WO2017105131A1 - Laundry sheet comprising functional granules - Google Patents

Abstract

The present invention provides a laundry sheet wherein any one or more ingredients selected from the group consisting of a builder, an enzyme, a bleaching agent, and a bleaching activator are comprised as granules in a laundry film produced using a laundry detergent ingredient and a film-forming water-soluble polymer. The laundry sheet according to the present invention completely dissolves in water and thus does not need to be removed after laundering. Further, the laundry sheet according to the present invention has excellent cleaning performance, is convenient to use, and has excellent storage stability.

Description

Laundry sheet containing functional granules

This application claims priority based on Korean Application No. 10-2015-0180978, filed December 17, 2015, and Korean Application No. 10-2016-0067653, filed May 31, 2016, and the specification of the application. And all contents disclosed in the drawings are incorporated in this application.

The present invention relates to a laundry sheet and a method of manufacturing the same. In particular, the present invention relates to a laundry sheet and a method of manufacturing the same, which can further enhance and stabilize the effects of the ingredients included in the laundry sheet.

Currently, the polymer film is widely used not only in industrial fields such as fine chemicals and electronic materials, but also in household goods such as personal care products such as pharmaceuticals and cosmetics, and household goods. Examples of the use of a polymer film in medicine or cosmetics include a poultice sheet or an adhesive skin-coated sheet, in which a drug is laminated together with a water-insoluble polymer film on a substrate, wherein the polymer film forms a matrix. Sustained release properties. In addition, in the household goods, the polymer film is generally used as a packaging material to facilitate packaging by fractional packaging of specific substances and active ingredients. For example, a polymer film is used as a material for fractionally packaging a detergent composition such as powdery detergent and liquid detergent. In Korean Patent Laid-Open No. 10-1999-0030414, the standard amount of polyvinyl alcohol film, gelatin film, starch film, and cellulose film with excellent water solubility is used to protect the water quality by preventing scattering of powder detergent and inducing proper use amount. I use it as a bag. U.S. Patent No. 4,605,509, Japanese Laid-Open Patent Publication No. 58-135794, and Korean Laid-Open Patent Publication No. 10-2004-0676668 disclose techniques for packaging liquid detergents and fabric softeners with water-soluble films.

However, in case of fractional packaging using water-soluble polymer films, the sealing is broken during storage or transportation of the fractionated product, and the leakage of contents occurs, and the storage stability of the product is very deteriorated. It became. In addition, the water-soluble film used as a packaging material is designed to have stability against the moisture in the air and durability of the contents, but it takes a considerable time from the low temperature to dissolution, so that the residue of the film is not completely dissolved. The phenomenon occurred.

In order to solve this problem, Korean Laid-Open Patent Publication No. 10-2013-0124261 provides a laundry sheet in which a film is formed after incorporating an active ingredient for washing such as a detergent into a water-soluble polymer film-forming composition. However, when the solvent is solidified by removing the solvent from a solution containing a film-forming water-soluble polymer, an active ingredient for washing and water, the enzyme or bleach component among the active ingredients included in the laundry sheet is activated in water during manufacture. There is a problem that the stability is lowered and the phenomenon that does not express the washing power effectively occurred.

The problem to be solved by the present invention is to provide a laundry sheet and a method of manufacturing the same that can effectively exert the effects of any one or more components selected from the group consisting of builders, enzymes, bleach and bleach activator among the active ingredients for washing. will be.

In order to solve the above problems, the present invention is a laundry sheet manufactured using a laundry detergent component and a film-forming water-soluble polymer, the builder selected from the group consisting of builders, enzymes, bleach and bleach activator It provides a laundry sheet characterized in that at least one component is contained in a granule.

In the present invention, any one or more components selected from the group consisting of a builder, an enzyme, a bleach and a bleach activator may be a component that is activated with water to express an effect.

Hereinafter, the present invention will be described in more detail.

The present invention is a laundry sheet manufactured using a laundry film prepared by removing the solvent and solidifying the solution in a solution containing a film-forming water-soluble polymer and a solvent by drying or the like. The active ingredient for washing in an undissolved form is included in the final production form of the laundry sheet to provide a laundry sheet in which the active ingredient for washing in granules is distributed in the sheet. The laundry sheet may have a solidified shape while maintaining a constant shape.

The present inventors have completed the present invention in order to solve the problem that the conventional active ingredient for washing is activated during the manufacture of the laundry sheet, it was difficult to exhibit the full effect in actual use. It was confirmed that the washing effect is more excellent when the washing active ingredient is contained in the form of granules which are not dissolved in the sheet for the prepared washing sheet.

Definition of Terms

The term "film" as used herein may be understood to mean a thin, flexible membrane or layer. The thickness is not particularly limited. The form of the film is not particularly limited.

The term “laundry film” as used herein may be understood to include two or more of i) laundry detergent components, ii) laundry flexible components, iii) flavors or iv) within these films. Hereinafter, the laundry detergent component may be understood to include, in addition to the laundry detergent component, a laundry flexible component, a perfume, or a mixture thereof.

The laundry film may be prepared as a solution formed by mixing a water-soluble polymer for film formation and a laundry detergent component, but is not limited thereto. All forms in which the laundry detergent component is included in the film may be included in the above range. The thickness may be the same as the film, and may be thicker or thinner than the thickness of the film. The form of the washing film is not particularly limited.

The "film" and "washing film" may be formed by completely drying a solution for producing a film or laundry film, or the solution may be in a semi-dried state. The semi-dry state of the film may mean a state in which the film maintains the shape of the film while containing some moisture in the film. For example, it may mean a state in which the moisture of the solution for the film or the laundry film is evaporated at least 70%, preferably at least 80%, even more preferably at least 90%.

As used herein, the term “sheet” may mean that an effective ingredient for washing is distributed on both sides and / or one side of the film or the laundry film in order to achieve the object of the present invention. For example, the laundry active ingredient may include any one or more components selected from the group consisting of builders, enzymes, bleaches and bleach activators. The washing active ingredient may mean that it is preferably distributed in an undissolved state. In other words, the sheets used herein are distinguished from the films or laundry films and used herein. The sheet of the present invention may include one washing film, or two or more films may be provided in an overlapped form. When the sheet of the present invention comprises two or more films, at least one film is a film for washing. When the sheet is provided to the consumer as a product, the sheet may be processed and provided, and the form provided to the consumer is not particularly limited.

As used herein, the term "distribution" refers to a group of specific laundry active ingredients (eg, builders, enzymes, bleaches and bleach activators) in the form of granules on thin films in which film forming water-soluble polymers have a constant tensile strength. Any one or more components selected from the above means a regular or irregular mixture.

Detailed description of the invention

Through one embodiment of the present invention, any one or more components selected from the group consisting of builders, enzymes, bleach and bleach activator granules in the laundry film prepared using a laundry detergent component and a film-forming water-soluble polymer It provides a laundry sheet characterized in that it is included.

Washing sheet according to an embodiment of the present invention,

(S1) dissolving a film-forming water-soluble polymer and a laundry detergent component to prepare a solution for preparing a laundry film;

(S2) forming a laundry film with the solution prepared in step (S1); And

(S3) may be prepared by adding any one or more components selected from the group consisting of a builder, an enzyme, a bleach and a bleach activator in an undissolved form to the laundry film prepared in the step (S2). have.

In the step (S1), the film-forming water-soluble polymer is released from the polymer chain aggregated into agglomerates, and in the step (S3), the active ingredient for washing is not dissolved between the polymer chains, for example, builders, enzymes, bleaches and bleaching agents. At least one component selected from the group consisting of activators is distributed.

At least one component selected from the group consisting of a builder, an enzyme, a bleach and a bleach activator of the step (S3) is added in an 'undissolved state', and the term 'undissolved state' means that the component is 100 % Is a term that includes not only not all dissolved but also partially dissolved. The 'partially soluble' is 10% or less, 9% or less, 8% or less, 7% or less, 6% or less, 5% or less, 4% or less, 3% or less, 2% or less, or 1% or less of the components. Means to dissolve, preferably 5% or less.

The present inventors added at least one component selected from the group consisting of the builder, the enzyme, the bleach and the bleach activator in the form of granules in order to add in an undissolved state.

In addition, the step (S2) is a step of forming a washing film using the solution of the (S1) step. One or more components selected from the group consisting of a builder, an enzyme, a bleach and a bleach activator may be added to the laundry film in an undissolved form, for example, in the form of granules. The granules are not limited to any form if included in undissolved form.

In another embodiment of the present invention, the laundry sheet may be prepared further comprising the step of further stacking the laundry film prepared in the step (S2). In step (S3), one or more components selected from the group consisting of builders, enzymes, bleaches, and bleach activators are distributed on one or both sides of the film, and then the washing film is further added. Laminating may be included. The further laminated laundry film may be replaced with a film.

The inventors of the present invention, if the granules containing the laundry active ingredient is not completely contained within the sheet and stays on the surface of the sheet, the granule particles are dropped from the sheet during use, storage and transport, which may impair the functionality of the laundry sheet. It was confirmed for the first time that there is. In addition, when the functional granules are a component that may cause irritation due to direct skin contact, it was also confirmed that a part of the user's body may be exposed thereto. In order to prevent this may further comprise the step of further stacking a film or laundry film to the laundry sheet of the present invention.

Specifically, (S4) may further comprise the step of preparing and preparing a film with a film-forming water-soluble polymer. The film prepared in the step (S4) may use the same film-forming water-soluble polymer as the film of the (S2) step, or may use a different kind of film-forming water-soluble polymer. The film of the step (S4) may include a detergent component for washing, it may be provided as a film of no form.

(S5) The film (or washing film) of the step (S4) and any one or more components selected from the group consisting of builders, enzymes, bleach and bleach activator of the step (S3) is added in an undissolved form The method may further include contacting the film.

In this case, in step (S3), any one or more components selected from the group consisting of a builder, an enzyme, a bleach and a bleach activator on which a film in which a component in an undissolved form (or a washing film) is referred to as a first film The new film (or laundry film) added to the first film may be referred to as a second film.

The film added in the step (S5) may preferably have the same area as the film prepared in the step (S2), but the size is not limited.

In the step (S5) in the step of closely contacting the film, two sheets of film may be stacked on top of each other, or may be laminated and then bonded. Adhesion may refer to a form in which two films are attached to each other, and may be attached using an adhesive or heat or ultrasonic waves, but the method of attaching the film is not particularly limited. The film and the method of attaching the film are particularly limited, provided that the film can be brought into close contact with the film so that any one or more components selected from the group consisting of builders, enzymes, bleaches and bleach activators are in an undissolved form. It doesn't work.

One embodiment of the present invention provides a laundry sheet manufactured by the method for manufacturing a laundry sheet of the present invention.

In another embodiment of the present invention, the laundry sheet may be manufactured so that three films (or laundry films) are stacked and granular components are present in an undissolved form between the film and the film. For example, it may be provided in the form of a laundry sheet shown in FIG.

Preferably, the manufacturing method may include a drying step, the reaction conditions of the drying step depends on the process conditions, the temperature of the drying furnace is 40 to 120 ℃, the drying time is 5 to 30 minutes, the drying speed is 1 to 10 m It may be / min, preferably the temperature of the drying furnace is 60 to 110 ℃, drying time is 5 to 20 minutes, drying rate may be 1 to 10 m / min.

Preferably, in the present invention, when at least one component selected from the group consisting of builders, enzymes, bleaches and bleach activators is added to granules, the film (or laundry film) may not be dissolved in the film (or laundry film). It is necessary to limit the water content of the film) to a predetermined level or less.

The moisture content is not limited thereto, but may preferably be 30% by weight or less based on the total weight of the film (or laundry film).

Thus, any one or more components selected from the group consisting of builders, enzymes, bleaches and bleach activators are added as granules, which granules are not dissolved after preparation of the film (or laundry film) before drying, during drying or It can be added at all stages after drying.

The film-forming water-soluble polymer used in the laundry sheet according to the present invention may be selected from one or more of natural, semi-synthetic, synthetic polymers.

Natural polymers include gelatin, pectin, dextran, hyaluronic acid or salts thereof, collagen, agar, gum arabic, residue rubber, acacia rubber, gums such as karaya rubber, toragan rubber, guar rubber, carrageic acid, Alginic acid, sodium alginate and the like can be used.

In addition, the semisynthetic polymer may be methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, sodium carboxy methyl cellulose, soluble starch, dextrin, Dextrine), Carboxy methyl starch, Dialdehyde starch and the like can be used.

Synthetic polymers include polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl methacrylate, poly acrylic acid and salts thereof, polyethylene oxide, Well-known general purpose synthetic polymers such as carboxyl-containing acrylic resins, carboxyl-containing polyester resins, water-soluble polyamides, water-soluble polyurethanes and maltodextrins, and polydextrose The water-soluble synthetic polymer produced using the radical polymerizable monomer can be selected. As the polymer synthesized from the radical polymerizable monomer, a single polymer of an ionic monomer and a nonionic monomer may be used, and a copolymer thereof may be used in some cases.

Preferred examples of the film-forming water-soluble polymer are polyvinyl alcohol (Polyvinyl alcohol, PVA), polyvinyl alcohol has a saponification degree of 75 to 95% to ensure solubility, it is preferable that the average degree of polymerization is 100 to 3000. If the saponification degree is less than 75% or more than 95%, the solubility is low so that it is insoluble in water. In addition, when the average degree of polymerization is less than 100, the molecular weight is too low, film formation is not easy, and physical properties such as tensile strength of the film is not good. If the average polymerization degree is more than 3000, the molecular weight is too high, solubility in water after film formation is poor.

The film-forming water-soluble polymer may be included in 5 to 80% by weight relative to the total weight of the film (or laundry film) after drying, preferably 10 to 60% by weight, more preferably 20 to 50% by weight. When the content of the water-soluble polymer is lower than 5% by weight, the tensile strength of the laundry sheet is too weak to form a film (or laundry film), and when the content of the water-soluble polymer is higher than 80% by weight, the content of the active ingredient is relatively low. There is a problem that the function is degraded, or the amount of water-soluble polymer used for the use of a certain amount of the active ingredient increases the economic cost increases.

On the other hand, the 'water solubility' of the film-forming water-soluble polymer in the laundry sheet according to the present invention can be defined by the following measurement conditions.

An amount of film (5 g) made of a film-forming polymer was added to 500 mL of water, stirred on a magnetic stirrer set at a speed of 500 rpm for 10 minutes, and the prepared film solution was filtered through a 10 μm maximum pore filter paper. Dry the water from the collected filtrate to determine the weight of the residual material. At this time, when the weight is 70% or more, preferably 80% or more, more preferably 90% or more with respect to the weight of the initial film is defined as a film-forming water-soluble polymer.

Film forming water dispersible polymers also belong to the category of film forming water soluble polymers in the present invention.

The meaning of the term 'water dispersibility' in the present specification is as follows. An amount of film (5 g) was added to 500 mL of water, stirred on a magnetic stirrer set at a speed of 500 rpm for 10 minutes, the film solution was filtered through a filter of 100 μm pores, and then the filtered filter was dried, followed by weight change. Measure At this time, when the weight change is 30% or less, preferably 20% or less, and more preferably 10% or less with respect to the weight of the initial film, it is defined as a water dispersible film forming polymer.

In addition, although the film-forming water-soluble polymer used in the present invention has a film-forming property that can form a film matrix, the entangled polymer chains of the film-forming water-soluble polymer in the washing sheet are loosened again by a solvent during washing. do. That is, the film-forming water-soluble polymer is in the form of a polymer chain, and when solidified, the polymer chains are entangled and aggregated, and when dissolved in a solvent, the polymer chain is released and third materials are inserted between the polymer chains.

The solvent used in the manufacture of the laundry sheet according to the present invention may use water to dissolve the water-soluble polymer. Alcohols and the like, which are hydrophilic solvents, may be used, but water is preferably used due to the decrease in the solubility of the water-soluble polymer.

In the present invention, the 'washing detergent component' may be an anionic surfactant, a nonionic surfactant, or an amphoteric surfactant, which are generally widely used, and two or more of them may be in a mixed form.

Examples of the anionic surfactants include carboxylate compounds such as soap, higher alcohols, higher alkyl esters, sulfate compounds containing sulfates of olefins, sulfate compounds including alkylbenzene sulfonates, and lauryl sulfate salts. And the phosphate compound phosphorylated with higher alcohols.

For example, but not limited to, lauryl benzene sulfonic acid, α-olefin sulfonate, sodium lauryl sulfate, sodium lauryl ethoxylated sulfate, sec-alkanesulfonate, methyl ester sulfonate, and the like, which may be used alone or as a mixture of two or more. Preferably, sodium lauryl sulfate can be used also in the said anionic surfactant.

Further, the nonionic surfactants include, but are not limited to, polyoxy alkylene alkyl phenyl ethers, polyoxy alkylene alkyl ethers, polyoxy ethylene polyoxy propylene block polymers, polyethylene glycol fatty acid esters, polyoxy ethylene sorbitan fatty acids Ester, cocamido monomethylamine, cocamido dimethylamine, cocamido monoethylamine, fatty acid alkanolamine, amine oxide, alkyl polyglucoside, methyl polyethylene alkyl ether polyethylene alkyl ether) or sugar ether, and these may be used alone or as a mixture of two or more. In particular, it is preferable to use polyoxy alkylene alkyl ethers represented by the following general formula (1) or polyoxy alkylene alkyl phenyl ethers represented by the following general formula (2).

[Formula 1]

[Formula 2]

In the formulas (1) and (2), m is an integer of 5 to 21, n is an integer of 1 to 20.

In addition, the amphoteric surfactants include, but are not limited to, amine-oxide, cocamidopropyl betaine, and the like, and these may be used alone or in a mixture of two or more.

On the other hand, builders, enzymes, bleach, bleach activator and other active ingredients for washing to express the activity by reacting with water as a component that shows the effect, when mixed with the film-forming water-soluble polymer and other laundry detergent ingredients to manufacture The activity is expressed while dissolving in the process, there is a problem that becomes difficult to show the performance when using the actual product.

Therefore, the present invention is a washing sheet and / or a washing active ingredient prepared in the form of granules in order to solve the problem of lowering the performance of the specific washing active ingredient exhibiting the effect by reacting with water in the water-soluble polymer film exhibits the effect It is characterized by applying to a composition for producing a laundry sheet. That is, in the present invention, the active ingredient for washing manufactured in the form of granules is characterized in that it is mixed in an insoluble form between the polymer chains of the laundry sheet.

That is, the present invention is a laundry sheet manufactured using a laundry detergent component and a film-forming water-soluble polymer, wherein at least one component selected from the group consisting of builders, enzymes, bleaches and bleach activators is granulated. It provides a laundry sheet, characterized in that the addition is made to.

Preferably, in the present invention, when one or more components selected from the group consisting of builders, enzymes, bleaches and bleach activators are added and prepared as granules, the film (or laundry film) may not be dissolved in the film (or laundry film). If the moisture content of the laundry film) is below a certain level, it should be added so that the components do not dissolve and may not be activated before washing. The moisture content is not limited thereto, but preferably 30% by weight or less based on the total weight of the film.

The inventors of the present invention, when the ingredients are mixed with a water-soluble polymer solution in the manufacture of a laundry sheet, the activity is expressed in the manufacturing process of the laundry sheet, so that the performance is not exerted when the actual product is used, the components for the laundry sheet And / or have been found to be able to exert the full performance of the components when added separately in an undissolved form to the composition for preparing a laundry sheet, thereby completing the present invention.

In the present invention, the granules are not limited to any form, that is, they are not limited to any form unless the components are dissolved in the manufactured laundry sheet, and there is no particular limitation on the size thereof. That is, the granule is a term that includes all those having an irregular shape and size, commonly called particles, powders, granules and the like.

In the present invention, the granules are a collection of amorphous particles in which a specific form does not exist, and in this specification, numerous granules having different sizes are represented as average particle diameters.

In the present invention, the form of the granules is not limited thereto, and for example, a sphere, a cylinder, a splinter, or a mixture of two or more thereof may be included.

It is apparent to those skilled in the art that the term 'spherical' is also a term including a form that is not a perfect sphere. That is, the spherical cross section and / or longitudinal section includes ellipses rather than perfect circles, and also includes regular or irregularly rugged shapes, not smooth curved surfaces.

As used herein, the term "average particle diameter" means particle size measured using a laser particle size analyzer. For reference, when measuring the particle size distribution, the diameter of the particle is a virtual equivalent diameter. When one of the measured physical properties of the particle is similar to that of a fuselage sphere with a certain diameter, this diameter is called the equivalent diameter of the measured particle. Laser particle size analyzers use scattering properties to make equivalent contrasts, and the measured diameter is the equivalent scattering diameter. In other words, the diameter of the fuselage sphere with scattering properties equal to the measured diameter is used to represent the actual particle size.

In the present invention, the average particle diameter of the granules may be 0.1 to 5 mm, preferably 0.3 to 3 mm, and more preferably 0.5 to 2 mm.

Components that can be applied in the form of granules in the present invention may include, but are not limited to, builders, enzymes, bleaches, bleach activators, bactericidal / disinfectants, fragrances, and the like.

As used herein, the term "builder" means a hard water softener. The builder is not limited thereto, but refers to a substance that precipitates calcium or magnesium in hard water, removes them by ion exchange, or forms a chelate to block the action as ions. That is, the builder reacts with water to activate it to express the effect.

In general, when the builder is added to the water-soluble polymer solution in powder form during the manufacturing process of the laundry sheet, the builder is activated by the water contained in the water-soluble polymer solution during the sheet manufacturing process to exert an intact effect during the actual washing. In the case of PVA, it is difficult to formulate the sheet due to the gelation or salting phenomenon by the reaction, and the solubility may be deteriorated. In order to solve this problem, the present invention, when the builder is added to the laundry sheet in an undissolved form, the cleaning power is remarkably excellent compared to the case where most of the added builders are activated during the actual washing and added to the aqueous polymer solution. As can be seen from (see Table 3 below). In addition, it can be seen in the examples below that the sheet formulation is excellent and no builders appear on the surface (see Table 2 below).

Builders usable in the present invention may preferably be alkali builders, but are not limited to sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium metasilicate, sodium silicate, sodium neutral silicate, sodium tripolyphosphate, sodium pyrophosphate , Sodium borate, zeolite (sodium aluminosilicate), sodium sesquitanes, MEA (monoethanolamine, monoethanolamine) and TEA (triethanolamine, triethanolamine) may be any one or a mixture of two or more thereof.

As used herein, the term "enzyme" means a non-limiting enzyme that can be used as a laundry enzyme, for example, proteolytic enzymes (eg, proteases, etc.), lipolytic enzymes (eg, lipases, etc.), carbohydrates. Any one selected from the group consisting of degrading enzymes (e.g., amylase, etc.), cellulose degrading enzymes (e.g., cellulase, etc.), met degrading enzymes (e.g., mannaase), and pectin degrading enzymes (e.g., pectinase) It may be a mixture of two or more of them.

In general, when the enzyme is added to the water-soluble polymer solution in powder form during the manufacturing process of the laundry sheet, the denaturation of the enzyme contained in the sheet due to the high temperature drying process, which is essential during the manufacturing process of the laundry sheet, As a result, the activity of the enzyme is weakened, which may cause a problem that the washing power of the laundry sheet, in particular, the washing power by the enzyme is reduced.

In order to solve the problem, the present invention does not weaken the activity of the enzyme when the sheet is used, even if the enzyme is produced in granular form and subjected to a high temperature drying process for a certain time, which can be confirmed in the following examples. 3). In addition, it can be confirmed in the following examples that the sheet formulation is excellent and the enzyme does not adhere to the surface (see Table 2 below).

In the present invention, "bleach" may use a bleach which may be generally used in washing, but is not limited thereto, and as an inorganic bleach, perborate, percarbonate (for example, soda percarbonate), superphosphate, persulfate, and over Perhydrate salts including silicates and the like, organic peroxide acids including diacyl, tetraacylperoxide and the like can be used as the organic bleach.

In addition, the "bleach activator" in the present invention may use a bleach activator which can be generally used in the laundry, but is not limited thereto, tetraacetylethylenediamine (TAED), benzoylcaprolactam (BzCL), 4-nitro Benzoylcaprolactam, 3-chlorobenzoylcaprolactam, benzoyloxybenzenesulfonate (BOBS), nonanoyloxybenzenesulfonate (NOBS), phenyl benzoate (PhBz), decanoyloxybenzenesulfonate (C ₁₀ -OBS) , Benzoylvalerolactam (BZVL), octanoyloxybenzenesulfonate (C ₈ -OBS) and perhydrolysable esters can be used, or any one or a mixture of two or more thereof.

In general, when the bleach and / or the bleach activator are added to the water-soluble polymer solution in powder form during the manufacturing process of the laundry sheet, they are activated during the manufacturing process of the sheet by water contained in the water-soluble polymer solution. It is difficult to exert full effect. To solve this problem, according to the present invention, when the bleach and / or the bleach activator is added in an undissolved form, the bleaching power is increased compared to the case where most of the bleach and / or the bleach activator are actually activated during washing and added to the water-soluble polymer solution. Remarkably excellent, as can be seen in the following examples (see Table 3 below). In addition, it can be confirmed in the following examples that the sheet formulation property is excellent and the surface does not have a bleach component (see Table 2 below).

In the present invention, "sterilization / disinfectant" may use components that can be generally used for washing, but is not limited thereto, sodium hypochlorite, hydrogen peroxide, urea peroxide, sodium isocyanate dichloride (NaCl ₃ (CON) ₃ ) , Potassium sulfate ((KHSO ₅ ) ₂ KHSO ₄ K ₂ SO ₄ ), calcium peroxide, sodium tripolyphosphate, sodium acid pyrophosphate, and the like.

When the component is prepared in the form of granules, a single component or a mixture of two or more components may be prepared in the form of granules.

In addition, the laundry sheet according to the present invention may further include a fabric softener, a dispersant, an emulsifier and the like in addition to the above components.

More specifically, the laundry sheet according to the present invention may use a cationic surfactant of a quaternary ammonium salt system as a fabric softener. For example, dialkyl dimethyl ammonium chloride represented by the following formula (3), alkyl imidazolinium salt represented by the following formula (4), dialkylamido quarter represented by the following formula (5) There are dialkylamido quaternary ammonium salt and ester quat type, and one or more may be selected from these.

[Formula 3]

[Formula 4]

[Formula 5]

In Formulas 3, 4 and 5, each R is independently selected from the group consisting of linear or branched, saturated or unsaturated alkyl hydrocarbons having 1 to 30 carbon atoms.

In addition, a natural or synthetic cationic polymer may be used as the fabric softener component. For example, but not limited to, cationic guar such as guar hydroxypropyltrimonium chloride, hydroxypropyl guar hydroxypropyltrimonium chloride, cellulose (polyquaternium-10), polyquaternium series, dimethyl diallyl Ammonium chloride polymer, acrylamide-dimethyldiallylammonium copolymer, polyvinylpyrrolidone (PVP) -dimethylaminoethyl methacrylate copolymer, acrylic acid-dimethyldiallylammonium chloride copolymer, acrylamide-dimethylamino ethylmethacryl The late methyl chloride copolymer, trimethylaminoethyl methacrylate polymer and the like can be used alone or as a mixture of two or more.

In addition, the laundry sheet of the present invention may contain a dispersant. For example, the emulsifier helps to uniformly mix the water-soluble polymer and the laundry active ingredients such as cationic surfactant, and the emulsifier helps the water dispersibility of the laundry active ingredients when dissolving the film.

In the laundry sheet according to the present invention, a nonionic surfactant may be used as an emulsifier. For example, polyoxy alkylene alkyl phenyl ethers, polyoxy alkylene alkyl ethers, polyoxy ethylene polyoxy propylene block polymers, polyethylene glycol fatty acid esters, polyoxy ethylene sorbitan fatty acid esters or mixtures of two or more thereof may be used. have.

The content of the emulsifier may be 0 to 40% by weight relative to the total weight of the film after drying, preferably 1 to 20% by weight, more preferably 1 to 10% by weight. When the content of the emulsifier exceeds 40% by weight, the amount of the fabric softener and the like adsorbed on the garment may be significantly lowered, thereby lowering the flexibility.

Preferred emulsifiers may have a HLB of 2 to 18, the emulsifiers are to facilitate the manufacture of the sheet and the active ingredient contained in the prepared sheet can be removed and dispersed in the washing water all wash. In this respect it is more preferred to include an emulsifier of HLB 8-12. Where HLB means Hydrophile-Lipophile Balance.

Washing sheet according to the present invention may be used by adding a fragrance, preservatives, stabilizers, coloring agents or antimicrobial agents in addition to the above components.

The tensile strength of the laundry sheet according to the present invention is preferably 0.5 to 15 kgf / cm ² , more preferably 1 to 12 kgf / cm ² . If the laundry sheet is lower than 0.5 kgf / cm ² , there may be difficulty in distribution and use due to being easily torn during distribution or during use, and when higher than 15 kgf / cm ² , there is a concern that the fast solubility is deteriorated. have.

It is preferable that it is 1 micrometer-1 cm, and, as for the washing sheet thickness which concerns on this invention, it is more preferable that it is 5 micrometers-0.5 cm. If the thickness of the dried laundry sheet is less than 1 μm, the loading of the active ingredient is insufficient, the strength of the film is weak, the desired performance is difficult to be obtained, and if the thickness of the dried laundry sheet is more than 1 cm, quick disintegration and fast dissolving property. This is not good and it is difficult to obtain a water-soluble film of uniform properties.

The laundry sheet according to the present invention is completely dissolved in water after use, and does not require a separate process of removing the laundry sheet. That is, the water-soluble polymer forming the matrix of the sheet is dissolved in water and removed, and the contained components are dissolved or dispersed in the wash water to exert an effect.

One embodiment of the present invention provides a laundry sheet having a multi-layer structure, wherein at least one film or laundry film is laminated to form a multi-layer structure.

In another embodiment, there is provided a laundry sheet further laminated with a film or a laundry film prepared using a film-forming water-soluble polymer on one or both sides of the laundry sheet.

The present invention also provides a laundry product comprising a laundry sheet according to the present invention. The laundry product may include a laundry sheet itself according to the present invention, a laundry pouch including a laundry sheet according to the present invention, a laundry bag, a laundry bag, and the like. The laundry pouch, laundry bag, laundry bag, etc. may include two or more laundry sheets according to the present invention to form a space therein and to add the desired material to the internal space while the sheet is dissolved or after dissolution. It can be manufactured so that.

The present invention provides a laundry sheet which is completely dissolved in water and does not need to be removed after washing.

The washing sheet of the present invention is excellent in washing performance and easy to use. Moreover, the storage stability of the laundry sheet is excellent. It can be used easily, so it can be conveniently used for washing.

The laundry sheet of the present invention may contain a component that expresses an effect by reacting with water in the form of granules, thereby providing a better washing effect when washing.

The following drawings, which are attached to this specification, illustrate preferred embodiments of the present invention, and together with the contents of the present invention serve to further understand the technical spirit of the present invention, the present invention is limited to the matters described in such drawings. It should not be construed as limited.

1 illustrates an example of a laundry sheet including an active ingredient for washing in an undissolved form (granule form).

FIG. 2 illustrates an example of a laundry sheet including an active ingredient for washing in an undissolved form (granule form), and illustrates a form in which the granules protrude from the surface of the laundry sheet.

Figure 3 illustrates an example of a washing sheet laminated two films, prepared according to an embodiment of the present invention. Specifically, the laundry sheet 2 in which the film is further attached to the laundry sheet in which the active ingredient for washing in the form (granule form) which is not dissolved in the first film 10 is distributed is illustrated. The washing sheet 2 shown in FIG. 3 is present in a form in which an active ingredient for washing is not dissolved between the film and the film. Any one or more of the films constituting the sheet 2 may be a film for washing.

FIG. 4 shows an example of a washing sheet 3 in which three films are laminated according to one embodiment of the present invention.

(Explanation of the sign)

1: washing sheet

2: washing sheet in which two films are laminated in one embodiment of the washing sheet

3: washing sheet in which three films are laminated in one embodiment of the washing sheet

10: film containing a water-soluble polymer

20: active ingredient for washing

Hereinafter, examples and the like will be described in detail in order to help the understanding of the present invention. However, embodiments according to the present invention can be modified in many different forms, the scope of the present invention should not be construed as limited to the following examples. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art.

Production Example

<Comparative Examples 1 to 3>

200 g of PVA (blackness: 86.5%, average polymerization degree: 500) was added to 800 g of distilled water, and then dissolved at 80 ° C. for 4 hours to prepare a 20 wt% PVA solution. The active ingredient was added to the prepared PVA solution according to the composition ratio shown in Table 1, followed by mixing using a mechanical stirrer and dissolved. The prepared PVA solution was placed on a release film, and then manufactured to a predetermined thickness using an Elcometer film applicator, followed by drying for 10 minutes in a 105 ° C. drying oven to prepare a washing sheet (thickness: 0.01 cm).

<Examples 1 to 3>

200 g of PVA (hygroscopicity: 86.5%, average degree of polymerization: 500) was added to 800 g of distilled water, and then dissolved at 80 ° C. for 4 hours to prepare a 20 wt% PVA solution. The mixed solution is placed on a release film, and then manufactured using Elcometer's film applicator to a certain thickness. In order to apply the active ingredient in the form of granules, the granules of each component are sprinkled on a sheet and dried in a 105 ° C. drying oven for 10 minutes. A washing sheet (thickness: 0.01 cm) containing the active ingredient was prepared.

Item (unit: weight%)		Example			Comparative example
		One	2	3	One	2	3
Polymer matrix	PVA (1)	40	40	40	40	40	40
Active ingredient (dissolved in the sheet)	Surfactant (2)	48	48	48	48	48	48
	Builders (3)	-	-	-	10	-	-
	Enzymes (4)	-	-	-	-	10	-
	Bleaching Ingredients (5)	-	-	-	-	-	10
Granular active ingredient	Builders (3)	10	-	-	-	-	-
	Enzymes (4)	-	10	-	-	-	-
	Bleaching Ingredients (5)	-	-	10	-	-	-
additive	Incense and more	2	2	2	2	2	2
Sum	Sum	100	100	100	100	100	100

(week)

PVA ⁽¹⁾ : polyvinyl alcohol, saponification degree: 86.5%, average degree of polymerization: 500

Surfactant ⁽²⁾ : SLS (sodium lauryl sulfate)

Builder ⁽³⁾ : Sodium Carbonate

Enzymes ⁽⁴⁾ : proteolytic enzymes (SAVINASE, Novozymes)

Bleach Ingredients ⁽⁵⁾ : Soda Percarbonate

Experimental Example Sheet Forming and Performance Evaluation Experiment

Sheet forming and performance were evaluated for the laundry sheets prepared in Examples 1 to 3 and Comparative Examples 1 to 3 according to the following method. The performance evaluation items were divided into the washing power by the Japanese Laundry Science Association, the cleaning power for protein contaminated cloth, and the bleaching power for tea contaminated cloth.

(Sheet formation evaluation)

Formulation properties of the PVA film sheet prepared in Examples 1 to 3 and Comparative Example 1 Navi 3 was evaluated according to the following criteria through visual observation, and the results are shown in Table 2 below.

(Double-circle): The sheet formulation is flexible and is excellent without any bleeding phenomenon.

○: The sheet formulation is flexible, but the liquid component is slightly buried.

(Triangle | delta): The sheet | seat flexibility lacks and the phenomenon which a little burrs occurs.

Note: The sheet is not formulated and a lot of liquid ingredients are present.

Evaluation results	Example			Comparative example
	One	2	3	One	2	3
Sheet forming	◎	◎	◎	Ｘ	○	△

As shown in Table 2, it was confirmed that the sheet formulation properties of Examples 1 to 3 were excellent, and the sheet formulation properties were lowered as the active ingredients dissolved in the sheets were increased as in Comparative Examples 1 to 3. In particular, it was confirmed that the formulation is difficult to form when mixing the builder component in the liquid as in Comparative Example 1.

(Washing power evaluation)

Washing power was evaluated using the washing machine under the same conditions, at this time, the general water was used as the washing water. In addition, the temperature of the washing used cold water the same as the conditions used in normal households, and the contaminated cloth used for evaluating the washing power is the artificial wet contaminated cloth, the protein contaminated cloth EMPA 116 and bleaching power manufactured by the Japan Laundry Science Association. The secondary contaminant BC3 was used. In addition, the soil cloth was evaluated by attaching to the actual cotton t-shirt. In addition, 16 contaminated cloths of 5 cm × 5 cm size were used for comparative evaluation. At this time, the WB value which is the value which shows the whiteness of the contaminated cloth was measured using the color difference meter before and after washing. The laundry sheet prepared in the above example was cut to a size of 20 cm x 15 cm, and two pieces of the detergent thus cut were used. In the initial stage of washing, the washing sheet and detergent were put together with the contaminated cloth, and the washing conditions were performed at the medium water level in the standard course of the washing machine (20 minutes of washing and two rinsing cycles), and the dehydrated contaminated cloth was placed in a constant temperature and humidity room (25 ° C). , 20% RH) was dried for 1 day, and ironed to measure the WB value using the same colorimeter. The obtained result was substituted into the Kubelka Munch equation represented by Equation 1 to calculate the washing power, and the results are shown in Table 3 below.

[Equation 1]

In Equation 1, R _s represents the surface reflectance of the contaminated cloth, R _c represents the surface reflectivity of the contaminated cloth after the washing process, and R _o represents the surface reflectance of the white cotton cloth.

Evaluation results	Example			Comparative example
	One	2	3	4	5	6
Detergent (%) (Japan Laundry Science Association)	73	67	70	59	58	58
Detergency (%) (protein contaminant, EMPA116)	68	75	63	42	42	22
Bleaching power (%) (primary contaminated gun, BC3)	75	71	83	43	35	35

As shown in Table 3, the washing performance was excellent in Examples 1 to 3 when applying the active ingredient in the form of granules.

The present invention provides a laundry sheet which is completely dissolved in water and does not need to be removed after washing. The present invention provides a laundry sheet having excellent washing performance, easy use, and excellent storage stability.

Claims (13)

1. In the laundry film manufactured using the laundry detergent component and the film-forming water-soluble polymer,

   A laundry sheet, characterized in that any one or more components selected from the group consisting of builders, enzymes, bleaches and bleach activators are contained in granules.
2. The method of claim 1,

   The builders are sodium hydroxide, sodium carbonate, sodium hydrogen carbonate, sodium metasilicate, sodium alkali silicate, neutral sodium silicate, sodium tripolyphosphate, sodium pyrophosphate, sodium borate, zeolite (sodium aluminosilicate), sodium seskitan sodium, MEA (monoethanolamine , Monoethanolamine) and TEA (triethanolamine, triethanolamine) any one selected from the group consisting of or a mixture of two or more thereof.
3. The method of claim 1,

   The enzyme is a laundry sheet, characterized in that any one or a mixture of two or more selected from the group consisting of proteolytic enzymes, lipolytic enzymes, carbohydrate enzymes, cellulose enzymes, metases, pectinase.
4. The method of claim 1,

   The bleaching agent is a laundry sheet, characterized in that any one or a mixture of two or more selected from the group consisting of perborate, percarbonate, superphosphate, persulfate, persilicate, diacyl and tetraacyl peroxide.
5. The method of claim 1,

   The bleach activator is tetraacetylethylenediamine (TAED), benzoylcaprolactam (BzCL), 4-nitrobenzoylcaprolactam, 3-chlorobenzoylcaprolactam, benzoyloxybenzenesulfonate (BOBS), nonanoyloxybenzenesulfonate (NOBS), phenyl benzoate (PhBz), decanoyloxybenzenesulfonate (C ₁₀ -OBS), benzoyl valerolactam (BZVL), octanoyloxybenzenesulfonate (C ₈ -OBS) and perhydrolysable esters Laundry sheet, characterized in that any one or a mixture of two or more thereof selected from the group consisting of.
6. The laundry sheet according to claim 1, wherein the laundry films are laminated to form a multilayer structure.
7. The laundry sheet according to claim 1, further comprising laminating a film prepared by using a film-forming water-soluble polymer on one or both surfaces of the laundry sheet.
8. (S1) dissolving a film-forming water-soluble polymer and a laundry detergent component to prepare a solution for preparing a laundry film;

   (S2) forming a laundry film with the solution prepared in step (S1); And

   (S3) a laundry sheet comprising the step of adding any one or more components selected from the group consisting of a builder, an enzyme, a bleach and a bleach activator in an undissolved form to the laundry film prepared in the step (S2). Manufacturing method.
9. The method of claim 8,

   Method of producing a laundry sheet, characterized in that the addition of any one or more components selected from the group consisting of a builder (builder), enzyme, bleach and bleach activator of the step (S3) in the form of granules.
10. The method of claim 8,

    (S4) preparing a film by preparing a film-forming water-soluble polymer; And

    (S5) The method of manufacturing a laundry sheet further comprising the step of bringing the film of step (S4) into close contact with the laundry sheet.
11. The method of claim 10, wherein the film of the step (S4) further comprises a laundry detergent component.
12. The method of claim 10, wherein the step (S5),

    Between the film for washing and the film formed in the step (S4) characterized in that the film is in close contact with one or more components selected from the group consisting of builders, enzymes, bleach and bleach activator in an undissolved form , Manufacturing method of a washing sheet.
13. The laundry sheet manufactured by the manufacturing method of any one of claims 10 to 12.

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