KR20110035872A - Tissue paper for domestic use - Google Patents

Abstract

PURPOSE: A thin paper for home is provided to ensure softness, elasticity, and liquid absorption and to improve bulkiness and decorative property. CONSTITUTION: A thin paper at home without emboss comprises a bulky part of which height is 50-200 um. The both sides of the thin paper are printed by a foaming ink. One side of the thin paper has anti-slip property by the foaming ink of non-slip type. The thin paper is used in a tissue paper, toilet paper, kitchen paper, wiper, paper napkin, and luncheon mat.

Description

Leaf paper for home {TISSUE PAPER FOR DOMESTIC USE}

The present invention relates to household thin paper.

Household paper sheets such as kitchen paper, tissue paper, toilet paper, and paper napkins have crepe and have softness, flexibility, and excellent liquid absorption compared to cardboard, and thus wipe off moisture, oil, dirt, dust, etc. In addition to the advantages of being inexpensive and disposable, mainly for the purpose of use, for example, in order to wrap them in order to prevent damage of goods or foods, and to place tableware as a lunch mat or coaster. It may be used for the purpose of absorbing excess oil, etc. of frying, and also a part of disposable absorbent articles, such as a paper diaper and a sanitary napkin.

In this way, household thin paper is excellent in its versatility, and its usage is very diverse for consumers.

However, in the case of excellent versatility, in order to wrap such articles for preventing damage to the above-mentioned articles or foods, the cushioning properties are inferior compared to those of a dedicated wrapping paper, so that several sheets are required to be used. In the use of a tableware such as a lunch mat or a coaster, there are many insufficient points in each application, such as sufficient cushioning property, non-slip resistance, and no designability when placing the tableware.

The point which cannot be said enough in these various uses is large by the small volume resulting from the low basis weight of thin paper itself, and the characteristic that paper thickness is thin.

In household thin paper, the technique of embossing is known as a technique of improving bulkiness and designability, but the improvement of bulkiness by the embossing which is bound to paper thickness and ground color of thin paper itself, and the designability are improved. There is a limit.

 Then, the present inventors paid attention to the mechanism of the foaming ink shown to following patent documents 1-5 in order to improve the bulky property and designability which are the said problems, taking advantage of the thin paper.

Japanese Patent Laid-Open No. 5-237974 Japanese Patent Laid-Open No. 5-16288 Japanese Unexamined Patent Publication No. 10-180945 Japanese Unexamined Patent Publication No. 10-157022 Japanese Patent Publication No. 2005-516816 Japanese Patent Publication No. 2000-25136

Therefore, the main subject of this invention is to improve bulky property and designability which cannot be achieved by embossing technology, while making use of the characteristics of household thin paper which is excellent in softness, flexibility, and liquid absorption, and is inexpensive. have.

The present invention and the effects of solving the above problems are as follows.

<Invention of Claim 1>

 It has a bulky part by foaming ink in at least one surface among the thin paper of 10-60 g / m <2> of basic weights and 80-350 micrometers of paper thickness, The height of this bulky part is 50-200 micrometers, and the said bulky part is seen in plan view. The total leaf area of the time is 5 to 20% of the area of one side of the leaf paper.

<Invention of Claim 2>

The household leaf paper according to claim 1, wherein the leaf paper does not have an emboss.

<Invention of Claim 3>

The household foil paper according to claim 1 or 2, wherein printing on the both sides of the foil paper is carried out by foaming ink, and one side is a bulky part having anti-slip property by the non-slip type foaming ink.

<Invention of Claim 4>

The household leaf paper according to any one of claims 1 to 3, wherein the drape property (softness / thickness) is 0.04 to 0.1 m 2 / µm.

<Invention of Claim 5>

 The said thin-key part is household thin paper of any one of Claims 1-4 which are different from the ground color of thin paper.

<Invention of Claim 6>

The household foil paper according to any one of claims 1 to 5, which has a band shape and is provided with a cutting line for cutting along the width direction at predetermined intervals in the longitudinal direction.

According to the present invention described above, there is provided a household foil paper having bulkyness and designability, which exhibits the softness, flexibility and liquid absorption property, and exhibits the characteristics of household foil paper which is inexpensive, and which cannot be achieved only by embossing technology.

1 is a perspective view for explaining the household foil paper of the present invention.
Figure 2 is another perspective view for explaining the household foil paper of the present invention.
3 is a cross-sectional view for explaining the household foil paper of the present invention.
4 is another cross-sectional view for explaining the household foil paper of the present invention.
Fig. 5 is a perspective view of a roll form of household foil paper of the present invention.

Carrying out the invention  Form for

Next, embodiment of this invention is described in detail below, referring FIGS. 1-5.

『House Leaf Leaf Paper』

In this invention, at least one surface of the thin paper 1 used as a base material is printed by foaming ink, the bulky part 2 is formed, and the overall bulky property of the household thin paper X1 is expressed.

This household foil X1 can be used as a base paper of various household foil paper products, for example, a tissue paper, a toilet paper, a kitchen paper, a wipe, a paper napkin by design of the foil paper 1 mentioned later, etc. And lunch mats.

However, foamed ink is inferior in water solubility compared to thin paper itself, and has irregularities on the surface, and therefore has a great influence on the touch, so it is suitable for applications such as toilet paper and tissue paper. It is suitable for products as wipes, kitchen papers, paper napkins, etc., mainly used for wiping off dirts, etc. other than skin, such as articles, rather than using it as a product to be used.

In particular, it is convenient in the aspect of use around a kitchen, and is suitable for making it as a kitchen paper and a disposable lunch mat. Of course, you may use it as a new household thin paper product other than kitchen paper and disposable lunch mat.

On the other hand, it is preferable that the total area at the time of viewing this bulky part 2 in plan view is 5 to 20% of the one-side area of the thin paper 1. Since the part related to the bulky part 2 reduces the liquid absorptivity and flexibility of the thin paper 1 itself, if it exceeds 20%, the advantage of the thin paper 1 is not sufficiently exhibited in terms of liquid absorption and flexibility. do. On the other hand, when the bulky portion 2 is less than 5%, problems such as shaking of the placed article are likely to occur due to unevenness of the ground, for example, when used for rugs.

Here, the printing pattern by the foaming ink, that is, the arrangement pattern of the bulky part 2 is not particularly limited, but, for example, suitable unit shapes such as circles, dots, double circles, triangles, squares, etc. are dotted. The pattern arrange | positioned as the pattern, the straight line, the broken line, etc., the pattern arrange | positioned in parallel or a grid | lattice form, the arbitrary lines, the pattern arrange | positioned so that a pattern may be drawn by a straight line, a broken line, a curve, etc. are mentioned.

Here, as an arrangement pattern of the bulky part 2, as shown in FIG. 1, if it is a pattern which scatters dot bulky parts 2, such as a rectangle, scatteringly, the area of one bulky part 2 will be 1.0. It is preferable that it is -4.0 mm <2>, and in this case, it is preferable that the distance L1 between the adjacent bulky parts 2 is 1.0-5.0 mm. In addition, the distance L1 between these adjacent bulky parts 2 means the closest distance between the adjacent bulky parts. If it is the said range, the bulky part 2 will be spread | dispersed moderately, and will have the outstanding design property, and, when using for rug, does not produce a problem, such as a shake of the mounted article. Moreover, the softness | flexibility, liquid absorption, etc. of the thin paper 1 are fully exhibited.

Moreover, as the arrangement pattern of the bulky part 2, like the lattice shape shown in FIG. 2, the bulky part 2 is arrange | positioned linearly, and the partition enclosed by the bulky part 2 arrange | positioned in the linear form is plurality, If it is set as the arrangement pattern which it has, it is preferable that line width L2 is 0.25-2.00 mm, and the area of the one partition P to be enclosed is 25-100 mm <2>. If it is the said range, the bulky part 2 will be spread | dispersed moderately, and will have the outstanding design property, and, when using for rug, does not produce a problem, such as a shake of the mounted article. Moreover, the softness | flexibility, liquid absorption, etc. of the thin paper 1 are fully exhibited.

On the other hand, in particular, as can be seen from FIG. 3, in the household foil paper X1 of the present invention, the height L3 of the bulky part 2 by the foaming ink is preferably 50 to 200 μm. The height L3 of the bulky part 2 is the height from the thin leaf surface used as a base material to the apex of the convex part which is a printing part of foaming ink. In addition, since the height of the foam printing part by foaming ink is not fixed, the height of the bulky part 2 shall be made into the average value of 5 points | pieces.

When the height of the bulky part 2 exceeds 200 µm, the height difference with the ground of the thin paper 1 becomes severe, and it gives a tight feeling, and the flexibility of the thin paper 1 becomes difficult to be expressed, and There is a high risk of elimination. In addition, for example, when used as a rug, the stability of what is placed is lost. Moreover, compared with the bulky property obtained when it is less than 50 micrometers, the cost of using foaming ink becomes high.

On the other hand, it is preferable that the household foil paper (X1) of this invention is 0.04-0.1 m <2> / micrometer of drape property (softness / thickness). If drape property is the said range, it will be elastic and it will become the specification which swelled smoothly. The balance of thickness and softness is very excellent. Here, the measurement of the softness shall be measured with clearance of 20 mm according to JAPAN TAPPI No.34.

On the other hand, although the bulky part 2 of this invention is a convex part formed with foaming ink, compared with the convex part by embossing, the shape is a convex part which rises rapidly from the ground, and achieves by embossing It has designability that cannot be done. Moreover, by making the bulky part of this invention into a color different from the background color of a thin leaf paper, the designability by color is added in addition to the designability by the unevenness | corrugation, and it has what it has unprecedented excellent designability.

On the other hand, in the household foil paper X1 of this invention, when printing with foaming ink on both surfaces of the foil paper 1, as shown in FIG. 4, one side is a non-slip type foaming ink. It can be printed and it can be set as the bulky part 3 which has anti-slip property. In this case, since it is suitable for use as a rug, for example, the design of the thin paper 1 is adapted to the kitchen paper used around the kitchen, and the usability as a lunch mat, coaster, etc. improves. .

In addition to having anti-slip property with respect to the bulky part 3, for example, the arrangement pattern, the area ratio, and the like do not change from the usual bulky part 2.

『Park Leaf Paper』

The leaf paper 1 used as a base material of this invention has crepe, and 10-60 g / m <2> of basis weights shall be 80-350 micrometers in thickness. Within this range, it can be designed to be suitable for each of kitchen paper, tissue paper, toilet paper, wipe, paper napkin, and other household thin paper products.

For example, if it is kitchen paper or a wipe, if it is basis weight 20-50 g / m <2>, thickness 108-270 micrometers, if it is a paper napkin, if it is 20-40 g / m <2>, thickness 120-216 micrometer, and tissue paper, basis weight 10-15 If it is g / m <2>, thickness 100-250 micrometers and a toilet paper, it is basis weight 15-40 g / m <2> and thickness 100-250 micrometers.

In addition, the number of plies of the foil paper 1 is not limited, It can be set as an appropriate ply number. However, Preferably it is 1-3 plies. Moreover, when it is set as a fly structure, the said basis weight and thickness are basis weight and thickness in the state which set it as a fly structure.

In addition, basis weight in this invention and specification mean the value measured based on JISP8113.

In addition, as a measuring method of the thickness L1 of the thin paper 1, it shall measure using the dial visibility gauge (thickness gauge) "PEACOCK G type" (made by Ozaki Corporation) on the conditions of JIS P 8111. Specifically, after confirming that there is no dust, dust, etc. between the plunger and the measuring table, the plunger is placed on the measuring table, the memory of the dial visibility gauge is moved to set the zero point, and then the plunger is raised to place the sample on the test table. Place it on the top, and slowly lower the plunger to read the gauge at that time. At this time, the plunger is simply placed. In addition, thickness is taken as the average value obtained by measuring 10 times. Of course, the part which is not related to the bulky parts 2 and 3 is measured.

On the other hand, the thin paper 1 may be any crepe paper among dry crepe paper and wet crepe paper. Dry crepe paper has a lot of wrinkles, so it has excellent buffering properties and is soft and stretched.Wet crepe paper has less wrinkles and has a thicker paper compared to general paper of the same weight. There is this.

Moreover, what is excellent in kitchen paper is a wet crepe paper, Comprising totally the thing which is suitable for use in kitchen peripheries, such as kitchen paper and a lunch mat, as a use aspect of the household foil paper (X1) of this invention mentioned above, It is preferable that the thin paper 1 of this invention is wet crepe paper.

Here, the well-known thing can be used for the raw material pulp of the thin paper 1 which concerns on this invention. In particular, it is preferable that the raw material pulp mix | blended NBKP and LBKP. The old paper pulp may be suitably blended, but in terms of texture, it is preferable that only the NBKP and LBKP are composed. In that case, the blending is preferably NBKP: LBKP = 10: 90-50: 50, in particular NBKP. : LBKP = 40: 60 is preferable.

In addition, although the thin paper 1 may be embossed, when embossing, foaming ink will fall easily, and it will be difficult to print foaming ink, and manufacturing will become complicated, (1) It is preferable that embossing is not performed.

<Foaming ink>

As the foaming ink for forming the bulky portions 2 and 3, those which are already known can be used, but a preferable example is one containing a foamable curable material in a binder. As a binder, an already well-known adhesive base material can be used, As a specific example, an acrylic resin, a vinyl acetate type resin, a vinyl acetate-ethylene copolymer resin, a urethane type resin, a vinyl chloride type resin etc. are mentioned.

The foamable curable material may specifically exemplify a microcapsule in which a core material having a property of expanding by heat is contained in a film or an outer shell of a thermoplastic polymer material. The particle diameter of a microcapsule etc. can be suitably selected according to the foamability of a microcapsule, the printing press used, etc., Although it does not specifically limit, Usually, it is a particle diameter of 10-50 micrometers.

The foamed curable material of this kind is maintained in an expanded state by expanding the core material or expanding the coating or the outer skin when the appropriate temperature is reached. In addition, hardening in this invention is the meaning containing the elasticity, rigidity, and rigid elasticity state.

Specific examples of the thermoplastic polymer material for forming the microcapsule coating or the shell include acrylic resins such as methyl methacrylate and acrylonitrile, vinylidene chloride, polyamide, polybutadiene, urethane resin, styrene resin, and the like. Selected thermoplastic polymer materials, or thermoplastic polymer materials obtained by mixing them; and specific examples of the core material having the property of being expanded and cured by heat include hydrocarbon-based compounds such as butane and isobutane, and other organic compounds. Organic substances and inorganic substances which generate | occur | produce decomposition gas, such as carbon dioxide gas, such as a solvent, sodium bicarbonate, sodium carbonate, ammonium carbonate, an azide compound, and a hydrazide compound, and nitrogen gas, are mentioned.

In addition, the mixing | blending of a foamable hardening material can be adjusted suitably considering the foamability of a foamable hardening material, and the adhesiveness of a binder. Generally it is 3-20 weight part with respect to 20-60 weight part of adhesive base materials.

In addition, the foaming ink can contain a chemical agent necessary for production, such as a thickener, an antifoaming agent, a solvent, and the like necessary for forming the bulky portion.

If more specific foamable cured material is exemplified, Expancel series manufactured by Expancel can be exemplified.

Moreover, when forming the bulky part 3 which has anti-slip property, at least foaming ink containing the foamable cured material which shows the viscosity of a microcapsule and a film after foaming is selected, or in addition to a binder and a foamable cured material, Achieved by a foaming ink containing an anti-slip component such as a diene rubber (for example, styrene-butadiene rubber, polyisoprene rubber, chloroprene rubber, etc.), an olefin rubber (ethylene propylene rubber, butyl rubber), acrylic rubber, silicone rubber, or the like. can do.

On the other hand, in order to form a bulky part different from the background color of the thin paper 1, already known dyes and pigments can be blended.

<Production method example>

 The home thin paper (X1) of the present invention uses a known printing method for the thin paper (1) such as gravure printing, flexographic printing, screen printing, etc., with respect to the dried thin paper (1). After performing appropriate pattern printing using, the thin paper 1 to which this foaming ink was printed can be manufactured by heating with a dryer etc., and foaming the foaming ink by heat.

Although the temperature of a drier can be suitably determined according to the foaming temperature of the foaming ink to be used, when performing online from the evaporation of a thin paper, it is preferable in manufacturing that it is 90-130 degreeC.

When performing online, it is the temperature at the time of drying with a dryer etc. after printing foaming ink with a printer (printer).

<Roll form>

On the other hand, the household thin paper (X1) of the present invention is a kitchen roll or a disposable luncheon mat roll, which has a strip shape, arranges a perforation line for cutting along the width direction at predetermined intervals in the longitudinal direction, and further makes it a roll shape. Suitable for Hereinafter, this form is demonstrated, referring FIG. 5 especially (in addition, a bulky part is abbreviate | omitted in FIG. 5). However, the household foil paper X1 which concerns on this invention is not limited to such a roll form.

This roll form is of interest in which the household foil paper (hereinafter, also referred to simply as sheet 12) in the above-described strip-shaped description is made of a paper tube or the like having substantially the same width as this. ) Rolled up to (5). The said interest (5) can use the well-known thing used for this kind of kitchen paper etc. When a general example is shown, the outer diameter (winding diameter) L4 is 30-50 mm, and width H is about 100-250 mm.

In this embodiment, the winding length of the sheet 12 is about 8-15 m, and when the said interest (5) is used, the outer diameter of household foil paper X1 is 70-130 mm. If it is this range, it is good to use.

On the other hand, as shown in FIG. 5, it is preferable that the sheet | seat 12 of this form forms the cutout line 6 over the sheet width direction for every predetermined space | interval L5 of a sheet longitudinal direction. By the space | interval of this perforation lines 6 and 6, the sheet | seat 12 becomes easy to cut | disconnect. The predetermined interval L5 is preferably about 48 to 350 mm. If it is less than 48 mm, it becomes too small to actually use, and when it exceeds 350 mm, it becomes large compared with tableware etc., and a feeling of use worsens.

The cutting line 6 can be formed by a well-known perforation roll (cutting blade roll) facility. That is, in the front end wound up to the interest 5, many blades are arrange | positioned along the width direction on the roll which is wider than the width | variety of the sheet | seat 12, and a blade is formed, and this blade row is predetermined space | interval. By contacting the traveling sheet 12 while rotating the perforated roll formed in the circumferential direction of the roll in the same pitch as L5, the perforation line 6 over the width direction of the sheet 12 is spaced a predetermined distance in the longitudinal direction. It can form every L5.

The cutout may be formed at any point after foaming after foaming ink printing to form a bulky part when the lamination paper before foaming ink printing and the unfoamed state after foaming ink printing are formed. Preferably, since a perforation line also enters into the bulky parts 2 and 3, it is after forming the bulky parts 2 and 3.

In addition, it is preferable that the cut line 6 is more than a double line in the household thin paper X1 of this form like an example of illustration. What is necessary is just to form by the perforation roll installation provided with the perforation roll of several layers of suitable cutting in forming a plural cut line. In addition, the perforation line 6 in this case does not need to be formed in double over the whole sheet width direction, For example, only the width direction side part of the sheet 12 may be formed in double.

In the case where the cutout line 12 is doubled, for example, Japanese Laid-Open Patent Publication No. 2003-276936 and the like refer to, for example, the cut portion in a zigzag shape, or the end of the cut portion of one cutout line. ) And the angle formed by the perforated line with respect to the straight line connecting the end of the cut part of the other perforated line closest to the end of the cut part may be at right angles or acute angles to facilitate cutting.

Here, the household foil paper X1 of this form, Preferably, the tensile strength of the sheet longitudinal direction in the cut line 6 is 100-500 cN. In particular, if it is a toilet roll, 300-400 cN is suitable as it is 100-200 cN, kitchen paper, and lunch mat. When the tensile strength in the sheet longitudinal direction in the cutout line 6 is 100 cN or more, undesired division in the cutout line 6 at the time of unwinding the sheet is reliably prevented. On the other hand, when the tensile strength in the sheet longitudinal direction in the cut line 6 is 500 cN or less, the sheet 12 can be cut reliably and easily in the cut line 6 to be cut.

"Tensile strength" means the dry tensile strength measured based on the tensile property test method prescribed | regulated to JIS P 8113 here. The sheet 12 itself, that is, not the tensile strength of the sheet 12 without the perforated line 6, but means the tensile strength measured over the perforated line 6 for the sheet 12 having the perforated line 6. do.

The adjustment of the tensile strength in the longitudinal direction in this cutout line 6 is made by adjusting the tie length which is the connection part in the cutout line 6 and the cut length which is the same division part, or the tie cut ratio which is the ratio of this tie length and cut length. This can be carried out by adjusting. More specifically, it can adjust by replacing with the perforation roll provided with the blade of desired tie cut length and tie cut ratio. In addition, adjustment of this tensile strength is adjustment of the pressure linear pressure (pressure force with respect to the sheet | seat 12 per sheet width | variety (kgf / cm)) with respect to the sheet 12 of a perforated roll, and a winder speed (sheet 12). Can also be adjusted by adjusting the winding speed.

On the other hand, in the household thin paper (X1) of the present embodiment, the ratio of the tensile strength in the sheet length direction in the cutout line 6 to the tensile strength in the sheet length direction of the sheet 12 itself is 1.0 to 50% (preferably Preferably from 2.0 to 10%). If the ratio of the tensile strength is 50% or less, since the tensile strength of the sheet portion without the perforated line 6 becomes relatively high, when the sheet 12 is cut, the sheet 12 is removed from the sheet portion other than the perforated line 6. Segmentation is suppressed and it can cut | disconnect reliably by the cutting line 6. On the other hand, when the ratio of the tensile strength is 1.0% or more, the tensile strength of the cutout line 6 becomes relatively high, so that even when the cutout line 6 is increased by shortening the interval of the cutout line 6, Undesired division at the cutting line 6 can be reliably prevented.

Here, the tensile strength of the longitudinal direction of the sheet 12 itself is also measured based on the tensile characteristic test method prescribed | regulated to JISP 8113 mentioned above. It is of course the tensile strength at the time of drying of the sheet | seat part without the cutout line 6.

In addition, in order to set the tensile strength in the sheet longitudinal direction of the cutout line 6 to 100 to 500 cN, and to set the ratio of the tensile strength to 1.0 to 50%, the tie length of the cutout line 6 is 0.9 to 2.5 mm, The cut length is 0.9 to 37.5 mm, and the tie cut ratio (tie: cut) may be set to 1:15 to 1: 1.

X1…. Household foil
One … Leaf paper
2 … Bulky part (foamed ink printing part)
5 ... Attention
6 ... Perforation
12 ... Sheet
L1... Distance between bulkies
L2... Line width
L3... Height of the bulky part
L4... Outer diameter (roll diameter)
L5. Perforation interval

Claims (6)

It has a bulky part by foaming ink in at least one surface among the thin paper of 10-60 g / m <2> of basic weights and 80-350 micrometers of paper thickness, The height of this bulky part is 50-200 micrometers, and the said bulky part is seen in plan view. The total leaf area of the time is 5 to 20% of the area of one side of the leaf paper. The method of claim 1,
The said leaf paper is household foil which does not have an emboss. The method according to claim 1 or 2,
A household foil paper, in which both sides of the foil paper are printed with foamed ink, and one side is a bulky part having anti-slip property by the non-slip type foamed ink. The method according to any one of claims 1 to 3,
Household leaf paper with drape property (softness / thickness) of 0.04 to 0.1 m 2 / µm. The method according to any one of claims 1 to 4,
The said bulky part is an index household leaf paper different from the ground color of a leaf paper. 6. The method according to any one of claims 1 to 5,
A thin paper sheet for household use, having a stripe shape and having a perforation line for cutting in the width direction at predetermined intervals in the longitudinal direction.

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