WO2018061314A1 - Kitchen paper - Google Patents

Abstract

Kitchen paper having a first sheet and a second sheet integrated in a nested form, the surfaces thereof that form embossed protrusions facing each other, said first sheet having a plurality of first embossed protrusions and corresponding first embossed recessions formed on the front and rear thereof, and said second sheet having a plurality of second embossed protrusions and corresponding second embossed recessions formed on the front and rear thereof. The first and second embossed recessions have a triangular shape having both a peak and a base in the planar view. The second embossed recessions are arranged, rotated by 180°C relative to the first embossed recessions in the planar view, between the first embossed recessions. The base of the first embossed recessions and the peak of the second embossed recessions are arranged on a first straight line.

Description

Kitchen paper

The present invention relates to kitchen paper.

Some conventional kitchen paper has a laminated structure in which sheets of crepe paper or the like subjected to embossing are laminated. In this kitchen paper, a space for holding oil and the like is provided between the stacked sheets in order to impart oil and moisture absorption performance. Further, in this type of kitchen paper, a portion where the embossing of the sheet is not formed on the line is formed between the sheets, and an oil component or the like is allowed to pass through this portion so that the absorption rate of the oil component or the like is increased. .

Some kitchen papers have a structure formed by laminating two sheets of crepe paper that are embossed to form a convex portion on one surface and a concave portion corresponding to the convex portion on the other surface. And the laminated structure in such kitchen paper has a tip-to-tip type in which the tops of the convex parts of two crepe papers are bonded to each other, and the top part of the convex part of one of the crepe papers. The other crepe paper is divided into the Nested type in which the convex portions are alternately positioned and bonded so that they are located at portions that are not convex portions (positions that are not convex when viewed from one facing crepe paper). It is done.

For example, FIG. 2 of Japanese Patent Publication No. 6-28951 (Patent Document 1) discloses sanitary paper such as kitchen towels having a laminated structure in the Tip to Tip format. U.S. Pat. No. 8,409,404 (Patent Document 2) discloses a kitchen paper having a nested structure.

Japanese Patent Publication No. 6-28951 U.S. Pat. No. 8,409,404

However, the structure of Patent Document 1 (tip-to-tip type laminated structure) has a large area in contact with the object of use such as tableware and foodstuffs, and embossed space (a part where non-embossed parts face each other) when a load is applied during use. Is easy to collapse. For this reason, the oil or the like is hardly absorbed into the kitchen paper, and the oil or the like held in the space in the kitchen paper is likely to ooze out.

In addition, the structure of Patent Document 2 (nested type laminated structure) can reduce the contact area with the object to be used as compared to the tip-to-tip type laminated structure, but the embossing space is small, so that Even when the embossed space is crushed slightly when it is subjected to a load, it is difficult to absorb the oil and the like, and the absorbed oil oozes out.

An object of the present invention is to provide a kitchen sheet in which the absorption performance is hardly lowered even when a load is applied during use.

In order to solve the above-described problem, according to one embodiment, the first embossed convex portion and the corresponding first embossed concave portion are formed on the front and back surfaces, and the second embossed convex portion corresponds to the first sheet. A kitchen paper in which a plurality of second sheets each having a plurality of second embossed recesses formed on the front and back are integrated in a nested manner with the formation surface of the embossed projections facing each other, wherein the first and second The embossed concave portion of the first embossed concave portion has a triangular shape having a top and a bottom in plan view, and the second embossed concave portion is rotated by 180 ° in plan view with respect to the first embossed concave portion. A kitchen paper is provided that is disposed between the first embossed recess and the bottom of the first embossed recess and the apex of the second embossed recess on a first straight line.

According to one embodiment of the present invention, it is possible to provide kitchen paper in which the absorption performance is unlikely to deteriorate even when a load is applied during use.

It is a figure which shows the kitchen paper which concerns on embodiment of this invention. It is the figure which expanded a part (P1 part) of FIG. FIG. 3 is a perspective view of a cross section taken along line AA in FIG. 2. FIG. 3 is a perspective view of a cross section taken along line BB in FIG. 2. FIG. 3 is a perspective view of a cross section taken along the line CC of FIG. 2. It is a figure explaining the method of the attenuation test at the time of a load. It is a figure explaining the measuring method of oil absorption performance. It is a figure which shows the kitchen paper which concerns on the comparative example 1. FIG. It is the figure which expanded a part (P2 part) of FIG. It is a perspective view of the DD line cross section of FIG. FIG. 12 is a perspective view of a cross section taken along line EE in FIG. 11. It is a perspective view of the FF line cross section of FIG.

In the first aspect of the present invention, a first sheet in which a plurality of first embossed convex portions and corresponding first embossed concave portions are formed on the front and back sides, and a second embossed surface corresponding to the second embossed convex portions. A kitchen paper in which a plurality of concave sheets and second sheets formed on the front and back sides are integrated in a nested manner with the formation surfaces of the embossed convex parts facing each other, wherein the first and second embossed concave parts are flat. It is a triangular shape having both a vertex and a bottom when viewed, and the second embossed recess is disposed between the first embossed recesses in a form rotated by 180 ° in a plan view with respect to the first embossed recess, The base of the first embossed recess and the apex of the second embossed recess are arranged on a first straight line.

In the first aspect of the present invention, the triangle-shaped first embossed recess and the second embossed recess in a plan view are rotated by 180 ° with respect to each other. They are arranged so that the vertices of the triangles in the emboss are aligned on the same straight line. Thereby, when it sees in the direction where the 1st straight line extends, between the wall part formed in the side of the 1st embossing convex part, and the wall part (a pair of wall parts) formed in the side of the 2nd embossing convex part A space can be configured. Such a pair of wall parts become a part with comparatively high intensity | strength in kitchen paper. Therefore, since an emboss space can be constituted by such a pair of wall parts, each emboss space becomes difficult to be crushed.

Further, the pair of wall portions constituting the embossed space are arranged in a staggered pattern when viewed in the direction in which the first straight line extends. In other words, the space (an embossed space that is not easily crushed) configured by a pair of wall portions is arranged so as to intersect linearly. Thus, the arrangement of the embossed spaces intersecting on a straight line can be an arrangement that is difficult to collapse due to the structure. Therefore, the space between the first sheet and the second sheet is not easily crushed, and a space for absorbing oil or the like can be ensured when using kitchen paper.

As a result, even when kitchen paper is used, a space for absorbing oil and the like between the stacked sheets can be secured, and a decrease in oil holding power due to load can be prevented. Moreover, since it is a nested type laminated structure, the contact area with the object to be used can be reduced, and the space in the kitchen paper is not easily crushed even when a load is applied during use.

In addition, the absorption speed can be maintained and the embossing space can be increased without providing a line-like space (hereinafter referred to as a line) having no embossed irregularities between the embossed blocks, so that oil and the like are absorbed. Space can be enlarged. Further, the basis weight and paper thickness can be reduced, and the thickness of the kitchen paper can be reduced.

In the second aspect of the present invention, the bottom of the other first embossed recess and the apex of the other second embossed recess are arranged on a second straight line parallel to the first straight line. The other second embossed recesses are arranged so as to face the first embossed recesses on the first straight line and are rotated by 180 ° in a plan view with respect to the first embossed recesses. Has been.

The other first embossed recesses and the other second embossed recesses have the same emboss structure as the first embossed recesses and the second embossed recesses arranged on the first straight line.

In the second aspect of the present invention, similarly to the first aspect, the other first embossed recesses and the other second embossed recesses in the direction rotated by 180 ° with respect to each other in plan view. The bases of the triangles in the embossed recesses and the apexes of the triangles in the other second embosses are arranged on the same straight line.

Thus, even between the other first embossed recesses and the other second embossed recesses, the portion having a high strength when viewed in the direction in which the second straight line extends (the wall portion of the other first embossed convex portion and the other A pair of wall portions formed of the wall portions of the second embossed convex portion) and a portion that absorbs oil or the like (embossed space formed between the pair of wall portions) can be arranged in a straight line with good balance. . For this reason, the embossed space is not easily crushed.

In addition, since the pair of wall portions constituting the embossed space are also arranged in a staggered manner when viewed in the direction in which the second straight line extends, it is possible to arrange the high strength portions in a straight line with good balance. The space becomes more difficult to collapse. For this reason, it is possible to prevent a decrease in oil retaining force due to a load during use.

In addition, in the second aspect, the other second embossed recess faces the first embossed recess in a form rotated by 180 ° in a plan view with respect to the first embossed recess on the first straight line. Are arranged to be. In this case, the other first embossed recess is arranged so as to face the second embossed recess in a form rotated by 180 ° in a plan view with respect to the second embossed recess on the first straight line.

With such an arrangement, the pair of wall portions constituting the embossed space are arranged in a staggered manner when viewed in a direction orthogonal to the first straight line. With this configuration, the embossed space formed by the pair of wall portions can be arranged so as to intersect linearly. Therefore, the embossed space that is hard to be crushed can be configured in a straight line also in the direction in which the first straight line and the second straight line are arranged in a difficult-to-crush arrangement. As a result, according to the second aspect, it is possible to make the embossed space less likely to be crushed by the entire kitchen paper, and it is possible to reliably prevent a decrease in holding power such as oil due to a load.

In the third aspect of the present invention, the triangular shape is a regular triangle. By making the shape of each embossed recess into a regular triangle shape in plan view, the strength of the embossing itself can be increased. Therefore, even if a load is applied at the time of use, the embossed space is not easily crushed, and the kitchen paper in which the absorption performance is not easily lowered can be reliably obtained.

In the fourth aspect of the present invention, the wall portions of the first embossed convex portion and the second embossed convex portion are tapered. By adopting such a taper structure, it is possible to arrange embossed convex portions in which the cross-sectional shape of the pair of wall portions intersects along the direction orthogonal to the first straight line. It is possible to arrange the embossed spaces that are not easily crushed against the load in a well-balanced manner.

In the fifth aspect of the present invention, the density of the embossed recesses is 13 to 24 / cm ² . Here, the density of the embossed space means the number of embossed recesses with respect to the area of the stacked sheets. By setting each embossed concave portion to such a density range, even when a load is applied during use, the embossed space is not easily crushed, and kitchen paper in which the absorption performance is unlikely to deteriorate can be obtained with certainty.

In this specification, the triangular shape includes not only a shape in which the vertex of the triangle forms a corner, but also a shape in which the vertex is rounded in a curved shape.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments, and the following embodiments are not departed from the scope of the present invention. Various modifications and substitutions can be made.

FIG. 1 is a diagram showing kitchen paper according to the present embodiment. FIG. 2 is an enlarged view of a part (P1 portion) of FIG. Further, FIG. 3 is a perspective view of a cross section taken along line AA of FIG.

1 to 3, reference numeral 1 denotes a kitchen paper according to the present embodiment. The kitchen paper 1 is a kitchen paper in which two embossed crepe papers 3 and 5 are laminated in a nested format.

The crepe paper 3 is formed with a plurality of embossed convex portions 7A (embossed convex portions corresponding to the embossed concave portions 7B) and a plurality of embossed concave portions 7B corresponding to the embossed convex portions 7A on the front and back sides. Each embossed recess 7B has an equilateral triangular shape in plan view.

The embossed concave portion 7B is formed as an embossed concave portion corresponding to the embossed convex portion 7A by pressing a convex embossing roll (not shown) against the crepe paper 3 to form a plurality of embossed convex portions 7A.

On the other hand, on the crepe paper 5, a plurality of embossed convex portions 9A and a plurality of embossed concave portions 9B corresponding to the embossed convex portions 9A are formed on the front and back sides. Each embossed recess 9B has an equilateral triangular shape in plan view.

The embossed concave portion 9B is formed as an embossed concave portion corresponding to the embossed convex portion 9A by pressing a convex embossing roll (not shown) against the crepe paper 5 to form a plurality of embossed convex portions 9A.

In addition, as shown in FIG. 3, since the embossing convex part 9A (corresponding embossing concave part 9B) formed in the crepe paper 5 side of the kitchen paper 1 is under the crepe paper 3, in FIG. 1, FIG. This is indicated by a broken line.

The basis weight of the crepe papers 3 and 5 is 15 to 30 g / m ² . Basis weight is based on JIS P 8124 (1998). When the basis weight of the crepe papers 3 and 5 is adjusted within this range, sufficient liquid diffusibility is obtained when a liquid such as water or oil touches the paper surface, and particularly high water absorption performance is obtained. Moreover, when the basis weight is within this range, flexibility and followability when used as kitchen paper can be obtained.

In the crepe papers 3 and 5, the raw material of the base paper is pulp. As the pulp composition, a known composition in kitchen paper can be used. For example, the blending ratio of the pulp can be 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

The pulp composition is, for example, an appropriate ratio of softwood pulp such as NBKP (conifer kraft pulp) or NUKP (unleaved softwood pulp) and broadleaf pulp such as LBKP (hardwood kraft pulp) or LUKP (hardwood unbleached pulp). Can be used. In particular, it is preferable that the pulp composition has a larger composition than that of the hardwood pulp. The ratio of softwood pulp to hardwood pulp is preferably 50:50 to 80:20.

As shown in FIGS. 2 to 5, the embossed convex portion 7A of the crepe paper 3 is disposed to face the non-embossed portion 13 of the crepe paper 5 (the portion where the embossed convex portion 9A is not provided). On the other hand, the embossed convex portion 9A of the crepe paper 5 is disposed to face the non-embossed portion 11 of the crepe paper 3 (the portion where the embossed convex portion 7A is not provided).

Furthermore, the top of the embossed convex portion 7A of the crepe paper 3 is bonded to the non-embossed portion 13 of the crepe paper 5 with an adhesive (not shown). As a result, a nested stacked structure is formed between the crepe papers 3 and 5.

Note that, as in this example, the top portion of the embossed convex portion 7A of the crepe paper 3 and the non-embossed portion 13 of the crepe paper 5 are bonded to each other so that the bonded portion of the two crepe papers becomes one crepe paper (crepe paper). 3) It can be arranged in a balanced manner on the side. Therefore, a decrease in absorption performance due to the adhesive can be reduced.

In addition, the well-known adhesive employ | adopted as the kitchen paper which has a laminated structure can be used for an adhesive agent. Examples of such an adhesive include cellulosic adhesives such as polyvinyl alcohol, starch, modified starch, and carboxymethyl cellulose.

Moreover, the kitchen paper according to the present embodiment can be manufactured by pasting together crepe paper on which embossing is formed by a known steel rubber embossing method.

Instead of adhering the top of the embossed convex portion 7A of the crepe paper 3 and the non-embossed portion 13 of the crepe paper 5, the top of the embossed convex portion 9A of the crepe paper 5 and the non-embossed portion 11 of the crepe paper 3 are adhered. May be. Further, the top of the embossed convex portion 7A of the crepe paper 3 and the non-embossed portion 13 of the crepe paper 5 are bonded, and the top of the embossed convex portion 9A of the crepe paper 5 and the non-embossed portion 11 of the crepe paper 3 are bonded. May be.

In this example, as shown in FIGS. 2 and 5, the embossed recess 9B (embossed recess corresponding to the embossed projecting portion 9A) is rotated between the embossed recesses 7B and 7B by 180 ° in a plan view with respect to the embossed recess 7B. Is arranged. The embossed recess 7B and the embossed recess 9B are arranged such that the base B1 of the embossed recess 7B and the vertex T2 of the embossed recess 9B are aligned on a virtual straight line L1.

At this time, the embossed recess 7B and the embossed recess 9B adjacent to each other in the X direction are arranged so that the wall 7C of the embossed convex portion 7A and the wall 9C of the embossed convex portion 9A face each other substantially in parallel.

Further, the embossed recess 7B and the embossed recess 9B that are adjacent to each other in the X direction are arranged so that the direction in which the regular triangle is convex (that is, the position of one vertex of the regular triangle) is opposite to each other by 180 °. In this case, the vertex T1 of the embossed recess 7B and the base B2 of the embossed recess 9B are arranged on a straight line (not shown) parallel to the straight line L1.

By disposing the embossed recess 7B and the embossed recess 9B in this way, as shown in FIGS. 2 and 5 (cross-sectional view taken along the line CC in FIG. 2), the wall 7C of the embossed convex 7A and the embossed convex 9A A space S1 (S11 to S14) can be formed between the wall portions 9C (a pair of wall portions). As a result, the embossed space (space S1) that absorbs oil and the like can be formed by the high-strength portions (the pair of wall portions 7C and 9C), so that the embossed spaces (spaces S11 to S14) are not easily crushed.

Further, the pair of wall portions 7C and 9C constituting the embossed space are arranged in a staggered manner along the straight line L1. That is, the space S1 (embossed space that is not easily crushed) configured by the pair of wall portions 7C and 9C can be arranged so as to intersect linearly. Therefore, the space between the crepe papers 3 and 5 is not easily crushed, and a space for absorbing oil or the like can be secured when using kitchen paper.

Therefore, in the kitchen paper of this example, the embossed space is not easily crushed by the load at the time of use, and the absorption performance decreases due to the load (for example, if the embossed space is crushed before absorbing the oil, the oil etc. cannot be absorbed) In the case where the embossed space in which the oil and the like are retained after being absorbed is crushed and the oil is oozed out, the embossed space is crushed and the absorption rate of the oil and the like is reduced).

In addition, the kitchen paper 1 employs a nested stacked structure as described above. Therefore, a contact area with a use object can be made small and the space in kitchen paper can be made hard to be crushed. Moreover, since an absorption speed can be maintained without providing a line etc., emboss space can be increased and the space which absorbs the oil component etc. in kitchen paper can be enlarged. Furthermore, since the basis weight and the paper thickness can be reduced, the thickness of the kitchen paper can be reduced.

The kitchen paper 1 is an example of the kitchen paper of the present invention, the crepe papers 3 and 5 are examples of the first sheet and the second sheet of the present invention, and the embossed convex part 7A and the embossed concave part 7B are These are examples of the first embossed convex portion and the first embossed concave portion in the present invention, and the embossed convex portion 9A and the embossed concave portion 9B are examples of the second embossed convex portion and the second embossed convex portion in the present invention. is there.

1 to 3, the kitchen paper 1 further has a plurality of embossed convex portions 17A and a plurality of embossed concave portions 17B corresponding to the embossed convex portions 17A formed on the front and back sides of the crepe paper 3. . Each embossed recess 17B has an equilateral triangular shape in plan view, like the embossed recess 7B.

Similarly to the embossed concave part 7B, the embossed concave part 17B is formed by pressing a convex embossing roll (not shown) against the crepe paper 3 to form a plurality of embossed convex parts 17A on the crepe paper 3, and corresponding to the embossed convex part 17A. It is formed as a recess.

On the other hand, on the crepe paper 5, a plurality of embossed convex portions 19A and a plurality of embossed concave portions 19B corresponding to the embossed convex portions 19A are formed on the front and back sides. Each embossed recess 19B has an equilateral triangular shape in plan view, like the embossed recess 9B.

Similarly to the embossed concave part 9B, the embossed concave part 19B is formed by pressing a convex embossing roll (not shown) against the crepe paper 5 to form a plurality of embossed convex parts 19A on the crepe paper 5 and corresponding to the embossed convex part 19A. It is formed as a recess.

Similarly to the embossed convex portion 9A (corresponding embossed concave portion 9B), the embossed convex portion 19A formed on the crepe paper 5 is located under the crepe paper 3, and is shown by a broken line in FIGS. Yes.

As shown in FIGS. 1 to 5, the embossed convex portion 17A of the crepe paper 3 is disposed so as to face the non-embossed portion 23 of the crepe paper 5 (the portion where the embossed convex portion 19A is not formed). Further, the embossed convex portion 19A of the crepe paper 5 is disposed to face the non-embossed portion 21 of the crepe paper 3 (a portion where the embossed convex portion 17A is not formed).

Furthermore, the embossed convex part 17A of the crepe paper 3 and the non-embossed part 23 of the crepe paper 5 are adhered by an adhesive (not shown). As a result, a nested stacked structure is formed between the crepe papers 3 and 5.

By adhering the top of the embossed convex portion 17A of the crepe paper 3 and the non-embossed portion 23 of the crepe paper 5, the bonded portion of the two crepe papers is arranged in a balanced manner on one crepe paper (crepe paper 3) side. Can do. Therefore, a decrease in absorption performance due to the adhesive can be reduced.

Instead of adhering the top of the embossed convex portion 17A of the crepe paper 3 and the non-embossed portion 23 of the crepe paper 5, the top of the embossed convex portion 19A of the crepe paper 5 and the non-embossed portion 21 of the crepe paper 3 are adhered. May be. Further, the top of the embossed convex portion 17A of the crepe paper 3 and the non-embossed portion 23 of the crepe paper 5 are bonded, and the top of the embossed convex portion 19A of the crepe paper 5 and the non-embossed portion 21 of the crepe paper 3 are bonded. May be.

In addition, the adhesive agent same as the adhesive agent which adhere | attaches the top part of the above-mentioned embossing convex part 9A, and the non-embossing part 13 can be used for an adhesive agent.

In this example, as shown in FIG. 2, the embossed recess 19B is disposed between the embossed recesses 17B and 17B in a form rotated by 180 ° in a plan view with respect to the embossed recess 17B. The embossed recess 17B and the embossed recess 19B are arranged such that the bottom side B3 of the embossed recess 17B and the vertex T4 of the embossed recess 9B are aligned on a virtual straight line L2.

In this case, the embossed concave portion 17B and the embossed concave portion 19B adjacent to each other in the X direction are arranged so that the wall portion 17C of the embossed convex portion 17A and the wall portion 19C of the embossed convex portion 19A face each other substantially in parallel. Further, the embossed concave portion 17B and the embossed concave portion 19B adjacent to each other in the X direction are arranged so that the direction in which the regular triangle is convex (that is, the position of one vertex of the regular triangle) is opposite to each other by 180 °. In this case, the vertex T3 of the embossed recess 17B and the base B4 of the embossed recess 19B are arranged on a straight line (not shown) parallel to the straight line L2.

As shown in FIG. 4, by disposing the embossed recess 17B and the embossed recess 19B in this manner, a space is also formed between the embossed recess 17B and the embossed recess 19B by a pair of wall portions 17C and 19C (high strength portions). Since S2 (embossed space for absorbing oil or the like) can be formed, each embossed space (spaces S21 to S24) is not easily crushed. Further, since the pair of wall portions 17C and 19C constituting the embossed space are also arranged in a zigzag pattern along the straight line L2, the space between the crepe papers 3 and 5 is not easily crushed, and the oil content is reduced when using kitchen paper. It is possible to secure a space for absorbing the like.

Further, as shown in FIGS. 2 and 3, the embossed recess 17B on the straight line L2 is disposed opposite to the embossed recess 9B on the straight line L1 in a form rotated by 180 ° in plan view. On the other hand, the embossed recess 19B on the straight line L2 is arranged in a form rotated by 180 ° in plan view with respect to the embossed recess 7B on the straight line L1. Note that the plurality of virtual straight lines L1 and the plurality of virtual straight lines L2 are alternately arranged in the Y direction in the figure.

Specifically, in FIGS. 2 and 5, the embossed recess 7B on the straight line L1 and the embossed recess 19B on the straight line L2 are arranged so that the vertex T1 and the vertex T4 of the equilateral triangle face each other. On the other hand, the embossed recess 9B on the straight line L1 and the embossed recess 17B on the straight line L2 are arranged so that the base B2 and the base B3 of the equilateral triangle face each other in parallel.

Further, in the present embodiment, the center C1 of the embossed recess 7B on the straight line L1 and the center C4 of the embossed recess 19B on the straight line L2 are on the straight line L3 (see FIG. 2) in the direction perpendicular to the straight line L1 and the straight line L2. They may be arranged side by side. Similarly, in the present embodiment, the center C2 of the embossed recess 9B on the straight line L1 and the center C3 of the embossed recess 17B on the straight line L2 may be arranged on a straight line parallel to the straight line L3. .

At this time, the pair of wall portions 7C and 9C and the pair of wall portions 17C and 19C constituting the embossed space are arranged in a staggered manner when viewed in the Y direction (direction orthogonal to the straight line L1). That is, the spaces S1 and S2 (embossed spaces that are not easily crushed) configured by the pair of wall portions 7C and 9C are arranged so as to intersect linearly. Therefore, since the embossing space that is not easily crushed can be configured in the Y direction with an arrangement that is not easily crushed, the embossing space is not easily crushed by the entire kitchen paper, and thus it is possible to reliably prevent a decrease in absorption performance due to a load.

Specifically, in the cross section taken along the line BB of FIG. 2 shown in FIG. 4, for example, S23 of the space S2 extends obliquely from the bottom to the right, but C— of FIG. 2 shown in FIG. In the cross section taken along the line C, for example, S13 of the space S1 extends in the diagonally leftward direction from the bottom. As described above, by alternately changing the extending direction of the space (S1 or S2) along the Y direction, it is possible to configure the embossed space that is difficult to be crushed in the Y direction with an arrangement that is difficult to be crushed.

In this example, an embossed recess having a regular triangle shape in plan view is employed. However, for example, an embossed recess having a triangular shape that is not a regular triangle shape may be employed. Triangular structures are generally known to have high strength, and the embossed convex portions corresponding to the embossed concave portions can be increased in strength by adopting triangular embossed concave portions in plan view. Therefore, even if a load is applied during use, the embossed space is not easily crushed, and kitchen paper is obtained in which the absorption performance is unlikely to deteriorate.

Of the triangular shape in plan view, the shape of the embossed concave portion that can increase the strength of the embossed convex portion is preferably the equilateral triangle employed in this example. By making the shape of each embossed recess into a regular triangle shape in plan view, the strength of the embossing itself can be increased. Therefore, even if a load is applied at the time of use, the embossed space is not easily crushed, and the kitchen paper in which the absorption performance is not easily lowered can be reliably obtained.

The embossed convex portion 17A and the embossed concave portion 17B are examples of other first embossed convex portions and other first embossed concave portions in the present invention, and the embossed convex portion 19A and the embossed concave portion 19B are the other in the present invention. It is an example of the 2nd embossing convex part of this, and another 2nd embossing recessed part.

Further, as shown in FIGS. 3 to 5, the wall portion 7C of the embossed convex portion 7A is formed with a taper that inclines from the bottom of the embossed concave portion 7B toward the opening. Further, the boundary between the wall 7C and the crepe paper 3 is a curved surface (not shown). On the other hand, the wall portion 9C of the embossed convex portion 9A is formed with a taper inclined from the bottom of the embossed concave portion 9B toward the opening. The boundary between the wall 9C and the crepe paper 5 is also a curved surface (not shown). As shown in FIG. 5, the wall portion 7 </ b> C and the wall portion 9 </ b> C constitute a space S <b> 1 whose cross section exhibits a substantially parallelogram.

Further, the wall portion 17C of the embossed convex portion 17A is formed with a taper that is inclined from the bottom of the embossed concave portion 17B toward the opening. The boundary between the wall 17C and the crepe paper 3 is a curved surface (not shown). On the other hand, the wall portion 19C of the embossed convex portion 19A is formed with a taper that is inclined from the bottom of the embossed concave portion 19B toward the opening. The boundary between the wall 19C and the crepe paper 5 is also a curved surface (not shown). As shown in FIG. 4, the wall portion 17 </ b> C and the wall portion 19 </ b> C constitute a space S <b> 2 having a substantially parallelogram in cross section.

It should be noted that the taper angle of the embossed convex portions 7A, 17A on the walls 7C, 17C can be in the range of 45 ° to 90 ° with respect to the crepe paper 3. Further, in the wall portions 9C and 19C of the embossed convex portions 9A and 19A, the taper angle can be in the range of 45 ° to 90 ° with respect to the crepe paper 5.

At this time, when viewed in the Y direction, the pair of wall portions 7C and 9C constituting the space S1 and the pair of wall portions 17C and 19C constituting the space S2 intersect with each other so as to intersect with each other. Has been placed. With this configuration, it is possible to configure the embossed space that is less likely to be collapsed in the Y direction with an arrangement that is less likely to collapse. By making the pair of wall portions have such a taper structure, an embossed space that is less likely to be crushed by a load can be disposed in the entire kitchen paper.

The wall portion 7C, the wall portion 9C, the wall portion 17C, and the wall portion 19C are the wall portion of the first embossed convex portion, the wall portion of the second embossed convex portion, and the other first embossed convex portion in the present invention. It is an example of the wall part of this, and the wall part of another 2nd embossing convex part.

In the present embodiment, the density of the embossed recesses can be 13 to 24 / cm ² . When this is converted into the area ratio of the embossed recesses (the total of the areas of the first and second embossed recesses with respect to the area of the kitchen paper in plan view), it becomes approximately 7.2 to 13.2%. By making each embossed recess into such a density range, the space to absorb oil etc. can be increased as much as possible, and even if a load is applied during use, the embossed space is not easily crushed and the absorption performance is not easily lowered. The paper can be obtained reliably.

In addition, the main product aspect of the kitchen paper 1 which concerns on this invention is the roll-shaped thing wound around the paper tube with the strip | belt shape and the perforation line for division | segmentation arranged at appropriate intervals, or a pick-up type, a pop-up type, etc. Although what was called and the sheet paper kitchen paper folded and laminated | stacked can be illustrated, these product aspects are not limited.

Hereinafter, embodiments of the present invention will be described with reference to examples. Specifically, using the kitchen paper according to the embodiment of the present invention (Example 1, Example 2) and a prototype of the kitchen paper having the same embossed structure as a commercially available kitchen paper (Comparative Example 1), the present invention. The effect of was confirmed.
[Example 1]
In Example 1, a kitchen paper having a nested structure shown in FIGS. 1 to 5 was used.

In Example 1, first, the convex emboss corresponding to the emboss pattern (embossed convex portions 7A, 17A and embossed convex portions 9A, 19A) of the crepe paper 3, 5 shown in FIGS. Two acrylic plates on which a pattern is formed are prepared.

The embossed patterns of these acrylic plates are embossed on the crepe papers 3 and 5, respectively, and the crepe paper 3 on which the embossed concave parts 7B and 17B corresponding to the embossed convex parts 7A and 17A are formed, and the embossed convex parts 9A and 19A. The crepe paper 5 on which the embossed recesses 9B and 19B were formed was produced.

In addition, the crepe papers 3 and 5 were made of 100% by mass of pulp fiber material. The crepe papers 3 and 5 were those having a basis weight of 21.2 g / m ² and a paper thickness of 121 μm.

As shown in FIGS. 1 to 3, these crepe papers 3 and 5 have the top portions of the embossed convex portions 7A and 17A and the non-embossed portions 11 and 21 facing each other, and the top portions of the embossed convex portions 9A and 19A and the non-embossed portion 13. , 23 were stacked while being aligned so that they face each other. Moreover, the embossing convex part 9A and the non-embossing part 13 were adhere | attached with the adhesive agent which is not shown in figure. The obtained one has a nested type laminated structure, and this was used as the kitchen paper of Example 1.

In Example 1, the embossed recesses 7B arranged in the X direction (axial center direction of the convex embossing roll) are arranged so that the distance between the centers C1 is 3.9 mm. Further, the embossed recesses 7B arranged in the Y direction (rotating direction of the convex embossing roll) are arranged so that the distance between the centers C1 is 4.5 mm. Further, the embossed recesses 9B arranged in the X direction are arranged so that the distance between the centers C2 is 3.9 mm. The embossed recesses 9B arranged in the Y direction are arranged so that the distance between the centers C2 is 4.5 mm.

In Example 1, a line as in Comparative Example 1 described later is not provided. Other conditions relating to Example 1 are shown in Table 1.
[Example 2]
In Example 2, as in Example 1, a kitchen paper having a nested laminated structure was used.

In Example 2, the embossed recesses 7B arranged in the X direction are arranged so that the distance between the centers C1 is 4.8 mm. Further, the embossed recesses 7B arranged in the Y direction are arranged so that the distance between the centers C1 is 4.7 mm. Further, the embossed recesses 9B arranged in the X direction are arranged so that the distance between the centers C2 is 4.8 mm. The embossed recesses 9B arranged in the Y direction are arranged so that the distance between the centers C2 is 4.7 mm.

In Example 2, the line as in Comparative Example 1 described later is not provided. Other conditions for Example 2 are shown in Table 1.
[Comparative Example 1]
In Comparative Example 1, a kitchen paper having a tip-to-tip type laminated structure shown in FIGS. 8 to 12 was used. 8 to 12, the reference numerals corresponding to those in FIGS. 1 to 5 are added with 100, and a part of the description is omitted.

In Comparative Example 1, first, a convex emboss pattern corresponding to an emboss pattern (emboss convex portions 107A, 117A, emboss convex portions 109A, 119A) in which the unit emboss of the crepe paper 103, 105 shown in FIGS. Prepare two acrylic plates.

By embossing the convex emboss patterns of these acrylic plates on the crepe papers 103 and 105, respectively, the crepe paper 103 has the embossed convex portions 107A and 117A and the embossed concave portions 107B and 117B corresponding to the embossed convex portions 107A and 117A. Are formed on the front and back. The crepe paper 105 has a plurality of embossed convex portions 109A and 119A and a plurality of embossed concave portions 109B and 119B corresponding to the embossed convex portions 109A and 119A on the front and back sides.

The crepe papers 103 and 105 used were base papers having the same conditions as the crepe papers 3 and 5 of Example 1.

As shown in FIGS. 8 to 12, these embossed crepe papers 103 and 105 have the top portions of the embossed convex portions 107A and 117A opposed to the top portions of the embossed convex portions 109A and 119A, and the non-embossed portions 111 and 121, respectively. And the non-embossed portions 113 and 123 of the crepe paper 105 were stacked while being aligned. Further, the tops of the embossed protrusions 107A and 117A and the tops of the embossed protrusions 109A and 119A were bonded with the same adhesive as that used in Example 1.

Embossed concave portions 107B and 119B corresponding to the embossed convex portions 107A and 117A are formed on the surface of the obtained kitchen paper 101 (crepe paper 103 side). On the other hand, on the back surface (crepe paper 105 side) of the kitchen paper 101, embossed concave portions 109B and 119B corresponding to the embossed convex portions 109A and 119A are formed. The obtained one has a tip-to-tip type laminated structure, and this was used as the kitchen paper of Comparative Example 1.

In the kitchen paper of Comparative Example 1, the shape of each embossed protrusion in plan view is substantially square. In Comparative Example 1, a line LN1 is provided between the emboss blocks BL1 as shown in FIG.

In addition, in the comparative example 1, it arrange | positions so that the distance between the centers C101 of the embossed recessed part 107B may be 2.6 mm. Further, the distance between the centers C102 of the embossed recesses 117B is also set to 2.6 mm. Further, the distance between the embossed concave portion 107B arranged on the straight line L101 and the embossed concave portion 107B arranged on the other straight line L101 sandwiching the straight line L102 between the straight line L101 is also 2.6 mm.

Other conditions concerning Comparative Example 1 are shown in Table 1.

About these Example 1, Example 2, and the comparative example 1, the damping property at the time of a load and the oil absorptivity at the time of a load were measured. Each measuring method is as follows.
[Base paper]
<Basis weight>
The basis weight (g / m ² ) of the base paper used in the test is calculated according to JISP 8124 (1998).
<Paper thickness>
Measure the paper thickness (μm / sheet) of the base paper. The thickness of the base paper is measured by fully adjusting the base paper under the conditions of JIS P 8111 (1998) and then dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) under the same conditions. Use to measure.

The specific procedure for measurement is to confirm that there is no dust, dust, etc. between the plunger and the measurement table. Then, lower the plunger on the measurement table and move the dial thickness gauge memory to set the zero point. Match. The plunger is then raised and the sample is placed on the test bench, the plunger is slowly lowered, and the gauge at that time is read. At this time, only the plunger is placed. The terminal of the plunger is made of metal so that a circular plane having a diameter of 10 mm is perpendicular to the paper plane. The load at the time of measuring the thickness is about 70 gf at 120 μm. In addition, let the measured value of thickness be the average value obtained by measuring 10 times.
[Damping test under load]
First, as a test piece 752 of Example 1, Example 2, and Comparative Example 1, a test piece 752 is prepared by cutting a pair of two crepe papers into a size of 12 cm × 12 cm. As shown in FIG. 6, the test piece 752 is composed of 10 sets of cut test pieces 752, and a plastic plate 750 (about 12 cm × 12 cm, thickness 0.8 mm, weight 14.1 g) is placed thereon, As shown on the left side of FIG. 6, the height of the test piece 752 is measured using a JIS Class 1 metal scale. The measurement location (indicated as “756a” in the figure) is the upper end of the plastic plate 750, and the measurement value is the height of the test piece 752. The height of the test piece at this time is defined as the initial thickness.

After measuring the initial thickness, a weight (754) 186 g (about 12 cm × 12 cm, thickness 12 mm) was further placed on the plastic plate 750 placed on the test piece 752, and as shown on the right side of FIG. The height of the test piece 752 is measured using a metal scale. The measurement location (indicated as “756b” in the figure) is the upper end of the plastic plate 750 and the measurement value is the height of the test piece 752, similarly to the initial thickness. The height of the test piece 752 at this time is defined as the thickness at the time of load.

Calculate the decay rate (crush rate) at the time of loading from the measured initial thickness and the thickness at the time of loading. The attenuation rate under load is calculated from the following formula.

・ Damping rate under load (%) = (initial thickness−thickness under load) ÷ initial thickness × 100
The attenuation rate under load was calculated from the initial thickness obtained by one measurement and the thickness under load. Table 1 shows the initial thickness (mm), the thickness at the time of loading (mm), and the attenuation factor (%) at the time of loading in Example 1, Example 2, and Comparative Example 1.
[Measurement of oil absorbency]
The test method of oil absorbency cuts the test piece 702 into 12 cm × 12 cm, similarly to the attenuation test under load. Using an electronic balance (HR300 manufactured by A & D Co., Ltd.), a plastic sheet 700 shown in FIG. 7 (about 12 cm × 12 cm, thickness 0.2 mm, weight 2.7 g, material polypropylene), test Each piece 702, weight 704 (diameter of about 82 mm, thickness of 10 mm, weight of 59 g, material acrylic), and lower paper 708 (5 sheets of copy paper cut into about 12 cm × 12 cm) are measured. After the measurement, a test piece 702 is placed on the plastic sheet 700, and a weight is placed in the center of the test piece 702. The weight 704 is provided with a hole penetrating in the thickness direction. The diameter of the hole is about 12 mm.

After that, weigh 2.3 ml (about 2.0 g) of oil 706 (room temperature salad oil) (Nisshin Oillio Group Nisshin Salad Oil) with a pipette (Thermoscientific, Finnpette F2, 0.5-5 ml). It is dripped from the hole of 704. At this time, the dropping position (embossed portion) is fixed at the center position of the test piece 702 as shown in FIG.

2 minutes after dropping, the weight 704 is removed and the weight (return amount of (3) in the figure) is measured. Thereafter, the plastic sheet 700 is removed, and the weight (the amount of see-through in (2) in the figure) is measured. Then, after measuring the weight of the test piece 702 (absorption amount of (1) in the figure) and placing it on the lower paper 708, 5 minutes later, the weight of the test piece 702 (final retained oil amount in the figure ( 4), the amount of oil in the lower paper (the amount of oil that could not be retained, the amount of final back-through in (5) in the figure).

In Example 1, Example 2, and Comparative Example 2, as shown in FIG. 7, the test piece oil absorption amount (g), the back-through amount (g), the return amount (g), the dropped oil amount (g), and the final test piece amount. Holding amount (g), final strikethrough amount (g), total amount of strikethrough (g), test piece oil absorption amount (%), amount of fallthrough amount (%), return amount (%), final hold amount of test piece The amount (%), the final strikethrough amount (%), and the total strikethrough amount (final strikethrough amount) (%) were measured and shown in Table 1.

Each item such as test piece oil absorption (g) was calculated according to the formulas listed below.

-Test piece oil absorption (g) = Test piece weight 2 minutes after dropping-Test piece weight-Back-through amount (g) = Plastic sheet weight 2 minutes after dropping-Plastic sheet weight-Return amount (g ) = Weight of weight 2 minutes after dropping-Weight of dripping-Dropped oil amount (g) = Test piece oil absorption + Back-through amount + Return amount-Test piece final holding amount (g) = Test piece weight after 5 minutes-Test Piece weight-Final amount of through-through (g) = Weight of base paper after 5 minutes-Weight of under-paper-Total amount of through-through (g) = amount of through-through + final amount of through-through-Test piece oil absorption (%) = Test Single oil absorption ÷ dripping oil amount × 100
・ Back-through amount (%) = Back-through amount / Drip oil amount × 100
・ Return amount (%) = Return amount ÷ Drip oil amount × 100
・ Final specimen holding amount (%) = Final holding quantity ÷ Drip amount of oil × 100
-Final strikethrough amount (%) = Final strikethrough amount / Drip oil amount x 100
・ Total amount of through-through (%) = Total amount of through-through / Drip amount of oil × 100
Test piece oil absorption (g), back-through amount (g), return amount (g), dripping oil amount (g), final test piece holding amount (g), final back-through amount (g), total back-through amount Each measured value of (g) is an average value obtained by performing the measurement three times. From these test piece oil absorption amounts (g), etc., the test piece oil absorption amount (%), the back-through amount (%), the return amount (%), the test piece final holding amount (%), the final back-through amount (%), The total amount of strikethrough (%) was calculated.

[Comparison of damping rate under load]
Comparing the results of the attenuation test during loading from Table 1, in Examples 1 and 2, the thickness before loading is thinner than that in Comparative Example 1. On the other hand, the decay rate (crush rate) at the time of loading is smaller than that of Comparative Example 1. This result has shown that Example 1, 2 is hard to be crushed with respect to a load.
[Comparison of oil absorption]
Comparing the oil absorbability results from Table 1, in Examples 1 and 2, both the oil absorption amount of the test piece with respect to the amount of dropped oil and the final retention amount are higher than those of Comparative Example 1. Further, the return amount of the test piece relative to the amount of dropped oil is lower than that of Comparative Example 1. These results indicate that the oil retention performance of Example 1 is high.

Further, in Examples 1 and 2, all of the amount of through-through, the final amount of through-through, and the total amount of through-through with respect to the amount of dropped oil are lower than in Comparative Example 1. This result shows that in Examples 1 and 2, it is difficult for oil to penetrate through (not easily ooze out).
[Comparison of laminated structures]
Comparing the laminated structures of Examples 1 and 2 and Comparative Example 1, first, in contrast to Comparative Example 1 having a tip-to-tip laminated structure, Examples 1 and 2 have a nested laminated structure. It has become difficult (see FIGS. 3 and 11). This is supported by the results of the above-described attenuation test under load.

Referring to FIG. 2, in the first and second embodiments, when viewed in the direction in which the straight line L1 extends, the spaces S1 (S11 to S14) formed by the pair of wall portions 7C and 9C are arranged in a staggered manner. ing. On the other hand, in Comparative Example 1, as shown in FIG. 11, in the space S101 (S111 to S112), the wall portion 107C of one crepe paper 103 and the wall portion 109C of the other crepe paper 105 are laminated. It is formed by the wall part comprised. Accordingly, the space S101 (S111 to S112) of the comparative example 1 includes the wall portion (for example, 7C) of one crepe paper 3 and the wall portion (9C) of the other crepe paper 5 as in the first and second embodiments. Unlike the space S1 (S11 to S14) formed so as to face each other, they are easily crushed. Therefore, in Comparative Example 1, it is not possible to obtain the effect of spatial arrangement that is not easily crushed as in Examples 1 and 2 in the direction in which the straight line L101 extends.

In the first and second embodiments, the spaces S1 to S2 formed by the walls 7C and 9C are arranged in a staggered pattern when viewed in the direction in which the straight lines L1 and L2 are aligned (the direction orthogonal to the straight line L1). Yes. On the other hand, in the first comparative example, the space S101 (S111 to S112) is easily crushed as described above, and also when viewed in the direction in which the straight lines L101 and L102 are aligned (a direction orthogonal to the straight line L101). Thus, it is not possible to obtain the effect of spatial arrangement that is difficult to be crushed as in the first and second embodiments.

Further, when FIGS. 2 to 5 are compared with FIGS. 9 to 12, in the first and second embodiments, the space S1 and the space S2 configured by the pair of wall portions 7C and 9C intersect in the Y direction. Are arranged as follows. On the other hand, in Comparative Example 1, the spaces S101 to S102 formed by the pair of wall portions 107C and 107C (the pair of wall portions 109C and 109C) are arranged in the same shape in the Y direction.

As described above, the first and second embodiments are different from the first comparative example in the arrangement of the embossed spaces formed between the embossed convex portions, and the first and second embodiments are configured such that the embossed spaces are not easily crushed.

In Examples 1 and 2, since the density of the embossed recesses can be increased compared to Comparative Example 1, the embossed space can be further prevented from being crushed.

From the above results, the kitchen paper of the present invention can reduce the thickness of the paper and maintain the advantages of the nested type that can increase the oil absorption speed, and is not easily crushed and has excellent oil absorption performance during use. I know that.

The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific embodiments, and various modifications and changes can be made within the scope of the invention described in the claims. Is possible.

This international application claims priority based on Japanese Patent Application No. 2016-189638 filed on September 28, 2016, the entire contents of which are incorporated herein by reference.

1 Kitchen paper 3, 5 Crepe paper 7A, 9A, 17A, 19A Embossed convex part 7B, 9B, 17B, 19B Embossed concave part 7C, 9C, 17C, 19C Wall part B1, B2, B3, B4 Bottom side T1, T2, T3, T4 vertex L1, L2 straight line

Claims (5)

1. A plurality of first embossed convex portions and corresponding first embossed concave portions are formed on the front and back sides, and a plurality of second embossed concave portions corresponding to the second embossed convex portions are formed on the front and back sides. A kitchen paper in which the second sheet is integrated in a nested manner with the formation surface of the embossed protrusion facing each other,
   The first and second embossed recesses have a triangular shape having a vertex and a base in plan view,
   The second embossed recess is disposed between the first embossed recesses in a form rotated by 180 ° in a plan view with respect to the first embossed recess,
   The kitchen paper, wherein the bottom of the first embossed recess and the apex of the second embossed recess are arranged on a first straight line.
2. The bottoms of the other first embossed recesses and the vertices of the other second embossed recesses are aligned on a second straight line parallel to the first straight line;
   The other second embossed recess is disposed opposite to the first embossed recess on the first straight line and rotated by 180 ° in a plan view with respect to the first embossed recess. The kitchen paper according to claim 1.
3. The kitchen paper according to claim 1, wherein the triangular shape is a regular triangle.
4. The kitchen paper according to claim 1, wherein wall portions of the first embossed convex portion and the second embossed convex portion are tapered.
5. The kitchen paper according to claim 1, wherein the density of the embossed recesses is 13 to 24 / cm ² .

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