A process for the preparation of an effervescent washing product and an effervescent washing product

Abstract

The application discloses a preparation method of an effervescent washing product and the effervescent washing product, and aims at solving the technical problem that the washing active ingredient is easy to be lost and the washing power is reduced due to the effervescent reaction and the washing agent dissolution at the same time in the prior effervescent washing product. The preparation method comprises the following steps: combining an acid body and an alkali body into an effervescent core, wherein the effervescent core is configured to enter an effervescent state after meeting water; mixing a surfactant and an additive to obtain a washing shell powder; sending the effervescent core and the washing shell powder into a pressing forming mold together, so that the washing shell powder is coated outside the effervescent core, and then the washing shell powder is pressed to form a washing shell coated with the effervescent core. Through the above design, the washing active ingredient in the washing shell layer has been fully dissolved and acts on the surface to be cleaned before the effervescent reaction occurs, so that the effective utilization rate and the actual washing power of the washing agent are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of washing product technology, and in particular to a method for preparing an effervescent washing product and the effervescent washing product itself. Background Technology

[0002] Effervescent detergent products are a new type of solid detergent that combines active detergent ingredients with an effervescent disintegration system. The working principle is to use an acidic body (mainly citric acid) and an alkaline body (mainly sodium bicarbonate) as disintegrants. When they come into contact with water, an acid-base neutralization reaction occurs to produce carbon dioxide gas, which promotes the rapid disintegration and dispersion of the product, thereby releasing the active detergent ingredients.

[0003] Currently, existing effervescent detergent products are typically produced by directly mixing acidic and alkaline substances with detergent active ingredients and additives, followed by compression molding, or by processing them into effervescent granules through granulation, drying, sizing, and blending. In these product structures, the acidic, alkaline, and detergent active ingredients coexist and mix within the product. Upon contact with water, all three dissolve and react simultaneously; that is, effervescent disintegration and detergent dissolution occur at the same time.

[0004] Because the gas produced by effervescent disintegration is released in large quantities before the detergent has fully dissolved, on the one hand, the bubbles escape rapidly, carrying some of the active detergent ingredients that fail to fully act on the surface to be cleaned and are lost as they rise with the bubbles, reducing the effective utilization rate of the detergent; on the other hand, the bubbles generated by the vigorous effervescent reaction also form a foam layer on the liquid surface, further weakening the disturbance and mass transfer effect of the water flow on the detergent dissolution, resulting in a decrease in actual washing power.

[0005] Therefore, finding a technical solution that can solve the above-mentioned technical problems has become an important research topic for those skilled in the art. Summary of the Invention

[0006] This invention discloses a method for preparing an effervescent detergent product and the effervescent detergent product, which solves the technical problem that existing effervescent detergent products suffer from easy loss of active detergent ingredients and reduced detergent power due to the simultaneous occurrence of effervescent reaction and detergent dissolution.

[0007] The present invention provides a method for preparing an effervescent detergent product, comprising the following steps:

[0008] An acidic body and a basic body are combined to form an effervescent core, which is configured to enter an effervescent state upon contact with water.

[0009] The surfactant and additives are mixed to obtain a washing shell powder;

[0010] The effervescent core and the wash shell powder are fed together into a compression molding mold, so that the wash shell powder covers the outside of the effervescent core. Then the wash shell powder is pressed to form a wash shell covering the effervescent core.

[0011] Optionally, the step of combining the acidic and basic bodies to form the effervescent core specifically includes:

[0012] After mixing the acidic agent and the molding agent, the mixture is sprayed into the binder solution for granulation, dried at 40℃-60℃, and sieved to obtain the acidic body.

[0013] After mixing the alkaline agent and the molding agent, the mixture is sprayed into the binder solution for granulation, dried at 40℃-60℃, and sieved to obtain the alkaline body.

[0014] The acidic substance and the basic substance are mixed and then pressed into the effervescent core. The acidic substance and the basic substance are randomly distributed in the effervescent core under the pressed state.

[0015] Optionally, the specific steps of combining the acidic and basic bodies into an effervescent core include:

[0016] The acidic agent and the molding agent dry powder are mixed and directly pressed into shape, and then coated with a first water-soluble film to form an acidic body;

[0017] The alkaline agent and the molding agent dry powder are mixed and directly pressed into shape, and then coated with a second water-soluble film to form an alkaline body;

[0018] The acidic body and the basic body are arranged side by side, and the acidic body and the basic body are completely covered by a third aqueous membrane to form the effervescent core.

[0019] Optionally, the step of arranging the acidic body and the basic body side by side and completely coating the acidic body and the basic body with a third aqueous membrane specifically includes:

[0020] A multi-chamber forming mold is used to simultaneously hot-press multiple parallel grooved cavities onto the lower water-soluble film roll material;

[0021] The prepared acidic and basic bodies are placed into their respective grooved chambers.

[0022] An upper water-soluble film roll is placed on top of the lower water-soluble film roll after the acidic and alkaline bodies are inserted, and then sealed by hot pressing. The upper water-soluble film roll and the lower water-soluble film roll are fused together along the periphery of each groove cavity to form a third water-soluble film and a sealing line, so as to seal the acidic body and the alkaline body in an independent groove cavity.

[0023] Cut along the sealing line between two adjacent grooved chambers to obtain an independent effervescent core.

[0024] Optionally, the weight ratio of the effervescent core to the washing shell is 30-50:50-70.

[0025] Optionally, the weight ratio of the acidic body to the basic body is 30-40:60-70.

[0026] Optionally, the acidic agent is citric acid, the alkaline agent is sodium bicarbonate, and the molding agent is polyethylene glycol;

[0027] The acidic component comprises, by weight, 75-90 parts citric acid and 10-25 parts polyethylene glycol;

[0028] The alkaline substance comprises, by weight, 85-95 parts sodium bicarbonate and 5-15 parts polyethylene glycol.

[0029] Optionally, the surfactant includes sodium dodecyl sulfate and fatty alcohol polyoxyethylene ether;

[0030] The additives include sodium percarbonate, sodium sulfate, and polyethylene glycol;

[0031] The washing shell powder comprises, by weight, 25-40 parts sodium dodecyl sulfate, 15-25 parts fatty alcohol polyoxyethylene ether, 20-30 parts sodium percarbonate, 15-25 parts sodium sulfate, and 3-8 parts polyethylene glycol.

[0032] Optionally, after the step of forming the wash shell covering the effervescent core, the method further includes:

[0033] The outer shell of the washing machine is covered with a water-soluble outer packaging layer.

[0034] The present invention provides an effervescent detergent product, which is prepared by the above-described preparation method.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The preparation method of the effervescent detergent product of the present invention specifically involves pre-combining an acidic body and an alkaline body into an independent effervescent core, and then coating the effervescent core with surfactants and additives as detergent shell powder and pressing them into shape, forming a core-shell layered structure. This structure allows the outer detergent shell to preferentially contact and dissolve with water after the product is put into water, releasing the detergent active ingredients to act on the surface to be cleaned. Only after the detergent shell dissolves does the water gradually penetrate into the core to trigger the acid-base effervescent reaction. Thus, the detergent dissolution and effervescent reaction are sequential in time, avoiding the problems of bubble escape carrying away the detergent active ingredients and the formation of a foam layer on the liquid surface that weakens the water flow disturbance effect caused by the simultaneous occurrence of the two in the prior art. This ensures that the detergent active ingredients are fully dissolved and effectively act on the surface to be cleaned before the effervescent reaction occurs, significantly improving the effective utilization rate of the detergent and the actual cleaning power. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of a first structure of an effervescent washing product provided by the present invention;

[0039] Figure 2 This is a schematic diagram of a second structure of an effervescent washing product provided by the present invention;

[0040] Figure 3 A schematic flowchart illustrating a method for preparing an effervescent detergent product provided by the present invention;

[0041] Illustration: Effervescent core 1; Washing shell 2; Water-soluble outer packaging layer 3. Detailed Implementation

[0042] This invention discloses a method for preparing an effervescent detergent product and the effervescent detergent product, which solves the technical problem that existing effervescent detergent products suffer from easy loss of active detergent ingredients and reduced detergent power due to the simultaneous occurrence of effervescent reaction and detergent dissolution.

[0043] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] On the one hand, please refer to Figures 1 to 3 The present invention provides a method for preparing an effervescent detergent product, comprising the following steps:

[0045] S1. Combining an acidic body and a basic body to form an effervescent core 1, wherein the effervescent core 1 is configured to enter an effervescent state upon contact with water;

[0046] S2. Mix the surfactant and additives to obtain the washing shell powder;

[0047] S3. The effervescent core 1 and the washing shell powder are fed into a pressing mold together, so that the washing shell powder covers the outside of the effervescent core 1, and then the washing shell powder is pressed to form a washing shell 2 covering the effervescent core 1.

[0048] In the preparation method of this embodiment, the acidic and basic bodies are pre-combined into an independent effervescent core 1. Then, surfactants and additives are used as washing shell powder to coat the effervescent core 1 and pressed into shape, forming a core-shell layered structure. This structure allows the outer washing shell 2 to preferentially contact and dissolve with water after the product is put into water, releasing the washing active ingredients to act on the surface to be cleaned. Only after the washing shell 2 dissolves can the water gradually penetrate into the core to trigger the acid-base effervescent reaction. Thus, the detergent dissolution and effervescent reaction are sequential in time, avoiding the problems of bubble escape carrying away the washing active ingredients and the formation of a foam layer on the liquid surface that weakens the water flow disturbance effect caused by the simultaneous occurrence of the two in the prior art. This ensures that the washing active ingredients are fully dissolved and effectively act on the surface to be cleaned before the effervescent reaction occurs, significantly improving the effective utilization rate of detergent and actual washing power. Meanwhile, the present invention pre-combines and seals the acidic and alkaline substances inside the core, and the outer layer is covered by a dense washing shell 2. This shell layer acts as a physical barrier to effectively block the penetration path of environmental moisture into the core, avoiding the slow reaction of the acidic and alkaline substances due to moisture absorption during storage, and ensuring the retention rate of effective ingredients and the stability of effervescent performance of the product during its shelf life.

[0049] Furthermore, in the first specific embodiment of this example, the step of combining the acidic body and the basic body to form the effervescent core 1 specifically includes:

[0050] After mixing the acidic agent and the molding agent, the mixture is sprayed into the binder solution for granulation, dried at 40℃-60℃, and sieved to obtain the acidic body.

[0051] After mixing the alkaline agent and the molding agent, the mixture is sprayed into the binder solution for granulation, dried at 40℃-60℃, and sieved to obtain the alkaline body.

[0052] The acidic substance and the basic substance are mixed and then pressed into the effervescent core 1. The acidic substance and the basic substance are randomly distributed in the effervescent core 1 under the pressed state.

[0053] It should be noted that in the above embodiments, the acidic agent and the alkaline agent are respectively added to the mixing equipment with the molding agent in a predetermined ratio for dry powder mixing; then the mixed powder is added to the granulation equipment, and the binder is sprayed in. Under the stirring and shearing action of the granulation equipment, the powder gradually agglomerates to form wet granules; the obtained wet granules are preferably dried at 50°C to remove the residual ethanol and water inside the granules, and then sieved and granulated to obtain acidic and alkaline bodies with a certain particle size distribution range.

[0054] The two are prepared separately and then physically mixed, so that the acidic and basic components each have a low water content, which effectively avoids the slow reaction of the acidic and basic components due to the presence of water during storage and improves the storage stability of the product. Under the compressed state, the acidic and basic components are evenly and randomly distributed in the effervescent core 1. When they come into contact with water, the water can quickly penetrate into the core along the interface and micropores between them, and come into contact with the acidic and basic components distributed in various positions at the same time. The acid / base contact area is large and the reaction sites are dispersed, which can produce a strong and uniform effervescent effect.

[0055] In the second specific embodiment of this example, the specific steps of combining the acidic body and the basic body to form the effervescent core 1 include:

[0056] The acidic agent and the molding agent dry powder are mixed and directly pressed into shape, and then coated with a first water-soluble film to form an acidic body;

[0057] The alkaline agent and the molding agent dry powder are mixed and directly pressed into shape, and then coated with a second water-soluble film to form an alkaline body;

[0058] The acidic body and the basic body are arranged side by side, and the acidic body and the basic body are completely covered by a third aqueous membrane to form the effervescent core 1.

[0059] It should be noted that in the above embodiments, the acidic agent and molding aid are mixed in dry powder according to a preset ratio and then directly pressed into an acidic molded body by a pressing device; the alkaline agent and molding aid are mixed in dry powder according to a preset ratio and then directly pressed into an alkaline molded body by a pressing device. This pressing process does not require the addition of solvents or drying treatment, eliminating the granulation and drying steps in the traditional effervescent formulation process. This not only shortens the process flow, reduces equipment investment and energy consumption, but also avoids the problem of moisture absorption or activity reduction that may occur in the acidic and alkaline agents due to heat during the drying process, thereby improving production efficiency and product consistency.

[0060] The acidic molded body is completely encapsulated in a first water-soluble film at 360° to form an acidic body; the basic molded body is completely encapsulated in a second water-soluble film at 360° to form a basic body. The first and second water-soluble films completely encapsulate the acidic and basic molded bodies, respectively, making each an independent water-soluble film-coated unit. This achieves complete physical isolation of the acid and alkali in the microscopic space. Even in high-temperature and high-humidity storage environments, the acidic and basic agents will not react due to moisture penetration, effectively avoiding slow reactions, moisture absorption, clumping, and swelling caused by environmental humidity during storage, significantly improving the long-term storage stability of the product.

[0061] The acidic body, already coated with a first aqueous membrane, and the basic body, already coated with a second aqueous membrane, are arranged side by side, and then encapsulated together with a third aqueous membrane to form the effervescent core 1. The third aqueous membrane encapsulates the acidic and basic bodies into an independent core unit, ensuring the structural integrity of the effervescent core 1 during transportation and storage, and preventing relative displacement or separation between the acidic and basic bodies.

[0062] After the product is placed in water, the third water-soluble membrane dissolves upon contact with water, exposing the acidic and alkaline substances encapsulated inside to the water. Subsequently, the first and second water-soluble membranes dissolve upon contact with water, and the acidic and alkaline agents come into contact and trigger an effervescent reaction. This achieves sequential control of the detergent release from the outer shell 2, the dissolution of the core water-soluble membrane, acid / alkali contact, and effervescent reaction, ensuring that the active detergent ingredients have fully acted on the surface to be cleaned before the effervescent reaction occurs.

[0063] Furthermore, in the above specific embodiment, the step of arranging the acidic body and the basic body side by side and completely coating the acidic body and the basic body with a third aqueous membrane specifically includes:

[0064] A multi-chamber forming mold is used to simultaneously hot-press multiple parallel grooved cavities onto the lower water-soluble film roll material;

[0065] The prepared acidic and basic bodies are placed into their respective grooved chambers.

[0066] An upper water-soluble film roll is placed on top of the lower water-soluble film roll after the acidic and alkaline bodies are inserted, and then sealed by hot pressing. The upper water-soluble film roll and the lower water-soluble film roll are fused together along the periphery of each groove cavity to form a third water-soluble film and a sealing line, so as to seal the acidic body and the alkaline body in an independent groove cavity.

[0067] Cut along the sealing line between two adjacent groove chambers to obtain an independent effervescent core 1.

[0068] It should be noted that in the above steps, by using a multi-chamber forming mold to simultaneously hot-press multiple parallel grooved chambers onto the water-soluble film roll, continuous production of the parallel arrangement and overall coverage of the acidic and basic substances is achieved. The grooved chambers are arranged in an array along the conveying direction of the roll, and with the automatic picking and insertion operation of the robotic arm, large-scale industrial mass production of the effervescent core 1 can be realized. The hot-press sealing causes the upper and lower water-soluble films to melt together along the periphery of each grooved chamber to form a continuous sealing line, sealing the acidic and basic substances in independent grooved chambers respectively, ensuring reliable sealing and high production efficiency. The cutting process is carried out along the outer edge of the sealing line to separate each effervescent core 1 unit on the continuous roll. Each effervescent core 1 unit contains a structure in which an acidic substance and a basic substance are arranged side by side, ensuring the consistency of the product and the uniformity of the effervescent effect.

[0069] In the above specific implementation, when the product is put into water, the timing control of "dissolving the outer shell 2 → releasing detergent → dissolving the core water-soluble film → acid / alkali contact → effervescent reaction" is achieved, ensuring that the active detergent ingredients have fully acted on the surface to be cleaned before the effervescent reaction occurs.

[0070] Furthermore, in this embodiment, the weight ratio of the effervescent core 1 to the washing shell 2 is 30-50:50-70.

[0071] It should be noted that within the above ratio range, the effervescent core 1 contains sufficient acidic and alkaline substances, which can generate a sufficient amount of carbon dioxide gas when it comes into contact with water, forming a clear effervescent visual effect and sensory feedback. At the same time, the washing shell 2 contains sufficient surfactants and additives, which can release sufficient washing active ingredients to achieve effective cleaning.

[0072] When the weight ratio of effervescent core 1 is less than 30 parts, the absolute content of acidic and basic substances in the core is insufficient, the amount of carbon dioxide gas produced after contact with water is limited, the effervescent effect is not obvious, the visual feedback is weak, it is difficult to give users an intuitive feeling that the product is working efficiently, and the sensory experience is poor.

[0073] When the weight ratio of effervescent core 1 is higher than 50 parts, the weight ratio of washing shell 2 is reduced to less than 50 parts under the condition that the total weight remains unchanged. The absolute content of surfactants and additives in washing shell 2 is insufficient, the detergency is reduced, and it cannot meet the daily cleaning needs.

[0074] Furthermore, in this embodiment, the acidic agent can be selected as citric acid, the alkaline agent can be selected as sodium bicarbonate, the molding agent can be selected as polyethylene glycol, and the adhesive can be selected as an ethanol solution of polyethylene glycol.

[0075] The acidic component, calculated by weight, may include citric acid: 75-90 parts (e.g., 75, 76, 80, 88, 90, etc.); polyethylene glycol 6000: 10-25 parts (e.g., 10, 15, 20, 25, etc.).

[0076] When the amount of polyethylene glycol 6000 is less than 10 parts, it is difficult to form the acidic body, and acidic agents such as citric acid are prone to absorbing moisture during storage; when the amount of polyethylene glycol 6000 is more than 25 parts, the effervescent reaction rate slows down significantly, and the core volume is too large. The preferred amount of polyethylene glycol 6000 is 12-20 parts, which balances formability, moisture resistance, and reaction rate.

[0077] The basic component, calculated by weight, may include sodium bicarbonate: 85-95 parts (e.g., 85, 86, 87, 90, 95, etc.); polyethylene glycol 6000: 5-15 parts (e.g., 5, 6, 7, 10, 15 parts).

[0078] It should be noted that within the above ratio range, polyethylene glycol acts as a molding aid, imparting sufficient structural strength and compressibility to both the acidic and basic forms. At the same time, polyethylene glycol has certain hydrophobicity and film-forming properties, enabling it to form a protective layer on the surface of the acidic and basic agents, further reducing the risk of moisture absorption.

[0079] When the amount of polyethylene glycol (PEG) is less than 10 parts, the acidic body is difficult to mold and citric acid is easily hygroscopic during storage. When the amount of PEG is more than 25 parts, the effervescent reaction rate slows down significantly and the core volume is too large. The preferred amount of PEG is 12-20 parts, which balances moldability, moisture resistance and reaction rate. The PEG content in the alkaline body is 5-15 parts, which also plays a dual role as a molding aid and moisture protection.

[0080] Furthermore, in this embodiment, the weight ratio of the acidic body to the basic body is 30-40:60-70.

[0081] It should be noted that the above ratio range is based on the molar ratio of the acid-base neutralization chemical reaction between citric acid and sodium bicarbonate. According to the chemical reaction equation, when citric acid and sodium bicarbonate undergo a neutralization reaction, 1 molecule of citric acid can react completely with 3 molecules of sodium bicarbonate to produce sodium citrate, water and carbon dioxide.

[0082] When the weight ratio of acidic body is less than 30 parts or the weight ratio of basic body is greater than 70 parts, the basic body is in excess, and the acidic body is insufficient to react with all the basic body. As a result, some basic body cannot participate in the effervescent reaction, the gas production is insufficient, and the effervescent effect is weakened.

[0083] When the weight ratio of the acidic component is higher than 40 parts or the weight ratio of the basic component is lower than 60 parts, the acidic component is in excess, and unreacted citric acid remains after the reaction. This not only wastes the acidic raw materials but also leaves a sour taste in the aqueous solution after the product is dissolved, affecting the user experience. Controlling the weight ratio of the acidic component to the basic component within the above range can achieve the best technical effect of the most complete acid-base neutralization reaction, the maximum carbon dioxide production, and no sour taste residue.

[0084] Furthermore, the surfactant in this embodiment includes sodium dodecyl sulfate and fatty alcohol polyoxyethylene ether;

[0085] The additives include sodium percarbonate, sodium sulfate, and polyethylene glycol;

[0086] The washing shell powder comprises, by weight, 25-40 parts sodium dodecyl sulfate, 15-25 parts fatty alcohol polyoxyethylene ether, 20-30 parts sodium percarbonate, 15-25 parts sodium sulfate, and 3-8 parts polyethylene glycol.

[0087] It should be noted that in the above-mentioned formula of the washing shell powder, sodium dodecyl sulfate, as an anionic surfactant, provides the main detergency and foaming power, while fatty alcohol polyoxyethylene ether, as a nonionic surfactant, provides excellent degreasing and emulsifying capabilities. The combination of the two can exert a synergistic effect and has a good removal effect on various stains. Sodium percarbonate, as a bleaching aid, releases active oxygen during the washing process, playing a role in detergency, bleaching, disinfection, and sterilization. Sodium sulfate, as a filler and detergent builder, adjusts the hardness and solubility of the product. Polyethylene glycol, as a binder and molding aid, enables the mixed powder of surfactants and aids to be firmly pressed into a solid shell layer with sufficient structural strength.

[0088] When sodium lauryl sulfate is below 25 parts, its detergency is insufficient; when it is above 40 parts, the product is too alkaline and may irritate the skin.

[0089] When the amount of fatty alcohol polyoxyethylene ether is less than 15 parts, the degreasing power is insufficient; when the amount is more than 25 parts, the shell is too soft and difficult to form.

[0090] When sodium percarbonate is below 20 parts, the active oxygen bleaching effect is not obvious, and when it is above 30 parts, the stability of the outer shell decreases; when polyethylene glycol is below 3 parts, the outer shell is easily broken, and when it is above 8 parts, the outer shell dissolves more slowly.

[0091] Furthermore, the polyethylene glycol (PEG) mentioned in this embodiment can be polyethylene glycol 4000 to polyethylene glycol 8000. Designers can choose according to actual needs, and this embodiment does not impose any restrictions on this.

[0092] Furthermore, after the step of forming the washing shell 2 covering the effervescent core 1, the method further includes:

[0093] A water-soluble outer packaging layer 3 is wrapped around the outside of the washing shell 2.

[0094] It should be noted that in the above design, the water-soluble outer packaging layer 3, as a supplementary physical barrier, can further prevent environmental moisture from penetrating into the product, providing longer-lasting storage protection for the product in diverse usage scenarios. This prevents the active ingredients in the washing shell 2 from clumping, denaturing, or losing activity due to moisture absorption, while also preventing the acidic and alkaline substances in the effervescent core 1 from undergoing a slow neutralization reaction due to moisture penetration. After the product is placed in water, the water-soluble outer packaging layer 3 dissolves rapidly without affecting the normal use of the product, enabling the preparation method of this embodiment to flexibly adapt to product development needs with different storage conditions and shelf-life requirements.

[0095] Furthermore, in this embodiment, the water-soluble outer packaging layer 3, the first water-soluble film, the second water-soluble film, and the third water-soluble film are made of the same material, and the water-soluble temperature range of the water-soluble outer packaging layer 3, the first water-soluble film, the second water-soluble film, and the third water-soluble film is 40℃-60℃.

[0096] It should be noted that the aforementioned water-soluble outer packaging layer 3, the first water-soluble film, the second water-soluble film, and the third water-soluble film are all medium-temperature soluble PVA (polyvinyl alcohol) water-soluble films. In production, the PVA water-soluble film is simply coated onto the outside of the outer shell 2 to form the water-soluble outer packaging layer 3;

[0097] The water-soluble temperature range is set at 40℃-60℃, which has the following technical considerations: Under normal storage conditions (usually around 25℃), the water-soluble film will not dissolve or soften, and it can still maintain good structural integrity even in high-temperature warehouse environments in summer (which may reach 35℃-38℃), ensuring the storage stability of the product during its shelf life; Under usage conditions, consumers usually use warm water (above 40℃) for washing, and the water-soluble outer packaging layer 3 and each water-soluble film can dissolve rapidly in a short time, quickly releasing the acidic and alkaline substances in the core and triggering the effervescent reaction.

[0098] On the other hand, please see Figures 1 to 2 This invention provides an effervescent detergent product, which is prepared by the above-described preparation method.

[0099] It should be noted that when this effervescent detergent product (without a water-soluble outer packaging layer 3) is placed in water, the outer shell 2 comes into contact with the water and releases the active detergent ingredients. Only after the outer shell 2 dissolves does the water gradually penetrate into the core, triggering the effervescent reaction. Thus, the detergent dissolution and effervescent reaction are sequential, avoiding the problem of effervescent gas escaping and carrying away the active detergent ingredients, significantly improving the effective utilization rate of the detergent and the actual washing power. At the same time, the outer shell layer acts as a physical barrier to effectively prevent environmental moisture from penetrating into the core, ensuring the retention rate of the effective ingredients and the stability of the effervescent performance during the product's shelf life.

[0100] In addition, when the effervescent washing product is covered with a water-soluble outer packaging layer 3, when it is put into water, the water-soluble outer packaging layer 3 that comes into contact with the water first dissolves. Then the washing shell 2 comes into contact with the water and releases the washing active ingredients. Only after the washing shell 2 dissolves can the water gradually penetrate into the core to trigger the effervescent reaction.

[0101] The preparation method of an effervescent detergent product and the effervescent detergent product provided by the present invention have been described in detail above. For those skilled in the art, based on the ideas of the embodiments of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for preparing an effervescent detergent product, characterized in that, Includes the following steps: An acidic body and a basic body are combined to form an effervescent core (1), which is configured to enter an effervescent state upon contact with water; The surfactant and additives are mixed to obtain a washing shell powder; The effervescent core (1) and the washing shell powder are fed into a pressing mold together, so that the washing shell powder covers the outside of the effervescent core (1), and then the washing shell powder is pressed to form a washing shell (2) covering the effervescent core (1).

2. The method for preparing the effervescent detergent product according to claim 1, characterized in that, The step of combining the acidic and basic bodies to form the effervescent core (1) specifically includes: After mixing the acidic agent and the molding agent, the mixture is sprayed into the binder solution for granulation, dried at 40℃-60℃, and sieved to obtain the acidic body. After mixing the alkaline agent and the molding agent, the mixture is sprayed into the binder solution for granulation, dried at 40℃-60℃, and sieved to obtain the alkaline body. The acidic substance and the basic substance are mixed and then pressed into the effervescent core (1). The acidic substance and the basic substance are randomly distributed in the effervescent core (1) under the pressed state.

3. The method for preparing the effervescent detergent product according to claim 1, characterized in that, The specific steps for combining the acidic and basic bodies into an effervescent core (1) include: The acidic agent and the molding agent dry powder are mixed and directly pressed into shape, and then coated with a first water-soluble film to form an acidic body; The alkaline agent and the molding agent dry powder are mixed and directly pressed into shape, and then coated with a second water-soluble film to form an alkaline body; The acidic body and the basic body are arranged side by side, and the acidic body and the basic body are completely covered by a third water-soluble membrane to form the effervescent core (1).

4. The method for preparing the effervescent detergent product according to claim 3, characterized in that, The step of arranging the acidic body and the basic body side by side and completely coating the acidic body and the basic body with a third aqueous membrane specifically includes: A multi-chamber forming mold is used to simultaneously hot-press multiple parallel grooved cavities onto the lower water-soluble film roll material; The prepared acidic and basic bodies are placed into their respective grooved chambers. An upper water-soluble film roll is placed on top of the lower water-soluble film roll after the acidic and alkaline bodies are inserted, and then sealed by hot pressing. The upper water-soluble film roll and the lower water-soluble film roll are fused together along the periphery of each groove cavity to form a third water-soluble film and a sealing line, so as to seal the acidic body and the alkaline body in an independent groove cavity. Cut along the sealing line between two adjacent groove chambers to obtain an independent effervescent core (1).

5. The method for preparing the effervescent detergent product according to claim 1, characterized in that, The weight ratio of the effervescent core (1) to the washing shell (2) is 30-50:50-70.

6. The method for preparing the effervescent detergent product according to claim 1, characterized in that, The weight ratio of the acidic body to the basic body is 30-40:60-70.

7. The method for preparing the effervescent detergent product according to claim 2 or 3, characterized in that, The acidic agent is citric acid, the alkaline agent is sodium bicarbonate, and the molding agent is polyethylene glycol; The acidic component comprises, by weight, 75-90 parts citric acid and 10-25 parts polyethylene glycol; The alkaline substance comprises, by weight, 85-95 parts sodium bicarbonate and 5-15 parts polyethylene glycol.

8. The method for preparing the effervescent detergent product according to claim 1, characterized in that, The surfactants include sodium dodecyl sulfate and fatty alcohol polyoxyethylene ether; The additives include sodium percarbonate, sodium sulfate, and polyethylene glycol; The washing shell powder comprises, by weight, 25-40 parts sodium dodecyl sulfate, 15-25 parts fatty alcohol polyoxyethylene ether, 20-30 parts sodium percarbonate, 15-25 parts sodium sulfate, and 3-8 parts polyethylene glycol.

9. The method for preparing the effervescent detergent product according to claim 1, characterized in that, After the step of forming the washing shell (2) covering the effervescent core (1), the process further includes: A water-soluble outer packaging layer (3) is wrapped around the outside of the washing shell (2).

10. An effervescent detergent product, characterized in that, The effervescent washing product is prepared by the preparation method according to any one of claims 1 to 9.

Images