Antibacterial laundry beads and preparation method thereof

Abstract

The invention discloses an antibacterial laundry gel bead and a preparation method thereof. The preparation method comprises the following steps: adding an antibacterial agent, fatty alcohol polyoxyethylene ether, sodium isethionate, and coconut oil fatty acid diethanolamide into deionized water at 40-60° C. and stirring evenly; cooling to room temperature; adding rose essential oil, tea tree oil, palm oil, propylene glycol, sorbitol, and mannitol; stirring evenly; feeding the material liquid into an automatic packaging machine, and packaging it with a PVA water-soluble film to obtain the antibacterial laundry gel bead; the prepared laundry gel bead is mild and non-irritating, has excellent decontamination ability and the ability to fragrance clothes, can also provide a long-lasting, stable, and efficient sterilization effect, and is safe and harmless to the human body.

Description

Technical Field

[0001] The present invention relates to the field of daily chemical detergents, and in particular to antibacterial laundry beads and a preparation method thereof. Background Art

[0002] Laundry detergent pods are a category of machine-washable fabric cleaning products that have gained popularity in recent years. Their advantages, including ultra-concentrated, green formulas, precise and convenient application, and stylish, colorful packaging, have earned them increasing consumer recognition and favor. Since Procter & Gamble launched Ariel Laundry Detergent Pods in China in 2014, several major domestic detergent manufacturers, such as Nice, Langqi, Liby, and Weilai, have followed suit and launched corresponding pod products under their respective brands. Recent market data indicates that total sales of laundry detergent pods in China have increased annually, maintaining a positive growth momentum. After several years of development, laundry detergent pods have become a new generation of fabric cleaning products in the Chinese laundry market, following laundry soap, laundry powder, and laundry liquid. Their continued promotion and use are not only crucial for promoting the concentration of detergents in my country but also represent the industry's progress towards low-carbon, energy-saving, and green environmental protection.

[0003] The main forms of gel beads on the market now include single-cavity and multi-cavity (generally 2 to 3 cavities). The independent parts of the multi-cavity are separated by a water-soluble membrane. According to the requirements of the formula, laundry detergent, softener, bleach, enzyme, bactericide, color fixative and fragrance can be placed in the membrane cavity respectively.

[0004] The basic formula of laundry detergent beads generally consists of solvents, a small amount of water, surfactants, additives, and enzyme preparations. The surfactants in the beads are generally a combination of anionic and nonionic surfactants. When selecting a surfactant, in addition to considering detergency, attention should also be paid to solubility, gelation, foaming, and compatibility with membranes. The additives used in detergents are mainly water softeners and anti-redeposition agents. These additives disperse stains and prevent them from redepositing on the surface being cleaned. Detergent formulations must balance product stability and cleaning effectiveness, and more catalytic washing technologies, such as enzymes, should be used. Laundry detergent beads use a low-water, ultra-concentrated formula to prevent surfactant precipitation. The most effective method is to add a large amount of solvent, commonly used ones include ethanol, ethylene glycol, propylene glycol, and glycerin.

[0005] With the upgrading of domestic market consumption, the market demand for high-performance and high-quality laundry products is also growing. Compared with ordinary laundry powder and laundry liquid, laundry beads have the following advantages: (1) They have good cleaning and decontamination capabilities. The surfactant content is 3 to 5 times that of ordinary laundry liquid. Laundry beads contain a variety of surfactants and biological enzymes. They can easily remove a variety of stubborn stains, such as sweat stains, oil stains, blood stains, milk stains, urine stains, etc.; (2) They are easy to use. Consumers do not need to measure them. They can use one bead at a time without getting their hands dirty. It is easy and convenient, saving time and worry; (3) They are easily soluble in water. The outer membrane of most laundry beads can generally be dissolved in 1 minute, releasing multiple times concentrated laundry liquid. The outer membrane can be completely dissolved in water in about 5 minutes and discharged with the rinse water without remaining on the fabric; (4) They are low in foam. Because the laundry beads have a high surfactant content, most manufacturers will use a low-foam formula to prevent excessive foam from overflowing the washing machine. The low-foam formula is easier to rinse, saving water and time.

[0006] Chinese patent document CN202010023740.2 discloses laundry detergent beads containing alcohol ether solvents and a preparation method thereof. The beads comprise a liquid and a water-soluble film, the liquid being coated within the film. The liquid comprises 3-80% solvent and 3-90% surfactant. The solvent includes an alcohol ether solvent in a ratio of 1:0-15. The water-soluble film is made of polyvinyl alcohol (PVA), modified polyvinyl alcohol, or modified starch. The components are mixed according to a specific process and then coated to produce laundry detergent beads containing alcohol ether solvents. Laundry detergent beads containing alcohol ether solvents can significantly improve their cleaning ability.

[0007] However, the simple advantages of low foaming and high detergency of existing laundry detergent beads can no longer meet the needs of the public. There is an urgent need to develop an antibacterial laundry detergent bead with high efficiency, broad spectrum and good stability. Summary of the Invention

[0008] In order to address the deficiencies in the prior art, the purpose of the present invention is to provide an antibacterial laundry beads and a preparation method thereof. The prepared laundry beads are mild and non-irritating, have excellent decontamination ability and the ability to fragrance clothes, and can also provide a long-lasting, stable and efficient sterilization effect, and are safe and harmless to the human body.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] The invention discloses an antibacterial laundry gel bead, which is prepared from the following components: 4-8 parts of an antibacterial agent, 25-35 parts of fatty alcohol polyoxyethylene ether, 15-20 parts of sodium isethionate, 10-18 parts of coconut oil fatty acid diethanolamide, 8-14 parts of deionized water, 1-3 parts of rose essential oil, 1-3 parts of tea tree oil, 1-3 parts of palm oil, 5-12 parts of propylene glycol, 8-12 parts of sorbitol, and 16-24 parts of mannitol.

[0011] Preferably, it is made from the following components: 6 parts of antibacterial agent, 30 parts of fatty alcohol polyoxyethylene ether, 18 parts of sodium isethionate, 14 parts of coconut oil fatty acid diethanolamide, 12 parts of deionized water, 2 parts of rose essential oil, 2 parts of tea tree oil, 2 parts of palm oil, 9 parts of propylene glycol, 10 parts of sorbitol, and 20 parts of mannitol.

[0012] Preferably, the method for preparing the antibacterial agent comprises the following steps:

[0013] (1) Adding nano ZnO to KH560 aqueous solution and stirring evenly to obtain pretreated nano ZnO;

[0014] (2) adding the pretreated nano-ZnO to DMF, ultrasonically treating it, adding triethylamine, and dropwise adding N,N-dimethylethylenediamine under stirring, stirring to react, centrifuging, washing, and drying the product to obtain grafted nano-ZnO;

[0015] (3) Adding the grafted nano-ZnO and bromobutane into tetrahydrofuran, stirring for reaction, rotary evaporating the product, washing, and drying to obtain an antibacterial agent.

[0016] Preferably, in step (1), the concentration of the KH560 aqueous solution is 5-10 wt %, and the mass ratio of nano ZnO to the KH560 aqueous solution is 10:40-50.

[0017] Preferably, in step (1), the stirring condition is 60-70° C. for 2-4 h.

[0018] Preferably, in step (2), the ultrasonic treatment time is 10 to 20 minutes; and the weight ratio of pretreated nano-ZnO, triethylamine, and N,N-dimethylethylenediamine is 10:0.4 to 1:11 to 16.

[0019] Preferably, in step (2), the stirring reaction condition is 40-60° C. for 6-10 h.

[0020] Preferably, in step (3), the weight ratio of grafted nano-ZnO to bromobutyl is 10:14-22.

[0021] Preferably, in step (3), the stirring reaction condition is 45-65° C. for 16-22 h.

[0022] The present invention also claims protection for a preparation method of the antibacterial laundry beads, comprising the following steps: adding an antibacterial agent, fatty alcohol polyoxyethylene ether, sodium isethionate, and coconut oil fatty acid diethanolamide to deionized water at 40-60°C and stirring evenly, cooling to room temperature, adding rose essential oil, tea tree oil, palm oil, propylene glycol, sorbitol, and mannitol, stirring evenly, and then sending the liquid into an automatic packaging machine for PVA water-soluble film packaging to obtain antibacterial laundry beads.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1) The present invention provides an antibacterial laundry gel bead, which uses fatty alcohol polyoxyethylene ether, sodium isethionate, and coconut oil fatty acid diethanolamide as surfactants to provide excellent detergency; uses rose essential oil and tea tree oil as fragrance agents to provide a long-lasting fragrance, so that clothes can continue to release fragrance after washing, and provides certain antibacterial properties; uses palm oil as a softener to protect clothing fibers from damage; and provides an antibacterial agent to provide a long-lasting, stable, and efficient bactericidal effect, and is safe and harmless to the human body.

[0025] 2) The present invention provides an antibacterial agent, which firstly treats nano ZnO with KH560 to obtain epoxy-modified pretreated nano ZnO, effectively improving the dispersibility and reactivity of the nano particles; then, under the action of catalyst triethylamine, tertiary amine groups are introduced through the reaction of amino groups on N,N-dimethylethylenediamine and epoxy groups on pretreated nano ZnO to obtain grafted nano ZnO; finally, the tertiary amine compound is quaternized with butyl bromide to prepare a quaternary ammonium salt antibacterial agent; the nano ZnO can produce under visible light. Active oxygen and hydroxyl free radicals kill microorganisms, while quaternary ammonium salts can change the permeability of cell membranes, seeping out the contents of bacterial cells to hinder bacterial metabolism and achieve antibacterial and bactericidal effects. The prepared antibacterial agent can synergistically exert the effects of nano-ZnO and quaternary ammonium salts to achieve a highly effective bactericidal effect; in addition, after long-chain groups are grafted onto nano-ZnO, the surface polarity of nano-ZnO is changed. Due to the electrostatic repulsion between the hydrophobic long chains, nano-ZnO can be well dispersed in the liquid, so that the prepared laundry beads have better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show schematic diagrams of certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1This is a flow chart for the preparation of the antibacterial agent provided by the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0029] Unless otherwise specified, the chemical reagents and materials in the present invention are purchased from commercial sources or synthesized from commercially purchased raw materials.

[0030] Nano-ZnO was purchased from Jiangsu Nanodun Technology Co., Ltd. with a particle size of 82-110 nm.

[0031] The present invention will be further described below with reference to specific examples.

[0032] Example 1

[0033] A method for preparing antibacterial laundry beads comprises the following steps:

[0034] (1) Add 10 g of nano-ZnO to 50 g of 10 wt% KH560 aqueous solution and stir at 70°C for 4 h to obtain pretreated nano-ZnO;

[0035] (2) 10 g of pretreated nano-ZnO was added to 50 mL of DMF and ultrasonically treated for 20 min. 1 g of triethylamine was added, and 16 g of N,N-dimethylethylenediamine was added dropwise under stirring. The reaction was stirred at 60 °C for 10 h. The product was centrifuged, washed three times with DMF and deionized water, respectively, and dried to obtain grafted nano-ZnO.

[0036] (3) 10 g of grafted nano-ZnO and 22 g of bromobutane were added to 60 mL of tetrahydrofuran, stirred and reacted at 65° C. for 22 h, and the unreacted product was removed by rotary evaporation, washed, and dried to obtain an antibacterial agent;

[0037] (4) Add 6 g of antibacterial agent, 30 g of fatty alcohol polyoxyethylene ether, 18 g of sodium hydroxyethyl sulfonate, and 14 g of coconut oil fatty acid diethanolamide to 12 g of deionized water at 50 ° C and stir evenly. Cool to room temperature, add 2 g of rose essential oil, 2 g of tea tree oil, 2 g of palm oil, 9 g of propylene glycol, 10 g of sorbitol, and 20 g of mannitol. After stirring evenly, send the material liquid into an automatic packaging machine for PVA water-soluble film packaging to obtain antibacterial laundry beads.

[0038] Example 2

[0039] A method for preparing antibacterial laundry beads comprises the following steps:

[0040] (1) Add 10 g of nano-ZnO to 40 g of 5 wt% KH560 aqueous solution and stir at 60°C for 2 h to obtain pretreated nano-ZnO;

[0041] (2) 10 g of pretreated nano-ZnO was added to 50 mL of DMF and ultrasonicated for 10 min. 0.4 g of triethylamine was added and 11 g of N,N-dimethylethylenediamine was added dropwise under stirring. The reaction was stirred at 40 °C for 6 h. The product was centrifuged, washed three times with DMF and deionized water, and dried to obtain grafted nano-ZnO.

[0042] (3) 10 g of grafted nano-ZnO and 14 g of bromobutane were added to 60 mL of tetrahydrofuran, stirred and reacted at 45° C. for 16 h, and the unreacted product was removed by rotary evaporation, washed, and dried to obtain an antibacterial agent;

[0043] (4) Add 6 g of antibacterial agent, 30 g of fatty alcohol polyoxyethylene ether, 18 g of sodium hydroxyethyl sulfonate, and 14 g of coconut oil fatty acid diethanolamide to 12 g of deionized water at 50 ° C and stir evenly. Cool to room temperature, add 2 g of rose essential oil, 2 g of tea tree oil, 2 g of palm oil, 9 g of propylene glycol, 10 g of sorbitol, and 20 g of mannitol. After stirring evenly, send the material liquid into an automatic packaging machine for PVA water-soluble film packaging to obtain antibacterial laundry beads.

[0044] Example 3

[0045] A method for preparing antibacterial laundry beads comprises the following steps:

[0046] (1) Add 10 g of nano-ZnO to 45 g of 8 wt% KH560 aqueous solution and stir at 65°C for 3 h to obtain pretreated nano-ZnO;

[0047] (2) 10 g of pretreated nano-ZnO was added to 50 mL of DMF and ultrasonically treated for 15 min. 0.6 g of triethylamine was added and 14 g of N,N-dimethylethylenediamine was added dropwise under stirring. The reaction was stirred at 50 °C for 8 h. The product was centrifuged, washed three times with DMF and deionized water, and dried to obtain grafted nano-ZnO.

[0048] (3) 10 g of grafted nano-ZnO and 16 g of bromobutane were added to 60 mL of tetrahydrofuran, stirred and reacted at 50° C. for 18 h, and the unreacted product was removed by rotary evaporation, washed, and dried to obtain an antibacterial agent;

[0049] (4) Add 6 g of antibacterial agent, 30 g of fatty alcohol polyoxyethylene ether, 18 g of sodium hydroxyethyl sulfonate, and 14 g of coconut oil fatty acid diethanolamide to 12 g of deionized water at 50 ° C and stir evenly. Cool to room temperature, add 2 g of rose essential oil, 2 g of tea tree oil, 2 g of palm oil, 9 g of propylene glycol, 10 g of sorbitol, and 20 g of mannitol. After stirring evenly, send the material liquid into an automatic packaging machine for PVA water-soluble film packaging to obtain antibacterial laundry beads.

[0050] Example 4

[0051] A method for preparing antibacterial laundry beads comprises the following steps:

[0052] (1) Add 10 g of nano-ZnO to 50 g of 10 wt% KH560 aqueous solution and stir at 65°C for 3 h to obtain pretreated nano-ZnO;

[0053] (2) 10 g of pretreated nano-ZnO was added to 50 mL of DMF and ultrasonicated for 15 min. 0.8 g of triethylamine was added and 15 g of N,N-dimethylethylenediamine was added dropwise under stirring. The reaction was stirred at 50 °C for 8 h. The product was centrifuged, washed three times with DMF and deionized water, and dried to obtain grafted nano-ZnO.

[0054] (3) 10 g of grafted nano-ZnO and 18 g of bromobutane were added to 60 mL of tetrahydrofuran, stirred and reacted at 60° C. for 20 h, and the unreacted product was removed by rotary evaporation, washed, and dried to obtain an antibacterial agent;

[0055] (4) Add 6 g of antibacterial agent, 30 g of fatty alcohol polyoxyethylene ether, 18 g of sodium hydroxyethyl sulfonate, and 14 g of coconut oil fatty acid diethanolamide to 12 g of deionized water at 50 ° C and stir evenly. Cool to room temperature, add 2 g of rose essential oil, 2 g of tea tree oil, 2 g of palm oil, 9 g of propylene glycol, 10 g of sorbitol, and 20 g of mannitol. After stirring evenly, send the material liquid into an automatic packaging machine for PVA water-soluble film packaging to obtain antibacterial laundry beads.

[0056] Comparative Example 1

[0057] A method for preparing laundry beads comprises the following steps:

[0058] (1) Add 10 g of nano-ZnO to 50 g of 10 wt% KH560 aqueous solution and stir at 70°C for 4 h to obtain pretreated nano-ZnO;

[0059] (2) Add 6 g of pretreated nano-ZnO, 30 g of fatty alcohol polyoxyethylene ether, 18 g of sodium hydroxyethyl sulfonate, and 14 g of coconut oil fatty acid diethanolamide to 12 g of deionized water at 50 ° C and stir evenly. Cool to room temperature, add 2 g of rose essential oil, 2 g of tea tree oil, 2 g of palm oil, 9 g of propylene glycol, 10 g of sorbitol, and 20 g of mannitol, stir evenly, and then send the liquid into an automatic packaging machine for PVA water-soluble film packaging to obtain laundry beads.

[0060] Comparative Example 2

[0061] A method for preparing laundry beads comprises the following steps:

[0062] (1) 16 g of N,N-dimethylethylenediamine and 22 g of bromobutane were added to 60 mL of tetrahydrofuran, stirred at 65° C. for 22 h, and the unreacted product was removed by rotary evaporation, washed, and dried to obtain a quaternary ammonium salt;

[0063] (2) Add 6 g of quaternary ammonium salt, 30 g of fatty alcohol polyoxyethylene ether, 18 g of sodium hydroxyethyl sulfonate, and 14 g of coconut oil fatty acid diethanolamide to 12 g of deionized water at 50°C and stir evenly. Cool to room temperature, add 2 g of rose essential oil, 2 g of tea tree oil, 2 g of palm oil, 9 g of propylene glycol, 10 g of sorbitol, and 20 g of mannitol, stir evenly, and then send the liquid into an automatic packaging machine for PVA water-soluble film packaging to obtain laundry beads.

[0064] Comparative Example 3

[0065] A method for preparing laundry beads comprises the following steps:

[0066] At 50°C, add 30g of fatty alcohol polyoxyethylene ether, 18g of sodium hydroxyethyl sulfonate, and 14g of coconut oil fatty acid diethanolamide to 12g of deionized water and stir evenly. Cool to room temperature, add 2g of rose essential oil, 2g of tea tree oil, 2g of palm oil, 9g of propylene glycol, 10g of sorbitol, and 20g of mannitol. After stirring evenly, send the liquid into an automatic packaging machine for PVA water-soluble film packaging to obtain laundry beads.

[0067] Referring to GB / T 13174-2021, "Determination of Detergency and Washing Cycle Performance of Detergents for Clothing," the various soiled fabrics required for the test were cut into 6cm x 6cm test pieces, with four pieces forming a group. The test was conducted using 250mg / kg hard water, a test sample concentration of 0.1%, and a standard laundry detergent concentration of 0.2%. The samples were maintained at a constant temperature of 30°C and a fixed speed of 120 rpm for 20 minutes before rinsing twice and air-drying. The whiteness values ​​before and after washing were measured, and the detergency of each sample was calculated. Specific data are shown in Table 1.

[0068] Table 1 Decontamination ability of each laundry condensate

[0069] Carbon black stained cloth Sebaceous cloth Cooking oil stained cloth Example 1 1.3 1.4 1.6 Example 2 1.1 1.1 1.2 Example 3 1.2 1.2 1.3 Example 4 1.3 1.4 1.5 Standard laundry detergent 1.0 1.0 1.0

[0070] The decontamination effects of the laundry gels prepared in Examples 1 to 4 are all greater than 1, meeting the requirements of QB / T 1224-2012 "Liquid Detergents for Clothing".

[0071] One laundry bead prepared in each example was dissolved in 1 L of deionized water to obtain laundry liquid. The antibacterial properties of the laundry liquid were determined with reference to QB / T2738-2012 "Evaluation Method for Antibacterial and Antimicrobial Effects of Daily Chemical Products". Specific data are shown in Table 2.

[0072] Table 2 Antibacterial effect of laundry gel (%)

[0073] Escherichia coli Staphylococcus aureus Candida albicans Example 1 99.3 99.9 93.2 Example 2 98.7 99.9 91.5 Example 3 98.9 99.9 92.3 Example 4 99.2 99.9 92.8 Comparative Example 1 43.5 36.8 33.9 Comparative Example 2 51.2 56.3 41.6 Comparative Example 3 15.8 16.7 12.4

[0074] Take one laundry bead prepared in Example 1 and Comparative Example 1 and dissolve it in 1 L of deionized water to obtain laundry liquid. The laundry liquid is stored at -5°C, 25°C, and 45°C for 20 days and 50 days, and the appearance and color of the laundry liquid are observed to determine its stability. The specific data are shown in Table 3.

[0075] Table 3 Stability of laundry gel

[0076]

[0077]

[0078] The laundry liquid obtained from the laundry gel prepared in Comparative Example 1 was observed to be turbid when stored at room temperature and a higher temperature for 20 days, which was presumably due to the precipitation of nano-ZnO. However, the laundry liquid obtained from the laundry gel prepared in Example 1 could be stored for a longer period of time at a higher temperature (45°C), indicating that the grafting of hydrophobic long chains can effectively increase the dispersibility of nano-ZnO, resulting in better storage stability of the laundry gel.

[0079] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An antibacterial laundry beads, characterized in that: The invention is prepared from the following components: 4-8 parts of antibacterial agent, 25-35 parts of fatty alcohol polyoxyethylene ether, 15-20 parts of sodium isethionate, 10-18 parts of coconut oil fatty acid diethanolamide, 8-14 parts of deionized water, 1-3 parts of rose essential oil, 1-3 parts of tea tree oil, 1-3 parts of palm oil, 5-12 parts of propylene glycol, 8-12 parts of sorbitol, and 16-24 parts of mannitol. The preparation method of the antibacterial agent comprises the following steps: (1) Add nano ZnO to KH560 aqueous solution and stir evenly to obtain pretreated nano ZnO; (2) Add the pretreated nano-ZnO to DMF, ultrasonicate it, add triethylamine, add N,N-dimethylethylenediamine dropwise under stirring, stir to react, centrifuge, wash, and dry the product to obtain grafted nano-ZnO; (3) Adding the grafted nano-ZnO and bromobutane to tetrahydrofuran, stirring to react, rotary evaporating the product, washing, and drying to obtain an antibacterial agent; In step (1), the concentration of the KH560 aqueous solution is 5-10 wt %, and the mass ratio of nano ZnO to the KH560 aqueous solution is 10:40-50; In step (1), the stirring condition is 60-70° C. and the reaction is stirred for 2-4 hours; In step (2), the ultrasonic treatment time is 10-20 min; the weight ratio of pretreated nano-ZnO, triethylamine, and N,N-dimethylethylenediamine is 10:0.4-1:11-16; In step (2), the stirring reaction condition is 40-60°C for 6-10 hours; In step (3), the weight ratio of grafted nano-ZnO to bromobutyl is 10:14-22; In step (3), the stirring reaction conditions are 45-65°C for 16-22 hours.

2. The antibacterial laundry beads according to claim 1, characterized in that: The invention is prepared from the following components: 6 parts of antibacterial agent, 30 parts of fatty alcohol polyoxyethylene ether, 18 parts of sodium isethionate, 14 parts of coconut oil fatty acid diethanolamide, 12 parts of deionized water, 2 parts of rose essential oil, 2 parts of tea tree oil, 2 parts of palm oil, 9 parts of propylene glycol, 10 parts of sorbitol and 20 parts of mannitol.

3. A method for preparing the antibacterial laundry beads according to any one of claims 1 to 2, characterized in that: The method comprises the following steps: adding an antibacterial agent, fatty alcohol polyoxyethylene ether, sodium isethionate, and coconut oil fatty acid diethanolamide into deionized water at 40-60° C. and stirring evenly; cooling the water to room temperature; adding rose essential oil, tea tree oil, palm oil, propylene glycol, sorbitol, and mannitol; stirring the water evenly; and feeding the liquid into an automatic packaging machine for packaging with a PVA water-soluble film to obtain antibacterial laundry beads.

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