Water-soluble detergent sheet, and preparation method and use method therefor

Abstract

The present invention relates to a water-soluble detergent sheet, and a preparation method and a use method therefor. The water-soluble detergent sheet comprises the following components in parts by mass: 12-35 parts of a film-forming agent, 0-3 parts of a thickening agent, 0-10 parts of a water softening agent, 15-50 parts of an anionic surfactant, 1-10 parts of a nonionic surfactant, 1-10 parts of a zwitterionic surfactant, 0-10 parts of a solubilizer, 1-10 parts of an acrylate polymer, 0-10 parts of a plant extract, and 0-1 part of a preservative. In the form of the product as provided, a detergent, when being used, can be uniformly sprayed out without much effort, generates plenty of foam, keeps in contact with stains for a long period of time, has a better decontamination effect, and is convenient to transport.

Description

A water-soluble detergent sheet and its preparation method and use method Technical Field

[0001] The present invention relates to the field of cleaning materials, and more particularly to a water-soluble cleaning agent sheet and a preparation method and a use method thereof. Background Art

[0002] Currently, the market for cleaning products is experiencing a dazzling and diverse development trend, encompassing a wide range of cleaning materials, from liquid detergents to solid concentrated detergents. Currently, cleaning agents on the market are primarily water-based, formulated with surfactants. Especially for household hard surface cleaners, these spray-on cleaning products are primarily provided to consumers in liquid form.

[0003] To ensure that the detergent in the spray bottle can be sprayed more evenly and easily, the concentration of active ingredients in the detergent is generally low. This results in multiple sprays and wipes required to clean difficult stains, significantly extending the cleaning time.

[0004] At the same time, because the concentration of active ingredients is generally low, the detergent foam produced by the spray bottle is sparse and quickly disperses or slides off the surface of the stain, making it difficult to stay on the surface. This is especially true for vertical surfaces such as walls, bathrooms, car bodies, and glass, where it is difficult for the detergent to fully contact the stain, greatly reducing the cleaning effect.

[0005] Furthermore, when transporting large quantities of liquid cleaning products, there is a risk of leakage. Furthermore, using large amounts of water as a base for transportation also generates unnecessary waste and increases consumer costs.

[0006] In summary, there is still room for improvement.

[0007] Summary of the Invention

[0008] To address the above-mentioned drawbacks, the present application provides a water-soluble detergent sheet, a method for preparing the sheet, and a method for using the sheet. The product provided by the present application allows the detergent to be evenly and easily sprayed during use, producing abundant foam and maintaining prolonged contact with stains, resulting in a better cleaning effect. Furthermore, the product is easy to transport.

[0009] In a first aspect, the present application provides a water-soluble detergent sheet, which adopts the following technical solution:

[0010] A water-soluble detergent sheet comprising the following components, in parts by mass: 12-35 parts of a film-forming agent, 0-3 parts of a thickener, 0-10 parts of a water softener, 15-50 parts of anionic surfactant, 1-10 parts of a nonionic surfactant, 1-10 parts of a zwitterionic surfactant, 0-10 parts of a solubilizer, 1-10 parts of an acrylic polymer, 0-10 parts of a plant extract, and 0-1 part of a preservative;

[0011] The anionic surfactant is a mixture of one or more of α-olefin sulfonate, dodecylbenzenesulfonate, disodium C-(2-cocoamidoethyl) succinate sulfonate, and lauryl sulfate;

[0012] The nonionic surfactant is a mixture of one or more of alkyl glycoside, maltoside, coconut oil fatty acid diethanolamide, and cocamide methyl MEA;

[0013] The zwitterionic surfactant is a mixture of one or more of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, cocoylamidopropyl betaine, dodecyldimethylamine oxide, disodium cocoamphodiacetate, and sodium coconut fatty acid imidazoline dipropionate.

[0014] By defining the optimal ratio of specific unethoxylated surfactants, the resulting product effectively emulsifies stains while producing a copious amount of thick foam. The inclusion of a water-based acrylic polymer within the specific surfactant formulation gives the product's aqueous solution excellent viscosity when sprayed, innovatively incorporating "spray-on" technology into the formulation. This product effectively increases contact time with the surface of the stain, thereby enhancing its cleaning ability, which is particularly important for cleaning vertical surfaces. Furthermore, when sprayed using a spray bottle, the aqueous detergent solution exhibits excellent shear resistance, allowing the detergent-containing aqueous solution to form a thick, dense foam that adheres well to the stain's surface, increasing its contact time and thus facilitating prolonged adsorption, wetting, and emulsification.

[0015] The product provided herein is in sheet form and can be used after diluting with water when cleaning is required. This product demonstrates excellent stain removal capabilities, effectively removing common everyday stains with a simple, effortless rinse. It is simple and convenient to use, boasts strong cleaning power, and easily removes dirt, reducing cleaning time. This product contains no ethoxylated ingredients, effectively preventing the production of harmful substances such as 1,4-dioxane during use.

[0016] Preferably, the anionic surfactant is a combination of lauryl sulfate, α-olefin sulfonate, and disodium C-(2-cocoamidoethyl) succinate sulfonate;

[0017] The nonionic surfactant is a combination of alkyl glucoside and cocamide methyl MEA;

[0018] The zwitterionic surfactant is a combination of monosodium salt of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative, disodium cocoamphodiacetate, and sodium coconut fatty acid imidazoline dipropionate.

[0019] By adopting the above technical solution and further selecting and compounding specific types of anionic surfactants, nonionic surfactants, and zwitterionic surfactants, a richer foam is produced. Furthermore, through special combination with acrylic polymers, the product aqueous solution has optimized shear-thinning rheological properties, making it shear-resistant during use. This allows the detergent aqueous solution to be evenly sprayed onto the surface of the stain in the form of a viscous foam that is less likely to slide off immediately, thereby increasing its contact time with the stain. This also prolongs the adsorption, wetting, and emulsification properties, thereby enhancing its cleaning power. Furthermore, the excellent spray-adhesion effect allows the detergent spray to be sprayed and thickened in a targeted and controlled manner on a small area of ​​the stain, leaving other uncontaminated areas unaffected, significantly reducing cleaning time and making it more convenient and practical.

[0020] Preferably, in the anionic surfactant, the mass ratio of lauryl sulfate, α-olefin sulfonate, and disodium C-(2-cocoamidoethyl) succinate sulfonate is (20-30):(3-8):(1-3);

[0021] Among the nonionic surfactants, the mass ratio of alkyl glucoside and cocamide methyl MEA is (1-3): (2-5);

[0022] In the zwitterionic surfactant, the mass ratio of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, disodium cocoamphodiacetate, and sodium coconut fatty acid imidazoline dipropionate is (1-3):(1-3):(0.1-2).

[0023] By adopting the above technical solution, the usage of various surfactants is further limited, which can produce richer and finer foam, thereby more fully contacting the stains; and the rich and fine foam can be spread more quickly and evenly on the surface of the area to be cleaned, forming a thin layer of sticky foam, which is conducive to further extending the residence time of the foam in the area to be cleaned, thereby improving the decontamination ability.

[0024] Preferably, the mass fraction of the acrylic ester polymer is 2-6 parts.

[0025] By adopting the above technical solution, after further limiting the dosage of various surfactants, and then further limiting the dosage of acrylic polymer, the resulting rich foam has an appropriate viscosity, not too thick, and can be sprayed in a targeted manner on a specific area. It also has an appropriate contact time with the stain, making it easy to wipe clean.

[0026] Preferably, the film-forming agent is polyvinyl alcohol, polyvinyl alcohol cross-linked polymer or a combination of one or more thereof.

[0027] Preferably, the mass ratio of the film former to the thickener is (20-26): (0.5-1.5).

[0028] The sheet is prepared by selecting water-soluble polyvinyl alcohol and polyvinyl alcohol cross-linked polymers of different molecular weights and mixing them with thickeners in a specific proportion. In the formula system, it has the function of protecting colloids, swells when encountering water when dissolved, and has multiple effects of promoting dissolution.

[0029] Water-soluble detergent sheets are available in plastic-free packaging and dissolve quickly and fully in water when used.

[0030] Preferably, the thickener is any one or more combinations of water-soluble high molecular polymer gums and cellulose.

[0031] Preferably, the water-soluble polymer gum is a mixture of one or more of xanthan gum, gum arabic, guar gum, and locust bean gum. The cellulose is a combination of one or more of carboxymethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, and polyanionic cellulose.

[0032] The above thickener is combined with the acrylic polymer to further enhance the viscosity of the foam formed by the re-injection, and the viscosity is more stable and lasting.

[0033] It is worth noting that although a thickener is used in this application, after the sheet is diluted with water, although the detergent aqueous solution has a certain consistency, it is still in a relatively thin state and does not affect spraying. The detergent aqueous solution of this application finally forms a high-viscosity foam after spraying.

[0034] Preferably, the solubilizer includes a combination of one or more of alcohol solubilizers and ether solubilizers.

[0035] Preferably, the alcohol solubilizer is a combination of one or more of ethanol, ethylene glycol, glycerol, propylene glycol, dipropylene glycol, isopropyl alcohol, pentanediol, butylene glycol, and isohexylene glycol. The ether solubilizer is a combination of one or more of ethyl ether, n-ethyl ether, dimethyl ether, ethylene glycol ether, and dipropylene glycol ether.

[0036] Preferably, the solubilizer is isohexylene glycol and dipropylene glycol ether, and the mass ratio of isohexylene glycol and dipropylene glycol ether is 5:(1-5).

[0037] By adopting the above technical solution and further selecting solubilizers of specific types and proportions, it is helpful to better remove stains.

[0038] Preferably, the plant extract is at least one of a soapberry extract and a camellia oleifera extract.

[0039] Preferably, the plant extract is soapberry extract and camellia oleifera extract, and the mass ratio of soapberry extract to camellia oleifera extract is 1:(0.8-1.2), with the mass of soapberry extract as the benchmark.

[0040] By adopting the above technical solution and compounding an appropriate amount of specific plant extracts, it helps to further improve the foam performance, reduce the irritation of the formula system, and help reduce the corrosive performance on the clean surface, thereby extending the home use time.

[0041] Preferably, the water softener is a combination of any one or more of trisodium methylglycine diacetate, tetrasodium ethylenediaminetetraacetate, sodium gluconate, trisodium dicarboxymethylalanine, tetrasodium dicarboxymethylaspartate and sodium citrate.

[0042] By adopting the above technical solution and selecting a specific type of water softener, we can achieve a better softening effect on everyday tap water (hard water). Furthermore, the addition of sodium citrate in conjunction with other water softeners helps the sheet dissolve better during use. Using sodium citrate as a water softener is also more comprehensive and environmentally friendly.

[0043] Preferably, the preservative is a high temperature resistant preservative, and the preservative is at least one of hydroxydichlorodiphenyl ether, dichlorobenzyl alcohol, methylparaben, and ethylparaben.

[0044] In a second aspect, the present application provides a method for preparing a water-soluble detergent sheet, using the following technical solution:

[0045] A method for preparing a water-soluble detergent sheet comprises the following steps: mixing various raw materials with water until uniform, drying and then sheeting to obtain the sheet.

[0046] By adopting the above technical solution, the detergent is made into sheets, which do not need to be transported together with water during transportation, thereby improving safety and stability and reducing costs.

[0047] Preferably, a method for preparing a water-soluble detergent sheet comprises the following steps:

[0048] Prepare water in an amount 2-3 times the mass of the film-forming agent, mix the water with the thickener, heat it to 50-60°C, then add the film-forming agent and stir, and continue to heat it to 80-90°C until the material is completely dissolved and evenly dissolved, then stop heating.

[0049] Then continue to add water softener, anionic surfactant, nonionic surfactant, zwitterionic surfactant, and solubilizer, and stir until dissolved evenly.

[0050] The acrylic polymer is pre-mixed with water, diluted and dissolved, and then added to the above materials, and stirred until uniformly dissolved; the mass ratio of the acrylic polymer to water is 1: (1-3).

[0051] Then continue to add plant extract and preservative, stir and dissolve evenly to obtain slurry.

[0052] The slurry is dried, demoulded and sliced ​​to obtain sheets.

[0053] In a third aspect, the present application provides a method for using a water-soluble detergent sheet, using the following technical solution:

[0054] A method for using a water-soluble detergent sheet comprises the following steps: diluting the sheet with water in a ratio of 1:(100-1000), dissolving the sheet evenly, placing the sheet in a pressure spray bottle, and then spraying the sheet onto a stained surface for cleaning.

[0055] After the sheet is mixed and diluted with water, it is still a liquid with a certain fluidity in the pressure spray bottle. At the moment of being sprayed out of the pressure spray bottle, due to the effect of force, the detergent water solution instantly turns into thick, dense, rich and delicate foam, which adheres to the surface of the area to be cleaned, thereby increasing the contact time with the stains, prolonging the adsorption, wetting and emulsification time of the stains, and improving the decontamination effect.

[0056] In summary, this application has the following beneficial effects:

[0057] 1. By defining a reasonable ratio between specific unethoxylated surfactants, the resulting product effectively emulsifies stains while producing a large amount of thick foam. The inclusion of a water-based acrylic polymer within the specific surfactant formulation gives the product's aqueous solution excellent viscosity when sprayed, innovatively incorporating "spray-on" technology into the formulation. This effectively increases the contact time between the product and the surface of the stain, thereby enhancing its cleaning ability, which is particularly important for cleaning vertical surfaces. Furthermore, when sprayed using a spray bottle, the detergent solution exhibits excellent shear resistance, allowing the detergent-containing aqueous solution to form a thick, dense foam that adheres well to the stain's surface, increasing its contact time and thus facilitating prolonged adsorption, wetting, and emulsification.

[0058] 2. The sheet material prepared in this application can be packaged without plastic and dissolves quickly and fully in water upon reuse. This product can be prepared into solid sheets of any size. After diluting with a certain proportion of water, it can be used to clean stained surfaces (including vertical surfaces). It is convenient, practical, easy to transport and store, and suitable for large-scale mass production.

[0059] 3. This product does not contain any ethoxylated ingredients, and avoids the production of harmful ingredients such as 1,4-dioxane during use; it also effectively increases foaming performance, reduces the irritation of the formula system, helps reduce corrosion to clean surfaces, and prolongs home use time. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] FIG1 is a physical picture of the water-soluble detergent sheet of Example 3 of the present application.

[0061] FIG2 is a state diagram of Example 3 of the present application in test 2), and is also the test result of the aqueous solution in test 1.

[0062] FIG3 is a state diagram of comparative example 1 of the present application during detection 2).

[0063] FIG4 is a state diagram of comparative example 2 of the present application during detection 2).

[0064] FIG5 is a state diagram of comparative example 5 of the present application during detection 2).

[0065] FIG6 is a state diagram of comparative example 6 of the present application during detection 2).

[0066] FIG7 is a diagram showing the detection results of the aqueous solution in Experiment 1 of the present application.

[0067] FIG8 is a diagram showing the detection results of the aqueous solution in Experiment 3 of the present application. DETAILED DESCRIPTION

[0068] The present application is further described in detail below with reference to the accompanying drawings and examples.

[0069] The raw materials used in the following examples and comparative examples are all commercially available products.

[0070] Example

[0071] In the following examples and comparative examples:

[0072] The film-forming agent may be polyvinyl alcohol or / and a polyvinyl alcohol cross-linked polymer.

[0073] The thickener may be xanthan gum, gum arabic, hydroxyethyl cellulose, hydroxypropyl methylcellulose, or polyanionic cellulose.

[0074] The water softener can be trisodium methylglycine diacetate, sodium citrate, tetrasodium ethylenediaminetetraacetate, sodium gluconate, and trisodium dicarboxymethylalanine.

[0075] The anionic surfactant may be sodium lauryl sulfate, sodium potassium lauryl sulfate, sodium α-olefin sulfonate, potassium α-olefin sulfonate, sodium dodecylbenzenesulfonate, potassium dodecylbenzenesulfonate, disodium C-(2-cocoamidoethyl) succinate sulfonate.

[0076] Disodium C-(2-cocoamidoethyl) succinate sulfonate was purchased from Evonik, Germany, with the product number TEGOTENS ES501.

[0077] The nonionic surfactant can be alkyl glucoside, coconut oil fatty acid diethanolamide, cocamide methyl MEA.

[0078] The zwitterionic surfactant can be monosodium salt of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative, cocoamidopropyl betaine, dodecyldimethylamine oxide, disodium cocoamphodiacetate, and sodium coconut fatty acid imidazoline dipropionate.

[0079] N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt was purchased from Evonik, Germany, with the product number being REWOTERIC AM KSF 40.

[0080] The solubilizer can be glycerol, propylene glycol, isohexylene glycol, dipropylene glycol butyl ether, dipropylene glycol, or pentylene glycol.

[0081] The acrylic polymer may be acrylic polymer CrystaSense Sapphire or acrylic (ester) VA copolymer SF-1.

[0082] The plant extract can be soapberry extract or camellia oleifera extract.

[0083] The preservative can be hydroxydichlorodiphenyl ether or dichlorobenzyl alcohol.

[0084] The selection and dosage of specific substances in each example are detailed in Table 1.

[0085] Example 1

[0086] A water-soluble detergent sheet comprises the following components: a film former, a thickener, a water softener, an anionic surfactant, a nonionic surfactant, a zwitterionic surfactant, a solubilizer, an acrylic polymer, a plant extract, and a preservative.

[0087] The specific selection and dosage of each raw material are shown in Table 1.

[0088] The present application also discloses a method for preparing a water-soluble detergent sheet, comprising the following steps:

[0089] (1) Weigh water twice the weight of the film-forming agent, add the water and thickener into the emulsifier, and stir to dissolve evenly. Turn on the heat and raise the temperature to 55°C. Add the film-forming agent while stirring homogeneously. Continue stirring and heating to 85°C until the material is completely dissolved and evenly dissolved, then stop heating.

[0090] (2) While stirring, add water softener, anionic surfactant, nonionic surfactant, zwitterionic surfactant and solubilizer into the emulsifying pot in sequence and stir until they are evenly dissolved.

[0091] (3) Weighing water in an amount twice the weight of the acrylic polymer, then mixing this water with the acrylic polymer, diluting and dissolving the mixture, and stirring the mixture to obtain an acrylic polymer solution.

[0092] Add the acrylic polymer solution into the emulsifying pot and stir to dissolve evenly.

[0093] (4) Continue to add plant extract and preservative into the emulsifying pot and stir until they are evenly dissolved to obtain a slurry with good stability.

[0094] (5) The prepared slurry is transported to the drying equipment through a pipeline for drying.

[0095] (6) forming, demoulding and slicing to obtain the water-soluble detergent sheet as shown in FIG1 .

[0096] The embodiment of the present application also discloses a method for using a water-soluble detergent sheet, comprising the following steps: diluting the sheet with water in a ratio of 1:500, placing the sheet in a pressure spray bottle after dissolving evenly, and then spraying it onto the surface of the stain for cleaning.

[0097] Examples 2-8

[0098] A water-soluble detergent sheet differs from Example 1 in that the selection and amount of each raw material are different, as shown in Table 1 for details.

[0099] Table 1

[0100] Comparative Example

[0101] Comparative Example 1

[0102] A water-soluble detergent sheet is different from Example 3 in that the nonionic surfactant, the zwitterionic surfactant, and the acrylic polymer are replaced by water.

[0103] That is, the amount of nonionic surfactant, zwitterionic surfactant and acrylic polymer is 0.

[0104] The anionic surfactants are 25 kg of sodium lauryl sulfate, 5 kg of sodium α-olefin sulfonate, and 2 kg of sodium dodecylbenzene sulfonate.

[0105] Comparative Example 2

[0106] A water-soluble detergent sheet is different from Example 3 in that the nonionic surfactant and the zwitterionic surfactant are replaced by water.

[0107] That is, the amount of nonionic surfactant and zwitterionic surfactant used is 0.

[0108] The anionic surfactants are 25 kg of sodium lauryl sulfate, 5 kg of sodium α-olefin sulfonate, and 2 kg of sodium dodecylbenzene sulfonate.

[0109] Comparative Example 3

[0110] A water-soluble detergent sheet is different from Example 3 in that the nonionic surfactant and the acrylic polymer are replaced by water.

[0111] That is, the amount of nonionic surfactant and acrylic polymer used is 0.

[0112] The anionic surfactants are 25 kg of sodium lauryl sulfate, 5 kg of sodium α-olefin sulfonate, and 2 kg of sodium dodecylbenzene sulfonate.

[0113] The zwitterionic surfactant is 2kg of disodium cocoamphodiacetate, 1kg of sodium coconut fatty acid imidazoline dipropionate, and 2kg of monosodium salt of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative.

[0114] Comparative Example 4

[0115] A water-soluble detergent sheet differs from Example 3 in that the nonionic surfactant is replaced by water.

[0116] That is, the amount of nonionic surfactant used is 0.

[0117] The anionic surfactants are 25 kg of sodium lauryl sulfate, 5 kg of sodium α-olefin sulfonate, and 2 kg of sodium dodecylbenzene sulfonate.

[0118] The zwitterionic surfactant is 2kg of disodium cocoamphodiacetate, 1kg of sodium coconut fatty acid imidazoline dipropionate, and 2kg of monosodium salt of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative.

[0119] Comparative Example 5

[0120] A water-soluble detergent sheet is different from Example 3 in that the zwitterionic surfactant and the acrylic polymer are replaced by water.

[0121] That is, the amount of zwitterionic surfactant and acrylic polymer is 0.

[0122] The anionic surfactants are 25 kg of sodium lauryl sulfate, 5 kg of sodium α-olefin sulfonate, and 2 kg of sodium dodecylbenzene sulfonate.

[0123] The nonionic surfactants were 2 kg alkyl glucoside and 3 kg cocamide methyl MEA.

[0124] Comparative Example 6

[0125] A water-soluble detergent sheet differs from Example 3 in that the zwitterionic surfactant is replaced by water.

[0126] That is, the amount of zwitterionic surfactant used is 0.

[0127] The anionic surfactants are 25 kg of sodium lauryl sulfate, 5 kg of sodium α-olefin sulfonate, and 2 kg of sodium dodecylbenzene sulfonate.

[0128] The nonionic surfactants were 2 kg alkyl glucoside and 3 kg cocamide methyl MEA.

[0129] Comparative Example 7

[0130] A water-soluble detergent sheet, which differs from Example 3 in that:

[0131] The anionic surfactant is 25 kg of sodium fatty alcohol polyoxyethylene ether sulfate, 5 kg of sodium fatty alcohol methyl ester sulfonate, and 2 kg of sodium fatty acid methyl ester ethoxysulfonate.

[0132] The nonionic surfactant is 2kg fatty alcohol polyoxyethylene ether and 1kg isomeric alcohol ether.

[0133] The zwitterionic surfactant is 2 kg of dodecyl dimethyl betaine, 1 kg of sodium lauroyl amphoacetate, and 2 kg of oleamidopropyl dimethyl betaine.

[0134] Performance testing

[0135] 1. Decontamination Effect: The cleaning performance of the sheets of Examples 1-8 and Comparative Examples 1-7 was tested in accordance with Appendix A "Determination of Detergency" of QB / T 4532-2013 "Hard Floor Cleaners," and the detergency (%) is recorded in Table 2.

[0136] The greater the detergency obtained from the test, the better the decontamination effect, and vice versa. Detergency ≥ 90% is considered qualified, otherwise it is considered unqualified.

[0137] Table 2

[0138] According to the comparison of the test data of Examples 1-8 and Comparative Examples 1-7 in Table 2, it can be seen that the sheets prepared in Examples 1-8 of the present application are significantly better in terms of decontamination ability than those of Comparative Examples 1-7.

[0139] 2. Foam performance test:

[0140] Detection 1):

[0141] Prepare 15 25ml glasses of the same size.

[0142] The sheets of Examples 1-8 and Comparative Examples 1-7 were diluted and mixed with water at a ratio of 1:500 to prepare an aqueous solution, which was sprayed into a clean 25 ml glass using a foaming bottle until the foam reached the 25 ml mark on the glass, and excess foam was scraped off the surface.

[0143] The glasses sprayed with foam were placed on the laboratory bench and left to stand for 5 minutes and 10 minutes, and the changes in foam in each glass were observed and recorded in Table 3.

[0144] Detection 2):

[0145] The sheets of Examples 1-8 and Comparative Examples 1-7 were diluted and mixed with water at a ratio of 1:500 to prepare an aqueous solution, which was then sprayed onto a clean vertical glass surface using a pressure spray bottle.

[0146] Mark a 100 cm x 100 cm area on a vertical glass surface and draw a horizontal line 4 cm below the area. Aim approximately 12 cm from the center of the area and spray with one pump (5-6 g). Record the time it takes for the foam in the area to slide below the horizontal line and record it in Table 3. Longer times indicate better retention, while shorter times indicate poorer retention.

[0147] Table 3

[0148] According to the test results in Table 3, the functional water-soluble detergent sheet of the embodiment of the present application produces much more foam than that of Comparative Examples 1-7 after standing for five and ten minutes, and the foam morphology has almost no obvious change, and the foam remains dense.

[0149] Comparing the test data of Examples 1-8 and Comparative Examples 1-7 in Tables 2 and 3 shows that the products of Comparative Examples 1-7 not only perform inferior to those of Examples 1-8 in terms of cleaning performance, but also in terms of foam morphology, foam volume, and foam retention time. This indicates that the changes in the formulation system or type of the products in Comparative Examples 1-7 have destroyed the specific formulation effect, and are unable to produce a rich foam that adheres to the cleansing area (especially vertical areas) for a long time.

[0150] Figure 2 is a state diagram of Example 3 in detection 2), Figure 3 is a state diagram of Comparative Example 1 in detection 2), Figure 4 is a state diagram of Comparative Example 2 in detection 2), Figure 5 is a state diagram of Comparative Example 5 in detection 2), and Figure 6 is a state diagram of Comparative Example 6 in detection 2).

[0151] 3. Adhesion performance test:

[0152] The sheet material of Example 3 was diluted and mixed with water at a ratio of 1:1000 to obtain an aqueous solution of Sample 1.

[0153] The sheet material of Example 3 was diluted and mixed with water at a ratio of 1:500 to form an aqueous solution of Sample 2.

[0154] The sheet material of Example 3 was diluted and mixed with water at a ratio of 1:250 to form an aqueous solution of Sample 3.

[0155] Place the above aqueous solutions in commercially available pressure spray bottles, spray them onto the cleaned vertical glass surface, observe and take pictures.

[0156] The test results of the aqueous solution of Test 1 are shown in FIG7 , the test results of the aqueous solution of Test 2 are shown in FIG2 , and the test results of the aqueous solution of Test 3 are shown in FIG8 .

[0157] Comparing Figures 2, 7, and 8, we can see that the diluted water-soluble cleaning sheet adheres well to vertical, smooth surfaces after spraying and does not easily slide off. The foam is concentrated in the cleaned area, and the foam becomes increasingly dense with increasing dilution. This facilitates daily use by adjusting the dilution concentration according to the degree of contamination, avoiding waste and achieving convenience and practicality. Furthermore, the solid sheet form of this product can be packaged without plastic, making it easy to transport and store. This also significantly reduces the use of plastic spray bottles during reuse, reducing waste and reducing white pollution.

[0158] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A water-soluble detergent sheet, characterized in that: The composition comprises the following components in parts by mass: 12-35 parts of film former, 0-3 parts of thickener, 0-10 parts of water softener, 15-50 parts of anionic surfactant, 1-10 parts of nonionic surfactant, 1-10 parts of zwitterionic surfactant, 0-10 parts of solubilizer, 1-10 parts of acrylic polymer, 0-10 parts of plant extract, and 0-1 parts of preservative; The anionic surfactant is a combination of one or more of α-olefin sulfonate, dodecylbenzene sulfonate, disodium succinate-C-(2-cocoylaminoethyl) ester sulfonate, and dodecyl sulfate; The nonionic surfactant is a combination of one or more of alkyl glucoside, maltoside, coconut oil fatty acid diethanolamide, and cocamide methyl MEA; The zwitterionic surfactant is a combination of one or more of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, cocoylamidopropyl betaine, dodecyl dimethylamine oxide, disodium cocoamphodiacetate, and sodium coconut fatty acid imidazoline dipropionate.

2. The water-soluble detergent sheet according to claim 1, characterized in that: The anionic surfactant is a combination of dodecyl sulfate, α-olefin sulfonate, and disodium succinate-C-(2-cocoylaminoethyl) ester sulfonate; The nonionic surfactant is a combination of alkyl glucoside and cocamide methyl MEA; The zwitterionic surfactant is a combination of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative monosodium salt, disodium cocoamphodiacetate, and sodium coco fatty acid imidazoline dipropionate.

3. The water-soluble detergent sheet according to claim 1, characterized in that: In the anionic surfactant, the mass ratio of the dodecyl sulfate, α-olefin sulfonate, and disodium succinate-C-(2-cocoylaminoethyl) ester sulfonate is (20-30):(3-8):(1-3); In the nonionic surfactant, the mass ratio of the alkyl glucoside and cocamide methyl MEA is (1-3): (2-5).

4. The water-soluble detergent sheet according to claim 1, characterized in that: In the zwitterionic surfactant, the mass ratio of the monosodium salt of N-(2-aminoethyl)-N-(2-hydroxyethyl)-β-alanine-N-coconut oil derivative, disodium coconut oil amphoacetate, and sodium coconut oil fatty acid imidazoline dipropionate is (1-3): (1-3): (0.1-2).

5. The water-soluble detergent sheet according to claim 1, characterized in that: The mass fraction of the acrylic ester polymer is 2-6 parts.

6. The multifunctional water-soluble detergent sheet according to claim 1, characterized in that: The film-forming agent is a combination of one or more of polyvinyl alcohol and polyvinyl alcohol cross-linked polymer.

7. The water-soluble detergent sheet according to claim 1, characterized in that: The solubilizer includes a combination of one or more of an alcohol solubilizer and an ether solubilizer.

8. The water-soluble detergent sheet according to claim 1, characterized in that: The plant extract is at least one of a soapberry extract and a camellia oleifera extract.

9. A method for preparing a water-soluble detergent sheet according to any one of claims 1 to 8, characterized in that: The following steps are involved: Prepare water in an amount 2-3 times the mass of the film former, mix the water with the thickener, heat it to 50-60°C, then add the film former and stir, and continue to heat it to 80-90°C until the material is completely dissolved and evenly dissolved, then stop heating; Then continue to add water softener, anionic surfactant, nonionic surfactant, zwitterionic surfactant, solubilizer, and stir until dissolved evenly; Premix the acrylic polymer with water, dilute and dissolve it, then add it to the above materials, and stir until it is evenly dissolved; the mass ratio of the acrylic polymer to water is 1:(1-3); Then continue to add plant extract and preservative, stir and dissolve evenly to obtain slurry; The slurry is dried, demoulded and sliced ​​to obtain sheets.

10. A method for using the water-soluble detergent sheet according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: mixing and diluting the sheet material with water in a ratio of 1: (100-1000), placing the sheet material in a pressure spray pot after being evenly dissolved, and then spraying the sheet material onto the stain surface for cleaning.

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