KR100808456B1 - Fucntional sheet for delivering laundry actives in low-temperature water - Google Patents

Abstract

A functional sheet is provided to separate effective components from a base sheet thereof and adsorb the separated effective components into clothing even in low-temperature water. A functional sheet is used within a low-temperature water of 0-25‹C, wherein the functional sheet has a first base coated or impregnated with effective components. The effective components are physically or chemically adsorbed into a second base disposed in the low-temperature water. The effective components remain in the second base even after removing the low-temperature water. The first base makes a water contact angle of no more than 90 degrees, thereby separating at least 70% of effective components from the first base even in the low-temperature water within 5 minutes.

Description

Low temperature water active functional sheet {FUCNTIONAL SHEET FOR DELIVERING LAUNDRY ACTIVES IN LOW-TEMPERATURE WATER}

The present invention relates to a functional sheet coated or impregnated with an active ingredient such as a fabric softener that can be detached from low temperature water.

General cleaning agents and other auxiliaries are used for washing clothes and other textiles. Detergents serve to separate debris from clothing or textiles and are removed with washing water.

Unlike detergents, there are supplements that remain in the cloth and perform certain functions after washing. Examples of such agents include softening agents that soften or restore the quality of cloth by correcting the texture deformation of the cloth, and deforming cloth, bacteria, and other larvae. Antibacterial agents for preventing the spreading and propagation of the back and the like, and antistatic agents for improving the wearing comfort by suppressing the generation of static electricity against the cloth that generates static electricity when the friction force is applied. Such adjuvants are used separately from the detergent and the administration time during the washing process to perform the function. The washing is usually performed in the order of washing, rinsing, and dehydration through a soaking process with a certain waiting time at the same time as the detergent is added. Such aids are used, for example, in the final rinsing or in drying after dehydration.

The washing machine used in the washing machine is generally used in the form of a unit of the powder processed into powder in the form of powder, a solid detergent is also partially used for hand washing. However, adjuvants such as softeners, antistatic agents and antibacterial agents are each liquid and packaged in bottles or containers. In particular, commercially available household softeners are mostly liquid type, heavy, heavier, inconvenient to administer and difficult to use and quantitative in purchase and / or use.

On the other hand, unlike liquid fibrous softeners used in rinsing times of general washing machines, sheet-type fibrous softeners for dryers that exhibit performance only at high temperatures of a dryer are sold. As shown in Fig. 2, when the laundry is dried in the dryer, the moisture in the laundry becomes hot steam by heat, and under the high temperature steam atmosphere, the laundry swells and the active ingredient is vaporized and dried from the dryer sheet type softener. It is detached from the sheet by friction and is forced to the fiber.

An object of the present invention is a functional sheet, which, unlike washing detergent during water washing, is coated or impregnated with an active ingredient that is adsorbed on clothes after washing and exhibits a specific function, and is easily detached from the sheet even in low temperature water. It is intended to provide a functional sheet that can be easily adsorbed onto a substrate.

The present invention is to provide a condition that can effectively penetrate water into the functional sheet coated or impregnated with the active ingredient when treated with wash water or rinsing water, so that the active ingredient on the sheet is easily detached even in low temperature water.

In order to achieve the above object, the present invention is a functional sheet which is applied or impregnated with the active ingredient (s) on the first substrate and is used by being put in a low temperature water of 0 ℃ to 25 ℃ ℃, The active ingredient is physically or chemically adsorbed onto the second substrate in the low temperature water and remains on the second substrate even after the low temperature water is removed. Provided is a functional sheet characterized in that at least 70% of the active ingredient applied or impregnated on the first substrate in 5 minutes at low temperature of 25 ° C to 25 ° C can be detached from the functional sheet.

According to the present invention, even after the washing is completed, the functional sheet, which is applied or impregnated with an active ingredient such as a softening agent that is adsorbed on the clothes and exhibits a specific function, can be easily detached from the active ingredient on a sheet even in low temperature water, and is distributed, stored and Easy to use, quantitative use of active ingredients is possible.

In the present specification, the first substrate is a carrier or a medium for delivering an active ingredient to low temperature water, and a sheet to which an active ingredient is impregnated or applied before use.

In the present specification, the second substrate is an object to which the active ingredient is to be adsorbed in low temperature water, and includes clothing or fiber, and is usually an object of washing.

Hereinafter, the present invention will be described in detail.

Active ingredients, such as softeners, are adsorbed on clothing after washing and are added during final rinsing to achieve a specific function. Softeners are usually used in liquid form because they must be dispersed in cold water for short rinsing times within 5 minutes. do. However, liquid softeners are heavy, heavier, inconvenient to administer, and difficult to quantify when purchased and / or used. Therefore, the present invention is to solve the problem of the liquid softener by providing or applying the active ingredient on a porous substrate. At this time, the functional sheet coated or impregnated with the active ingredient on the substrate should be detached from the substrate in the low temperature water in a short rinse time of 3 to 5 minutes and adsorbed onto the second substrate, for example, laundry.

The present invention provides a functional sheet capable of desorbing 70% to 100% of the active ingredient applied or impregnated onto the first substrate within 5 minutes in normal rinsing conditions, such as room temperature, in particular cold water at 0 ° C to 25 ° C. In order to provide, the first substrate is characterized by using a substrate having a water contact angle of 90 degrees or less.

The water contact angle refers to a contact angle (see FIG. 3) formed with water droplets on the surface without being absorbed by the surface due to the surface tension of water when the water droplet is dropped on the surface, and the contact angle changes according to the surface active property of the surface. The higher the hydrophilicity of the surface, the smaller the water contact angle.

The use of a hydrophilic substrate having a water contact angle of 90 degrees or less as the first substrate facilitates the penetration of water into the functional sheet to which the active ingredient is applied or impregnated when treated with washing water or rinsing water, even on low temperature water. The active ingredient can be easily detached. In addition, when the water contact angle is greater than 90 degrees with the first base material, not only the effective ingredients cannot be stably applied or impregnated on the first base material, but also the cold water is forcedly fixed onto the first base material. Of the active ingredient is difficult to disperse from the first base material to the low temperature water, so that the active ingredient is hardly adsorbed onto the second base material.

In practice, the non-woven fabric treated with a hydrophilic emulsion had a water contact angle of 120 degrees, and the hydrophilic emulsion was treated with a hydrophilic silicone surfactant at a concentration of 50-100 ppm, and the water contact angle exceeded 90 degrees. The powder was not applied to the nonwoven fabric stably and the active ingredient was not applied sufficiently.

The first base material having a water contact angle of 90 degrees or less may be a surface-treated sheet made of hydrophobic polymer fiber with a hydrophilic agent or a natural fiber having hydrophilicity, or a sheet made of hydrophilic polymer.

The hydrophilic emulsion according to the present invention is a material capable of imparting hydrophilicity by changing the interfacial properties, for example, a hydrophilic surfactant and the like, and those skilled in the art can easily select a material that can be used as a hydrophilic emulsion. For example, when the nonwoven fabric is used as the first substrate, a hydrophilic silicone surfactant may be used. The amount of the hydrophilic oil may vary depending on the type of the first substrate and the type of the hydrophilic oil, but it may be generally used at about 1,000 to 100,000 ppm, and the amount of the hydrophilic oil may be used to achieve a water contact angle of 90 degrees or less through repeated experiments. You can choose the enemy.

Hydrophilic surface treatment is the physical or chemical attachment of a hydrophilic agent with a hydrophilic group to a sheet made of polymeric fibers.

Non-limiting examples of hydrophilic functional groups include Sulfonate salt (sulfonate salt), sulfonic acid (sulfuric acid), carboxylate salt (carboxylate salt), carboxylic acid (carboxylic acid), phosphate salt (phosphate salt), phosphoric acid (phosphoric acid), hydroxy group (OH) and the like. In addition, an inorganic polymer (eg, a composite metal oxide) or an organic polymer containing Si may be used as the hydrophilic oil. To further enhance the hydrophilic properties, the inorganic polymer may have a porous structure, such as a porous tubular structure.

Non-limiting examples of the hydrophilic monomer when the hydrophilic agent is a polymer include carboxyl group-containing ethylenically unsaturated monomers, sulfonic acid group-containing ethylenically unsaturated monomers, hydroxyl group-containing ethylenically unsaturated monomers, and the like. Carboxylic acid monomers, such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, can be used as a carboxyl group-containing ethylenically unsaturated monomer. As the sulfonic acid group-containing ethylenically unsaturated monomer, styrene sulfonic acid, naphthalene sulfonic acid and the like can be used. Hydroxyl-containing ethylenically unsaturated monomers are preferably hydroxy alkyl methacrylates having 1 to 12 carbon atoms in the alkyl group, and hydroxy ethyl methacrylate, hydroxy propyl methacrylate, or hydroxy butyl methacrylate may be used. Can be.

Hydrophilic surface treatment method is to apply the coating liquid containing the hydrophilic agent to the substrate, for example, Dip coating, Die coating, roll coating, comma coating, doctor blade Various methods such as spraying, gravure printing, or a mixture thereof can be used. The coating may be divided once or twice, and if necessary, after coating, a cured coating film may be formed by conventional heating and drying methods.

On the other hand, the first base material having a water contact angle of 90 degrees or less is preferably a porous substrate. When the active ingredient is applied or impregnated on the porous substrate, the surface area of the active ingredient is also increased, thereby facilitating the detachment from the porous substrate and the dispersion in the low temperature water, thereby shortening the detachment and dispersion time of the active ingredient. At this time, the functional sheet coated or impregnated with the active ingredient also has an optimum porosity per unit area to facilitate the penetration of low-temperature water in the functional sheet as well as exhibit excellent water dispersibility of the active ingredient. In addition, the functional sheet manufactured to maintain the pore structure even after the effective ingredient is applied or impregnated, the specific surface area of the active ingredient is large, the active ingredient can be easily detached to low-temperature water.

The first substrate may be natural materials such as cotton, hemp, linen, silk, synthetic materials such as rayon, cellulose esters, polyvinyl derivatives, polyolefins, polyamides, or polyesters, or paper. The first substrate may be a woven or nonwoven fabric.

The first substrate is thermal bonding, air through, spun bond of at least one polymer fiber selected from the group consisting of polypropylene, polyethylene terephthalate, polyethylene, nylon, rayon, pulp and acrylic It is preferable that the non-woven fabric is manufactured by bonding or melt-blown. At this time, the material of the first base material is preferably polyethylene (PE) or polypropylene (PP), polyethylene terephthalate (PET) because it is low in cost, excellent in form stability during commercialization and less fluff after washing. Since the functional sheet of the present invention is used in low temperature water, unlike the sheet type fabric softener for a dryer, the first substrate does not require heat resistance at high temperature.

In addition, it is desirable to easily fold the functional sheet from the viewpoint of reducing the volume in circulation, and for this purpose, the first substrate is preferably flexible.

At this time, the fineness of the polymer fibers forming the first base material is preferably 1 to 10 denier, more preferably 3 to 7 denier. This is because the active ingredient and / or the cold water can be easily impregnated by the capillary action in the free space between the fibers in the range of the fineness.

The basis weight means a mass (g) per 1 m ² , and the basis weight of the first substrate may be 10 to 100, and preferably 15 to 50. If less than 10, the amount of active ingredient loading is too small, if more than 100, the weight of the first substrate itself is too heavy.

Low temperature water in the present invention contains not only water but also an aqueous solution and an aqueous dispersion.

In addition, a functional sheet in which at least 70% of the active ingredients applied or impregnated on a first substrate within 5 minutes at room temperature, in particular, low temperature water of 0 ° C. to 25 ° C. is detached is also within the scope of the present invention.

Non-limiting examples of the active ingredient that is adsorbed on the clothes after washing to perform a specific function include softeners, fragrances, antistatic agents, stabilizers, colorants, preservatives, antibacterial agents, electrolytes, optical brighteners, bleaches and the like.

The active ingredient is preferably liquid at 60 ° C. or higher and solid at 25 ° C. for sheet-like formulation. In the manufacturing process, it is preferable to be liquid at 60 ° C or higher for smooth coating, and it must be solid because the active ingredient does not flow under storage conditions and must maintain its form. This is because when the active ingredient in liquid form is impregnated into a porous substrate such as a nonwoven fabric at room temperature, it becomes slippery and no formulation is formed.

The low-temperature water-activated functional sheet according to the present invention may adjust the coating or impregnation content of the active ingredient to 100 to 500 parts by weight based on 100 parts by weight of the first substrate, and preferably to 200 to 400 parts by weight. That is, the impregnation or coating amount per unit area of the active ingredient on the functional sheet is 0.1-20 mg / cm ² Can be. On the contrary, the sheet-like fabric softener for high temperature dryer has a small amount of the active ingredient which can be applied.

When the active ingredient is a softening agent, it is preferable to use a softening agent selected from the group consisting of cationic surfactants represented by the following Chemical Formulas 1, 2 or 3 in order to facilitate the detachment of the softening agent from the first substrate when rinsing with cold water.

 [Formula 1]

[Formula 2]

[Formula 3]

Where

R ₁ , R ₂ , R ₅ , R ₆ and R ₇ are linear or branched C ₇ to C ₂₁ alkyl groups, C ₇ to C ₂₁ alkenyl groups or C ₇ to C ₂₁ alkynyl groups,

R ₃ And R ₄ are each a C ₁ to C ₄ alkyl group,

A is a C ₁ -C ₄ alkyl group, (CH ₂ ) _n OH or (CH ₂ ) _m OCOR ₈ ,

B is (CH ₂ ) _n OH or (CH ₂ ) _m OCOR ₉ ,

Where n and m are each an integer from 1 to 4,

R ₈ and R ₉ are each linear or branched C ₇ -C ₂₁ alkyl group, C ₇ -C ₂₁ alkenyl group, or C ₇ -C ₂₁ alkynyl group,

X is halogen or C ₁ -C ₄ alkyl sulfates, preferably F, Cl, I, Br, CH ₃ SO ₄ or CH ₃ CH ₂ SO ₄ .

The cationic surfactant preferably satisfies Equation 1 below.

[Equation 1]

Q / T ≥ 0.6

Here, T is a C ₇ ~ C ₂₁ alkyl group in the R ₁ , R ₂ , R ₅ , R ₆ , R ₇ , A and B detected by HPLC (high pressure liquid chromatography) or GC (gas chromatography), C ₇ The total area of the peaks for the ˜C ₂₁ alkenyl group and C ₇ ˜C ₂₁ alkynyl group,

Q is a saturated hydrocarbon in R ₁ , R ₂ , R ₅ , R ₆ , R ₇ , A and B, ie, C ₇ -C ₂₁ alkyl group, detected by HPLC (high pressure liquid chromatography) or gas chromatography (GC). For the total area of the peak.

When the ratio of the C ₇ to C ₂₁ alkyl substituents analyzed by HPLC (high pressure liquid chromatography) or GC (gas chromatography) in the cationic surfactant is 0.6 or more, it can be easily de-dispersed in cold water. It is preferable that it is 0.6-0.9, and, as for the ratio of the said alkyl substituent, it is more preferable that it is 0.7-0.9. When the ratio of the alkyl substituent is less than 0.6, a problem may occur in that the cationic surfactant is not easily applied and supported on the sheet and is easily detached from the sheet.

In addition, it is preferable that the cationic surfactant further satisfies Equation 2 below.

[Equation 2]

P / T ≥ 0.9

Where

P is the R _1, which is detected by HPLC (high pressure liquid chromatography) or _{GC (gas chromatography) R 2,} R 5, R 6, R 7, A and in the C ₁₂ ~ C ₁₈ alkyl group, C ₁₂ ~ C B The total area of the peaks for ₁₈ alkenyl groups and C ₁₂ to C ₁₈ alkynyl groups,

T is the same as defined above.

The ratio of the long chain substituents (C ₁₂ ~ C ₁₈ alkyl group, C ₁₂ ~ C ₁₈ alkenyl group and C ₁₂ ~ C ₁₈ alkynyl group) analyzed by HPLC (high pressure liquid chromatography) or gas chromatography (GC) in the cationic surfactant If it is 0.9 or more, it is easy to apply and carry on the first substrate by Van der Waals' force, and the active ingredient including cationic surfactant is easily detached from the functional sheet before the functional sheet is introduced into water. It doesn't work.

In addition, the cationic surfactant preferably satisfies Equation 3 below.

[Equation 3]

0.6 ≤ (Q ₁ / T ₁ ) * X + (Q ₂ / T ₂ ) * Y + (Q ₃ / T ₃ ) * Z ≤ 0.9

Where

T ₁ is the total area of the peaks for the C ₇ -C ₂₁ alkyl group, C ₇ -C ₂₁ alkenyl group and C ₇ -C ₂₁ alkynyl group of R ₁ and R ₂ detected by HPLC (high pressure liquid chromatography),

Q ₁ is the total area of the peaks for the saturated hydrocarbons of R ₁ and R ₂ , namely C ₇ -C ₂₁ alkyl groups, detected by HPLC,

T ₂ is the total area of the peaks for the C ₇ to C ₂₁ alkyl groups, C ₇ to C ₂₁ alkenyl groups, and C ₇ to C ₂₁ alkynyl groups of R ₅ and R ₆ detected by gas chromatography (GC),

Q ₂ is the total area of the peaks for the saturated hydrocarbons of R ₅ and R ₆ , ie C ₇ -C ₂₁ alkyl groups, detected by GC,

T ₃ is the total area of the peaks for the C ₇ to C ₂₁ alkyl groups, C ₇ to C ₂₁ alkenyl groups and C ₇ to C ₂₁ alkynyl groups in R ₇ , A and B detected by GC,

Q ₃ is the total area of the peaks for saturated hydrocarbons in R ₇ , A and B, ie C ₇ -C ₂₁ alkyl groups, detected by GC,

X is a weight ratio of the compound represented by Formula 1 to the total amount of cationic surfactant used,

Y is the weight ratio of the compound represented by the formula (2) to the total amount of cationic surfactant used,

Z is the weight ratio of the compound represented by Formula 3 to the total amount of cationic surfactant used.

In addition, the cationic surfactant preferably satisfies the following formula (4).

[Equation 4]

(P ₁ / T ₁ ) * X + (P ₂ / T ₂ ) * Y + (P ₃ / T ₃ ) * Z ≥ 0.9

Where

P ₁ is the total area of the peaks for the C ₁₂ to C ₁₈ alkyl, C ₁₂ to C ₁₈ alkenyl and C ₁₂ to C ₁₈ alkynyl groups of R ₁ and R ₂ detected by HPLC (high pressure liquid chromatography),

P ₂ is the total area of the peaks for the C ₁₂ to C ₁₈ alkyl group, C ₁₂ to C ₁₈ alkenyl group and C ₁₂ to C ₁₈ alkynyl group of R ₅ and R ₆ detected by gas chromatography (GC),

P ₃ is the total area of the peaks for the C ₁₂ to C ₁₈ alkyl group, C ₁₂ to C ₁₈ alkenyl group and C ₁₂ to C ₁₈ alkynyl group in R ₇ , A and B detected by gas chromatography (GC),

T ₁ , T ₂ , T ₃ , X, Y, and Z are the same as defined above, respectively.

Preferred examples of the softening agent include a dimethyl dialkyl ammonium chloride which is a natural softening component.

In addition, a dispersing agent can be used together and can be used for the functional sheet of this invention. At this time, the use of a high dispersing emulsifier can be uniformly dispersed in the active ingredient even in low temperature water.

The content of the emulsifier is preferably 10 parts by weight or less based on 100 parts by weight of the total active ingredient composition to be impregnated on the first substrate. When the content is 10 parts by weight or more, the slippery phenomenon is severe after the sheet production is inconvenient to use.

Examples of the preferred emulsifiers are HLB 2 to 18, and the emulsifiers may allow the ease of manufacture of the sheets and the active ingredients impregnated in the prepared sheets to be detached and dispersed in the washing water. In this respect it is more preferred to include an emulsifier of HLB 8-12. HLB here means Hydrophilic-Lipophile Balace.

The functional sheet of the present invention may be prepared by applying or impregnating an active ingredient on a first substrate. Examples of the application or impregnation method include dip coating, die coating, roll coating, Various methods may be used, such as a comma coating, a doctor blade, a spray, a gravure printing method, or a mixture thereof.

Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely to illustrate the present invention, and the scope of the present invention is not limited to the following examples.

EXAMPLE

Experimental Example

30gsm high density polypropylene spunbond nonwoven fabric (a), 15gsm low density polypropylene spunbond nonwoven fabric (b) using a contact angle meter (KRUSS, FM40, EASY DROP), 30gsm hydrophilized with 5,000 ppm hydrophilic silicone surfactant The water contact angle of the high density polypropylene spunbond nonwoven fabric of (c) was measured, and the experimental results are shown in FIG. 4.

As shown in FIG. 4, the non-hydrophilic polypropylene nonwoven fabric (a) (b) had a water contact angle of about 120 degrees. On the other hand, the hydrophilic polypropylene nonwoven fabric (c) absorbed all the water droplets dropped on the surface and thus was unable to measure the water contact angle (corresponding to the water contact angle of 0 degrees).

Comparative example  One, Example  1 to 3

Using a first substrate having a water contact angle as shown in Table 1 below, to prepare a composition for base impregnation with each active ingredient and content shown in Table 1, through the compression coating and cooling step to prepare a functional sheet. At this time, the temperature of the composition for impregnation of the substrate during the compression coating was a liquid phase at 60 ℃, the cooling temperature was 25 ℃.

The first substrate used in Comparative Example 1 is a spunbonded polypropylene nonwoven without hydrophilic surface treatment, and the first substrate used in Examples 1 to 3 was hydrophilized with a hydrophilic silicone surfactant, but the amount was different. One spunbond polypropylene nonwoven fabric.

The water absorption rate of each nonwoven fabric used as the first substrate in Comparative Examples 1 and 1 to 3 was obtained by immersing the nonwoven fabric in cold water at 20 ° C. for 5 minutes and then saturating the nonwoven fabric with the weight of the first nonwoven fabric. The difference in weight was measured and calculated by dividing by the weight of the first nonwoven fabric used.

TABLE 1

Unit (% by weight)

Ingredient Comparative Example 1 Example 1 Example 2 Example 3 Nonwoven fabric (first base) Water absorption rate (%) (Water contact angle) 0 (120 degrees) 0.1 (Not measurable) 0.5 (Not measurable) 1 (Not measurable) Softener: Ester Quat (EQ, Formula 2) 20 20 30 30 Formulation Dispersant: Glycerol Monostearate 20 20 10 10 Formulation Dispersant : Glycerol Distearate 10 10 Emulsifier: Polyoxyethylene Sorbitan Ester Tween-81 (HLB 10) 3 3 3 3 Stearamido propyldimethylamine 10 10 20 30 * Other additives A reasonable amount A reasonable amount A reasonable amount A reasonable amount incense 10 10 10 10

* Other additives: Displays trace additives such as pigments, preservatives, antioxidants and antifoams.

Performance evaluation was performed by the test method described below for each functional sheet prepared in Examples 1-3 and Comparative Example 1. The results are shown in Table 2 below.

Experiment 1: Solubility Test

For each functional sheet prepared in Examples 1 to 3 and Comparative Example 1, it was measured how well the active ingredient is dissolved in the cold water and dispersed in the cold water. 3 L of cold water at 20 ° C. was added to each of the functional sheets and stirred for 5 minutes, and then measured by the difference between the weight of the first functional sheet and the weight of the dried functional sheet. The solubility measurement was repeated three more times.

Evaluation results Very good (◎) Excellent (○) Normal (△) Bad (×) Dissolution over 90 80 to 90% 70 to 80% 70% less than

Experiment 2: Flexible Effect Test

Commercially available 100% cotton towels were dehydrated after repeated washing with a washing machine for 5 times using a standard washing detergent. Subsequently, the dehydrated cotton towels were added to the rinse water (bath ratio 1:30, 25 ° C.) together with each of the functional sheets prepared in Examples 1 to 3 and Comparative Example 1, and then flexibly treated for 5 minutes, followed by dehydration. It was conditioned for 24 hours at 20 ° C. and 65% RH. Subsequently, according to the sensory evaluation test of a skilled panelist, the degree of touch was given as the softness score from 1 to 5 points, and this was repeated three or more times to measure the softness effect as the average value.

Evaluation results Very good (◎) Excellent (○) Normal (△) Bad (×) Suppleness score 4.5 or more 3.5 to 4.5 2.5 to 3.5 Less than 2.5

Experiment 3: Absorbency Test

Standard cotton cloth is cut into weft and incline, and cut into 2 × 15cm size, and then the test cloth which is softly treated in the same manner as in Experiment 2 and conditioned at 20 ° C. and 65% RH for 24 hours is vertically hung using clamps and weights. Subsequently, the tip of the test cloth was immersed in an aqueous solution in which the water-soluble blue dye was diluted to 0.1%, and the rising height of the blue dye was measured after 20 minutes, and this was repeated three more times to test the absorption effect at the average value.

Evaluation results Very good (◎) Excellent (○) Normal (△) Bad (×) Absorption Height (mm) More than 100 70-100 40 to 70 Less than 40

Experiment 4: Static Electricity Preventive  Test (half life)

Constant leakage voltage was measured as follows for each test fabric subjected to the flexible treatment in the same manner as in Experiment 4 and conditioned at 20 ° C. and 65% RH for 24 hours. After applying the KS K-0555A test method and applying the initial voltage of 150V using the Swiss Voltschild Static Voltmeter, the constant voltage leakage rate is measured as the time when the voltage drops by half, and the measurement is repeated three or more times to obtain the average value. Obtained.

Evaluation results Very good (◎) Excellent (○) Normal (△) Bad (×) Leakage rate (sec) below 10 10 to 10 ² 10 ² to 10 ³ 10 ³ or more

Experiment 5: Reverberation Evaluation

In the same way as in Experiment 1, the flexible cotton towel was used as a 5-point scale. The panelist was evaluated and scored three times.

Evaluation results Very good (◎) Excellent (○) Normal (△) Bad (×) Reverberation effect score 4.5 or more 3.5 to 4.5 2.5 to 3.5 Less than 2.5

TABLE 2

Comparative Example 1 Example 1 Example 2 Example 3  Performance evaluation Softening effect △ ◎ ◎ ◎ Reverberation effect △ ◎ ◎ ◎ Solubility × ◎ ◎ ◎ Absorbent × ◎ ◎ ◎ Antistatic (half life) △ ◎ ◎ ◎

As can be seen in Table 2, unlike the functional sheet using the first substrate having a water contact angle of 120 degrees without being hydrophilic, the functional sheet having a water contact angle of 90 degrees or less due to the hydrophilic treatment of the first substrate according to the present invention is absorbent. In addition, it can be seen that the softness, reverberation effect, and antistatic effect of the active ingredients impregnated into the functional sheet are sufficiently exhibited by excellent solubility in low temperature water.

1 is a schematic diagram showing a performance expression mechanism of a functional sheet according to an embodiment of the present invention.

Figure 2 is a schematic diagram showing the performance expression mechanism of the conventional sheet type fabric softener for the dryer.

3 shows a water contact angle.

4 is a photograph showing a water contact angle of various first substrates.

Claims (14)

A functional sheet which is coated or impregnated with active ingredient (s) on a first substrate and is used by being poured into low temperature water of 0 ° C to 25 ° C, The active ingredient is physically or chemically adsorbed onto the second substrate in the cold water and remains on the second substrate even after the cold water is removed. Using a substrate having a water contact angle of 90 degrees or less as the first substrate, 70% or more of the active ingredients coated or impregnated on the first substrate can be detached within 5 minutes in a low temperature water of 0 ° C to 25 ° C. Functional sheet. The functional sheet according to claim 1, wherein the substrate having a water contact angle of 90 degrees or less is a surface treated sheet made of a polymer with a hydrophilic oil or a sheet made of a hydrophilic polymer. The functional sheet according to claim 1, wherein the water contact angle of the first substrate is 0 degrees. The functional sheet according to claim 2, wherein the hydrophilic emulsion is a hydrophilic silicone surfactant. The functional sheet according to claim 2, wherein the hydrophilic emulsion surface-treated on the polymer sheet is used at 1,000 to 100,000 ppm. The functional sheet of claim 1, wherein the first substrate is a porous substrate. The functional sheet according to claim 2, wherein the polymer sheet to be surface treated is made of polyethylene, polypropylene, or polyethylene terephthalate. The functional sheet of claim 1, wherein the first substrate is a nonwoven fabric or a woven fabric. The functional sheet according to claim 1, wherein the pore structure is maintained even after the active ingredient is applied or impregnated. The functional sheet according to claim 1, wherein the active ingredient is at least one selected from the group consisting of softeners, fragrances, antistatic agents, stabilizers, colorants, preservatives, antibacterial agents, electrolytes, optical brighteners, and bleaching agents. The functional sheet according to claim 1, wherein the active ingredient uses an emulsifier or a dispersant in combination. The functional sheet according to claim 11, wherein the content of the emulsifier is 10 parts by weight or less based on 100 parts by weight of the total active ingredient composition to be impregnated on the first substrate. The functional sheet according to claim 1, wherein the active ingredient is a liquid at 60 ° C or higher and a solid at 25 ° C. The method of claim 1, wherein the impregnation or coating amount per unit area of the active ingredient on the functional sheet is 0.1 to 20 mg / cm ² The functional sheet which is characterized by being.

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