Sheet-type laundry detergent manufacturing method

Abstract

A sheet-type laundry detergent manufacturing method, according to one embodiment of the present invention, may comprise: an aging step for aging, in an aging room, a laundry detergent composition prepared by including PVA, PVP, starch, and a surfactant in purified water; a foaming step for foaming the laundry detergent composition, which has undergone the aging step, by using a foaming machine so that the laundry detergent composition has a density of 0.1 to 0.9 g / cm 3 and a viscosity of 25,000 to 55,000 cps; a coating step for placing the laundry detergent composition, which has been foamed by undergoing the foaming step, in a coating liquid container of a comma coating machine and coating a release film therewith in a predetermined thickness; a drying step for placing the release film and the laundry detergent composition, which have undergone the coating step, in a dryer and drying only the purified water, thereby manufacturing the laundry detergent composition coated on the release film into a fabric; a peeling step for peeling, from the release film, the laundry detergent composition which is maintained in the fabric form and has the purified water removed therefrom by undergoing the drying step; and a lamination step for mist-spraying water on the laundry detergent composition, which has been shaped into the fabric form by undergoing the peeling step, so as to overlap 1-10 thereof, and then placing same in the dryer so as to laminate the plurality of fabric-form laundry detergent compositions.

Description

Method for manufacturing sheet-type laundry detergent

[0001] The present invention relates to a method for manufacturing a sheet-type laundry detergent.

[0002] Typically, powdered or liquid detergents have been used in washing machines.

[0003] However, liquid detergents are relatively heavy, which makes consumers reluctant to use them, and powder detergents cause the powder to fly when used and leave residue after washing, so the need for a new type of detergent has been constantly raised.

[0004] A new sheet-type solid detergent, a new laundry sheet, was developed by improving existing detergents, but there was a problem that it was alkaline and caused irritation and damage to the skin, and the solubility of the sheet itself was insufficient.

[0005] The present invention, which has been conceived with the above technical background, aims to provide a method for manufacturing a sheet-type laundry detergent having excellent cleaning properties, excellent solubility, and ease of storage and use.

[0006] A method for manufacturing a sheet-type laundry detergent according to one embodiment of the present invention comprises an aging step of aging a laundry detergent composition manufactured by adding PVA, PVP, starch and a surfactant to purified water in an aging room, and a density of the laundry detergent composition that has undergone the aging step is 0.1 to 0.9 g / , the viscosity may include a foaming step of foaming using a foamer so that 25,000 to 55,000 cps, a coating step of putting the foamed laundry detergent composition through the foaming step into a coating liquid container of a comma coating machine and applying it to a release film at a certain thickness, a drying step of putting the release film through the coating step and the laundry detergent composition into a dryer to dry only the purified water and to form a fabric of the laundry detergent composition applied to the release film, a peeling step of peeling the laundry detergent composition maintained in the fabric form through the drying step and from which the purified water has been removed from the release film, and a lamination step of spraying water mist onto the laundry detergent composition in the fabric form through the peeling step to overlap 1 to 10 pieces and then putting it into the dryer to laminate a plurality of fabric-shaped laundry detergent compositions.

[0007] The above laundry detergent composition may contain 7 to 17 wt% of the PVA, 2 to 8 wt% of the PVP, and 2 to 8 wt% of the starch, based on the total weight.

[0008] The above surfactant may include 40 to 60 wt% of AOS-1416, an anionic surfactant, 2 to 8 wt% of PCG, an anionic surfactant, and 6 to 14 wt% of APG, a nonionic surfactant.

[0009] It may further include 0.1 to 0.6 wt% of sodium benzoate, 0.3 to 1.5 wt% of sodium citrate, 0.3 to 1.5 wt% of citric acid, and 1 to 6 wt% of salt.

[0010] It may further include 0.3 to 3 wt% of natural soap ingredients, 0.3 to 3 wt% of silk extract, 0.5 to 6 wt% of cyclodextrin, and 0.5 to 6 wt% of multiple enzymes.

[0011] The above maturation step can mature the above laundry detergent composition for 2 to 50 hours at 25 to 70 degrees.

[0012] The above application step can be applied in a thickness of 0.3 to 3.8 mm.

[0013] The above drying step can dry purified water by setting the dryer temperature to 40 to 210 degrees and the drying speed to 0.3 to 6 m / min.

[0014] The above peeling step is performed so that the peeled fabric has a thickness of 0.3 to 3.8 mm and a density of 0.03 to 0.35 g / It could be.

[0015] The above-mentioned bonding step may be performed at a temperature of 50 to 130 degrees Celsius.

[0016] A method for manufacturing a sheet-type laundry detergent according to one embodiment of the present invention has excellent cleaning properties, excellent solubility, and can be conveniently stored and used.

[0017] Figure 1 is a flow chart of a method for manufacturing a sheet-type laundry detergent according to one embodiment of the present invention.

[0018] Figure 2 is a perspective view of a sheet-type laundry detergent according to one embodiment of the present invention.

[0019] Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description have been omitted for clarity of description, and the same reference numerals designate identical or similar components throughout the specification.

[0020] In this specification, it should be understood that terms such as "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof. In addition, when it is said that a part such as a layer, film, region, or plate is "on" another part, this includes not only the case where it is "directly on" the other part, but also the case where there is another part in between. Conversely, when it is said that a part such as a layer, film, region, or plate is "under" another part, this includes not only the case where it is "directly under" the other part, but also the case where there is another part in between.

[0021] FIG. 1 is a perspective view of a sheet-type laundry detergent according to one embodiment of the present invention.

[0022] Referring to Fig. 1, the sheet-type laundry detergent (1) is manufactured using purified water, PVA (Polyvinyl Alcohol), PVP (Polyvinylpyrrolidone), and starch, and may contain a surfactant. The surfactant may be a cleaning active ingredient of the laundry sheet.

[0023] The sheet-type laundry detergent (1) may contain 7 to 17 wt% of PVA, 2 to 8 wt% of PVP, and 2 to 8 wt% of starch relative to the total weight, and may contain a surfactant. For example, the sheet-type laundry detergent () may contain 10 wt% of PVA, 5 wt% of PVP, 6 wt% of starch, and natural surfactants APG and PCG relative to the total weight.

[0024]

[0025] To aid in understanding the present invention, the following examples are presented. However, these examples are provided solely to facilitate a better understanding of the present invention, and the scope of the present invention is not limited by these examples.

[0026]

[0027] Example: Laundry sheet performance test

[0028] <Example 1>

[0029] A laundry sheet containing 10 wt% of PVA, 5 wt% of PVP, 6 wt% of starch, and 48 wt% of natural surfactants APG and PCG was produced based on the total weight.

[0030] <Example 2>

[0031] A laundry sheet containing 15 wt% of PVA, 5 wt% of PVP, 5 wt% of starch, and 50 wt% of natural surfactants APG and PCG was produced based on the total weight.

[0032] <Example 3>

[0033] A laundry sheet containing 30 wt% PVA, 5 wt% starch, and 60 wt% of a mixture of chemical surfactants SLS (Sodium Lauryl Surface) and SLES (Sodium Laureth Surface) was produced based on the total weight.

[0034] Experimental Example 1

[0035] Tensile strength is one of the measures of the strength of a material. If the tensile strength is '10' or higher, the sheet is strong and maintains its shape stably, but requires a lot of force to tear it. If the tensile strength is '4~9', the sheet is strong and maintains its shape stably, but is easily torn by human force. If the tensile strength is less than '3', the sheet is not strong and has difficulty maintaining its shape, so it breaks.

[0036] Experimental Example 2

[0037] The re-attachment prevention power refers to the ability of a laundry sheet (1) to prevent dust, contaminants, etc. from attaching to laundry. If dust does not attach well, it is ‘high’, and if dust attaches well, it is ‘low’.

[0038]

[0039] The working conditions in Table 1 above are as follows.

[0040] (1) Sheet specifications: width 10mm, length 10mm, thickness 0.03mm

[0041] (2) Tensile strength measuring instrument: Frankpti's paper tensile strength tester

[0042] (3) Method: Put the laundry and the example in the washing machine, set the washing time to 1 hour and the water height to 40 cm, operate the washing machine, dry the laundry, and spray dust and contaminants on the laundry.

[0043]

[0044] As shown in Table 1, a laundry sheet containing a large amount of PVA exceeding 15 wt% and not containing PVP has low tensile strength and easily attracts dust, making it unsuitable, whereas a laundry sheet containing 15 wt% or less of PVA and containing PVP has high tensile strength and does not easily attract dust, making it most preferable as a laundry sheet. More specifically, a laundry sheet containing 10 wt% of PVA, 5 wt% of PVP, 6 wt% of starch, and 48 wt% of natural surfactants APG and PCG, relative to the total weight, may be most preferable.

[0045] Through this, the sheet-type laundry detergent (1) of the present invention contains less PVA than the 15 to 30 wt% contained in conventional sheet-type detergents, so that it can contain more active ingredients necessary for washing, thereby improving cleaning power and enabling the sheet to be made smaller, making it more convenient to store and use. In addition, by adding PVP, the tensile strength of the sheet can be further strengthened, and the shape of the sheet can be stably maintained even when stored for a long time, and when tearing off the sheet and using it, only the desired part can be torn, making it easy to use, and re-attachment can be prevented, thereby preventing dust or contaminants from sticking to washed clothes or laundry. In addition, by using a natural surfactant, environmental pollution can be reduced when using the detergent.

[0046]

[0047] The surfactant may include 44 to 46 wt% of the anionic surfactant AOS-1416, 2 to 4 wt% of the anionic surfactant PCG, and 6 to 14 wt% of the nonionic surfactant APG. For example, the surfactant may include 45 wt% of the anionic surfactant AOS-1416, 3 wt% of the anionic surfactant PCG, and 12 wt% of the nonionic surfactant APG, based on the total weight.

[0048]

[0049] To aid in understanding the present invention, the following examples are presented. However, these examples are provided solely to facilitate a better understanding of the present invention, and the scope of the present invention is not limited by these examples.

[0050]

[0051] Example: Environmental contamination test

[0052] <Example 1>

[0053] A laundry sheet was produced using natural surfactants, including 40 wt% of the anionic surfactant AOS-1416, 3 wt% of the anionic surfactant PCG, and 12 wt% of the nonionic surfactant APG, based on the total weight.

[0054] <Example 2>

[0055] A laundry sheet was produced using natural surfactants, including 45 wt% of the anionic surfactant AOS-1416, 3 wt% of the anionic surfactant PCG, and 10 wt% of the nonionic surfactant APG, based on the total weight.

[0056] <Example 3>

[0057] A laundry sheet was produced using a chemical-based surfactant containing 60 wt% of a mixture of SLS (Sodium Lauryl Surface) and SLES (Sodium Laureth Surface) relative to the total weight.

[0058] Experimental Example 1

[0059] The level of carcinogen nitrosamine that laundry contacts and exposes the skin to. The higher the level of nitrosamine, the greater the threat to the human body, and the lower the level of nitrosamine, the lower the threat to the human body. If nitrosamine is detected in 4 or more randomly selected locations on the laundry, it is classified as "Danger," "Warning" if detected in less than 4 locations, and "Good" if detected in only 1 location.

[0060] Experimental Example 2

[0061] The level of chemical accumulation detected in the wash water discharged after washing. Higher levels indicate a greater negative impact on the environment, while lower levels indicate less impact. If non-biodegradable chemicals such as PFAS and Sb (anthomino) are detected in the wash water, it is classified as "hazardous," and if not detected, it is classified as "non-hazardous."

[0062]

[0063] The working conditions in Table 2 above are as follows.

[0064] (1) Weight of laundry: 10kg

[0065] (2) Method: Put the laundry and the example in the washing machine and operate the washing machine for 1 hour with the water height set to 40 cm.

[0066]

[0067] As shown in Table 2, laundry sheets containing chemical-based surfactants are not suitable because they detect excessive amounts of nitrosamine, and laundry sheets containing natural surfactants are most preferable as laundry sheets because they detect a small amount of nitrosamine and emit less chemical emissions when mixed with water. More specifically, laundry sheets using natural surfactants containing 45 wt% of the anionic surfactant AOS-1416, 3 wt% of the anionic surfactant PCG, and 10 wt% of the nonionic surfactant APG relative to the total weight may be most preferable.

[0068] Through this, the laundry sheet (1) of the present invention can further reduce environmental pollution and solve the chronic problem of the potential carcinogen nitrosamine, which has been a problem with chemical-based surfactants. In addition, it can prevent problems such as endocrine disruption, dermatitis, hair loss, dermatitis, and atopy caused by skin exposure to chemical product accumulation and chemical metabolites remaining in laundry such as clothes and bedding due to chemical surfactants, and it can further reduce environmental pollution because less chemical substances are leaked into the washing water used to wash the laundry.

[0069]

[0070] The sheet-type laundry detergent (1) may further include 0.1 to 0.6 wt% of sodium benzoate, 0.3 to 1.5 wt% of sodium citric acid, 0.3 to 1.5 wt% of citric acid, and 1 to 6 wt% of salt relative to the total weight.

[0071] The sheet-type laundry detergent (1) may contain, relative to the total weight, 0.3 to 3 wt% of natural soap ingredients, 0.3 to 3 wt% of silk extract, 0.5 to 6 wt% of cyclodextrin, and 0.5 to 6 wt% of multiple enzymes.

[0072]

[0073] To aid in understanding the present invention, the following examples are presented. However, these examples are provided solely to facilitate a better understanding of the present invention, and the scope of the present invention is not limited by these examples.

[0074]

[0075] Example: Results of laundry

[0076] <Example 1>

[0077] A laundry sheet containing 0.3 wt% of sodium benzoate, 0.7 wt% of sodium citrate, 0.7 wt% of citric acid, 4 wt% of salt, 1 wt% of aloe extract, 1 wt% of silk extract, 3 wt% of cyclone dextrin, and 3 wt% of seven enzymes was produced based on the total weight.

[0078] <Example 2>

[0079] A laundry sheet containing 0.3 wt% of sodium benzoate, 0.7 wt% of sodium citrate, 0.7 wt% of citric acid, 4 wt% of salt, and 1 wt% of silk extract was produced based on the total weight.

[0080] Experimental Example 1

[0081] A complex odor is a unit space (1) for 1 minute. ) refers to the composite odor dilution factor (OU) generated per unit of time, and the odor of washed laundry was measured using the air dilution sensory method. If the composite odor is 20 or higher, it is ‘normal’, and if the composite odor is less than 20, it is ‘good’.

[0082] Experimental Example 2

[0083] The level of lint and thread in washed laundry was measured. If the level of lint and thread covers 60% or more of the laundry surface area, it is rated as 'Minor'. If the level of lint and thread covers 20% to 60% of the laundry surface area, it is rated as 'Average'. If the level of lint and thread covers less than 20% of the laundry surface area, it is rated as 'Excellent'.

[0084]

[0085] The working conditions of Table 3 above are as follows.

[0086] (1) Laundry: 10kg

[0087] (2) Method: Put the laundry and the example in the washing machine and operate the washing machine for 1 hour with the water height set to 40 cm.

[0088]

[0089] As shown in Table 3, a laundry sheet composed only of sodium benzoate, sodium citrate, citric acid, salt, and silk extract is not suitable because it does not effectively remove odors and has minimal lint-removing ability, while a laundry sheet containing natural soap ingredients such as sphagnum moss extract, cyclodextrin, and enzymes has a deodorizing function, a lint-removing function due to enzymes, and an environmental pollution reduction effect due to natural soap ingredients, making it the most desirable laundry sheet.

[0090] Through this, the laundry sheet (1) of the present invention has a more excellent deodorizing function, can remove lint from laundry more effectively by adding enzymes, and can further reduce environmental pollution by using a natural soap ingredient, a non-toxic extract.

[0091]

[0092] The most preferable laundry sheet (1) manufactured by the above embodiment may have the following composition ratio.

[0093]

[0094] Figure 2 is a flow chart of a method for manufacturing a sheet-type laundry detergent according to one embodiment of the present invention.

[0095] Referring to FIG. 2, the method for manufacturing a sheet-type detergent may include a maturing step (S10), a foaming step (S20), a coating step (S30), a drying step (S40), a peeling step (S50), and a lamination step (S60).

[0096] The aging step (S10) can age a laundry detergent composition manufactured by adding PVA, PVP, starch and surfactant to purified water in an aging room.

[0097] The maturation step (S10) can mature the detergent composition for 2 to 50 hours at 25 to 70 degrees. For example, the maturation step (S10) can mature the detergent composition for 25 hours at 55 degrees.

[0098] The laundry detergent composition may be a solution prepared by heating a solution of purified water, a surfactant, PVA, PVP, and starch, and mixing sodium hydroxide, sodium citrate, an extract, and a fragrance. For example, the laundry detergent composition may be a solution prepared by heating a solution of purified water, a surfactant, PVA, PVP, and corn starch, and adding sodium hydroxide, sodium citrate, an extract, and a fragrance, and then adjusting the pH to thicken the solution.

[0099] The foaming stage (S20) is the stage where the density of the detergent composition that has gone through the maturation stage (S10) is 0.1 to 0.9 g / , the viscosity can be foamed using a foamer to reach 25,000 to 55,000 cps.

[0100] The foaming step (S20) can adjust the density of the detergent composition by placing the detergent composition that has undergone the maturation step (S10) into a foaming machine. For example, the foaming step (S20) can adjust the density by placing the detergent composition that has undergone the maturation step (S10) into a foaming machine.

[0101] The foaming step (S20) is to increase the density of the detergent composition to 0.1 to 0.9 g / , the viscosity can be foamed at 25,000 to 55,000 cps. For example, the foaming step (S20) can be used to foam the density of the detergent composition to 0.6 g / , viscosity can be 40,000 cps.

[0102]

[0103] To aid in understanding the present invention, the following examples are presented. However, these examples are provided solely to facilitate a better understanding of the present invention, and the scope of the present invention is not limited by these examples.

[0104]

[0105] Example: Neutralization and saponification degree of PVA

[0106] <Example 1>

[0107] The density of the foamed detergent composition in the foaming stage is 0.6 g / , a laundry sheet with a viscosity of 10,000 cps was produced.

[0108] <Example 2>

[0109] The density of the foamed detergent composition in the foaming stage is 0.6 g / , a laundry sheet with a viscosity of 40,000 cps was produced.

[0110] <Example 3>

[0111] The density of the foamed detergent composition in the foaming stage is 0.6 g / , a laundry sheet with a viscosity of 80,000 cps was produced.

[0112] Experimental Example 1

[0113] Degree of polymerization refers to the number of repeating units occurring within a polymer molecule. In this experimental example, it refers to the degree of viscosity. A certain amount of detergent composition was poured onto a belt to check the viscosity. A high degree of polymerization means high viscosity, a medium degree of polymerization means moderate viscosity, and a low degree of polymerization means low viscosity.

[0114] Experimental Example 2

[0115] The degree of saponification is a numerical value indicating the degree of hydrolysis of PVA. PVA is manufactured by hydrolyzing the intermediate product PVAc, but since it does not dissolve in water at room temperature when completely hydrolyzed, it is recommended to control the hydrolysis to extract PVA that is easily dissolved at room temperature. If the degree of saponification is high (over 98%), it is difficult to dissolve in water at room temperature, and at an appropriate value (88 to 98%), the solubility in water is good.

[0116]

[0117] As shown in Table 5, if the viscosity is less than 30,000 cps, the detergent composition flows quickly, making it difficult to form a certain thickness, which is not suitable. If the viscosity is more than 50,000 cps, the flowability is poor, making it difficult to form a sheet on a conveyor belt, which is not suitable. A viscosity of 30,000 to 50,000 cps is most desirable.

[0118] Through this, the method for manufacturing a laundry sheet of the present invention can more easily form a sheet of a certain thickness by appropriately maintaining the polymerization degree and saponification degree of PVA, and can maintain an appropriate saponification degree of 88 to 98% of the laundry sheet, so that the cleaning power, solubility, and flexibility are more excellent and satisfactory.

[0119] The application step (S30) can be used to place the foamed detergent composition from the foaming step (S20) into a coating liquid container of a comma coating machine and apply it to a release film at a certain thickness.

[0120] The application step (S30) may apply the detergent composition that has undergone the foaming step (S20) using a coating machine. For example, the application step (S30) may apply the detergent composition that has undergone the foaming step (S20) using one of a comma coater, a knife coater, a roll coater, a spin coater, a direct coater, and a 3-roll reverse coater.

[0121] The application step (S30) may be applied with a thickness of 0.3 to 3.8 mm and may be applied using a release film. For example, the application step (S30) may be applied so as to maintain a gap of 2.0 mm and may be applied using a release film. This allows the layer of the laundry sheet (1) to be protected from the outside and to be easily peeled off when the product is used, thereby maintaining the shape of the fabric well during the manufacturing process of the laundry sheet and enabling easier peeling when peeling later.

[0122] The drying step (S40) can be used to dry only the purified water by placing the release film and the detergent composition that have gone through the application step (S30) into a dryer to make the detergent composition applied to the release film into a fabric.

[0123] The drying step (S40) can be performed by placing the detergent composition that has gone through the application step (S30) into a dryer and drying it to form a fabric from the detergent composition. For example, the drying step (S40) can be performed by placing the detergent composition that has gone through the application step (S30) into a dryer and drying purified water in the detergent composition to form a fabric from the detergent composition.

[0124] The drying step (S40) can dry purified water by setting the dryer temperature to 40 to 210 degrees and the drying speed to 0.3 to 6 m / min. For example, the drying step (S40) can dry purified water in the laundry detergent composition at a temperature of 100 degrees and a drying speed of 5 m / min.

[0125] The peeling step (S50) can peel the laundry detergent composition, which has been maintained in the form of a fabric through the drying step (S40) and from which purified water has been removed, from the release film.

[0126] The peeling step (S50) can separate the fabric that has been formed through the drying step (S40) from the release film. For example, the peeling step (S50) can separate the release film from the laundry detergent composition that has been formed through the drying step (S40).

[0127] The release film may be a silicone-based release film.

[0128] The peeling step (S50) is such that the peeled fabric has a thickness of 0.3 to 3.8 mm and a density of 0.03 to 0.35 g / It can be. For example, in the peeling step (S50), the thickness of the fabric from which the release film is peeled is 2.0 mm, and the density is 0.2 g / It could be.

[0129] The lamination step (S60) sprays water mist onto the detergent composition in the form of fabric that has been formed in the peeling step (S50), and then layers 1 to 10 of the detergent compositions in the form of fabrics, and then puts them in a dryer to laminate multiple laundry detergent compositions in the form of fabrics. For example, the lamination step (S60) sprays water mist onto one side of multiple fabrics, and then layers 2 to 8 fabrics into a roll, and then uses a dryer to dry the water while laminating them.

[0130] The dryer temperature in the compositing stage (S60) can be 50 to 130 degrees.

[0131] Although the embodiments of the present invention have been described above, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same spirit, but this will also be considered to fall within the spirit of the present invention.

Claims

1. Aging step in which a laundry detergent composition manufactured by adding PVA, PVP, starch and surfactant to purified water is aged in an aging room; The density of the laundry detergent composition that has gone through the above maturation step is 0.1 to 0.9 g / , a foaming step in which the viscosity is foamed using a foamer to reach 25,000 to 55,000 cps; A coating step of putting the foamed detergent composition through the foaming step into a coating liquid container of a comma coating machine and applying it to a release film at a certain thickness; A drying step of placing the release film and the detergent composition that have gone through the coating step into a dryer to dry only the purified water and to fabricate the detergent composition applied to the release film; A peeling step of peeling the laundry detergent composition, which is maintained in the form of a fabric through the drying step and from which the purified water has been removed, from the release film; and A method for manufacturing a sheet-type laundry detergent, comprising a step of spraying water mist onto the laundry detergent composition in the form of a fabric through the above-mentioned peeling step, overlapping 1 to 10 layers, and then placing the composition in the dryer to combine multiple laundry detergent compositions in the form of fabric.

2. In paragraph 1, The above laundry detergent composition, By total weight, The above PVA is 7 to 17 wt%; The above PVP is 2 to 8 wt%; and A method for manufacturing a sheet-type laundry detergent comprising 2 to 8 wt% of the above starch.

3. In paragraph 2, The above surfactant is, 40 to 60 wt% of AOS-1416, an anionic surfactant; 2 to 8 wt% of PCG, an anionic surfactant; and A method for manufacturing a sheet-type laundry detergent containing 6 to 14 wt% of APG, a nonionic surfactant.

4. In paragraph 2, 0.1 to 0.6 wt% of sodium benzoate; 0.3 to 1.5 wt% of sodium citrate; 0.3 to 1.5 wt% citric acid; and A method for manufacturing a sheet-type laundry detergent further comprising 1 to 6 wt% of salt.

5. In paragraph 2, 0.3 to 3 wt% of natural soap ingredients; 0.3 to 3 wt% of silk extract; 0.5 to 6 wt% of cyclodextrin; and A method for manufacturing a sheet-type laundry detergent further comprising 0.5 to 6 wt% of a plurality of enzymes.

6. In paragraph 1, The above maturation step is, A method for manufacturing a sheet-type laundry detergent, characterized in that the above laundry detergent composition is aged for 2 to 50 hours at 25 to 70 degrees.

7. In paragraph 1, The above application step is, A method for manufacturing a sheet-type laundry detergent, characterized in that it is applied with a thickness of 0.3 to 3.8 mm.

8. In paragraph 1, The above drying step is, A method for manufacturing a sheet-type laundry detergent, characterized in that the dryer temperature is set to 40 to 210 degrees and the drying speed is set to 0.3 to 6 m / min to dry purified water.

9. In paragraph 1, The above peeling step is, The above-mentioned peeled fabric has a thickness of 0.3 to 3.8 mm and a density of 0.03 to 0.35 g / A method for manufacturing a sheet-type laundry detergent, characterized by:

10. In paragraph 1, The above-mentioned step is, A method for manufacturing a sheet-type laundry detergent, characterized in that the dryer is at 50 to 130 degrees.

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