JPH1072600A - Sheet-like product for washing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet-like product for washing which facilitates the adjustment of the amt. of it used in the practical use, is excellent in easiness and simplicity in handling, and can greatly reduce the leak or scatter of the contents by constructing the same from a thin layer contg. a fiber softener and a means for supporting layer. SOLUTION: The figure shows an example of the sheet-like product comprising a thin layer 1 contg. a fiber softener and a supporting means 2, 2'. In this example, a water-soluble sheet is used as the supporting means. Pref, the water- soluble sheet comprises a water-soluble polymer dissolvable in 50 deg.C water (e.g. polyvinyl alcohol). A known fiber softener based on a quaternary ammonium salt can be used, an esp. pref, example being a quaternary ammonium salt of a di-long-chain-alkyl type. The process for preparing the product is not specifically limited; for instance, a doughy softener is supplied into between at least two water-soluble sheets moved e.g. by rotating rollers, etc., and is thus press formed. The doughy compsn. is made to have a penetration (25 deg.C) of 0.1-10kg/cm<2> .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laundry product in which the amount of use is easy to adjust in actual use, is excellent in simplicity, and greatly reduces leakage and scattering of contents. Agent.

[0002]

2. Description of the Prior Art In the past, softening compositions for fibers which are commercially available in the past are mainly liquids containing 2 to 30% by weight of a softening activating base. Or powdering or granulating some flexible substrates,
Or, an attempt to make a tablet has been made.

[0003] However, these conventional methods have a problem of leakage of contents in the case of liquids or powders, and are inconvenient in measurement. In addition, the type such as a tablet needs to directly touch the softening composition, and there is a problem that the softening composition or its raw material remains in the hand. In particular, there is a problem when arbitrarily adjusting the usage amount. In other words, when a tablet is broken by hand, it takes a lot of effort, and the composition of the product is directly touched by hand, and when the tablet is broken, the powder or the like may be scattered or leaked. This is not preferable because it requires time and effort for rinsing and cleaning, and is not suitable for substantially changing the usage amount in an analog manner. In addition, a type in which a flexible base material is impregnated with a water-insoluble nonwoven fabric is known. However, this type acts on high heat during drying in the use of a drier, and has an effect on solubility in a washing process. It differs from the delicate invention.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies in order to obtain a washing product which is excellent in simplicity and free from scattering and leakage of contents. As a result, by providing a means for maintaining a thin layer containing a fiber softening agent, compared to the conventional form of impregnating a water-insoluble nonwoven fabric and throwing it into a dryer at the time of drying, There is no need to worry about the softener touching the hand, and when breaking when adjusting the amount of use, it is easy to use because there is no leakage of the contents like a tablet type, and it is necessary to remove the sheet after rinsing and drying The present inventors have found that a laundry product having no simplicity can be obtained, and have completed the present invention.

[0005] That is, the present invention provides a sheet-like laundry product comprising a thin layer containing a fiber softening agent and means for maintaining the thin layer (hereinafter sometimes referred to as "maintenance means"). is there.

The sheet-like laundry product of the present invention has a thin layer containing a fiber softening agent and means for maintaining the thin layer, and the thin layer may be formed continuously or discontinuously. The retaining means may be located either outside or inside the thin layer. FIG. 1 shows an example of the sheet-like laundry product of the present invention. In FIG. 1, 1 is a thin layer containing a fiber softening agent, and 2 and 2 'are maintenance means. In this example, a water-soluble sheet arranged on both sides of the thin layer is used as the maintenance means.

In the present invention, the means for maintaining the thin layer is such that the thin layer comes into contact with another substance (for example, contact with another thin layer or a user).
In this case, by reducing the adhesiveness of the thin layer, the damage due to contact is also reduced and the shape of the thin layer is maintained, or the scattering of powder or particles from the thin layer is suppressed, and the shape of the thin layer is reduced. Is a means for maintaining the function, and may have other functions. In the present invention, it is particularly preferable to use a water-soluble sheet as such a maintaining means.

[Water-soluble sheet] First, the water-soluble sheet used in the present invention will be described. As the water-soluble sheet used in the present invention, a water-soluble film, a nonwoven fabric or woven fabric made of a water-soluble polymer fiber, or a laminated sheet of a nonwoven fabric or woven fabric made of a water-soluble film and a water-soluble polymer fiber is preferable. These water-soluble sheets are composed of a water-soluble polymer. Specifically, polyvinyl alcohol, polyvinylpyrrolidone, pullulan, polyacrylamide, polyacrylic acid, polymethacrylic acid, polyitaconic acid, polyethylene oxide, polyvinyl methylene ether, xanthan gum, guar gum, collagen, carboxymethyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, etc. In particular, polyvinyl alcohol or polyvinyl alcohol modified with maleic acid or itaconic acid is preferable.

Among such water-soluble sheets, examples of the water-soluble nonwoven fabric include JP-A-8-127919, JP-A-8-3848, JP-A-5-321105,
JP-A-7-42019, JP-A-3-86530, JP-A-3-279410, JP-A-3-19
No. 9408, JP-A-2-112406, and JP-A-61-75862. As the woven fabric, those obtained from the various water-soluble polymer fibers described above can be used. In addition, the diameter of the water-soluble polymer fiber constituting the nonwoven fabric or the woven fabric is preferably from 5 to 200 μm, particularly preferably from 5 to 50 μm.

[0010] Examples of the water-soluble film include US Patent Nos. 3,186,869 and 3,198,740.
US Patent No. 3280037, US Patent No. 332267
4, No. 48-33837, 48-883.
No. 43, 50-140958, 51-1
No. 50, No. 52-77961, No. 55-15
1853, 57-1851, JP-A-59
No. -180085, No. 61-57700, No. 61-97348, No. 61-98752,
Nos. 61-200146, 61-200147, 61-204254, 61-2280
Nos. 57 and 62-57492 and 62-15
Nos. 6112, 62-275145, 63
-8496, 63-8497, 63-
Nos. 12466, 63-12467 and 64
JP-A-29408, JP-A-64-29438, JP-A-2-60906, JP-A-2-108534,
JP-A-2-163149, JP-A-3-59059,
Nos. 4-53900, 4-57989, 4-63899, 4-72180, and 4
-147000, 4-1998, 4-1
No. 74792, No. 4-202600 and the like.

Further, as the water-soluble sheet of the present invention, a nonwoven fabric or a woven fabric made of the above-mentioned water-soluble polymer fiber and a laminated sheet made of a water-soluble film can be used. As a method of obtaining such a laminated sheet, other than a method of laminating a water-soluble film on one surface of a nonwoven fabric and bonding by heat sealing or the like, a film is formed by applying a water-soluble polymer to one surface of a nonwoven fabric or the like. Method.
When such a laminated sheet is used, it is preferable that the water-soluble film is disposed so as to be in contact with the thin layer containing the fiber softening agent, and the outside is preferably made of a nonwoven fabric or the like. FIG. 2 shows a sheet-like laundry product of the present invention using such a laminated sheet. FIG. 2 shows a sheet-like laundry product comprising a thin layer 21 and a laminated sheet serving as a maintenance means. 22, 22 'are arranged.

Among the water-soluble sheets exemplified above, a non-woven fabric or a woven fabric made of a water-soluble polymer fiber is preferable due to the easiness of tearing when adjusting the amount of use, and in particular, polyvinyl alcohol, maleic acid, itacone and the like. Nonwoven fabrics or woven fabrics obtained using fibers made of acid-modified polyvinyl alcohol are preferred. Further, a water-soluble laminated sheet in which a water-soluble film made of polyvinyl alcohol or polyvinyl alcohol modified with maleic acid or itaconic acid is laminated on the inside of a nonwoven fabric or woven fabric made of the water-soluble polymer fiber is also preferable.

The water-soluble sheet used in the present invention is 50
Those which are soluble in water at a temperature of ° C are preferred. Here, “dissolve” means that 0.5 g of a water-soluble sheet is dissolved in 1 liter of water at 50 ° C. within 10 minutes, preferably within 7 minutes, and further, a sieve of No. 8.6 (locale: 2000 μm). Means no residue left.

[Softening agent for fiber] As the softening agent for fiber of the present invention, a known softening agent having a quaternary ammonium salt as a softening base can be used. In particular, a quaternary ammonium salt of a di-long chain alkyl type is preferable, and -COO-, -OCO-, -NHCO-, -CO
It may include a linking group such as NH-. In addition, as an optional ingredient, a fragrance, a dye, a silicone compound,
It may contain antibacterial agents, solvents, water-soluble salts, and the like.

The following are examples of flexible bases usable in the present invention. (1) A novel quaternary ammonium salt represented by the general formula (I).

[0016]

Embedded image

(In the formula, R ¹ represents a linear or branched alkyl group or alkenyl group having ¹ to 35 carbon atoms, R ² and R ³ are the same or different, and are H or saturated or substituted with 8 to 36 carbon atoms. R ⁴ represents an acyl group derived from an unsaturated fatty acid,
A represents a linear or branched alkylene group having 1 to 10 carbon atoms which may be substituted with a hydroxyl group, and Y and Z are the same or different and have 2 to 3 carbon atoms. Represents a linear or branched alkylene group, n
Y and m Zs may be the same or different. n
And m are the same or different and are each a number of 1 to 20 indicating the average number of moles of alkylene oxide added, and X represents an anionic group. (2) A quaternary ammonium salt represented by the following general formula (II).

[0018]

Embedded image

[In the formula, R ^{1 represents a} linear or branched alkyl or alkenyl group having 20 to 44 carbon atoms. R ² , R ³ , R ⁴ : the same or different, and represents an alkyl group or a hydroxyalkyl group having 1 to 5 carbon atoms. Z: an alkylene group having 2 to 3 carbon atoms, wherein the alkylene group having 2 carbon atoms and the alkylene group having 3 carbon atoms may be mixed. m: Indicates the number of 0 to 20. n: Indicates the number of 1 to 6. X ^-: represents an anion group. As the quaternary ammonium salt represented by the general formula (II), a quaternary ammonium salt represented by the following general formula (II-1) is preferable.

[0020]

Embedded image

[Wherein, R ² , R ³ , R ⁴ , n, X ⁻ : have the above meanings. (3) The compound represented by the general formula (III), the general formula (IV)
And a compound represented by the general formula (V), and at least one selected from the group consisting of an acid neutralized product and a quaternized product of these compounds.

[0022]

Embedded image

Wherein R ² represents an alkyl group having 1 to 4 carbon atoms or a hydroxyalkyl group. R ³ , R ⁴ : same or different, -COO-bond or -CONH-
A straight-chain or branched-chain carbon atom 12 which may be interrupted by a bond
~ 32 alkyl groups or alkenyl groups. ]

[0024]

Embedded image

Wherein R ⁵ and R ^{6 are the} same or different and represent an alkyl group or hydroxyalkyl group having 1 to 4 carbon atoms. R ⁷ , R ⁸ : same or different, straight or branched carbon number 12
~ 32 alkyl groups or alkenyl groups. p: Indicates the number of 1 to 10. ]

[0026]

Embedded image

Wherein R ⁹ may be interrupted by a —COO— bond or a —CONH— bond,
It represents a linear or branched alkyl or alkenyl group having 12 to 32 carbon atoms. R ^{10 represents a} straight-chain or branched-chain alkyl or alkenyl group having 11 to 31 carbon atoms. Further, it is preferable to add a plasticity modifier to the softening agent for fibers of the present invention for the purpose of imparting softness when processed into a sheet. Examples of plasticity modifiers that can be used include glycerin, sorbitol, polyhydric alcohols such as ethylene glycol for the purpose of imparting softness, and when the base is too soft and easily leaks between water-soluble substrates. For the purpose of imparting hardness, higher fatty acids having 8 to 24 carbon atoms, higher alcohols having 8 to 24 carbon atoms, and a molecular weight of 10
Methyl cellulose and carboxymethyl cellulose of 100 to 100,000 are exemplified. Furthermore, the molecular weight is 200-
60,000 polyethylene glycol, molecular weight 200
A high molecular weight compound such as dextrin of 100,000 can be added with a low molecular weight compound for imparting softness, and a high molecular weight compound can be added for imparting hardness.

[Sheet-like laundry product] The method for preparing the sheet-like laundry product of the present invention is not particularly limited. A method of attaching at least one layer of a water-soluble sheet, while supplying a dough-like, powdery or granular softener between two or more water-soluble sheets moving by rotation of a roller or the like. , A method of compression molding with the same or different rollers, etc., a dough-shaped softening agent,
A method of applying to at least one or more spread water-soluble sheets, and attaching at least one or more water-soluble sheets to the applied softening agent, etc. In the case of a powder or a granule, a granule formed from a softener and a carrier in advance is formed into a sheet between water-soluble sheets by using a compressive force of a roller or the like utilizing the adhesiveness. A method or a sheet may be formed by binding between powders or granules with a water-soluble organic material such as the plasticizer modifier described above.
It may be formed into a sheet in a state of being taken in the dough. Here, the “dough” refers to a kneaded product of the powder composition and a small amount of liquid, and the liquid includes those which are liquefied by heating, and may be the plasticity modifier. The dough-like thin layer containing the fiber softener of the present invention often has tackiness on the surface. Further, in the case of a powdery or granular composition, it can be prepared by a method such as compression molding or laminating after uniformly placing a powdery fiber softening agent between water-soluble sheets or on a water-soluble sheet. .

It is also possible to use a water-soluble nonwoven fabric or a water-soluble woven fabric as a means for maintaining a thin layer, impregnate the liquid composition, and carry the composition on the nonwoven fabric or woven fabric to form a layer. . In this case, the liquid component in the fiber softening agent can be impregnated into the nonwoven fabric or the like, and other powder components can be sprinkled on the surface of the nonwoven fabric or the like after the impregnation. In the present invention, when the thin layer containing the fiber softening agent is in the form of a dough, it is possible to reduce the tackiness of the dough surface by coating the surface with particles of a water-soluble substance or water-soluble fibers. Yes, such a maintenance means can be adopted.

In particular, when preparing a dough, by adjusting the amount of the soft base and the amount of the plasticity modifier,
The penetration hardness of the dough at 25 ° C. is 0.1 to 10 kg.
/ Cm ² is preferable. More preferably 0.3
８8 kg / cm ² . Here, the penetration hardness of the dough is measured by the following method. [Measurement Method of Penetration Hardness] A total of 1000 g of each component of the fiber softening agent and a dye (Red No. 106) for a marker are charged into a universal mixing stirrer (model 5DM-03-r) manufactured by Dalton.
After the temperature is adjusted to about 25 ° C., kneading is performed at a low speed (about 100 rpm) for 1 minute, and then at a high speed (about 200 rpm).
The k value of the kneaded material is measured using a colorimeter (CR-300) manufactured by Minolta Co., Ltd., and kneading is performed at high speed until the b value becomes constant to obtain a uniform fiber softening agent. FUDOH RH
Using an EO METER (RT-2010J-CW) rheometer, a FUDOH rheometer dedicated adapter (bottom area 1
cm ² ), and the stress when the adapter enters the fiber softener at a penetration speed of 20 mm at a penetration speed of 30 cm / min is measured, and this is defined as the penetration hardness.

It is desirable that the sheet-like laundry product of the present invention has a thickness of 0.05 to 4 mm from the viewpoint of ease of use. When the thickness is 4 mm or less, the sheet-like laundry product can be easily broken. When the thickness is 0.05 mm or more, a sufficient amount of the fiber softening agent can be filled. A more preferred thickness is 0.25 to 2 mm.

The sheet-like laundry product of the present invention preferably has an area density of 0.005 to 1.0 g / cm ² . When the area density is in this range, the filling amount of the fiber softening agent is sufficient, and good solubility is obtained. More preferable area density is 0.02 g / cm ^{2 to} 0.5 g / c.
m ² .

The sheet-like laundry product of the present invention has less than 0.8 g of the fiber softening agent per 200 cm ² at the time of breaking. Here, "runoff"
Temperature 20 ° C, humidity 60% R. H. In room 10
The central part (half position in the longitudinal direction) of the sheet-like laundry product prepared in a size of cm × 20 cm is cut in half with commercially available scissors, and a 5 mm portion of the uncut side is fixed with a clip. While hanging the cut part of the cut side down for 30 minutes, receive the lost or leaked fiber softening agent on the plastic tray, tap the cutting sheet three times with a glass rod, and then collect the contents collected in the tray. (Fiber softener). A small amount of this loss means that the contents are less scattered or leaked when the sheet-like laundry product is broken in actual use, and is more desirable.

The laundry product of the present invention is in the form of a sheet, and does not leak or leak when broken or when used, so that various filling methods and usage methods are possible. For example, perforating a sheet-like laundry product to make it easier to break, printing designs and characters to make the appearance beautiful, and printing usage and precautions for use To make it easy for the user to recognize.
Although it is easy to form a continuous layer from the manufacturing process of the thin layer, it is of course possible to form a discontinuous thin layer.

Further, by loading the sheet-like laundry product of the present invention into an appropriate container, a more convenient laundry product can be obtained. For example, a plurality of sheet-like laundry products of the present invention are prepared, a part of each sheet is folded,
By laminating the sheets in a zigzag pattern and loading them in a predetermined container, a container-containing laundry product from which the sheets can be continuously taken out can be obtained. Such a laundry product is shown in FIG. By laminating the sheets 31 folded in half as shown in FIG. 3A in a zigzag manner and loading them in a predetermined container, for example, a paper box 32, a laundry product from which the sheets can be continuously taken out can be obtained. In this case, the area of the sheet is preferably 9cm ² or more, more preferably 40~500cm ^2. In addition, a laundry product in which the sheet-like laundry product of the present invention having a width of 4 cm or more and a length of 30 cm or more is rolled and loaded into a predetermined container can be obtained. These product forms are preferred because of their simplicity and ease of adjusting the amount used. In particular, in the case of a roll shape, a metal and / or resin sheet cutting tool is attached to a loading container (such as a paper box) to make it easier to use, or to be parallel to the short axis at regular intervals. It is also possible to perforate and remove a sheet of a certain size from the inside of the roll artificially or mechanically. Of course, a scale may be attached to the sheet to display the usage amount or the like.

As a simpler filling mode, a sheet-like laundry product containing 1/5 to 1/1 amount of the softening active substance per use is arranged in a loading container or simply filled without being aligned. There is also a form that has been done. In this form, it is possible to store the remnants broken for partial use in the original container.

[0037]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited thereto.

<Test Method> The test method employed in the examples will be described below in advance. [Method of Measuring Runoff and Leakage When Breaked] Temperature 20 ° C, humidity 60% H. In the room of 10c
The central part (half position in the longitudinal direction) of the sheet prepared to a size of mx 20 cm is cut in half with commercially available scissors, and a 5 mm portion of the uncut side is fixed with a clip, and both cut parts are cut. While hanging down for 30 minutes, receive the lost or leaked fiber softening agent on a plastic tray, and tap the cutting sheet three times with a glass rod. I asked.

Example 1 42% by weight of a softening base represented by the following formula (iv), dihydrogenated tallow alkyl dimethyl ammonium chloride 3
A dough-like composition (penetration hardness 0.7 kg / cm ² ) was prepared by mixing 5% by weight, 11% by weight of glycerin, 11% by weight of propylene glycol and 1% by weight of d-limonene.

[0040]

Embedded image

Next, a nonwoven fabric having a basis weight of about 25 g / m ² prepared according to Example 2 of Japanese Patent Publication No. 3-25539 was laminated with “Hicelon” (a water-soluble film) manufactured by Nippon Synthetic Chemical Industry Co., Ltd. Two laminated sheets of × 20 cm were prepared. Next, lay one laminated sheet on a 13 cm × 22 cm steel plate such that “Hi-Selon” is on top, spread the above composition evenly on it and place 7 g on it, and place another laminated sheet on it. Spread, another 13cm on it
A × 22 cm steel plate was placed. This is AIKOEngin
Using a pressing machine manufactured by Eering Co., a load of 400 kgf was applied to 15 places on the steel plate to obtain a sheet softener.
This operation was repeated 50 times to obtain 50 sheet softeners containing 7 g of the softener in a 10 cm × 20 cm sheet. The average area density of the softener for sheet-like garments is 0.1.
044 g / cm ² , and the average thickness was 0.9 mm.
After this, the whole is folded in two and superimposed so as to mesh with each other as shown in FIG.
× Loaded in a 9 cm high paper box. 6cm × at the top of the box
It was confirmed that a sheet-shaped softener could be continuously taken out by making a 4.5 cm rectangular hole. Further, this sheet could be broken by hand, and when the sheet was broken, there was no leakage or outflow of the softener, and the sheet hardly adhered to the hand. Furthermore, when the leak of the softener at the time of breakage, the amount of outflow was measured by the above method,
It was 0.00 g.

Example 2 Softening bases (v), (vi), (vii) and (viii) in Table 1
16% by weight of (v), 16% by weight of (vi), (vii)
And 18% by weight of (viii). Further, 6% by weight of a 30 mol ethylene oxide adduct of isotridecyl alcohol, 3% by weight of an adduct of 50 mol ethylene oxide of oleylamine, 3% by weight of hardened tallow fatty acid, 3% by weight of stearic acid 2 mol% of an esterified product of 2 mol and 1 mol of pentaerythritol, polyethylene glycol (average molecular weight 3,
000) 8% by weight, glycerin 9% by weight, Basic Blue 7
0.001% by weight, 0.001% by weight of Basic Yellow 28, 0.003% by weight of denatonium benzoate and the balance of water (a penetration hardness of 1.1 kg /
cm ² ).

[0043]

[Table 1]

Next, a nonwoven fabric having a basis weight of about 25 g / m ² prepared according to Example 2 of JP-A-8-3848 was mixed with 1
Two pieces cut to 0 cm × 20 cm were prepared.

Next, one end of the nonwoven fabric is sandwiched between two stainless steel rollers (manufactured by Sanriki Seisakusho) having a diameter of 50 mm and designed to rotate in mutually opposite directions, and the rollers are manually operated. While rotating, 7 g of the above composition was inserted between two nonwoven fabrics to obtain a softening agent for sheet-like clothing. Repeat this operation 50 times, 10 cm × 2
50 sheet softeners containing 7 g of the fiber softener composition in a 0 cm substrate were obtained. The average area density of the softener for sheet-like clothing was 0.047 g / cm ² , and the average thickness was 1.2 mm. After that, the whole was folded in two and superposed so as to engage with each other as shown in FIG. 3, and then loaded into a paper box of 12 cm × 13 cm × 9 cm in height. A 6 cm × 4.5 cm rectangular hole was formed in the upper part of the box, and one sheet softening agent was taken out. A part of the next sheet softening agent was drawn out of the box. This operation could be performed continuously for 47 times. Thus, it was confirmed that the sheet could be easily taken out without putting a hand or finger in the hole. The sheet could be broken by hand, and when broken, the softener did not leak or flow out, and hardly adhered to the hand. Furthermore, when the leakage of the softening agent at the time of breakage and the outflow amount were measured by the above method, 0.01 g
Met.

Example 3 With respect to the softening bases (ix), (x), (xi) and (xii) shown in Table 2, 16% by weight of (ix)
16% by weight of (x), 18% by weight of (xi) and 18% by weight of (xii), 6% by weight of a 21 mole ethylene oxide adduct of lauryl alcohol, 3% by weight of a 50 mole ester oxide adduct of oleylamine, stearin 3% by weight of acid, 2% by weight of esterified product of 2 mol of stearic acid and 1 mol of pentaerythritol, 8% by weight of polyethylene glycol (average molecular weight: 1200), 9% by weight of glycerin, 0.001% by weight of Acid Blue 7, 0.001% by weight of Basic Yellow 36
0.001% by weight, Liquitint® Yellow LP
A dough-like composition obtained by mixing 0.001% by weight, 0.003% by weight of BHT and the balance of water (penetration hardness 0.5 kg /
cm ² ).

[0047]

[Table 2]

A roller having a basis weight of 15 g / m ² prepared according to Example 3 of JP-A-8-127919 was placed between two stainless steel rollers having the diameter of 50 mm (same as those used in Example 1). Width 15 of laminated non-woven fabric and Nippon Synthetic Chemical Industry Co., Ltd. “HISELON” (water-soluble film)
cm, and a pair of laminated substrates having a length of 25 m, and while the roller is rotating (rotational speed 1 m / min), the mixture prepared above is constantly supplied between the two laminated substrates, and 10
m sheet softening agent was obtained. The average area density of this sheet was 0.053 g / cm ² , and the average thickness was 1.3 mm. This 20 m was wound on a cardboard roll having a width of 11 cm and a diameter of 2.5 cm, and was loaded into a box with a cutter.
At this time, the sheet was of any length and could be easily torn using a metal cutting machine mounted on the top of the box, and when torn, there was little leakage or outflow of the softening agent and did not adhere to the hand. . Further, the leakage and outflow amount of the softening agent at the time of breaking were measured by the above-mentioned method, and it was 0.11 g.

[Results] As is clear from the above results,
The sheet-like laundry products of Examples 1 to 3 in which the softening agent is sandwiched between the water-soluble sheets hardly scatter the contents at the time of use or breakage, and it is easy to arbitrarily adjust the use amount. Further, since the laundry product is in the form of a sheet and has no leakage of contents, etc., a plurality of sheets are folded and loaded into the container in an alternately engaged state, or the sheet is loaded into the container in the form of a roll. It is also clear that the convenience in use is very good.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of a sheet-like laundry product of the present invention.

FIG. 2 is a schematic view showing another example of the sheet-like laundry product of the present invention.

FIG. 3 is a schematic view showing an example of the laundry product of the present invention.

[Explanation of symbols]

 1: Thin layer containing fiber softening agent 2, 2 ': water-soluble nonwoven fabric 21: Thin layer containing fiber softening agent 22, 22': water-soluble nonwoven fabric 23, 23 ': water-soluble film 31: sheet-like Laundry products 32: paper containers

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiki Nishi 1334 Minato, Wakayama City, Wakayama Prefecture, Kao Corporation (72) Inventor Shinji Nakao 1334 Minato, Wakayama City, Wakayama Prefecture, Kao Corporation

Claims (15)

[Claims] 1. A sheet-like laundry product comprising a thin layer containing a fiber softening agent and means for maintaining the thin layer. 2. The method according to claim 1, wherein the loss of the fiber softening agent from the thin layer per 200 cm ² at break is less than 0.8 g.
A sheet-like laundry product as described. 3. The sheet according to claim 1, wherein the thin layer is made of a dough having a sticky surface, and the means reduces the stickiness of the thin layer. Laundry products. 4. The sheet-like laundry according to claim 1, wherein the thin layer contains powder or particles, and the means suppresses scattering of the powder or particles from the thin layer. Product. 5. The apparatus according to claim 1, wherein said means is a water-soluble sheet.
The sheet-like laundry product according to any one of claims 4 to 4. 6. The sheet-like laundry product according to claim 5, wherein the water-soluble sheet is disposed on both sides of the thin layer. 7. The water-soluble sheet dissolves within 10 minutes in 1 liter of water at 50 ° C., within 10 minutes in 1 liter of water at 50 ° C. comprising water-soluble polymer fiber. 6. A dissolvable woven or nonwoven fabric, or a laminated sheet comprising a water-soluble film and a woven or nonwoven fabric made of a water-soluble polymer fiber and dissolved in 1 liter of water at 50 ° C. within 10 minutes. Or a sheet-like laundry product according to 6. 8. The method according to claim 1, wherein the water-soluble film or / and the water-soluble polymer fiber are polyvinyl alcohol, polyvinyl pyrrolidone, pullulan, polyacrylamide, polyacrylic acid, polymethacrylic acid, polyitaconic acid, polyethylene oxide, polyvinyl methylene ether, xanthan gum. The sheet-like laundry product according to claim 7, comprising one or more kinds selected from guar gum, collagen, carboxymethyl cellulose, hydroxypropyl cellulose, and hydroxyethyl cellulose. 9. The laminate sheet, wherein the water-soluble sheet is dissolved within 10 minutes in 1 liter of water at 50 ° C. comprising a water-soluble film and a woven or non-woven fabric made of a water-soluble polymer fiber, The sheet-like laundry product according to claim 7 or 8, wherein the thin layer and the water-soluble film are arranged so as to be in contact with each other. 10. The means is a woven or nonwoven fabric made of a water-soluble polymer fiber, a liquid component of the fiber softening agent is impregnated in the woven or nonwoven fabric, and a powder component of the fiber softening agent is 9. The sheet-like laundry product according to claim 7, which is attached to the surface of the woven or nonwoven fabric. 11. The method according to claim 1, wherein the thickness is 0.05 to 4 mm and the area density is 0.005 to 0.25 g / cm ^2.
A sheet-like laundry product according to any one of the preceding claims. 12. The sheet-like laundry product according to claim 1, wherein the thin layer contains a softening agent in a usage amount of 1/5 to 1 time. 13. The method according to claim 1, wherein the area is 9 cm ² or more.
The sheet-like laundry product according to any one of claims 12 to 12. 14. A laundry product obtained by laminating a plurality of the sheet-like laundry products according to any one of claims 1 to 13 in a staggered manner and loading them in a predetermined container. 15. The sheet-like laundry product according to claim 1, which is at least 4 cm wide and 30 cm long in a predetermined container.
A laundry product that is loaded into a roll of at least cm.