the thing of the design property excellent in which the macro embossing 10 entered firmly.

  The embossing depth of the macro embossing 20 in the nonwoven fabric sheet 2 is not limited to the nesting type by giving the macro embossing by the embossing roll similar to the crepe paper 1 due to the thickness and cushioning property of the airlaid nonwoven fabric sheet 2. It tends to be shallower than unit macro embossing in paper. Therefore, the depth is not limited. When embossing is given to the nonwoven fabric sheet 2 under the condition of giving the same embossing depth as embossing to the crepe paper 1, it is about 0.2 to 1.4 mm. The rate of decrease also varies depending on the density, basis weight, etc. of the nonwoven fabric sheet. However, this does not mean that in the kitchen paper X1 of the present invention, the emboss depth of the macro emboss 20 of the nonwoven fabric sheet 2 and the emboss depth D of the macro emboss 10 of the crepe paper 1 must not be the same.

  In addition, in the kitchen paper X1 of this invention, the embossing height of the macro embossing 20 in the nonwoven fabric sheet 2 tends to become lower than the embossing height of the macro embossing 10 of the crepe paper 1, and has such a structure. This is desirable in terms of liquid absorption. This is because the distance between sheets is small. Here, the emboss height refers to the distance from the non-embossed portion of the surface facing one sheet to the emboss top.

  On the other hand, the embossed area ratio of the macro embosses 10 and 20 in each of the sheets 1 and 2 (the total sum of the unit macro embossed areas) is desirably 5 to 40% with respect to the area of one side of the kitchen paper. When the area ratio is less than 5%, the voids are easily crushed and the effect of imparting macro embossing is reduced, and the adhesion between the two sheets is insufficient, and separation between the sheets is likely to occur. Moreover, there is a possibility that the liquid absorption performance of the sheet itself exceeding 40% may be hindered. For example, in the application of absorbing excess oil in deep-fried food, there is a possibility that the installation area of the foodstuff becomes small and the desired absorption performance cannot be obtained. .

  On the other hand, in the kitchen paper X1 of this embodiment, the nonwoven fabric sheet 2 and the crepe paper 1 are bonded via an adhesive 3 applied to the top of the macro emboss. As described above, it is preferable that the adhesive is applied by an adhesive applied only to the top of the macro-embossed crepe paper. The adhesion area ratio between the nonwoven fabric sheet 1 and the crepe paper 2, that is, the ratio of the area of the part adhered with the adhesive to the sheet area (one side) is 3 to 40%, more preferably 3 to 20%. . If it is this range, the influence of the hardening by an adhesive agent is small, and the softness by a macro embossing process can fully be ensured, and the influence of the oil absorption inhibition by an adhesion part is also small.

  A known acrylic resin, PVA (polyvinyl alcohol), CMC (carboxylmethyl cellulose), starch, or the like, which is used for bonding air-laid nonwoven fabric, is suitable as the adhesive used for bonding the sheets.

On the other hand, regarding the micro embossing in the crepe paper 1 preferably applied, it is desirable that the area of the unit micro embossing is 0.04 to 1.0 mm ² and the embossing depth is 0.1 to 0.8 mm. The micro embossing is preferably given in an amount of 5.0 to 40% with respect to the area of one side of the kitchen paper. By providing micro embossing, further improvement in design properties and suppleness of crepe paper are manifested. Furthermore, the area of the part which faces a nonwoven fabric sheet surface becomes large, and the liquid transfer property from a further nonwoven fabric sheet to crepe paper increases.

  Here, in the kitchen paper X1 of the present invention, it is as described in detail above that there is an excellent advantage when the fried food is placed on the nonwoven fabric sheet surface, but on the contrary, the fried food is placed on the crepe paper surface. There is also an excellent effect for the case. To explain this point, first, the macro embossing of the crepe paper surface in the present invention has a deep embossing depth and a relatively wide area of unit embossing in consideration of adhesiveness with the nonwoven fabric sheet as described above. is there. Due to this structure and the high fiber orientation of the crepe paper (the so-called MD direction, CD direction, etc.), when the fried food is placed on the surface of the crepe paper, the liquid flowing out of the fried food, In addition to being diffused quickly along the fiber direction, it flows into deep and wide embossments, coupled with the nested-type lamination, which is a feature of the kitchen paper of the present invention, where the distance between the crepe paper surface and the nonwoven fabric sheet surface is close, and in a wide range and After the liquid moves into the macro embossing which is far from the opening surface of the embossing (the embossing depth is deep), the liquid moves to the nonwoven fabric sheet side. Of course, the non-embossed portion of the crepe paper surface may be transferred to the nonwoven fabric sheet surface. For this reason, for example, when the amount of liquid flowing out from the deep-fried food is large, the amount of water outflow is large among the deep-fried food, and the viscosity of the liquid flowing out such that the liquid contains fine liquid oil is low. In some cases, it may be preferable to use it for absorbing excess oil in deep-fried food on the crepe paper surface.

<Embossing>
On the other hand, embossing for each sheet can be performed by passing each sheet between a pair of embossing rolls. One of the pair of embossing rolls is preferably an elastic roll made of rubber or the like, and the other is preferably a metal roll having an embossing projection. The combination of the elastic roll and the metal roll is preferable because there is no problem of adjustment of the clearance of the roll or problems such as clogging of paper dust or the like in the roll.

  In addition, in the manufacturing method of the nested type lamination | stacking form, it is common to carry out lamination | stacking integration integrally after provision of the above-mentioned macro embossing. Also in the present invention, this general nested-type stacking procedure is desirable in that the function and effect are sufficiently exhibited. For example, this lamination procedure is highly advantageous in terms of paper breakage during winding with a winder, formation of a gap 40 where the distance between the nonwoven fabric sheet 2 and the crepe paper 1 is short, and the like. However, as a procedure of laminating the nonwoven fabric sheet 2 preliminarily provided with the macro embossing 20 and the crepe paper 1 preliminarily imparted with the macro embossing 10 so as to be separately provided in a nested form, usually, a nip process by a nip roll is performed after the lamination. The action and effect of the kitchen paper of the present invention are exhibited.

Here, as described above, the kitchen paper X1 of the present invention has a smooth surface and the appearance of no wrinkles as compared with a conventional product made only of the crepe paper 1.
This is presumably due to the fact that the kitchen paper X1 of the present invention laminates and integrates the cushioned nonwoven sheet 2 and the crepe paper 1 in a nested manner as described above. That is, since the macro-emboss 10 is applied to the cushioned air-laid nonwoven sheet 2 and bonded to the crepe paper 1, the nonwoven fabric sheet fiber group shrunk at the time of embossing is expanded after bonding to the crepe paper 1. As a result, it is assumed that the crepe of the crepe paper 2 and unnecessary wrinkles are stretched.

  On the other hand, in giving macro embossing, it can carry out in the state which a pair of embossing roll heated both or one embossing roll. When the embossing roll is heated, the embossing is given more clearly and clearly.

  The heated embossing roll may be an elastic roll, but is preferably a metal roll. This is because the metal roll has a better thermal conductivity and effectively exhibits the effect of heating, and when the metal roll is heated, it corresponds to the shape of the embossed sheet or sheet. This is because heat is given to the ground, and the embossing given becomes clearer and clearer. In addition, in the case where the nested type lamination is continuously performed after the macro embossing by the heated embossing roll, the airlaid nonwoven fabric sheet 2 is disposed between the macro embossed convex portions (portions projected from the nonwoven fabric sheet) of the crepe paper 1. The expansion due to the cushioning property is suitably expressed, and when the nonwoven fabric sheet 2 enters between the macro-embossed convex portions of the crepe paper 1, the effect of reducing the gap 40 between the respective sheets is further expressed. At the same time, the crepe of the crepe paper 1 or unnecessary wrinkle elongation is likely to occur, so that the excellent design of the crepe paper surface is easily exhibited.

  The surface temperature of the heating roll is specifically 40 to 140 ° C, preferably 60 to 120 ° C, more preferably 80 to 100 ° C. If the heating temperature is too low, the effect that the embossing becomes clear may not be sufficiently exhibited. On the other hand, when the heating temperature is too high, energy loss is caused, and the sheet or the sheet base may be seized, or the manufactured sheet or sheet base may be hardened. However, it is needless to say that the temperature is set so that the chemical fiber is not melted when the nonwoven fabric sheet contains chemical fibers for embossing the nonwoven fabric sheet.

  Here, the embossing pressure between the pair of embossing rolls in the embossing is an appropriate design matter and may be appropriately adjusted according to the composition and physical properties of each sheet. cm, preferably 10 to 25 kg / cm, more preferably 15 to 20 kg / cm. If the embossing pressure is too low, the effect that the embossing becomes clear may not be sufficiently exhibited. On the other hand, if the embossing pressure is too high, the processed sheet may be torn off.

  In addition, when making a pair of embossing roll into a combination of an elastic roll and a metal roll, it is preferable that the elastic roll is 40-70 about the Shore hardness (Shore hardness) of the surface. If the Shore hardness is too low, that is, if the elastic roll surface is too soft, the sheet or the sheet fabric may be broken. On the other hand, if the Shore hardness is too high, that is, if the surface of the elastic roll is too hard, there is a possibility that embossing does not enter.

  The micro embossing applied to the crepe paper may be applied in advance prior to the macro embossing or may be applied simultaneously with the macro embossing.

<Physical properties and composition of crepe paper and crepe paper surface>
The crepe paper 1 in the kitchen paper X1 of the present invention contains 90% or more of hydrophilic fibers. By setting the crepe paper to 90% or more, the above-described effects specific to the crepe paper are exhibited. Here, the content of the hydrophilic fiber is preferably 98% or more, more preferably 100%.
About this numerical range, if it is at least 90% or more, although the effect of the kitchen paper of the present invention is exhibited, for example, to give a special function to the crepe paper 1, or by using waste paper pulp as a raw material, Even if it contains fibers or the like that inhibit hydrophilicity derived from this, the effect of the present invention is almost certainly achieved if it is 98% or more, and non-hydrophilic chemical fibers are mixed, or waste paper pulp is used. Since the production of the crepe paper is not as easy as an increase in the number of steps as compared with the production of the crepe paper made of 100% hydrophilic fibers, it is more preferably 100% hydrophilic fibers.

  Here, as the hydrophilic fiber, wood pulp and rayon fiber are desirable. Furthermore, wood pulp which is virgin pulp is most preferable, and it is desirable to use 100% of this as raw material fiber. Further, among wood pulps, LBKP (hardwood kraft pulp) and NBKP (conifer kraft pulp) are most preferable. This is because these fibers are generally used for crepe paper in hygienic applications, and there is an advantage that existing equipment can be used without any problems. However, when LBKP and NBKP are used, the properties of the paper differ depending on the blending ratio, which is important. In the kitchen paper of the present invention, when blending and using them, the blending ratio of NBKP is increased. That is, it is desirable that NBKP is 50% or more, preferably 70% or more. NBKP is long and firm compared to LBKP, so it is easy to impart embossing and to easily develop the desired strength required for kitchen paper.

  As described above, when the constituent fibers of the crepe paper 1 are summarized, in the kitchen paper of the present invention, the most preferable fiber type and blending form are composed of NBKP and LBKP, and are composed of 100% pulp fiber containing 50% or more of NBKP. is there.

  The paper making of the crepe paper 1 can be produced by a known paper making process in which a paper making raw material mainly composed of the above-mentioned raw material fibers is subjected to a wire part, a press part, a dryer part, a creping part, a calendar part and the like. The crepe is preferably applied by a dry crepe method.

  Here, the kitchen paper X1 of the present invention has a crepe height difference of 60 to 70 μm on the surface of the crepe paper, a distance between crepe vertices of 35 to 45 μm, and a whiteness measured from the side of the crepe paper by 8 sheets. It is desirable that it is 77 to 98%. This means that while having the liquid absorption performance and elongation required for kitchen paper X1, it has excellent surface smoothness, high whiteness in the product form, and is excellent in design and appearance. To do. This configuration is difficult to achieve with kitchen paper in which conventional crepe papers are laminated. This is due to the fact that the crepe of the crepe paper is appropriately stretched after lamination due to the cushioning property of the air laid nonwoven fabric, and the air laid nonwoven fabric sheet 2 having a large thickness and a high light scattering property. It is presumed that the combination of the nonwoven fabric sheets is combined.

  In addition, about whiteness, about 1-7 sheets, about whiteness, the difference with the thing which laminated crepe papers or the nonwoven fabric sheet is measured due to the thinness of kitchen paper. However, whiteness does not feel visually superior or inferior, but the whiteness increases as the number of stacked sheets increases, and if it is 8 or more, the difference becomes clear and the difference in whiteness can be visually felt . In addition, the difference is assured with 10 sheets, and even when the number is 10 or more, there is almost no change in whiteness due to an increase in the number of stacked sheets. The effect of high whiteness in this 8 stack is that the general product form of kitchen paper is a roll form and a pop-up form as described above, and is considered to be commercially available in a state where about 50 sheets are stacked. In this way, the product form gives a hygienic impression, and is thus extremely useful in terms of product appeal. The whiteness is in accordance with JIS P 8148, and can be measured with a known spectral whiteness meter or spectral color difference meter.

Here, regarding the crepe height difference, the crepe rate of the crepe paper base paper is preferably 13 to 35% in order to make the above range. With this design, the above range can be obtained by lamination with an airlaid nonwoven fabric sheet.
The crepe rate in the present invention can be calculated by (((peripheral speed of the dryer during papermaking) − (peripheral speed of the reel)) / (peripheral speed of the dryer during papermaking) × 100).
Further, in the crepe paper in the kitchen paper of the present invention, it is desirable that the thickness of the non-embossed portion is 140 to 250 μm. The solid embossing, liquid absorption, anti-back-through prevention and the like are sufficiently exhibited, and the action and effect of the kitchen paper of the present invention is more reliably expressed.
The crepe height difference and the crepe interval can be measured by using a laser microscope.

  Moreover, in order to achieve the whiteness measured from the crepe paper side with 77 sheets of the above-mentioned 10 sheets, it is necessary to use exposed pulp fibers as the wood pulp. However, it is difficult to achieve this whiteness simply by using bleached pulp, and this can be suitably achieved by adopting a configuration in which the air-laid nonwoven fabric sheet and crepe paper of the present invention are laminated and integrated in a nested manner.

As for the design of the crepe paper, it is desirable that the basis weight of the crepe paper is 10.0 to 40.0 g / m ² and the dry longitudinal paper force (Fgk) is 800 to 2000 cN. When the basis weight of the crepe paper is less than 10 g / m ^{2, the} crepe paper is easily torn, and the liquid absorbency deteriorates. When the basis weight exceeds 40 g / m ² , the crepe paper becomes hard, and the usability decreases when used. Further, when the dry longitudinal paper strength of the crepe paper is less than 800 cN, the strength is low and the processability deteriorates, and when it exceeds 2000 cN, it becomes difficult to cut at the perforation line when used later.

<Lipophilic oil>
On the other hand, the kitchen paper X1 of the present invention desirably has a lipophilic oil agent supported on the non-woven sheet facing surface of the crepe paper 1 in order to improve the retention of absorbed oil.
Here, the area of the supporting surface is at least approximately 50% or more of the sheet surface, preferably 80% or more, and particularly preferably the entire surface. Finely adjust according to the relationship with oil retention. In the case of partial support, it is preferable to support the support part in a scattered manner, for example, in a mesh pattern, a lattice pattern, or a dotted pattern in a plan view. The advantage of partial loading is that it is difficult to inhibit the adhesion of the two layers via macro embossing. Of course, the entire surface is desirable in terms of oil retention.

  By supporting the lipophilic oil agent on the nonwoven fabric sheet facing surface of the crepe paper 1, the oil absorbed from the nonwoven fabric sheet surface is stopped on the surface, and the retention of the absorbed oil in the voids is increased. As well as the prevention of slipping out, the prevention of bleeding due to the return of oil to the nonwoven fabric sheet is enhanced.

  As a method for supporting the oleophilic oil agent on the crepe paper, before the lamination with the non-woven fabric sheet 1, the lipophilic oil agent is applied to the surface to be bonded to the non-woven fabric sheet 2 by coating, coating, spraying, or the like. Achieved. In the case of spraying, a known spray device that sprays the drug on the sheet can be used, and if coating is performed, a known coating machine or printing machine can be used. Coating and coating are advantageous in that they can be partially supported.

  The content of the lipophilic oil agent is preferably 1 to 20% by weight of the sheet weight. If the amount is less than 1% by weight, a sufficient effect may not be exhibited. If the amount exceeds 20% by weight, there is a high possibility that the hydrophilic functions such as moisture absorption of the kitchen paper are inhibited.

Here, specific examples of lipophilic oils include hydrocarbons, liquid paraffin, triglycerides, fatty acid amides, acrylic acid ester copolymers, sucrose esters, and isostearic acid esters. Of these, liquid paraffin and triglyceride are suitable.
Liquid paraffin is excellent in terms of oxidation stability and is particularly suitable.
When triglycerides are used, those consisting of saturated fatty acids having 6 to 12 carbon atoms, particularly medium chain fatty acids are particularly preferred. By being saturated, it is excellent in oxidation stability, and by making the number of carbons 6 to 12, the impartability to the sheet base becomes good with an appropriate molecular weight. In addition, the triglyceride form is more effective in enhancing the oil diffusion and permeability than the simple linear fatty acid.

<Composition and physical properties of non-woven sheet>
The nonwoven fabric sheet 2 in the present invention contains 40% or more of hydrophilic fibers, preferably 50% or more, more preferably 85% or more. Specifically, it is a non-woven sheet made of 100% hydrophilic fibers. By containing 40% or more of hydrophilic fibers, moisture absorption on the nonwoven fabric sheet surface is suitably exhibited. If it is less than 40%, not only the water absorbability of the nonwoven fabric sheet itself is deteriorated, but also the affinity of crepe paper containing 90% or more of hydrophilic fibers is also deteriorated. As a product, moisture transfer from the nonwoven fabric sheet 2 to the crepe paper 1 and adhesion maintenance are not sufficient.

  Here, typical examples of the hydrophilic fiber include pulp fiber and rayon fiber, and pulp fiber is particularly preferable. Pulp fibers have good hydrophilicity and rich cushioning properties and are suitable for airlaid processes. In particular, a pulp fiber having a fiber length of 1.0 to 12.0 mm is preferable. It is easy to form an interfiber gap that brings about a capillary phenomenon that sufficiently exhibits the liquid absorption performance of the kitchen paper X1 of the present invention.

  Among the pulp fibers, wood pulp, particularly wood pulp which is virgin pulp is most preferable, and it is desirable to use 100% as a raw fiber for hydrophilic fibers. It is preferable from the viewpoint of liquid absorption performance such as water and oil absorption speed, liquid retention, and the like, and easy production. Further, among wood pulps, LBKP (hardwood kraft pulp) and NBKP (conifer kraft pulp) are most preferable. When these LBKP and NBKP are used, they can be blended and used, and the blending ratio in that case is arbitrary. However, NBKP is easy to make the fiber length suitable for embossing and airlaid methods, so NBKP is desirably 50 to 100%, preferably 70 to 100%. The blending of LBKP is desirable in terms of flexibility, and may be blended appropriately in consideration of this point. However, LBKP may not be blended. In consideration of the design properties due to whiteness, bleached pulp fibers are used as the wood pulp.

As the fibers other than the hydrophilic fibers, various known chemical fibers used for kitchen paper can be appropriately selected. As described above, in the nonwoven sheet of kitchen paper of the present invention, the ratio of hydrophilic fibers is large, and it is desirable that the fibers are natural fibers such as pulp fibers and rayon fibers, particularly wood pulp. It is desirable to mix fibers that do not interfere with the cushioning property of the airlaid method, such as fibers), and develop a bulkiness.
Examples of chemical fibers include polyolefin fibers, polyamide fibers, and polyester fibers.

  Here, the nonwoven fabric sheet 2 of this invention is manufactured by the airlaid method. This airlaid method is a method in which relatively short fibers are deposited by an air flow and formed into a sheet by an adhesive or the like, and the fiber orientation is innumerable at the surface and in the vicinity thereof. , The constituent fibers are dispersed in a three-dimensional random state, and there are many inter-fiber voids extending in the thickness direction of the sheet, and even for oils with higher viscosity than water While exhibiting a good absorption rate, it has excellent cushioning properties and effectively exhibits the action effect of the kitchen paper of the present invention. In the kitchen paper of the present invention, fiber orientation by the airlaid method described above is an important feature. Therefore, hydroentanglement treatment that inhibits three-dimensional fiber orientation by the airlaid method is performed. Desirably not.

  As the adhesive used for bonding the fibers, a known adhesive used for an airlaid nonwoven fabric sheet is used in consideration of the essential use of touching the food of kitchen paper. PVA (polyvinyl alcohol), CMC (carboxyl methyl cellulose), starch, etc. can be illustrated. If it is the same as what is used for adhesion | attachment of the above-mentioned crepe paper and a nonwoven fabric sheet, adhesion | attachment of sheets will become favorable.

On the other hand, the air-laid nonwoven fabric according to the present invention desirably has a basis weight (weight per unit area) of 45.1 to 55 g / m ² and a dry longitudinal paper strength of 45.1 to 600 cN. If the basis weight of the nonwoven fabric sheet is less than 45.1 g / m ² , it will be difficult to maintain the paper strength of the kitchen paper as a whole, and the liquid absorbability may also be reduced. If it exceeds 70 g / m ² , the thickness may be too large to be processed, and the strength may be too strong to cause a problem with cutting at the perforation line described later. Further, if the nonwoven sheet has a dry longitudinal paper strength of less than 300, the strength is low and processability deteriorates, and if it exceeds 1000, it may be difficult to cut at the perforation line during use.

<Characteristic liquid absorption>
The kitchen paper X1 of this invention can have the characteristic structure regarding the following liquid absorption property by taking the above structure.
That is, the kitchen paper X1 of the present invention is overlaid on the filter paper placed on a horizontal table so that the nonwoven fabric sheet is further upward and the crepe paper is downward, and 1000 μL of salad oil is added from the nonwoven fabric sheet side. 4 seconds after dropping, the amount of oil see-through defined by the weight of the salad oil transferred to the filter paper is 0.25 g or less.
In the present invention, since the oil absorbed by the nonwoven fabric sheet is firmly held in the gap between the crepe paper and the macro emboss, such an amount of oil penetration can be achieved.

Furthermore, the kitchen paper X1 of the present invention is overlaid on a filter paper placed on a horizontal table so that the nonwoven fabric sheet is further upward and the crepe paper is downward, and 1000 μL of salad oil is added from the nonwoven fabric sheet side. 4 seconds after dropping, another filter paper is further stacked on the non-woven fabric sheet side, and a bottom smoothing, a bottom surface area of 56 cm ² and a weight of 70 g are placed thereon, and after another minute, the other filter paper is placed. The return amount of the oil defined by the weight of the salad oil transferred to is 0.7 g or less.

  In the kitchen paper X1 of the present invention, the oil is instantaneously absorbed by the nonwoven fabric sheet and further transferred to the crepe paper laminated thereon due to the extremely fast oil absorption speed of the nonwoven fabric sheet 2, and the crepe paper 1 and Since oil is retained in the gaps between the macro embosses, such an oil return amount can be achieved.

  This characteristic liquid-absorbing configuration is achieved with the configuration of the invention according to claim 1 of each of the above-described sheets as an essential feature. In conventional products, it has been difficult to achieve both such characteristic liquid absorbency, ease of manufacture and convenience, but the kitchen paper of the present invention is extremely characteristic in that both are compatible. In addition, achievement of this configuration also proves that it is excellent in applications for absorbing excess oil in fried foods.

<Perforation line>
On the other hand, the kitchen paper X1 of the present invention preferably has a perforation line 5 for cutting as shown in FIG. The cut tie ratio of the perforation 5 is preferably 5: 1 to 8: 1 and the tie portion is preferably 0.75 to 1.25 mm. The perforation strength is preferably 200 to 500 cN.

  In this way, it is possible to effectively prevent cutting and stretching of kitchen paper in which crepe papers are laminated, which is a disadvantage of conventional kitchen paper, and fluffing of the cut surface of kitchen paper made of only a nonwoven sheet, and a winder. The risk of paper breaks at the perforation line during winding is greatly reduced. And this structure can be achieved by laminating and integrating the air laid nonwoven sheet and the crepe paper in a nested format, and more effective by the basis weight, embossed structure, and dry tensile strength of each of the above preferred examples. Is achieved.

  The perforation line 5 is preferably arranged in a direction intersecting with the longitudinal direction (also referred to as MD direction) of the crepe paper, and preferably in a direction orthogonal.

  The perforation strength is measured according to the paper strength and elongation measurement method based on the above-mentioned JIS P 8113 with a width of 50 mm and a perforation line positioned between the gripping intervals. .

<Rolled kitchen paper products>
The above-described kitchen paper X1 of the present invention is suitable for forming a roll-shaped kitchen paper product X2 by, for example, winding it around a tube core having a width substantially equal to the width of the paper in the short direction.

  In this case, as the tube core, a known one used for this type of kitchen paper X1 can be used. If a general example is shown, the outer diameter (winding diameter) L4 may be about 30 to 50 mm, and the width H may be about 100 to 250 mm.

  The winding length of the kitchen paper is desirably 8.8 to 30 m, and when the tube core 5 is used, the outer diameter of the kitchen paper product is preferably 90 to 130 mm.

  On the other hand, when the perforation line is provided, it is desirable to provide it in the sheet width direction at predetermined intervals in the sheet longitudinal direction. The interval between the perforations is preferably about 48 to 250 mm. If it is less than 48 mm, it will be too small for actual use, and if it exceeds 250 mm, it will become larger compared to tableware and the like, resulting in poor usability.

  Here, in this kitchen paper product, the whiteness of the kitchen paper of the present invention is especially clear when it is 8 layers, and a clear difference in whiteness appears compared to the conventional product, and the aesthetics on the crepe paper surface is excellent. From the viewpoint of design, it is desirable that the surface of the crepe paper is the outer surface of the winding and the surface of the nonwoven fabric sheet is the inner surface of the winding. In addition, when the laminated sheet is wound into a cylindrical shape, the tension applied on the inner surface of the winding is slightly weaker than that of the outer surface of the winding, so that the tensile strength of the crepe paper is increased in this way. The low tensile strength of the nonwoven fabric sheet is complemented, and problems during production are effectively improved and production becomes easy.

<Test Example 1>
A test for confirming the liquid-absorbing effect of the present invention was conducted and will be described in detail below.
First, samples (Examples and Comparative Examples of the present invention) were prepared and actually measured for water absorption, oil absorption, water absorption speed, oil absorption speed, oil breakthrough, and oil return. The results are shown in Table 1 together with the structure, composition and physical properties of each example.

  In all the nonwoven fabric sheets in each example, the fiber raw material was 100% pulp fiber, and a pulp airlaid nonwoven fabric sheet (manufactured by Habix Co., Ltd.) using an acrylic resin as an adhesive between the fibers was used.

Moreover, all the crepe papers in each example are made of pulp fiber 100% (NBKP: LBKP = 70: 30), and the structure of the macro emboss is the same. The emboss depth of the macro emboss was 1.4 mm, and the emboss top area was 1.8 mm ² .

  The adhesive area ratio of both sheets is 7%, and all the adhesive that bonds the sheets is applied only to the top of the embossed crepe paper (in the case of crepe paper, only one sheet, tip between crepe papers) To Tip type [Comparative Example 2] is 14% adhesion area ratio).

  Furthermore, with respect to an example in which macro embossing is imparted to the nonwoven fabric sheet and macro embossing is not imparted to the crepe paper, the adhesion between the sheets becomes insufficient, which is extremely difficult in terms of processing suitability. Since it was understood that it was clearly inferior to an Example from the direction of the effect of this, it excluded from the comparison object.

  The amount of water absorption was measured after measuring the weight of a dry sample cut to 100 mm square, sufficiently immersing the sample in pure water, then lifting the sample from pure water and measuring the weight after 30 seconds. The value obtained by subtracting the weight in the dry state from the above was defined as the water absorption amount and water absorption retention.

  The amount of oil absorption was measured after measuring the weight of a dry sample cut to 100 mm square, soaking the sample in salad oil for 15 seconds, and then pulling up from the salad oil (Nisshin Oilio Group Co., Ltd.) 25 seconds later The value obtained by subtracting the weight in the dry state from the measured value was defined as the oil absorption amount / oil absorption retention.

  The water absorption rate was measured by dropping 0.3 cc of pure water onto the sample and measuring the time until it was visually recognized that the light reflection from the dropped pure water had disappeared from the sample surface.

  The oil absorption rate is measured by dropping 1000 μL of salad oil (Nisshin Oilio Group Co., Ltd.) onto the sample and measuring the time until the glossiness (tekari) from the dropped oil disappears from the sample surface. did.

  For the oil breakthrough, the sample is further stacked on the filter paper placed on the horizontal table (in the example, the nonwoven fabric sheet is stacked on top and the crepe paper is positioned on the bottom), and 1000 μL of salad oil from above After dripping (Nisshin Oilio Group Co., Ltd.) 4 seconds later, the weight of the salad oil transferred to the filter paper was measured. The weight was calculated from the difference in weight between the filter paper after oil absorption and the filter paper before absorption.

For the return of oil (oil retention), the sample is further stacked on the filter paper placed on the horizontal table (in the example, the nonwoven fabric sheet is stacked on top and the crepe paper is stacked on the bottom). 4 seconds after dropping 1000 μL of salad oil (manufactured by Nisshin Oillio Group Co., Ltd.), another filter paper is placed on top of the sample, and the bottom surface is smoothed, the bottom area is 56 cm ² and the weight is 70 g. Then, after 1 minute, the weight of oil defined by the weight of salad oil transferred to the other filter paper was measured. The weight was calculated from the weight difference between another filter paper after oil absorption and another filter paper before absorption.

  From the results of Table 1, it can be confirmed that the examples of the present invention are superior in liquid absorption performance as compared with Comparative Examples 1 and 2 composed of crepe papers. Further, even when compared with Comparative Example 3 consisting only of a non-woven sheet, the oil has excellent oil penetration and oil return, and the water absorption is almost the same. Furthermore, even if it compares with the comparative examples 4 and 5 which are lamination | stacking of a crepe paper and a nonwoven fabric sheet but the structure of embossing is different, Examples 1-5 of this invention are excellent in the point of a back-through and an oil return. .

  From this test, it was confirmed that the kitchen paper of the present invention is superior in terms of liquid absorbency as compared with kitchen paper not having the configuration of the present invention according to the comparative example.

<Test Example 2>
Next, a test for confirming the effects of the suitability for processing (manufacturability) and the ease of cutting at the perforation line (convenience) of the present invention was carried out and will be described in detail below.
Samples used in the test as the basic ones obtained by laminating a nonwoven fabric sheet having a basis weight of 28.1 g / m ² crepe paper and 45.2 g / m ^2, the presence or absence of embossing to the nonwoven fabric sheet, the length of the tie part, cut The contrast was changed. Details are shown in Table 1.

All samples with embossed crepe paper and non-woven sheet are all in a nested form.
In addition, the nonwoven fabric sheet in each example used the pulp airlaid nonwoven fabric sheet | seat (made by Havix Co., Ltd.) whose fiber raw material is 100% pulp fiber, and used acrylic resin for the adhesive agent of fibers.

Moreover, all the crepe paper in each example consists of 100% of pulp fibers (NBKP: LBKP = 70: 30), and the structure of the macro embossing in the sample to which the macro embossing is given is the same. The emboss depth of the macro emboss was 1.4 mm, and the emboss top area was 1.8 mm ² . The adhesion area ratio of both sheets is 7%.

  The test method and evaluation were to confirm the suitability of processing by judging whether or not tearing occurred when winding with a winder at a winding speed of 60 m / min for 600 m. Was evaluated with ○. For ease of cutting, 25 consumers actually cut with a perforation line, and for each sample, 5 points that were easy to cut and look good after cutting, or easy to cut, or cut If the appearance of the subsequent cut surface is good, it is rated as 0 points, and if the appearance of the cut surface after cutting is poor, it is evaluated as -5 points. . Less than 4 points were set as x.

  As can be understood from the results of Table 2, a sample that does not satisfy the scope of the present invention is evaluated as being bad in at least one of processability and ease of cutting. From this, it can be understood that the configuration of the present invention is an important configuration in terms of workability and ease of cutting.

<Test Example 3>
Since the test for confirming the effect on the design property of the present invention, particularly the whiteness, was performed, it will be described in detail below. The results are shown in Table 4. Samples 1 to 5 are examples of the present invention, in which crepe paper and a nonwoven fabric sheet are laminated and integrated in a nested format, and samples 6 to 10 are used for samples 1 to 5. The crepe paper is laminated and integrated in a nested manner using the same crepe paper. In addition, Samples 11 to 15 were obtained by laminating and integrating crepe papers in a nested format using a crepe paper base using the same papermaking raw material as Samples 1 to 10 and changing only the basis weight to 28 g / m ^2. It is. In addition, the macro embossing structure and application conditions for the crepe paper of each sample were all the same. For samples 1 to 5 which are examples of the present invention, the macro embossing for the crepe paper and the embossing conditions for the nonwoven fabric sheet were the same.

  In addition, the nonwoven fabric sheet used was a pulp air-laid nonwoven fabric sheet (manufactured by Habix Co., Ltd.) in which the fiber raw material was 100% pulp fiber and an acrylic resin was used as an adhesive between the fibers.

Moreover, all the crepe papers in each example are made of 100% pulp fibers (NBKP: LBKP = 70: 30), and the configuration of macro embossing of the crepe papers is all the same. The emboss depth of the macro emboss was 1.4 mm, and the emboss top area was 1.8 mm ² . The adhesion area ratio of both sheets is 7%.

  The whiteness was measured using Nippon Denshoku Industries PF-10. In addition, the measurement was performed by stacking eight samples, and the samples having a laminated structure of the nonwoven fabric sheet and the crepe paper were measured with all the samples so that the crepe paper was on the upper side.

  From Table 3, the samples 1 to 5, which are examples of the present invention, all have a high whiteness of 77 or more, whereas the samples 6 to 10 and the samples 11 to 15 are less than 75. It has become. From this, it can be understood that by taking the configuration of the present invention, it has a high designability as compared with conventionally laminated crepe papers.

<Test Example 4>
Since the test for confirming the design property of the present invention, particularly the smoothness of the surface, was conducted, it will be described in detail below.
About the surface property of the samples 1-15 created in Test Example 2, the crepe interval and the crepe height difference were measured. The results are shown in Table 4 below.

  The crepe paper interval and the crepe height difference were measured with a Keyence laser microscope VK-9500.

  From Table 4, Samples 1 to 5 which are examples of the present invention have a lower crepe height difference and a wider crepe interval than Samples 6 to 15. Thereby, it can be understood that the present invention has a smooth surface and excellent design.

  From the above, it was confirmed that the kitchen paper of the present invention is secured in terms of processability and ease of tearing, and has an effect higher than that of the conventional liquid absorbency.

  DESCRIPTION OF SYMBOLS 1 ... Crepe paper, 2 ... Airlaid nonwoven fabric sheet, 5 ... Perforation line, 10, 20 ... Macro embossing (There may be unit macro embossing), 10t, 20t ... Top part of macro embossing, 10w, 20w ... Macro embossing Side wall, 30 ... adhesive, D ... emboss depth, 40 ... gap, X1 ... kitchen paper, X2 ... kitchen paper product.