JP2002235098A - Sheet-like detergent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a sheet-like detergent easily affording high detergent effect on local stains. SOLUTION: This adhesive sheet-like detergent comprises water-soluble sheet- like supports 1 and 5 and a detergent composition 2 carried on the supports and is designed to afford an adhesive surface or adhesive points 4 on an object to be cleaned. A method for cleaning such an object by applying the above sheet-like detergent thereonto is also provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an adhesive sheet-like detergent (preferably for clothing) in which a detergent composition is supported on a water-soluble sheet-like support. Further, the present invention relates to a cleaning method using the same.

[0002]

2. Description of the Related Art Among stains on textile products, local stains such as collars, sleeves, spills, and mud stains cannot be sufficiently removed by ordinary washing or remain as stains.
For this reason, in general, collars, sleeves, stains and mud stains can be partially applied by directly applying a liquid detergent, applying a solid soap, or dissolving a powder detergent in a high concentration and immersing it. This is addressed by increasing the detergent concentration.

[0003] As a form of a cleaning agent used for partial soiling, in addition to a solid bar-like one, as described in JP-A-56-12697, a liquid detergent is used as a foam such as polypropylene, polyethylene or polyurethane. In general, it is filled in a container having a coated surface of the porous polymer formed body. However, the solid bar-shaped material has poor permeability to the object to be washed, and further has poor solubility, so that it may remain at the end of washing. In addition, although the liquid detergent has good fluidity and high permeability to an object to be washed, it is diluted immediately after being transferred to a washing tub and injected with water, and it is difficult to maintain a locally high concentration. Time and effort such as leaving it unattended and further washing with hands was required.

[0004] For this reason, there has been a demand for a cleaning agent which can easily obtain a high cleaning effect on local stains without any trouble.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a cleaning agent which can easily obtain a high cleaning effect on local stains.

[0006]

According to the present invention, there is provided a water-soluble sheet-like support, and a cleaning composition supported on the support. The present invention relates to an adhesive sheet-like cleaning agent having the same. Further, the present invention relates to a cleaning method of applying the sheet-like cleaning agent of the present invention to an object to be cleaned and cleaning the object to be cleaned.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The adhesive sheet-like detergent of the present invention comprises a water-soluble sheet-like support and a detergent composition supported on the support. The thickness of the adhesive sheet-like detergent is 0.5 to 10 m in terms of ease of handling and cleaning effect.
m is preferable, 1 to 8 mm is more preferable, and 1.5 to 5
mm is more preferred. Various embodiments of the adhesive sheet-like cleaning agent of the present invention are shown in FIG. FIG. 1 (a1) to (a4)
Has a water-soluble sheet-like support 1, a cleaning composition 2 supported on the support 1, and a release sheet 3,
FIGS. 1 (b 1) to 1 (b 3) have a water-soluble sheet-like support 5 impregnated with a cleaning composition and a release sheet 3. In FIG. 1 (a4), the cleaning composition is supported on both sides of the water-soluble sheet-like support 1. FIG. 1 (a)
In (3) and (b3), the pressure-sensitive adhesive layer 4 is formed.

[0008] By sticking the adhesive sheet-like cleaning agent of the present invention to a locally soiled portion of the object to be cleaned, the object to be cleaned can be placed in a washing tub without leaving it as it is conventionally or washing it by hand. By throwing in and washing as usual, a high washing effect can be easily obtained. This is because the pressure-sensitive adhesive sheet-like detergent gradually dissolves at the locally soiled portion in the washing step, so that the concentration of the detergent locally can be maintained high.

The adhesive sheet-like detergent of the present invention has at least one surface having an adhesive surface or an adhesive point to an object to be washed, and the adhesiveness of the sheet-like detergent of the present invention (5 cm × 5 cm) ) At 25 ° C.-65% RH,
When attached to a cotton cloth # 2003 cloth (10 cm × 10 cm) conditioned at 25 ° C.-65% RH and left quietly with the attachment surface vertical, it is preferable to adhere for 5 seconds or more, and 20 seconds or more More preferably, it is desirable not to peel off without applying external force. 5 seconds or more are preferable in terms of local detergency.

[0010] The adhesiveness is more preferably manifested by the properties of the cleaning composition carried on the water-soluble sheet-like support from the viewpoint of local detergency, but an adhesive layer is provided separately from the cleaning composition. You may make it express by doing. The pressure-sensitive adhesive layer preferably contains a water-soluble polymer as a main component. Examples of the water-soluble polymer include natural polymers such as tragacanth gum, starch, and gelatin; semi-synthetic polymers such as methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and soluble starch; and polyvinyl alcohol (hereinafter referred to as PVA). ), Polyvinylpyrrolidone, polyvinyl methacrylate, polyethylene oxide, polyethylene glycol, polyacrylic acid or salts or esters thereof,
One or more synthetic polymers such as cross-linked polyacrylic acid or esters thereof, carboxyvinyl polymers or cross-linked substances thereof, and the like can be used. The water content of the pressure-sensitive adhesive layer is preferably from 1 to 50% by weight, more preferably from 2 to 4% by weight, from the viewpoint of tackiness.
5% by weight. If necessary, a plasticizer that is liquid at room temperature may be added to the pressure-sensitive adhesive layer. Examples of such a plasticizer include polyhydric alcohols such as sorbitol and mannitol; glycerin, diglycerin, and ethylene. Glycols such as glycol, polyethylene glycol and propylene glycol; sorbitan aliphatic esters or ethylene oxide adducts thereof are preferred. Further, a filler such as borax, kaolin, aluminum silicate, and titanium dioxide may be added to the pressure-sensitive adhesive layer as needed.

<Water-soluble sheet-like support> The water-solubility of the sheet-like support is 40 points in a cylindrical 1-L beaker having an inner diameter of 105 mm because the appearance of the object to be washed at the end of washing is excellent.
1 L of distilled water at 35 ° C., total length 35 mm, maximum diameter 7.5
Stirring is performed at 550 rpm using a stirrer (mm, manufactured by Kagaku Kyoeisha, model SA-35 or the like), and the sheet-shaped support (3 cm × 3 cm, 4 sheets) is charged, and stirring is performed for 8 minutes. After continuing, the residue when passing through a sieve having an opening of 125 μm is preferably not more than 5% by weight of the charged sheet-like support, more preferably the same operation using distilled water at 10 ° C. Is less than 5% by weight, more preferably 2% by weight or less.

Examples of the sheet-like support include a water-soluble film, a water-soluble nonwoven fabric, a water-soluble woven fabric, and a water-soluble nonwoven fabric or a water-soluble woven fabric laminated with a water-soluble film.

Examples of the material of the water-soluble sheet-like support include PVA, polyvinylpyrrolidone, pullulan, polyacrylamide, polyacrylic acid or a salt thereof, polymethacrylic acid or a salt thereof, polyitaconic acid or a salt thereof, polyethylene oxide, polyvinyl Water-soluble polymer compounds such as methylene ether, xanthan gum, guar gum, collagen, carboxymethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose are exemplified. In particular, PVA is preferable from the viewpoint of solubility in cold water, and a partially saponified PVA having a degree of saponification of less than 96 mol%, or a degree of saponification of 96 mol% or more, preferably 98%, from the viewpoint of deterioration resistance.
Modified PVA that is at least mol% is more preferred. Examples of the modifying group include an anionic group, a cationic group, and a nonionic group, and an anionic group and a nonionic group are more preferable. Anionic modification is preferred in terms of productivity, and examples of monomers having an anionic group include acrylic acid, crotonic acid, maleic acid, fumaric acid, unsaturated carboxylic acids such as itaconic acid, unsaturated sulfonic acids, and esters thereof. Alternatively, an anhydride may be mentioned, but maleic acid, itaconic acid and 2-acrylamido-methylpropanesulfonic acid are particularly preferable.
Further, from the viewpoint of flexibility at low temperatures, nonionic modification is more preferable, and ethylene oxide (hereinafter, referred to as EO) modification is further preferable. The modification ratio is preferably from 0.1 to 20 mol%, preferably from 0.5 to 20 mol%, based on the total amount of monomer units in all molecules.
-15 mol% is more preferable, and 1-10 mol% is still more preferable. The content is preferably 0.1 mol% or more from the viewpoint of solubility in water, and is preferably 20 mol% or less from the viewpoint of preventing the formation of a gel-like substance and reducing the solubility when poured into water.
In terms of solubility, the weight average molecular weight of the modified PVA (hereinafter referred to as Mw)
) Is preferably 5000 to 1,000,000, and preferably 10,000 to 5,000,000 when measured by gel permeation chromatography using polyethylene glycol as a standard.
100,000 is more preferable. The water-soluble sheet-like support material contains a plasticizer in an amount of 1 to 50% by weight in order to improve processability, flexibility, hydrophilicity upon dissolution in water, blocking prevention upon storage of the material, blocking prevention upon storage, and the like. %, More preferably 2 to 40% by weight.
As the plasticizer, ethylene glycol, propylene glycol, glycerin, diglycerin, polyglycerin,
Polyhydric alcohol plasticizers such as low molecular weight polyethylene glycol (molecular weight: 600 or less) and trimethylolpropane are preferable, and glycerin is more preferable. Further, a flavoring agent, a coloring agent, a release agent, and the like can be blended or applied within a range that does not impair the purpose of the present invention. Also, workability,
In order to improve the feel when touched, the solubility, the prevention of blocking during storage of the material, the prevention of blocking during storage of the laundry composition, etc. It is preferable to provide irregularities.

Supporting on a water-soluble sheet-like support means that a layer containing a detergent composition is separately formed on at least one surface of the water-soluble sheet-like support, and / or Impregnating the cleaning composition. From the viewpoint of productivity, it is more preferable to separately form a layer containing the detergent composition on at least one surface of the water-soluble sheet-like support.

When a layer containing a detergent composition is separately formed on at least one surface of the water-soluble sheet-like support, the thickness of the water-soluble sheet-like support must be 10 in terms of mechanical strength and rapid solubility in water. To 100 μm is preferable, and 15 to 50 μm is more preferable. In this case, the water-soluble sheet-like support is preferably a water-soluble film, or a water-soluble nonwoven fabric or a water-soluble woven fabric laminated with a water-soluble film, and more preferably a water-soluble film in terms of productivity.

When the cleaning composition is impregnated into a water-soluble sheet-like support, the water-soluble sheet-like support is made of a water-soluble nonwoven fabric, a water-soluble woven fabric, or a water-soluble nonwoven fabric or a water-soluble woven fabric, and a water-soluble film. Laminated ones are preferable, and water-soluble nonwoven fabrics and water-soluble woven fabrics are more preferable in terms of productivity.

For the purpose of improving convenience such as protection of the adhesive sheet-like cleaning agent and improvement in handling properties, a release sheet can be laminated on the adhesive surface. The material of the release sheet is not particularly limited as long as it has a release property with respect to the adhesive surface, but a film made of polyethylene, polyethylene terephthalate, polypropylene, polystyrene, polyvinyl chloride, PVA, Saran, etc., or a polyethylene coat Examples include paper such as high-quality paper and polyolefin-coated glassine paper, and materials obtained by surface-treating an aluminum thin film of these resins with silicon. Among these, a film made of a resin such as polyethylene or Saran is preferable. The thickness of the release sheet is preferably from 1 to 500 μm, and from the viewpoint of ease of use and economy, from 5 to 200 μm, particularly from 20 to 200 μm.
100 μm is preferred.

<Detergent Composition> The detergent composition used in the adhesive sheet-like detergent of the present invention has an intrusion stress of 0.01 to 10 kg / cm ² before being loaded, and is easy to handle. It is preferred in that respect. More preferably 0.02-8k
g / cm ² , more preferably 0.05 to 6 kg / cm ^2.
cm ² . The penetration stress is such that a disc having an area of 1 cm ² is brought into contact with the surface of the detergent composition kept at 25 ° C., and the disc enters the interior of the detergent composition at 2 cm at a penetration speed of 30 cm / min.
It is obtained by measuring the stress when entering.

The detergent composition contains a surfactant in an amount of 10 to 60.
% By weight, preferably 15 to 55% by weight, more preferably 20 to 50% by weight, still more preferably 25 to 48% by weight,
Particularly preferably, the content is 35 to 45% by weight. It is not less than 10% by weight in terms of cleaning performance, and not more than 60% by weight in terms of solubility.

Examples of the surfactant include an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, and a cationic surfactant.

Examples of the anionic surfactant include a sulfate of a higher alcohol, a sulfate of an ethoxylated higher alcohol, an alkylbenzene sulfonate,
Examples thereof include a paraffin sulfonate, an α-olefin sulfonate, an α-sulfofatty acid salt or an ester salt thereof, and a fatty acid salt. In particular, when the carbon number of the alkyl chain is 1
A linear alkylbenzene sulfonate having 0 to 18 (preferably 12 to 14) and an alkyl ester salt of α-sulfofatty acid having 10 to 20 carbon atoms are preferable. Examples of the counter ion include an alkali metal, an alkaline earth metal, ammonia, and an alkanolamine. From the viewpoint of adjusting the dissolution rate, it is also preferable to use potassium ions in combination. The potassium ion in all the counter ions is preferably at least 5% by weight, more preferably at least 20% by weight, particularly preferably at least 40% by weight.

Examples of the nonionic surfactant include an EO adduct of a higher alcohol or an EO / propylene oxide (hereinafter referred to as “PO”) adduct, a fatty acid alkanolamide, an alkyl polyglycoside and the like. In particular, an adduct of an alcohol having 10 to 16 carbon atoms with 1 to 10 moles of EO is preferred in terms of removing sebum stains, hard water resistance, biodegradability, and compatibility with a linear alkylbenzene sulfonate.

Examples of the cationic surfactant include alkyltrimethylammonium salts and the like, and examples of the amphoteric surfactant include carbobetaine-type and sulfobetaine-type surfactants.

The detergent composition comprises a nonionic surfactant and an anionic surfactant in terms of slurry physical properties and solubility.
Nonionic surfactant / anionic surfactant = 2/1 to 1
5/1, further 2/1 to 10/1, even more 2/1 to 5 /
It is preferable that the content be contained in a weight ratio of 1, especially 2/1 to 4/1.

Other components of the detergent composition include builders, alkaline agents, water-soluble polymers, and builder agents known in the field of detergents.
It may contain a re-staining agent, a softening agent, a bleach, a bleach activator, an optical brightener, a foam control agent, an enzyme, a fragrance and the like.

Examples of the inorganic builder include crystalline aluminosilicate, amorphous aluminosilicate, crystalline sodium silicate,
Examples thereof include sodium tripolyphosphate and sodium pyrophosphate, and a crystalline aluminosilicate is more preferable from the viewpoint of environmental impact and cleaning performance. From the viewpoint of cleaning performance, 10 to 50% by weight is preferable, and 15 to 40% by weight is more preferable.

Examples of the alkaline agent include carbonates, silicates, amines (such as alkylamines and alkanolamines), and more preferably carbonates and silicates. From the viewpoint of cleaning performance, 5 to 50% by weight is preferable, and 10 to 40% by weight is more preferable.

Examples of the water-soluble polymer include carboxylic acid polymers, carboxymethyl cellulose, soluble starch, and saccharides. Among them, Mw is 1 in terms of sequestering ability of metal ions, dispersing ability of solid dirt / particle dirt and prevention of re-contamination.
A carboxylic acid-based polymer of 000 to 100,000 is preferred. Particularly, a salt of an acrylic acid-maleic acid copolymer and a polyacrylate are preferred. Here, the salt includes a sodium salt, a potassium salt, and an ammonium salt. From the viewpoint of cleaning performance, it is preferably 0.5 to 20% by weight, more preferably 1 to 10% by weight.

The detergent composition may contain builder particles (hereinafter referred to as builder particles) containing a poorly water-soluble inorganic substance and at least one water-soluble component selected from a water-soluble polymer and a water-soluble salt. preferable. The average particle diameter of the builder particles is preferably from 50 to 1000 μm, more preferably from 100 to 800 μm, from the viewpoint of solubility.
６００600 μm is more preferred. The average particle size is JIS Z
After vibrating for 5 minutes using an 8801 standard sieve (opening: 2000 to 125 μm), the median diameter is calculated from the weight fraction according to the sieve size.

Further, the builder particles are used in terms of cleaning performance.
In a 1 L beaker (a cylindrical shape having an inner diameter of 105 mm and a height of 150 mm, for example, a 1 L beaker of Iwaki Glass Co., Ltd.), 0.5 g of the component (a) is added to 1 L of water at 10 ° C., and a stirrer (length 35 mm, diameter: 8 mm) and 1 at 800 rpm.
After stirring for 0 minute, the amount of the residue on the sieve when sieving with a 200 mesh sieve is preferably less than 0.025 g, and the time for the residue to be less than 0.025 g is within 7 minutes. Is more preferable, and the time within 5 minutes is still more preferable.

The detergent composition comprises builder particles of 10 to 5
The content is preferably 0% by weight, more preferably 20 to 48% by weight, particularly preferably 30 to 45% by weight.

The content of the poorly water-soluble inorganic substance in 100% by weight of the builder particles is preferably 20 to 90% by weight, more preferably 30 to 75% by weight, and particularly preferably 40 to 70% by weight. The content of the water-soluble polymer is preferably 2 to 30% by weight, more preferably 3 to 20% by weight, particularly preferably 5 to 20% by weight. The water-soluble salts are preferably 5-
It is 78% by weight, more preferably 10 to 70% by weight, particularly preferably 20 to 60% by weight.

As the poorly water-soluble inorganic substance, those having an average primary particle diameter of 0.1 to 20 μm are preferred. As the poorly water-soluble inorganic substance, an inorganic substance having a solubility in water of 100 g at 25 ° C. of less than 0.5 g, for example, a crystalline or amorphous aluminosilicate, a silicon dioxide, a hydrated silicate compound, a clay compound such as perlite, bentonite, or the like And those selected from: Of these, crystalline aluminosilicates are preferred in terms of sequestering ability and oil absorbing ability of a surfactant.

Examples of the water-soluble polymer include a carboxylic acid polymer, carboxymethyl cellulose, soluble starch, and saccharides. Among them, a carboxylic acid-based polymer having a Mw of several thousands to 100,000 is preferable in terms of sequestering ability of metal ions, dispersing ability of solid dirt / particle dirt, and ability of preventing re-contamination. In particular,
Preference is given to salts of acrylic acid-maleic acid copolymers and polyacrylates. Here, the salt includes a sodium salt, a potassium salt, and an ammonium salt.

As the water-soluble salts, 100 g of water at 25 ° C.
Having a solubility of at least 0.5 g and a molecular weight of less than 1,000, for example, carbonate, hydrogen carbonate, sulfate,
Alkali metal salts such as sulfites, hydrogen sulfates, hydrochlorides or phosphates, water-soluble inorganic salts such as ammonium salts or amine salts, and low molecular weight water-soluble organic acids such as citrates and fumarate And those selected from salts. The addition of the water-soluble salt is more preferable because the heat of hydration and the heat of dissolution generated by the reaction between the water-soluble salt and water can promote the solubility of the particles.

The builder particles can contain a surfactant, a reducing agent (such as a sulfite), a fluorescent brightener, a foam inhibitor (such as a fatty acid salt), and the like. As the surfactant, an anionic surfactant is particularly preferred.

The structure of the builder particles is more preferably a structure in which the water-soluble polymer and / or water-soluble salts are localized more in the vicinity of the surface than in the inside of the builder particles. The builder particles exhibiting such uneven distribution exhibit a dissolving behavior in which the water-soluble component near the surface is rapidly dissolved in water, thereby promoting disintegration from the surface. Therefore, high-speed solubility is realized by the builder particles, and a cleaning composition having excellent cleaning performance can be obtained. Confirmation of the uneven distribution of the structure of the builder particles can be performed, for example, by using a method (FT-IR / PAS) using Fourier transform infrared spectroscopy (FT-IR) or photoacoustic spectroscopy (PAS) in combination. .
This is APPLIED SPECTROSCOPY vol.47, 1311-1316 (19
As described in 93), this is a method of analyzing the distribution state of a substance in the depth direction from the particle surface, whereby uneven distribution can be confirmed.

Such builder particles can be prepared, for example, as follows. First, a slurry containing components constituting builder particles (water content is preferably 30
-80% by weight, more preferably 40-70% by weight, even more preferably 45-65% by weight). Next, the slurry is subjected to spray drying to obtain builder particles. By the spray drying, the water-soluble component of the components constituting the builder particles moves to the surface of the builder particles as the water evaporates. Therefore, the builder particles exhibit uneven distribution. In particular, the slurry preferably contains an anionic surfactant, more preferably 0.1 to 3% by weight in the builder particles.

The builder particles preferably have a carrying capacity of 20 ml / 100 g or more in view of storage stability.
1/100 g or more is more preferable. Here, the carrying capacity is
100 g of a sample is placed in a cylindrical mixing tank having an inner diameter of about 5 cm × about 15 cm having a stirring blade therein, and linseed oil is charged at 25 ° C. at a rate of about 10 ml / min at 25 ° C. while stirring at 350 rpm. The amount of linseed oil input when it becomes

The water content in the builder particles is preferably 10% by weight or less, more preferably 0.1 to 7% by weight, still more preferably 0.1 to 5% by weight, and more preferably 0.5 to 5% by weight from the viewpoint of productivity.
-5% by weight is particularly preferred. The water content is JIS K33
62: 1998 Measured by the method specified in the heating weight loss method.

Further, the detergent composition is prepared by a hydration reaction.
It is preferable to contain a heating substance that generates heat in terms of cleaning performance.
New Further, the exothermic substance has the same weight in water at a water temperature of 25 ° C.
When mixing exothermic substances, raise the water temperature to 2 ° C or higher, and 5 ° C or lower.
In addition, substances that raise
No. For example, various inorganic salts, activated zeolites, alcohol
(Ethanol, propylene alcohol, glycerin
, Polyethylene glycol and the like). Inside
Also preferred are inorganic salts and activated zeolites. Inorganic
Salts and activated zeolites may be anhydrous or hydrated.
No. Specifically, as the inorganic salt, for example, magnesium sulfate
(MgSO4_Four, MgSO_Four・ H_TwoO, MgSO_Four・ 4H_Two
O), aluminum sulfate (Al_Two(SO_Four)_Three), Calcium sulfate
Cium (CaSO _Four, CaSO_Four・ 1 / 2H_TwoO, CaS
O_Four・ 2H_TwoO) and the like, calcium chloride (CaCl
_Two, CaCl_Two・ H_TwoO, CaCl_Two・ 2H_TwoO), chloride
Gnesium (MgCl_Two, MgCl_Two・ 2H_TwoO, MgC
l_Two・ 4H_TwoO), aluminum chloride (AlCl_Three, Al
Cl_Three・ 6H_TwoO) and other chlorides, other dried alum,
Calcium oxide, sodium carbonate, potassium carbonate, phosphorus
And sodium hydrogen oxyoxide. Activated zeolite
Although there is no particular limitation, N
a_TwoO ・ Al_TwoO_Three・ 2SiO_Two・ ZH_TwoO (Z is an arbitrary number
Is shown. ), Zeolite A-3, A-4, A-
5 is preferred. Special treatments such as ion exchange and neutralization
Zeolites may be used. In addition, the emission of these heating substances
The amount of heat is specific to the substance, and generally the same inorganic
The smaller the amount of crystallization water, the greater the calorific value. In the present invention,
One or more kinds of the exothermic substances are used. Content of these pyrogens
Is preferably 1 to 50% by weight, particularly preferably 5 to 40% by weight.
New

[0042]

EXAMPLES <Water-soluble sheet-like support> (Water-soluble sheet-like support 1) Modified with maleic acid (modification ratio 2)
Mol%) PVA (99 mol% saponification degree, Mw about 80,000) 1
00 parts by weight, 550 parts by weight of water, 10 parts by weight of glycerin,
Emulgen 120 (nonionic surfactant, Kao Corporation)
0.2 parts by weight), 0.5 parts by weight of a blended flavor, and 2 parts by weight of titanium dioxide (average particle size: 0.3 μm) were dispersed and defoamed.
Dry with hot air at 0 ° C (drying residence time: 2 minutes), water content 7
By weight%, a long film having a thickness of 30 μm was obtained.

Next, a 40 mesh silk embossing (roller 120 ° C., linear pressure 30 kg / cm) was performed.

(Water-soluble sheet-like support 2) After vinyl acetate and polyoxyethylene (average number of moles of EO added: 7) monoallyl ether were polymerized, a saponification reaction was carried out to obtain polyoxyethylene (average number of moles of EO added: 7). ) A monoallyl ether / vinyl acetate copolymer was obtained. As the copolymer, 0.5 mol% of unsaponified vinyl acetate and polyoxyethylene (EO) were used.
Average number of moles added 7) Monoallyl ether is 4 mol%, M
w was about 20,000.

100 parts by weight of the copolymer, 2 parts by weight of titanium dioxide (average particle size: 0.3 μm), 550 parts by weight of water, 10 parts by weight of glycerin, Emulgen 120 (nonionic surfactant, manufactured by Kao Corporation) 0.2 parts by weight, blended flavor 0.5
Parts by weight, and after defoaming, while being cast on a drum at 120 ° C., dried with hot air at 140 ° C. (drying residence time: 2 minutes) to form a long film having a water content of 6% by weight and a film thickness of 30 μm. Obtained.

Next, a 40 mesh silk embossing (roller 120 ° C., linear pressure 30 kg / cm) was performed.

(Water-soluble sheet-like support 3) Maleic acid-modified (modification ratio 2 mol%) PVA (degree of saponification 99 mol%, M
w about 80,000) 100 parts by weight, water 550 parts by weight, glycerin 10 parts by weight, Emulgen 120 (a nonionic surfactant,
After dispersing and defoaming 0.2 parts by weight of Kao Corporation and 0.5 parts by weight of the compounded flavor, it was dried with hot air at 140 ° C (drying time: 2 minutes) while casting on a 120 ° C drum. A long film having a water content of 7% by weight and a thickness of 30 μm was obtained.

Next, a degree of saponification of 88 mol% and a degree of polymerization of 170
0 PVA fiber is crimped and cut to 2 denier x 51 m
m is opened and the basis weight is 20 g / m ^2.
And the web.

The obtained web was superimposed on a long film having a thickness of 30 μm, and the compression area ratio was 25%.
An embossing roller having a deformed square pattern of mm was set at 120 ° C., and thermocompression-bonded at a linear pressure of 30 kg / cm to form a composite. The grammage was 46 g / m ² .

(Water-soluble sheet-like support 4) Maleic acid-modified (modification ratio: 2 mol%) PVA (degree of saponification: 99 mol%, M
w80,000) to obtain a nonwoven fabric having a fiber thickness of 15 μm, a thickness of 280 μm, and a basis weight of 50 g / m ² by a conventional method.

<Detergent Composition> The components shown in Table 1 were charged into a universal mixing stirrer (Dalton Co., Ltd., model 5DM-03-r), and the temperature was adjusted to 25 ° C. until a uniform paste-like detergent composition was obtained. Stirred. The penetration stress of the cleaning composition was measured by the following method. Table 1 shows the results.

[Ingression stress] As a measuring device, a rheometer was used.
-(FUDOH RT-2010J-CW)
Adapter on the surface of paste-like detergent composition kept at 5 ° C
ー (Bottom area 1cm ^TwoCircle), and the adapter
2 cm at an entry speed of 30 cm / min into the interior of the cleaning composition
The stress when entering was measured.

[0053]

[Table 1]

Builder particles: 60 ° C. depending on various raw materials
A slurry having a water content of 50% by weight was prepared and spray-dried to obtain a 4A-type zeolite (average particle size: 3 μm) 60% by weight,
25% by weight of sodium carbonate, 5% by weight of sodium sulfate,
8% by weight of sodium polyacrylate (Mw 10,000), water 2
% By weight of builder particles having an average particle diameter of 300 μm Nonionic surfactant 1: linear first having 10 to 14 carbon atoms
Non-ionic surfactant 2: straight-chain primary having 10 to 14 carbon atoms.
Non-ionic surfactant 3: straight-chain primary having 10 to 14 carbon atoms.
5 mol of EO on average, 2 mol of PO on average,
Non-ionic surfactant 4: straight-chain first having 10 to 14 carbon atoms.
LAS-Na: sodium linear alkyl benzene sulfonate having 10 to 14 carbon atoms LAS-Na: linear alkyl benzene sulfonate having 10 to 14 carbon atoms LAS-Na: linear alkyl benzene sulfonate having 10 to 14 carbon atoms Potassium sulfonate LAS: linear alkylbenzene sulfonic acid having 10 to 14 carbon atoms AS-Na: linear alkyl sulfate sodium salt having 10 to 13 carbon atoms PEG: polyethylene glycol, Mw 8000 Enzyme: cellulase K No. 63-264699) and lipolase 100T (manufactured by Novo) in a weight ratio of 3: 1.

Examples 1 to 7 The above water-soluble sheet-like support and the cleaning composition shown in Table 1 were used in combination shown in Table 2, and the water-soluble sheet-like support was coated with a cleaning composition having a thickness of about 2 mm. And the surface of the cleaning composition, which is the adhesive surface, was covered with a release sheet (polyethylene film whose surface was treated with silicon) to obtain a sheet-like cleaning agent. The detergency of the obtained sheet-like detergent was evaluated by the following method. Table 2 shows the results. The water-soluble sheet supports 1 to 4 each had a residue of 5% by weight or less as measured by the above method, and had a residue of 5% when the same operation was performed using distilled water at 10 ° C. It showed a water solubility of less than 10% by weight. In addition, none of the sheet-like cleaning agents peeled off without applying an external force when the adhesion time measured by the above method was 5 seconds or more.

[Evaluation of Detergency] Collar dirt test piece: A collar part of a cotton / polyester blended shirt worn for 3 days was cut and collected.
The collar pieces of the second group from the heaviest stain were used for cleaning evaluation.

Washing condition: 40 L of tap water was put into a washing tub of an automatic two-tank washing machine (Toshiba Ginga 3.6).
Put 4 kg of cotton underwear and 0.6 kg of cotton / polyester blended shirt. Further JIS
The indicator detergent for determining detergency described in K3362-1990 is introduced so as to have a predetermined concentration. Prepare one piece of 5 pieces of the collar for cleaning evaluation sewn on a 30 × 30 cm cotton cloth,
The sheet-like cleaning agent of the example is attached to a soiled portion. Five pieces of the collar pieces thus obtained are put into a washing tub and are usually washed for 10 minutes. After that, dehydrate for 1 minute and rinse with running water at a flow rate of 15 L / min for 8 minutes. After that, it is dehydrated for 5 minutes and air-dried indoors.

Detergency criteria: A sheet was cleaned and dried in the same manner except that the same weight was previously dissolved without sticking the sheet-shaped detergent to the soiled area. Judgment was made based on the following criteria. ；: Stain removal is clearly superior to blank △: Stain removal is slightly better than blank ×: Stain removal is comparable to blank

[0059]

[Table 2]

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an example of an embodiment of the present invention.

[Explanation of symbols]

 1: water-soluble sheet support 2: cleaning composition 3: release sheet 4: adhesive layer 5: water-soluble sheet support impregnated with the cleaning composition

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Claims (6)

[Claims] 1. An adhesive sheet-like detergent comprising a water-soluble sheet-like support and a detergent composition supported on the support, and having an adhesive surface or an adhesive point on an object to be washed. 2. The sheet-like detergent according to claim 1, wherein a layer containing a detergent composition is formed on at least one surface of the sheet-like support. 3. The sheet-like cleaning agent according to claim 1, wherein the sheet-like support is impregnated with a cleaning composition. 4. The sheet-like detergent according to any one of claims 1 to 3, wherein the penetration stress (measurement method is described below) of the detergent composition before being carried is 0.01 to 10 kg / cm ² . <Measurement Method of Penetration Stress> A disk having an area of 1 cm ² was brought into contact with the surface of the cleaning composition kept at 25 ° C., and the disk penetrated 2 cm into the cleaning composition at a penetration speed of 30 cm / min. Measure the stress. 5. The sheet-like cleaning agent according to claim 1, further comprising a release sheet on at least one surface. 6. A cleaning method of applying the sheet-like cleaning agent according to claim 1 to an object to be cleaned and cleaning the object to be cleaned.