KR101211274B1 - Domestic sanitary tissue - Google Patents

Abstract

[assignment]

Household hygiene foil paper which has flexibility and maintains the water absorption of the grade which can function as a sanitary foil paper, and reduced the bleeding phenomenon of water uniformly is obtained.

[Workaround]

A quaternary ammonium salt having an alkyl group and / or alkenyl group as the water repellent contains from 0.02 to 0.5% by weight of the solid weight to the pulp of the pulp slurry, or the sizing agent to the dry weight of the pulp of the pulp slurry. The water repellent or size agent is mixed in the pulp slurry at the time of papermaking, while containing 0.02 to 0.06% by weight of solids. And the absorption rate of water is 3.5 ~ 35 seconds, water permeation permeability of less than 6 sheets of household sanitary foil is obtained. As a water repellent agent of the quaternary ammonium salt which has the said alkyl group and / or alkenyl group, it is preferable at the point which can provide flexibility, for example using dimethyl monoalkyl ammonium halide and trimethyl monoalkyl ammonium halide.

Sanitary foil, Tissue paper, Flexibility, Water absorbent, Water repellent, Size agent

Description

Domestic sanitary foil {Domestic sanitary tissue}

The present invention relates to household hygiene foil paper which has flexibility in household hygiene foil paper and reduces the phenomenon of water leakage while maintaining the absorbency to the extent that it can function as a hygiene foil paper.

Background Art [0002] Tissue papers and the like have been conventionally provided on the market as household hygiene foil paper. This type of sanitary foil is not only used for blowing noses, for example, to wipe off dirt during defecation or for removing makeup in case of a cold, but also in a considerable proportion. It is also used to wipe off.

However, household sanitary foils, which have been used so far, are manufactured with an emphasis on improving the feel and the water absorbency, so that the absorbed water often bleeds out, which is attached to the hand and the strength is weak. Therefore, even if a little moisture is absorbed, the sheet is often torn, giving the user a feeling of discomfort. In this case, although the strength of the sheet has been improved by increasing the basis weight or by laminating, etc., this method is not preferable because it not only incurs unnecessary costs but also impairs the flexibility of the sheet, resulting in deterioration of the usability.

In view of the above problems, a technique has been proposed in which a water repellent is added to reduce bleeding without incurring costs. For example, in Patent Document 1, a first cellulose ply and a second cellulose ply are included, and a water repellent (size agent, hydrophobic chemical) is printed or sprayed on a surface portion of each of the cellulose plies facing each other. There is proposed a toilet tissue or a toilet tissue having a water repellent layer interposed between the cellulose plies.

Patent Document 1: Japanese Patent Publication No. 2002-519533

DISCLOSURE OF INVENTION

Problems to be solved by the invention

However, in the tissue tissue product described in Patent Document 1, since the layer made of a water repellent agent is formed as an intermediate layer, the product tends to stick because the water repellent layer has the same water absorption as conventional tissues until water reaches the water repellent layer. Had a problem. In addition, when water penetrates beyond the water repellent layer, it is impossible to prevent bleeding at all, and when a large amount of the sizing agent is added, the water absorbency may be impaired, thereby preventing the product from performing its original function.

Therefore, the main subject of this invention is providing the domestic sanitary foil which has flexibility, and reduced the bleeding phenomenon of water uniformly, maintaining the water absorption of the grade which can function as a sanitary foil.

Means for solving the problem

In order to solve the above problems, as the present invention of claim 1, as a water repellent, dimethyl dilauryl ammonium chloride, dimethyl dioleyl ammonium chloride, trimethyl monooleyl ammonium chloride, trimethyl monostearyl ammonium chloride, polyalkyleneoxy monomethyl monooleyl Ammonium chloride, polyalkyleneoxymonomethyldioleylammonium chloride alone or a combination of two or more of 0.1 to 0.2% by weight solids weight relative to the dry weight to the pulp of the pulp slurry, while the water repellent is pulp at papermaking A household hygiene thin paper mixed in a slurry,
The household hygiene thin paper is a toilet tissue paper,
The basis weight of the paper is 10 to 35 g / m 2, paper thickness is 80 to 200 μm, dry tensile strength based on JIS P 8113 (vertical direction) is 200 to 400 cN / 15 mm, (horizontal direction) is 60 to 200 cN / 15 mm ,
The water decomposability based on JIS P 4501 is 25-30 seconds,
Hygiene thin paper for home use, characterized in that the absorption rate is 3.5 ~ 35.0 seconds and the water permeability is 3 ~ 6 sheets.
Here, the said water absorption rate is the value obtained via the process of following (1)-(5), and the said water penetration permeability through the process of following (6)-(8), respectively.
(Absorption speed)
(1) Prepare distilled water, digital micro pipette, stopwatch and tripod.
(2) Make two sets of specimens (test pieces) and place them on a support with a hole with a diameter of 40 mm or more in the center.
(3) 5 µl of distilled water was added dropwise to the test piece with a digital micropipette at a height of about 10 mm.
(4) Measure the time from the moment when distilled water contacts the test piece until water is completely absorbed and the reflection of the paper surface disappears (in 0.01 seconds).
(5) This test is carried out five times and the absorption rate (seconds) is taken to the first decimal place of the average value.
(Water penetration)
(6) Ten sheets are stacked and 1.3 ml of water is added dropwise.
(7) Visually confirm that all of the moisture has penetrated.
(8) The number of penetrations of water shall be water permeability (sheet).

In the present invention described in claim 1, dimethyldilaurylammonium chloride, dimethyldioleylammonium chloride, trimethylmonoleylammonium chloride, trimethylmonostearylammonium chloride, polyalkyleneoxy, having a softening effect as a water repellent agent for household sanitary foils Since the monomethyl monooleyl ammonium chloride and the polyalkylene oxy monomethyl dioleyl ammonium chloride alone or a combination of two or more of them contained 0.1 to 0.2% by weight of the solids weight relative to the dry weight of the pulp of the pulp slurry, it is flexible. Therefore, it becomes possible to reduce the bleeding phenomenon of water without impairing the water absorbency to the extent that it can function as a sanitary foil. In addition, since the water-repellent agent is to be mixed in the pulp slurry during papermaking, the water-repellent agent is uniformly dispersed in the paper fibers, so that the phenomenon of bleeding uniformly when the water is wiped off can be reduced. In addition, in the present invention, since the basis weight, paper thickness, dry paper strength, water decomposability, water absorption speed, and water permeability are defined in a predetermined range, there is no feeling of stiffness, and the required flexibility is ensured while using moderate flexibility.

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Regarding the "absorption rate" and "water penetration" in the present invention, the smaller the numerical value, the higher the absorbency, and the larger the numerical value, the higher the permeability. In addition, it is preferable that said "absorption rate" and "water penetration" satisfy both conditions simultaneously.

The present invention according to claim 2, wherein the alkylketene dimer is contained as a sizing agent in an amount of 0.02 to 0.04% by weight, based on the dry weight of the pulp slurry, and at the same time, the sizing agent is mixed in the pulp slurry at the time of papermaking. As a thin paper,
The household hygiene thin paper is a toilet tissue paper,
The basis weight of the paper is 10 to 35 g / m 2, paper thickness is 80 to 200 μm, dry tensile strength based on JIS P 8113 (vertical direction) is 200 to 400 cN / 15 mm, (horizontal direction) is 60 to 200 cN / 15 mm ,
The water decomposability based on JIS P 4501 is 25-30 seconds,
Hygiene thin paper for home use, characterized in that the absorption rate is 3.5 ~ 35.0 seconds and the water permeability is 3 ~ 6 sheets.
Here, the said water absorption rate is the value obtained via the process of following (1)-(5), and the said water penetration permeability through the process of following (6)-(8), respectively.
(Absorption speed)
(1) Prepare distilled water, digital micro pipette, stopwatch and tripod.
(2) Make two sets of specimens (test pieces) and place them on a support with a hole with a diameter of 40 mm or more in the center.
(3) 5 µl of distilled water was added dropwise to the test piece with a digital micropipette at a height of about 10 mm.
(4) Measure the time from the moment when distilled water contacts the test piece until water is completely absorbed and the reflection of the paper surface disappears (in 0.01 seconds).
(5) This test is carried out five times and the water absorption rate (seconds) is taken to the first decimal place of the average value.
(Water penetration)
(6) Ten sheets are stacked and 1.3 ml of water is added dropwise.
(7) Visually confirm that all of the moisture has penetrated.
(8) The number of penetrations of water shall be water permeability (sheet).

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In the present invention described in claim 2, since the household sanitary foil paper contains an alkyl ketene dimer as a sizing agent in a solid content weight of 0.02 to 0.04% by weight relative to the dry weight of the pulp of the pulp slurry, the hygiene foil paper has flexibility. It is possible to reduce the bleeding phenomenon of water without impairing the water absorbency to the extent that it can function. In addition, since the size agent is mixed in the pulp slurry at the time of papermaking, the size agent is uniformly dispersed in the paper fibers, so that the phenomenon of bleeding out constantly when the moisture is wiped off can be reduced. In addition, in the present invention, since the basis weight, paper thickness, dry paper strength, water decomposability, water absorption speed, and water permeability are defined in a predetermined range, there is no feeling of stiffness, and the required flexibility is ensured while using moderate flexibility.

Effects of the Invention

As described in detail above, according to the present invention, it becomes possible to reduce the phenomenon of moisture bleeding constantly while maintaining the water absorbency to the extent of having flexibility and functioning as a sanitary foil.

Carrying out the invention  Best form for

Hereinafter, the present invention will be described in detail.

[Example 1]

The household sanitary foil of the present invention contains a quaternary ammonium salt having an alkyl group and / or alkenyl group as a water repellent in a predetermined ratio, and the water repellent is prepared by mixing in a pulp slurry during papermaking. For example, the water repellent may be uniformly dispersed throughout the paper by mixing the water repellent agent in a pulp slurry in which broadleaf kraft pulp (LBKP) and coniferous kraft pulp (NBKP) are mixed.

As the water repellent, as described above, a quaternary ammonium salt having an alkyl group and / or an alkenyl group is used. As the quaternary ammonium salt, halides are easily combined with each other and are preferred. Alkyl ammonium halides may be used alone or in combination. Of these halides, chloride is preferred since it is the most common one. Specifically, dimethyl dilauryl ammonium chloride, trimethyl monolauryl ammonium chloride, dimethyl disetyl ammonium chloride, trimethyl monocetyl ammonium chloride, dimethyl dipalmityl ammonium chloride, trimethyl monopalmityl ammonium chloride, dimethyl distearyl ammonium chloride , Trimethylmonostearylammonium chloride, dimethyldioleylammonium chloride, trimethylmonooleylammonium chloride, dimethyldibehenylammonium chloride, trimethylmonobehenylammonium chloride, polyalkyleneoxymonomethylmonoleylammonium chloride, polyalkyleneoxy Monomethyldioleylammonium chloride alone or in combination of two or more.

In particular, among the compounds mentioned above, dimethyldilaurylammonium chloride, dimethyldioleyl ammonium chloride, trimethyl monooleyl ammonium chloride, trimethyl monostearyl ammonium chloride, polyalkyleneoxy monomethyl monooleyl ammonium chloride, polyalkyleneoxy Single or a combination of two or more of monomethyldioleylammonium chloride is preferred because it has the highest softening effect.

The absorption rate of the household sanitary foil is preferably 3.5 to 35 seconds, preferably 5.5 to 35 seconds. In this "absorption rate" test, a digital micropipette, a stopwatch, and a tripod are used as a measuring instrument. Two samples are stacked in one set, and a distilled water is placed in the digital micropipette. 5 micrometers, and it dripped at the test piece at the height of about 10 mm, and measures the time from the moment the water droplet contacted the test piece until the water is completely absorbed and the reflection of the paper surface disappears in 0.01 second unit. It is a test and a test is carried out 5 times and it is set as the numerical value obtained by the test method which records the average value to one decimal place.

When this water absorption rate is less than 3.5 seconds, the effect of reducing the bleeding phenomenon aimed at by the present invention cannot be obtained. On the contrary, if the absorption rate exceeds 35 seconds, the water repellency is so strong that there is a risk of damaging the natural function of the sanitary foil paper.

In addition, the household hygiene foil paper has a water permeability of 6 sheets or less, preferably 3 to 6 sheets. This "water penetration" test is a numerical value obtained by counting the number of penetration sheets when 10 sheets of sheets are stacked and 1.3 ml of water is added dropwise to confirm visually that the entire amount of water is penetrated. When the water impregnation permeability exceeds 6 sheets, the effect of reducing the bleeding phenomenon aimed at by the present invention cannot be obtained. In particular, when the water impregnation permeability is in the range of 3 to 6 sheets, the water absorption performance and the prevention effect of the bleeding phenomenon are balanced and the usability is improved.

In order to satisfy the water absorption rate and water permeability, the water repellent agent is 0.02 to 0.5% by weight, preferably 0.05 to 0.25% by weight, more preferably 0.1 to 0.2, based on the weight of the solid with respect to the dry weight of the pulp slurry. It is contained in the ratio of weight%. When the said water repellent content rate is less than 0.02 weight%, the water repellency effect aimed at by this invention will not be acquired. On the other hand, when the content of the water repellent exceeds 0.5% by weight, the water repellency may be so strong that the water cannot be sucked, and the manufacturing cost increases, which is not preferable. In particular, if the water repellent content is in the range of 0.1 to 0.2% by weight, water repellency, water absorption, and cost are all balanced.

On the other hand, the household foil paper is basically used as a tissue paper, a toilet tissue paper, but may include a kitchen towel, etc., if the foil paper is a tissue paper, a toilet tissue paper, the basis weight is 10 ~ 35 g / ㎡ Paper thickness of 80-200 μm, dry tensile strength based on JIS P 8113 (vertical direction) 200-400 cN / 15 mm, (horizontal) 60-200 cN / 15 mm, respectively desirable. If it is in each of these numerical ranges, it will not feel hard, it will have moderate flexibility, and the strength required at the time of use will be ensured.

[Example 2]

In the first embodiment, a quaternary ammonium salt having an alkyl group and / or an alkenyl group was used as the water repellent, but it is also possible to use a size agent. As the type of the sizing agent, neutral sizing agents such as alkylketene dimers, alkenyl anhydrous bakic acid, stearic anhydride, acidic sizing agents such as saponified natural rosin, reinforced rosin and the like can be used.

The sizing agent contains a small amount of 0.02 to 0.06% by weight, based on the weight of the solid, of the pulp slurry to the dry weight of the pulp, so that the absorption rate is 3.5 to 35.0 seconds, and / or the water permeability is 6 sheets or less. You can do If the addition rate is less than 0.02% by weight, the bleeding phenomenon of moisture cannot be sufficiently reduced. If it exceeds 0.06% by weight, the water repellency becomes too strong. In particular, since the water repellency rapidly increases when the size agent is contained in an amount of 0.05% by weight or more, the addition rate of the size agent is preferably set to 0.02 to 0.04% by weight.

[Other Forms]

(1) In the case where the use of the sanitary foil paper is a toilet tissue paper, it is preferable that the water decomposability based on JIS P 4501 is 20 to 40 seconds, more preferably 25 to 30 seconds. If the water solubility is less than 20 seconds, the strength characteristics may not be secured. If the water solubility is longer than 40 seconds, it may cause clogging in the bathroom.

0.1 wt% of dimethyl monoalkylammonium halide as solid water content (Example 1), 0.2 wt% containing (Example 2) as water repellent, 0.02 wt% of alkylketene dimer as solid weight (Example 3), 0.04% by weight (Example 4), 0.06% by weight (Example 5), 0.005% by weight (Comparative Example 1), 0.01% by weight (Comparative Example 2) The basis weight, the water absorption rate, and the water permeability were measured for each of the specimens containing no water repellent and no size agent (Comparative Example 3). The results are shown in Table 1.

In addition, sanitary foil paper pulp slurry blended in the ratio of broad-leaved kraft pulp (LBKP): coniferous kraft pulp (NBKP) = 9: 1 using papermaking water of pH 8.0, 120 seconds at 80 ℃ temperature conditions It is dried.

Water repellent or sizing Addition amount
(%) Basis weight
(g / m 2) Absorption speed
(second) Immersion Permeability
(every) Example 1 Dimethyl monoalkylammonium halide 0.1 28.7 5.9 (○) 4 (○) Example 2 " 0.2 28.1 33.1 (○) 3 (O) Example 3 Alkylketene dimer 0.02 29.6 3.6 (○) 6 (O) Example 4 " 0.04 29.4 6.5 (○) 4 (○) Example 5 " 0.06 29.2 30.5 (○) 3 (O) Comparative Example 1 " O.005 29.8 2.9 (×) 7 (×) Comparative Example 2 " 0.01 28.8 3.1 (×) 7 (×) Comparative Example 3 No additives - 29.6 2.9 (×) 8 (×)

Claims (4)

Dimethyl dilauryl ammonium chloride, dimethyl dioleyl ammonium chloride, trimethyl monooleyl ammonium chloride, trimethyl monostearyl ammonium chloride, polyalkylene oxy monomethyl monooleyl ammonium chloride, polyalkylene oxy monomethyl dioleyl ammonium chloride as water repellent As a household sanitary thin paper containing only one or a combination of two or more of 0.1 to 0.2% by weight of the pulp slurry in terms of solids weight relative to the dry weight of the pulp, the water repellent is mixed in the pulp slurry at the time of papermaking, The household hygiene thin paper is a toilet tissue paper, The basis weight of the paper is 10 to 35 g / m 2, paper thickness is 80 to 200 μm, dry tensile strength based on JIS P 8113 (vertical direction) is 200 to 400 cN / 15 mm, (horizontal direction) is 60 to 200 cN / 15 mm , The water decomposability based on JIS P 4501 is 25-30 seconds, Hygiene thin household paper, characterized in that the absorption rate is 3.5 ~ 35.0 seconds and the water permeability is 3 ~ 6 sheets. Here, the said water absorption rate is the value obtained via the process of following (1)-(5), and the said water penetration permeability through the process of following (6)-(8), respectively. (Absorption speed) (1) Prepare distilled water, digital micro pipette, stopwatch and tripod. (2) Make two sets of specimens (test pieces) and place them on a support with a hole with a diameter of 40 mm or more in the center. (3) 5 µl of distilled water was added dropwise to the test piece with a digital micropipette at a height of 10 mm. (4) Measure the time from the moment when distilled water contacts the test piece until water is completely absorbed and the reflection of the paper surface disappears (in 0.01 seconds). (5) This test is carried out five times and the water absorption rate (seconds) is taken to the first decimal place of the average value. (Water penetration) (6) Ten sheets are stacked and 1.3 ml of water is added dropwise. (7) Visually confirm that all of the moisture has penetrated. (8) The number of penetrations of water shall be water permeability (sheet). As a sizing agent, an alkyl ketene dimer is 0.02 to 0.04% by weight of solid weight based on the dry weight of pulp of the pulp slurry, and the household hygiene thin paper mixed with the pulp slurry at the time of papermaking, The household hygiene thin paper is a toilet tissue paper, The basis weight of the paper is 10 to 35 g / m 2, paper thickness is 80 to 200 μm, dry tensile strength based on JIS P 8113 (vertical direction) is 200 to 400 cN / 15 mm, (horizontal direction) is 60 to 200 cN / 15 mm , The water decomposability based on JIS P 4501 is 25-30 seconds, Hygiene thin household paper, characterized in that the absorption rate is 3.5 ~ 35.0 seconds and the water permeability is 3 ~ 6 sheets. Here, the said water absorption rate is the value obtained via the process of following (1)-(5), and the said water penetration permeability through the process of following (6)-(8), respectively. (Absorption speed) (1) Prepare distilled water, digital micro pipette, stopwatch and tripod. (2) Make two sets of specimens (test pieces) and place them on a support with a hole with a diameter of 40 mm or more in the center. (3) 5 µl of distilled water was added dropwise to the test piece with a digital micropipette at a height of 10 mm. (4) Measure the time from the moment when distilled water contacts the test piece until water is completely absorbed and the reflection of the paper surface disappears (in 0.01 seconds). (5) This test is carried out five times and the water absorption rate (seconds) is taken to the first decimal place of the average value. (Water penetration) (6) Ten sheets are stacked and 1.3 ml of water is added dropwise. (7) Visually confirm that all of the moisture has penetrated. (8) The number of penetrations of water shall be water permeability (sheet). delete delete