Clean water laundry sheet and preparation method thereof

Abstract

The invention discloses a clean water laundry sheet and a preparation method thereof, and relates to the technical field of washing products. The laundry sheet is prepared from the following raw materials: a surfactant, water and an auxiliary agent, the laundry sheet contains bubbles, and a cypress pattern channel is formed between the bubbles; the volume ratio of the bubbles is 50-90%. According to the clean water laundry sheet, by adjusting the volume ratio of the bubbles, the bubbles can increase the specific surface area of the sheet and increase the contact area with water, and the cypress channels can be formed between the bubbles and have the effect of capillary tubes, so that when the laundry sheet is placed in water, the bubbles can be separated from each other, and the bubbles can be separated from each other. When the clothes washing sheet is used, water can enter the interior of the sheet along the cedar passage, so that the dissolution of the sheet can be accelerated, and the clothes washing sheet also has an instant dissolving effect under a low-temperature condition, so that the clothes washing sheet can play a role in decontaminating more quickly.

Description

Technical Field

[0001] The invention relates to the technical field of washing products, and in particular to a water washing tablet and a preparation method thereof. Background Art

[0002] Laundry tablets are popular among consumers because they are easy to carry and transport. When used, the tablets are placed in a washing machine along with clothes. When clean water is added to dissolve the tablets, the clothes can be cleaned. In order to make the tablets dissolve quickly, the ingredients of the tablets are required to be water-soluble materials. However, since the tablets are usually rolled into tablets during production, the surface area of ​​the compacted tablets in contact with water is small, resulting in a slow dissolution rate. Especially at low temperatures, the dissolution rate will be greatly reduced, and even the first washing cycle is completed, but the tablets have not yet dissolved, resulting in a decrease in their decontamination ability.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a water laundry tablet and a preparation method thereof, aiming to solve the defect that the existing laundry tablets have a slow dissolution rate under low temperature conditions, resulting in insufficient decontamination effect.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A water laundry tablet, wherein the raw materials for preparing the laundry tablet include: surfactant, water and additives; the laundry tablet contains bubbles, and Plato channels are formed between the bubbles; the volume of the bubbles accounts for 50-90%.

[0007] In the clean water laundry tablet, the volume proportion of the bubbles is 70-85%.

[0008] In the clean water laundry tablet, the diameter of the bubbles is 10 to 1500 μm.

[0009] In the clean water laundry tablet, the curvature radius of the Plato channel is 10 to 1500 μm.

[0010] In the clean water laundry tablet, the raw materials for preparing the laundry tablet include, by mass percentage, 29-70% of surfactant, 29-70% of water and 1-40% of auxiliary agent.

[0011] In the water laundry tablet, the surfactant includes anionic surfactant, cationic surfactant and nonionic surfactant.

[0012] In the water laundry tablet, the surfactant comprises, by mass percentage, 49-99% of anionic surfactant, 0.01-5% of cationic surfactant, and 0.01-50% of nonionic surfactant.

[0013] In the water laundry tablet, the raw materials for preparing the laundry tablet include, by mass percentage, 60% surfactant, 37% water and 3% auxiliary agent; the surfactant includes, by mass percentage, 80% anionic surfactant, 1% cationic active agent and 19% nonionic surfactant.

[0014] A method for preparing a clean water laundry tablet, which is used to prepare the clean water laundry tablet as described above, comprising the steps of: stirring and mixing an auxiliary agent and water, and heating until they are completely dissolved; adding a surfactant, and stirring until they are completely dissolved; foaming, and measuring the viscosity of the system, and after the viscosity meets the requirements, drying and tableting to obtain the clean water laundry tablet.

[0015] In the preparation method of the water laundry tablet, in the viscosity measuring step, the system viscosity that meets the requirements is: at 40-85° C., the viscosity is 2000-30000 mPa.s.

[0016] Beneficial effects:

[0017] The present invention provides a clean water laundry tablet and a preparation method thereof. The clean water laundry tablet adjusts the volume ratio of bubbles, and the bubbles can increase the specific surface area of ​​the sheet, increase the contact area with water, and can form Plato channels between the bubbles. These Plato channels have the effect of capillaries. When the laundry tablet is placed in water, water can enter the interior of the sheet along the Plato channels, thereby accelerating the dissolution of the sheet, and further achieving a quick-dissolving effect under low temperature conditions, so that the laundry tablet can better exert a decontamination effect.

[0018] The preparation method of the laundry sheet can increase the volume proportion of bubbles by adjusting the composition and proportion of the surfactant, while making the formed bubbles have better strength, avoiding bubble rupture or merging, thereby facilitating the formation of more Plato channels and improving the dissolution rate of the sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an enlarged view of the clean water laundry tablet described in Example 1 of the present invention under a microscope.

[0020] Figure 2 This is a physical picture of the clean water laundry tablet described in Example 1. DETAILED DESCRIPTION

[0021] The present invention provides a water washing tablet and a preparation method thereof. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail by the following embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The invention provides a water washing tablet. The raw materials for preparing the washing tablet include: a surfactant, water and an auxiliary agent, wherein the surfactant is used for removing stains from clothes and has a decontamination effect; the water is used as a solvent, and the surfactant and the auxiliary agent can be fully mixed to form a viscous mixture during preparation, so as to form microbubbles; the auxiliary agent includes a combination of one or more of a fragrance raw material, a foaming agent (such as sodium carbonate or sodium bicarbonate), an enzyme preparation, an antibacterial agent, a thickener, and a filler, but is not limited to these components, and can also be other additives with special functional effects. By adding the auxiliary agent, the washing tablet can have corresponding functions, for example, by adding essence or other fragrance raw materials, the washing tablet can have a fragrance-enhancing effect; by adding a certain enzyme preparation, the washing tablet can have an enzymatic hydrolysis function, and the decontamination effect can be further increased; by adding the antibacterial agent, the washing tablet can have an antibacterial effect, and so on. By adding the auxiliary agent, the washing tablet can have specific functions. In the specific implementation process, the corresponding auxiliary agent can be selected according to actual needs. Since the ingredients used to prepare the laundry tablet are completely soluble in water, the laundry tablet can be completely dissolved in water during use, and after being dissolved in water, the water appears clear without turbidity, thus avoiding the situation where residual powder adheres to the surface of clothes to form spots, which is a characteristic of a clear water laundry tablet.

[0023] In the present invention, in order to solve the problem that the laundry sheet is difficult to dissolve under low temperature conditions, the laundry sheet also contains bubbles, and the bubbles can increase the specific surface area of ​​the sheet, increase the contact area between the sheet and water, and between the bubbles, such as three adjacent bubbles, a Plato channel can be formed. The Plato channel has a capillary effect. When the laundry sheet is placed in water, water can penetrate into the sheet along the Plato channel, thereby promoting the rapid disintegration of the sheet, so that the disintegration time of the laundry sheet in water can be less than 45 seconds under low temperature conditions, so that the effective ingredients in the laundry sheet can quickly play a role and have a better decontamination effect.

[0024] Since Plato channels are formed between bubbles, when the proportion of bubbles is high, more Plato channels are formed, and they are easy to connect with each other, which accelerates the dissolution of the laundry sheet. Especially when the bubble diameter is small, more Plato channels are formed and they are interconnected, which greatly accelerates the dissolution of the laundry sheet. Therefore, in order to better form Plato channels, it is necessary to increase the volume proportion of bubbles to more than 50%, such as 50-60%, 50-70%, 70-80%, 80-90% so that the sheet has more Plato channels.

[0025] However, when the volume proportion of bubbles is large, the effective ingredients per unit volume of laundry tablets will decrease. At the same time, if the volume proportion of bubbles is too large, it is easy for bubbles to burst or bubbles to converge to form large bubbles, which is not conducive to the formation of Plato channels. In addition, the diameter of the bubbles will also affect the formation of Plato channels or the radius of the Plato channels. Through research, it is found that when the volume proportion of bubbles is fixed, the larger the diameter of the bubbles, the larger the radius of curvature of the formed Plato channels, which is easy to cause bubbles to merge and form large bubbles, causing the number of Plato channels to decrease; and the smaller the radius of the bubbles, the more Plato channels will be formed, and the curvature radius of the Plato channels will be smaller, and they are easy to connect, forming a capillary phenomenon, which can make water diffuse quickly and accelerate the dissolution of the sheet.

[0026] Specifically, the diameter of the bubble can be 10 to 1500 μm, and a Platonic channel with a curvature radius of 10 to 1500 μm can be formed. For example, the bubble diameter is 10 to 100 μm, 100 to 300 μm, 300 to 800 μm, 600 to 1000, 1000 to 1500 μm, and a Platonic channel with a curvature radius of 10 to 100 μm, 100 to 300 μm, 300 to 800 μm, 600 to 1000, 1000 to 1500 μm can be formed, which facilitates water penetration and accelerates the dissolution of the sheet.

[0027] Preferably, in the laundry sheet, when the volume proportion of the bubbles is 70-85% and the diameter of the bubbles is 300-800 μm, the bubbles are stacked together to form Plato channels with a curvature radius of 300-800 μm, and because the volume proportion of the bubbles is large, these Plato channels are interconnected and can penetrate water more quickly, accelerating the dissolution of the sheet; in addition, during preparation, bubbles with this volume proportion and diameter are difficult to break or merge and are relatively stable.

[0028] In a preferred embodiment, the raw materials for preparing the laundry tablet include, by mass percentage: 29-70% surfactant, 29-70% water and 1-40% additive. This ratio of raw materials has a better decontamination effect and can stabilize the formed bubbles so as to obtain Plato channels.

[0029] Preferably, the surfactant includes anionic surfactant, cationic surfactant and nonionic surfactant. The anionic surfactant includes: anionic surfactants commonly used in laundry tablets include sodium n-octyl sulfate, linear sodium dodecylbenzene sulfonate and 3-allyloxy-2-hydroxy-1-propane sulfonic acid sodium salt, etc.; the cationic surfactant includes quaternary ammonium salt, fatty amine, amine oxide, hexadecyltrimethylammonium bromide, etc.; the nonionic surfactant includes polyoxyethylene nonionic surfactant, fatty acid methyl ester oxyethylene ether, fatty acid glyceride, polyol type, etc., through the compounding of various types of surfactants, it can have better decontamination ability, and the overall hydrophilic-lipophilic balance value of the surfactant can be adjusted. In addition, the addition of cationic surfactants and nonionic surfactants can make the strength of microbubbles higher. When the bubble volume accounts for a large proportion, they will not merge when the accumulation is very tight, which is equivalent to promoting the formation of microbubbles.

[0030] However, the amount of cationic surfactant added should not be too high, as too high will affect the decontamination effect of anionic surfactants, but too little will affect the mechanical strength of bubbles. Through comparative experiments, it was found that when other components and ratios are the same, cationic surfactants and nonionic surfactants are all replaced by anionic surfactants. During the preparation process, even if the amount of injected bubbles is the same, that is, the volume proportion of the bubbles is the same, the diameter of the bubbles is increased, which can easily lead to bubble rupture or uneven distribution, resulting in a decrease in the number of Plato channels, which is not conducive to the dissolution of the sheet. In this regard, in a preferred embodiment, the surfactant includes, by mass percentage: 49-99% anionic surfactant, 0.01-5% cationic surfactant, and 0.01-49% nonionic surfactant. The surfactant with this composition ratio has a better decontamination effect and can make the formed bubbles have a higher strength. During preparation, microbubbles can be formed by injecting gas and stirring at high speed.

[0031] Preferably, the raw materials for preparing the laundry tablet include, by mass percentage, 60% surfactant, 37% water and 3% additive, wherein the surfactant includes, by mass percentage, 80% anionic surfactant, 1% cationic surfactant and 19% nonionic surfactant. The laundry tablet using this composition ratio has a good decontamination effect, and due to the special ratio of anionic surfactant, cationic surfactant and nonionic surfactant, while obtaining a more suitable hydrophilic-lipophilic balance value, the viscosity of the system when melted can be within a reasonable range, thereby preventing the overflow and bursting of bubbles and forming microbubbles.

[0032] The second aspect of the present invention also provides a method for preparing a water-based laundry tablet, which is used to prepare the water-based laundry tablet as described above, and comprises the steps of: stirring and mixing the auxiliary agent and water, and heating until they are completely dissolved; adding an anionic surfactant, stirring until they are completely dissolved; adding a nonionic surfactant, stirring until they are completely dissolved, and cooling to 40-60° C.; adding a cationic surfactant, fully foaming, measuring the viscosity, and drying and tableting after the viscosity is qualified to obtain the water-based laundry tablet.

[0033] In the aforementioned preparation method, the sufficient foaming step is: during the stirring process, air is injected and stirred and sheared at high speed to form microbubbles to achieve the foaming effect; or, a foaming agent is added and the foaming agent is decomposed at a specific temperature to generate bubbles.

[0034] During preparation, in the step of fully foaming, the injection of gas will change the viscosity and apparent density of the system. Therefore, the foaming condition of the system can be judged by measuring the viscosity or apparent density of the system, that is, the volume proportion of bubbles in the system can be understood. Through research, it is found that at 40-85°C, when the viscosity of the system is 2000-30000mPa.s, the volume proportion of bubbles is 50-90%; when the temperature of the system is 55°C and the viscosity is 5000-10000mPa.s, the volume proportion of bubbles is 70-85%. Therefore, by measuring the viscosity of the system at a specific temperature, it is possible to understand whether the volume proportion of bubbles meets the standard.

[0035] To further illustrate the water laundry tablet and preparation method thereof provided by the present invention, the following examples are provided.

[0036] Example 1

[0037] A water laundry tablet, the preparation method of which is as follows: by mass percentage, 60% of surfactant, 37% of water and 3% of auxiliary agent are taken, wherein the surfactant is composed of: 80% of anionic surfactant, 1% of cationic active agent and 19% of nonionic surfactant.

[0038] The auxiliary agent and water were stirred and mixed, and the temperature was raised until they were completely dissolved; anionic surfactant was added, and stirred until they were completely dissolved; nonionic surfactant was added, and stirred until they were completely dissolved, and the temperature was lowered to 55°C; cationic surfactant was added, and foaming was fully performed. When the viscosity of the system was measured to be 7520mPa.s (the system temperature was 55°C at this time), foaming was stopped, and then tableting and drying were performed to obtain a water laundry tablet (the surface of the laundry tablet under a microscope was as follows Figure 1 As shown in the figure, the actual picture is as follows Figure 2 shown).

[0039] Example 2

[0040] A water laundry tablet, the preparation method of which is basically the same as that of Example 1, except that: (1) the raw material components for preparing the water laundry tablet are: 29% surfactant, 31% water and 40% auxiliary agent; (2) when foaming stops, the viscosity of the system is 12600 mPa.s.

[0041] Example 3

[0042] A water-based laundry tablet, the preparation method of which is substantially the same as that of Example 1, except that: (1) the raw material components for preparing the water-based laundry tablet are: 70% surfactant, 29% water and 1% auxiliary agent; and (2) when foaming stops, the viscosity of the system is 5100 mPa.s.

[0043] Example 4

[0044] A water laundry tablet, the preparation method of which is basically the same as that of Example 1, except that: (1) the raw material components for preparing the water laundry tablet are: 29% surfactant, 70% water and 1% auxiliary agent; (2) when foaming stops, the viscosity of the system is 9820 mPa.s.

[0045] Example 5

[0046] A water laundry tablet, the preparation method of which is basically the same as that of Example 1, except that: (1) the composition of the surfactant is: 99% anionic surfactant, 0.01% cationic surfactant, and 0.99% nonionic surfactant; (2) when foaming stops, the viscosity of the system is 14600 mPa.s.

[0047] Example 6

[0048] A water laundry tablet, the preparation method of which is basically the same as that of Example 1, except that: (1) the composition of the surfactant is: 50% anionic surfactant, 5% cationic surfactant, and 45% nonionic surfactant; (2) when foaming stops, the viscosity of the system is 9290 mPa.s.

[0049] Example 7

[0050] A water laundry tablet, the preparation method of which is basically the same as that of Example 1, except that: (1) the composition of the surfactant is: 49% anionic surfactant, 1% cationic surfactant, and 50% nonionic surfactant; (2) when foaming stops, the viscosity of the system is 8810 mPa.s.

[0051] Example 8

[0052] A water laundry tablet, the preparation method of which is basically the same as that of Example 1, except that: (1) the composition of the surfactant is: 94.99% anionic surfactant, 5% cationic surfactant, and 0.01% nonionic surfactant; (2) when foaming stops, the viscosity of the system is 7850 mPa.s.

[0053] Comparative Example 1

[0054] A water laundry tablet, the preparation method of which is substantially the same as that of Example 1, except that in the preparation process, after the cationic surfactant is added, tableting and subsequent steps are directly performed without foaming.

[0055] Comparative Example 2

[0056] A water laundry tablet, the preparation method of which is basically the same as that of Example 1, except that the air injection volume accounts for 30% of the volume of the system, and after the foaming is completed, the viscosity of the system is 45200 mPa.s.

[0057] It should be noted that in all the embodiments, the ingredients of the auxiliary agent are the same, consisting of 30 wt% of fragrance, 30 wt% of softener and 40 wt% of enzyme preparation.

[0058] Performance Testing

[0059] (1) The bubble volume percentage, average diameter of the bubbles and the curvature radius of the Plato channel of the clean water laundry tablets prepared in Examples 1-6 and the clean water laundry tablets prepared in Comparative Examples 1-2 were tested. When testing the average diameter of the bubbles and the average curvature radius of the Plato channel, 10 bubbles or Plato channels were randomly selected for testing and the average value was calculated. The test results are shown in Table 1.

[0060] (2) The performance tests of the clean water laundry tablets prepared in Examples 1-6 and the clean water laundry tablets prepared in Comparative Examples 1-2 were conducted, including detergency test and dissolution rate test. The test results are shown in Table 1. The test method is:

[0061] Detergency test: According to GB / T 13174-2021 "Determination of Detergency and Cycle Washing Performance of Detergents for Clothes", the test specimens are JB-01 dirty cloth, JB-02 dirty cloth, and JB-03 dirty cloth, and the detergency ratio Pi of the detergent sheet is obtained, where Pi ≥ 1.0 is qualified and < 1.0 is unqualified.

[0062] Dissolution rate: Place a 11cm*14cm*1mm laundry tablet in 1L of water at 5°C and measure the dissolution time.

[0063] Table 1. Performance test results

[0064]

[0065]

[0066] As shown in Table 1, the dissolution time of Examples 1-8 is within 45 seconds, and as the volume percentage of bubbles increases, the dissolution time decreases, that is, the dissolution rate of the laundry tablet increases as the volume percentage of bubbles increases. When the volume percentage of bubbles is as high as 90%, the dissolution rate is as fast as 5 seconds. At the same time, as shown in Examples 5-8, the amount of cationic surfactant and nonionic surfactant will affect the diameter of the bubbles. When the amount of both is small, the diameter of the bubbles will increase, which will lead to a decrease in the number of Plato channels and a decrease in the dissolution rate.

[0067] Comparative Example 1 was not foamed, so no Plato channel was formed, resulting in a long dissolution time, and ultimately poor decontamination effect. The bubble ratio of Comparative Example 2 was less than 50%, and the distance between the bubbles was large, resulting in a large curvature radius of the formed Plato channel, which could not be connected to each other, and ultimately took a long time to dissolve.

[0068] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A water laundry tablet, characterized in that: The raw materials for preparing the laundry tablet include: surfactant, water and additives; the laundry tablet contains bubbles, and Plato channels are formed between the bubbles; the volume of the bubbles accounts for 50-90%.

2. The water washing tablet according to claim 1, characterized in that: The volume proportion of the bubbles is 70-85%.

3. The water washing tablet according to claim 2, characterized in that: The diameter of the bubbles is 10 to 1500 μm.

4. The water washing tablet according to claim 1, characterized in that: The curvature radius of the Plato channel is 10 to 1500 μm.

5. The water washing tablet according to claim 1, characterized in that: Calculated by mass percentage, the raw materials for preparing the laundry tablets include: 29-70% of surfactant, 29-70% of water and 1-40% of auxiliary agent.

6. The water washing tablet according to claim 5, characterized in that: The surfactant includes anionic surfactant, cationic surfactant and nonionic surfactant.

7. The water washing tablet according to claim 6, characterized in that: Calculated by mass percentage, the surfactant includes: 49-99% of anionic surfactant, 0.01-5% of cationic surfactant, and 0.01-50% of nonionic surfactant.

8. The water washing tablet according to claim 7, characterized in that: The raw materials for preparing the laundry tablets include, by mass percentage, 60% surfactant, 37% water and 3% additive; the surfactant includes, by mass percentage, 80% anionic surfactant, 1% cationic active agent and 19% nonionic surfactant.

9. A method for preparing a water laundry tablet, characterized in that: The method is used to prepare the clean water laundry tablet as described in any one of claims 1 to 8, and the method comprises the steps of: stirring and mixing the auxiliary agent and water, and heating until they are completely dissolved; adding a surfactant, and stirring until they are completely dissolved; foaming, measuring the viscosity of the system, and after the viscosity meets the requirements, drying and tableting to obtain the clean water laundry tablet.

10. The method for preparing a clean water laundry tablet according to claim 9, characterized in that: In the system viscosity step, the system viscosity that meets the requirements is: at 40-85° C., the viscosity is 2000-30000 mPa.s.

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