JPH1147027A - Hydrolyzable wiping paper and its package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide hydrolyzable wiping paper which attains the compatibility of good hydrolyzability with wetting strength sufficient for use for wiping and cleaning of the human body and ware in the state of impregnating the wiping paper with a cleaning medicine of a high moisture content useful for practicability with good balance, is sanitary, offers a good feel of use and features good production efficiency and a portable package for the hydrolyzable wiping paper suitable for cleaning and wiping after evacuation at the time of going out, prevention of inflammation at the time of menstruation, prevention of the worsening of a hemorrhoid disease, therapeutic applications, etc. SOLUTION: A hydrolyzable nonwoven fabric obtd. by intertwining a fiber sheet consisting of a water-dispersible fiber raw material by a high-pressure water stream is impregnated with the specific aq. cleaning medicine, by which the hygienic hydrolyzable wiping paper having sufficient wet strength and good balance with the hydrolyzability is obtd. The package convenient for handling for carrying or installing may be obtd. as well by housing the hydrolyzable wiping paper in a steam impermeable soft packaging material having a take-out port.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to toilets and the like which have sufficient wet strength when used for wiping and cleaning human bodies and objects, and easily dissolve in a large amount of water when discarded after use. The present invention relates to a water-disintegrable cleaning paper that can be washed with water.

[0002]

2. Description of the Related Art Conventionally, skin stains such as hands, fingers,
As cleaning products for wiping and removing dirt from the body and the like, clean cotton belonging to quasi-drugs and "wet tissue" belonging to miscellaneous goods are known. These are impregnated with a chemical solution in which a drug such as chlorhexidine gluconate is dissolved in purified water in a local area, or impregnated with an aqueous solution containing a preservative, a disinfectant or the like, into absorbent cotton, nonwoven fabric, paper, or the like. (Japanese Unexamined Patent Publication No.
No. 22237). These products can be said to be quite effective in terms of wiping and cleaning various stains on the skin.However, it is preferable to throw them into the toilet after use and dispose of them in water. Because non-woven fabrics and papers are difficult to use, they do not disperse and float in their original form.They do not adapt to water due to water repellency. Due to such drawbacks as clogging and stacking on the upper part in the septic tank to reduce the purifying action, it has been practically impossible to use it in this conventional area.

[0003] Accordingly, the applicants have disclosed in Japanese Patent Application Laid-Open No. 59-1442.
In Japanese Patent Publication No. 6 (KOKAI), a water-soluble binder-containing water-disintegrating paper can be used in a flush-type toilet, that is, as a cleaning paper having a so-called water-washing property, which can be thrown away after use.
A novel wet tissue made by impregnating a cosmetic oily raw material with a surfactant has been disclosed. Also, Japanese Patent Application Laid-Open No. 62-8711
No. 7 discloses a paper product for cleaning hemorrhoid skin which can be flown through a flush toilet prepared by treating a low-density tissue paper with a flexible oil agent.

On the other hand, in recent years, as a product for cleaning around a toilet or for cleaning the surface of a toilet seat of a Western-style toilet before use, a cleaning agent is impregnated in water disintegrated paper so that the toilet can be flushed after use. Cleaning supplies are used.

These products are obtained by impregnating a binder-free water disintegrated paper such as toilet paper with a high-concentration water-soluble solvent such as ethanol, a surfactant and a cleaning agent composed of a small amount of water (Japanese Patent Laid-Open Publication No. H11-163873). JP-A-63-55555,
JP-A-64-64612, JP-A-64-2280
No. 4, JP-A No. 61-296159, and Japanese Unexamined Patent Application Publication No. Hei. No. -113099).

[0006] Water-disintegrated paper containing no binder, such as toilet paper, or water-disintegrated paper containing a binder such as polyvinyl alcohol, carboxymethylcellulose, or carboxymethylcellulose alkali metal salt for enhancing dry paper strength, has a high strength when impregnated with water. Since it causes a remarkable decrease (JP-A-3-167400, etc.),
The cleaning chemicals to be impregnated were limited to liquid substances containing no water and chemicals with very low water content. However,
The cleaning products impregnated with these low-moisture content cleaning agents have a problem that the wiping effect on water-soluble dirt is not sufficient. Sufficient wet strength to be used for
It is desired to achieve both good water disintegration and a good balance. In addition, these disintegrated papers have problems that the texture is poor and paper dust is often generated.

From this point of view, various improvements have been considered for hydrolyzed paper containing a binder, and the improvement is based on a certain combination of polyvinyl alcohol and borates (Japanese Patent Application Laid-Open No. 54-104963, Kaihei 3-21
3596, JP-A-3-292924, etc.),
A certain kind of bond between carrageenan and a specific salt (Japanese Patent Application Laid-Open No. 61-296159, etc.), or a certain kind of bond between a water-soluble binder having a carboxyl group and an alkaline earth metal, etc. JP-A-2-1
49237, JP-A-2-15495, JP-A-2-229295, etc.).

[0008] In any of these methods, water disintegration is first imparted by blending a binder, and as a result, the wet strength in a state of high water content, which is reduced as a result, is restored by blending a specific salt or the like. And good improvement effects are obtained respectively. However, it requires a process for compounding the binder, that boric acid is regulated for use in the human body due to toxicity due to transdermal absorption, and water-soluble binders such as carrageenan and alkali metal salts of carboxymethyl cellulose. When papermaking is carried out with addition of, there are problems that the yield on the fiber surface is poor and that the paper tends to become sticky when using the wipe.

[0009]

Under such circumstances, the present invention is to improve the wiping effect on water-soluble stains by impregnating a specific cleaning agent into hydrolytic paper not containing a specific binder. Even when impregnated with a high-moisture content cleaning agent, it is hygienic and has a good balance of wet strength sufficient to be used for wiping and cleaning human bodies and objects, and good water disintegration, and has a good usability. The purpose of the present invention is to provide a water-disintegrable cleaning paper with high production efficiency. In recent years, in response to the trend of cleanliness that has increased with the spread of hot water washer in each home, cleaning and wiping after defecation when going out, preventing inflammation during menstruation, preventing deterioration of hemorrhoids, treatment use, etc. It is an object of the present invention to provide a package of portable water-disintegrable wiping paper which is suitable for water-soluble paper, and a package of water-disintegrable paper which can be continuously taken out and is suitable for infants or nursing care.

[0010]

Means for Solving the Problems Water-disintegrated paper containing no binder, such as toilet paper, has extremely good water-disintegration properties, but has the drawback that when impregnated with water, the strength is significantly reduced. On the other hand, in recent years, spunlaced nonwoven fabrics obtained by entanglement processing of short fiber fiber sheets with a jet water stream have been used favorably for wiping the human body, etc. because of their characteristics such as good texture and hygiene. However, it usually does not have water disintegration. Therefore, the inventors of the present application have made intensive studies from such a viewpoint, and found that a water-disintegratable nonwoven fabric obtained by entanglement of a fiber sheet made of a water-dispersible fiber material with a high-pressure water stream has a specific water content substantially consisting of water. By impregnating the detergent, it has been found that a hygienic water-disintegratable wipe having sufficient wet strength and water disintegration properties can be obtained. The present inventors have found that it is possible to take out the package stored in the container without breaking each time it is used, and furthermore, it is possible to make a package that can be continuously taken out. That is, the present invention relates to the water-disintegrable nonwoven fabric,
It is based on the discovery that, unlike existing carboxymethylcellulose-containing hydrolyzed paper or polyvinyl alcohol-based hydrolyzed paper, the wet strength decreases with an increase in the water content of the impregnating solution, but rather the wet strength increases with an increase in the water content.

[0011] That is, the present invention provides an antibacterial agent of 0.001 to a non-binder-containing hydrolyzable nonwoven fabric obtained by entanglement of a fiber sheet made of a water-dispersible fiber raw material with a high-pressure water stream.
This is a water-disintegrable wipe which is impregnated with an aqueous detergent containing 2% by weight and 1 to 30% by weight of a water-soluble organic solvent.

The present invention also relates to a binder-free water-disintegratable nonwoven fabric obtained by entanglement of a fiber sheet made of a water-dispersible fiber raw material by a high-pressure water stream, wherein 0.001 to 2% by weight of an antibacterial agent and a water-soluble organic solvent are added. Water-degradable wipes impregnated with an aqueous detergent containing 1 to 30% by weight are laminated and stored in a sealed bag made of a soft packaging material that is substantially impermeable to water vapor and has an outlet. A package of water-disintegrable wipes, characterized in that:

Hereinafter, the present invention will be described in detail. The water-disintegratable non-woven fabric used in the present invention is composed of a water-dispersible fiber raw material substantially composed of a natural fiber such as a wood pulp fiber or a non-wood pulp fiber, or a synthetic fiber such as a rayon fiber or a mixture thereof without a binder. Is done. The fiber sheet made of the water-dispersible fiber raw material is, for example, “Non-woven fabric information” issued by Non-woven Fabric Information Co.
No. 283, pp. 4-8, the fibers are entangled by a high-pressure water stream and converted into a water-disintegratable nonwoven fabric, but the reinforcing net is not used. As such a water-dispersible fiber material, specifically, pulp, rayon, polypropylene, polyethylene terephthalate, short fibers such as cotton can be used,
A water-dispersible fiber raw material mainly composed of pulp fiber and / or rayon fiber is preferably used in consideration of the feeling of the wiping paper, the water retention, and the like.

The antibacterial agents used in the present invention include paraoxybenzoic acid esters such as methylparaben, ethylparaben, propylparaben and butylparaben; benzoic acid and its sodium salt, salicylic acid and its sodium salt, sorbic acid and its potassium salt Acid-based preservatives such as dehydroacetic acid and its sodium salt; phenols such as isopropylmethylphenol and resorcin; halogenated phenols such as hexachlorophene and triclosan; carbanilides such as triclocarban and halocarban; benzalkonium chloride; Cationic systems such as benzethonium chloride, cetylpyridinium chloride, chlorhexidine gluconate, and chlorhexidine hydrochloride; and phenoxyethanol, chlorobutanol, zinc pyrithione, and paraphenolsulfonic acid Lead, compounds such as hinokitiol. Of these, one or more of paraoxybenzoic acid esters and cationic antibacterial agents are suitably used in combination.

The antibacterial agent used in the present invention is preferably incorporated in an aqueous detergent in an amount of 0.001 to 2% by weight.
Particularly, 0.01 to 1% by weight is preferable. When the amount is less than this range, the effect is not sufficient. When the amount exceeds this range, not only is it costly wasteful, but also adverse effects may appear, which is not advisable.

Examples of the water-soluble organic solvent used in the present invention include monohydric lower alcohols such as ethanol and propanol; ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol;
Dipropylene glycol, butylene glycol, 3-methyl-1,3-butanediol (isoprene glycol), 2,2-dimethylpropane-1,3-diol,
Hexylene glycol, 2,4-dimethylpentane-
Dihydric alcohols such as 2,4-diol; polyhydric alcohols such as glycerin, sorbitol and diglycerin; ethers of the alcohols with monohydric lower alcohols such as methanol, ethanol, propanol and butanol; or the alcohols and lower fatty acids And esters with These may be used alone or in combination of two or more. Of these, dihydric alcohols and polyhydric alcohols are preferred, and propylene glycol, 1,3-butylene glycol, 3-methyl-1,3-butanediol and glycerin are typical examples. These are in addition to the usual effects of antimicrobial solvents or humectants,
It has the effect of improving water disintegration while maintaining wet strength, and achieving a good balance between water disintegration and cleansing power for water-soluble stains. Is preferred, and particularly preferably 2 to 20% by weight. If the amount is less than this, the effect is not sufficient, and if it is too large, the wiping power for water-soluble stains is reduced.

The aqueous detergent used in the present invention contains the above-mentioned antibacterial agent as an essential component. However, as long as the object of the present invention is not impaired, a therapeutic agent usually used as necessary may be used. Needless to say, a humectant, a surfactant, an antioxidant, a fragrance and the like may be further added.

That is, the aqueous cleaning agent includes a therapeutic agent containing an anti-inflammatory agent or the like as an active ingredient so as to be suitable for cleaning and wiping after defecation, preventing inflammation during menstruation, preventing deterioration of hemorrhoids, and therapeutic use. It can be contained. Drugs used for such purposes include cortisone, hydrocortisone, hydrocortisone acetate, dexamethasone, dexamethasone acetate, prednisolone, prednisolone acetate, betamethasone, betamethasone valerate, hydrocortisone butyrate propionate, lysozyme chloride, aloe, ictamole, guaiazulene, glycyrrhizinate And its salts, glycyrrhetinic acid and its derivatives, anti-inflammatory agents such as methyl salicylate, hinokitiol; granulation-promoting agents such as allantoin and purple root; dibucaine hydrochloride, ethyl aminobenzoate;
Local anesthetics such as lidocaine and procaine hydrochloride; antihistamines such as diphenhydramine and diphenhydramine hydrochloride; hemostatic agents such as naphazoline hydrochloride and phenylephrine hydrochloride; vitamins such as tocopherol acetate, retinol palmitate and ergocalciferol; blood circulation promotion such as camphor and menthol Agents; astringents such as aluminum hydroxychloride.

The water-disintegrable wiping paper of the present invention is characterized in that the above-mentioned water-soluble detergent is added to the above-mentioned water-disintegrable paper by 100 to 30 parts by weight.
It is obtained by impregnation of 0%, preferably 150 to 250%. If the impregnated amount is less than 100% by weight, the wiping effect is not sufficient, and if it exceeds 300% by weight, the wiping effect is increased, but the wet strength is reduced and the feeling of use is reduced due to excessive wetting.

The water-disintegrable wiping paper of the present invention is heat-sealed to a substantially water-vapor-impermeable soft wrapping material in consideration of the number of sheets suitable for one use so as to be easy to store, carry and use. It can be sealed by a method such as a single package, more preferably, a plurality of use minutes, that is, a plurality of sheets stored in a sealed bag made of a soft packaging material having an outlet,
It can be a portable pack or a stationary package. As such a soft packaging material, a composite material generally used for packaging applications such as medicines and retort foods that require moisture-proof packaging can be used. For example, PT / PE, OPP / P
E, PET / PE, PET / CPP, Ny / PE, PT
/ PE / Al / PE, OPP / PE / Al / PE, PE
T / PE / Al / PE, PET / VM / PE, OPP /
VM / PE, PET / Al / CPP, Ny / Al / CP
And a lamination film for packaging such as P. Here, PT: ordinary cellophane, PE: polyethylene, A
l: aluminum foil, OPP: biaxially oriented polypropylene, PET: polyester, VM: vacuum deposition of aluminum,
CPP: undrawn polypropylene, Ny: biaxially drawn nylon.

The outlet may be of any structure and material as long as it can be repeatedly opened and sealed. For example, the outlet may be made of vinyl chloride (PVC) which is used in a usual portable bag. A flap label or a plastic opening / closing lid can be used. At this time, the outlet provided in the soft packaging material and covered with a flap label or the like has a width exceeding 10 mm, preferably 2 mm.
It is set to 0 mm or more. If the width is smaller than this, the water-disintegratable nonwoven fabric is likely to be broken at the time of removal from the package. On the other hand, the water-disintegrable wiping paper of the present invention suitable for use as a package having such an outlet has a wet tensile strength of 20 mm in length.
0 g / 30 mm width or more, preferably 300 g / 30 mm
The width is not less than 50 g / 30 mm width, preferably not less than 100 g / 30 mm width. When the wet tensile strength is lower than this range, the water-disintegratable nonwoven fabric tends to be broken at the time of removal.

[0022]

According to the invention of the present application, even when impregnated with a cleaning agent having a high water content, which has a high wiping effect on water-soluble stains, it has sufficient moisture to be used for wiping and cleaning human bodies and objects. There is provided a water-disintegrable wiping paper having good balance between strength and good water-disintegrability, good usability, and high production efficiency. Further, according to the present invention, there is provided a hygienic water-disintegratable cleaning paper package sealed in a soft packaging material so that the water-disintegrating cleaning paper of the present invention is convenient to store, carry and use. . That is, according to the present invention, water-disintegrating clean paper and its packaging suitable for purposes such as cleaning and wiping after defecation, preventing inflammation during menstruation, preventing and treating hemorrhoids, and further for infants or nursing care. A body is provided.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to embodiments, but the present invention is not limited to these embodiments.

Examples 1 to 3 and Reference Examples 1 and 2 Table 1 shows rayon fibers for wet papermaking of 1.5 d × 7 mm and beaten pulp fibers.
The basis weight 55 g / m ² obtained by hydroentanglement of a fiber sheet prepared from a water-dispersible fiber material blended at the weight ratio shown in
Was used as a water-disintegratable nonwoven fabric containing no binder. To this base material, 0.2% by weight of paraoxybenzoic acid methyl ester (methylparaben) and 0.1% of paraoxybenzoic acid ethyl ester (ethylparaben) were added.
An aqueous detergent containing propylene glycol (PG) in an amount shown in Table 1 by weight and in the amount shown in Table 1 was impregnated in an amount of 2.0 times the weight of the substrate. After leaving the obtained water-disintegrable wiping paper for 48 hours or more, the wet tensile strength and the water-disintegration property were measured by the following methods, and the results are shown in Table 1.

[0024]

[Table 1]

The table also shows a comparison between the solubility of paraben in the aqueous detergent and the cleaning power evaluated according to the practical evaluation described later. The criteria for determining the solubility of parabens were。: uniform dissolution, ×: cloudy (partially insoluble).

<Wet tensile strength> After cutting the water-disintegratable wiping paper in a wet state into a strip having a width of 30 mm and a length of 100 mm,
Using an autograph (S-100-C manufactured by Shimadzu Corporation), the strength at break was measured under the conditions of a chuck interval of 50 mm and a tensile speed of 100 mm / min. As the results, the geometric mean values of the measured values in both the vertical and horizontal directions were used except where otherwise noted.

<Water disintegration> 150 m in 200 ml beaker
l of water, water-disintegrable wipes cut to 50 mm x 50 mm are put into the water, and the shaker (SA31 manufactured by Yamato Scientific Co., Ltd.) is added.
Mold), stroke length 40 mm, shaking speed 2
Under the condition of 00 reciprocations / minute, the time required to collapse to a size of about 10 mm was measured.

[0028]

Examples 4 to 8 and Comparative Examples 3 to 7 Substrates B to F shown in Table 2 were used in place of the water-disintegratable nonwoven base material A in Example 1, and propylene glycol in Example 1 was used. The amount of 1,3-butylene glycol (1,3-B
Except for using G), the water degradability and wet tensile strength were measured in the same manner as in Example 1, and the results are shown in Table 2.

[0029]

[Table 2]

Further, in Example 8, the obtained water-disintegrable clean paper was used as a package, and Comparative Examples 10 and 13 described later were used.
In addition, a practical evaluation was conducted by 13 panelists, and the results are shown in Table 3.

<Practical evaluation> A paneler was used as a wipe to replace toilet paper, and the strength, texture (feel) and cleaning power (easiness of wiping) were evaluated. The criteria are as follows. ◎: Excellent, ○: Good, △: Normal

[0032]

[Table 3]

[0033]

Comparative Examples 8 to 13 A carboxymethylcellulose sodium salt (CMC sodium salt) dissolved to 1% was dissolved in a toilet paper-like water-disintegratable sheet having a basis weight of 25 g / m ² prepared from beaten pulp fibers. CM
A CMC-containing sheet obtained by spray coating and drying so that the C content is 3% based on the sheet weight, or a basis weight of 20 g / m ² composed of 44% rayon fiber, 6% polyvinyl alcohol fiber, and 50% pulp A composite water disintegrated paper obtained by embossing a toilet paper having a basis weight of 20 g / m ² between two polyvinyl alcohol-containing nonwoven fabrics was used as a base material, and the amount 1 shown in Table 2 was used instead of propylene glycol. Water degradability and wet strength were measured in the same manner as in Example 1 except that 1,3-butylene glycol was used. However, in Comparative Example 10, 1% by weight of calcium chloride was further added as an aqueous detergent component. For the practical evaluation of Comparative Example 10, a two-ply product was provided. The evaluation results are shown in Tables 2 and 3.

[0034]

Examples 9 to 10) Comparative Example 14 A water-disintegratable nonwoven fabric substrate G having a rayon / pulp ratio of 50/50 prepared in the same manner as in Example 1 was cut into a size of 200 mm × 200 mm and folded like a tissue paper. Length 10 folded in half
A folded product having a width of 0 mm and a width of 75 mm was impregnated with an aqueous detergent having the same composition as in Example 2 so as to be 1.6 times the weight of the substrate. Ten of these are piled up, 150 mm long and 9 wide.
It was stored in a sealed bag made of a 0 mm PET / CPP lamination film. An oval outlet having a size shown in Table 4 is perforated on the upper surface of the enclosing bag so as to be openable, and the upper surface of the opening has a width of 45 mm and a length of 9 mm.
A 0 mm vinyl chloride flap label was attached. Table 7 shows the number of packages in which even one tear occurred and the total number of tears that occurred, as a result of evaluating the take-out properties by hand using the seven portable packages obtained.

[0035]

[Table 4]

[0036]

Examples 11 to 14 and Comparative Example 15 Example 10 was repeated except that the hydrolyzable nonwoven fabric substrates G to J having a rayon / pulp ratio of 50/50 shown in Table 5 or the composite hydrolyzed paper of Comparative Example 12 were used.
In the same manner as described above, a package of water-disintegrable cleaning paper was obtained. Table 5 shows the measured values of the wet strength in the vertical direction and the horizontal direction of the base material, and the number of tear occurrences evaluated for two packages in the same manner as in Example 10.

[0037]

[Table 5]

[0038]

Example 15 Eighty sheets of the water-disintegrable wiping paper of Example 6 cut into a size of 160 mm in length and 200 mm in width, folded and laminated so that each leaf overlaps each other, and having a minor diameter of 20 m
m, and housed in a soft packaging material having a length of 200 mm and a width of 130 mm having an elliptical outlet opening having a major axis of 60 mm on the upper surface. As a result of evaluation of the manual removal property, continuous removal was possible without causing breakage.

[0039]

Claims (7)

[Claims] 1. An antibacterial agent in an amount of 0.001 to 2% by weight and a water-soluble organic solvent in an amount of 1 to 30% by weight in a binder-free water-disintegratable nonwoven fabric obtained by entanglement of a fiber sheet made of a water-dispersible fiber material by a high-pressure water stream. % Water-degradable wipes impregnated with an aqueous detergent containing 0.1% by weight. 2. The water-disintegrable wipe according to claim 1, wherein the water-dispersible fiber material is pulp fiber and / or rayon fiber. 3. The aqueous detergent contains one or more selected from anti-inflammatory agents, granulation formation promoters, local anesthetics, antihistamines, hemostatics, vitamins, blood circulation enhancers and astringents. The water-disintegratable clean paper according to claim 1, which comprises: 4. An encapsulating bag comprising the water-disintegrable wiping paper according to any one of claims 1 to 3 laminated thereon, which is made of a soft wrapping material that is substantially impermeable to water and has an outlet. A package of water-disintegrable cleaning paper, which is stored. 5. The water-disintegratable clean paper has a wet tensile strength of 200
g / 30mm width or more and 50g / 30mm in width
The package of the water-disintegrable wipe according to claim 4, which is not less than the width. 6. The package of water-disintegrable wipes according to claim 4, wherein the width of the outlet of the enclosing bag is larger than 10 mm. 7. The package of water-disintegrable wipes according to claim 4, wherein the laminated water-disintegratable wipes are folded such that the leaves overlap each other.