WO2024256861A1 - Concentrated effervescent tablet formulations for making liquid soaps and surface cleaners - Google Patents

Abstract

Concentrated effervescent tablet formulations are prepared for various applications, such as personal hygiene, home cleaning, pet care, car wash, and industrial cleaning, enabling the creation of versatile and customised strength liquid soaps and surface cleaners. The inventive product is effervescent in nature and therefore immediately dissolves in water to make ready to use liquid soaps and cleaners without the need of stirring. The inventive product is a concentrated tablet formulation made from plant based cleaning agents, making it safer as compared to the various formulations in the market. The compact and solid form of the tablets ensures convenient usage, storage, and transportation, leading to cost savings in storage, transportation, and handling expenses, as well as reducing the need for single-use plastic bottles. Offering a customisable dilution to adjust the cleaning strength is one of the most important features of this inventive product. The inventive product comprises a formulation consisting of at least one cleaning agent or a combination of cleaning agents that are combined with at least one or more acids, alkalis, lubricants, binders, gliding agents, enzymes, preservatives, thickening agents, chelating agents, colours, and fragrances. The ingredients are processed under controlled environmental conditions, employing wet granulation, dry granulation, or direct compression methods. The tablets rapidly disintegrate in water, forming a solution that is highly effective for both skin cleansing and cleaning various surfaces.

Description

CONCENTRATED EFFERVESCENT TABLET FORMULATIONS FOR MAKING LIQUID SOAPS AND SURFACE CLEANERS

FIELD OF THE INVENTION

[001] The present invention relates to the field of cleaning agents and their formulations. Specifically, it encompasses the development of concentrated effervescent tablet formulations for producing liquid soaps and surface cleaners intended for cleaning skin and various surface areas. The inventive product offers notable advantages that become apparent through further description. The inventive formulation allows for the combination of multiple cleaning agents in a tablet form, creating a concentrated product that can be easily diluted in water to produce liquid cleaners with customizable strength at users’ end. The inventive product helps in reducing the consumption of single-use plastic bottles typically used for packaging liquid cleaning products. This unique approach eliminates the need to transport prediluted cleaning products, thereby reducing costs of transport, storage, and handling. [002] The invention provides a versatile and convenient cleaning solution with numerous advantages applicable in various areas such as home cleaning, personal hygiene, pet care, car care and cleaning of surfaces in commercial settings. The versatility of the invention enables its utilisation in diverse environments where effective and efficient cleaning of surfaces is required, extending its benefits beyond the initially mentioned contexts.

BACKGROUND OF THE INVENTION

[003] The use of cleaning products for maintaining personal hygiene and ensuring clean surfaces in our homes is an integral part of our daily lives. These products encompass a wide range, including shampoos, body washes, floor cleaners, dish cleaners, and more, which are commonly available in liquid or gel forms. They play a crucial role in promoting cleanliness, hygiene, and a healthy living environment.

[004] The predominant challenge associated with liquid and gel-based cleaning formulations is the inclusion of water as the primary ingredient, resulting in bulkiness and increased transportation costs. Additionally, these formulations often contain toxic chemicals like Sodium Lauryl Sulphate (SLS), which poses potential health risks. Moreover, the packaging of these products in single use plastic bottles contributes to environmental pollution. These products typically come in pre- determined concentrations, limiting the user's ability to adjust the strength according to their specific cleaning requirements.

[005] The inventive product is specifically designed to address the problems associated with current cleaning product formulations. It is formulated with the aim of offering a safer, customizable, and environmentally friendly alternative. By utilising innovative approaches, the invention tackles the issues of ingredient safety, bulkiness, plastic pollution, and the lack of customizable cleaning strength that will benefit the user and the environment.

[006] In US Patent Application No. US20020132746A1 , which claims priority from US Patent Application No. US26248301 P, Richard DE Senna Et al, discloses a method of manufacturing an effervescent tablet for cleaning toilet bowls. He uses sodium lauryl sulphate, ethoxylated alcohols, Alkyl benzene sulfonates along with an effervescent system to prepare a tablet that must be dropped in the toilet bowl. The purpose of the tablet is limited to cleaning one toilet bowl per tablet, which is achieved by dropping one tablet in the water of the toilet bowl. While the present inventive product aims at producing liquid soaps and surface cleaners from the concentrated tablet that can be used for cleaning multiple surfaces and used many times.

[007] The effervescent tablet described in the patent by Richard DE Senna Et al. falls short in several key aspects. Firstly, it does not offer a viable alternative to chemical cleaning agents, thereby compromising safety considerations. Additionally, their tablet lacks the crucial feature of customization, as it cannot be adjusted to alter the strength of cleaning. Furthermore, their invention does not provide for a product that can be diluted in water to create a multi-surface cleaner, limiting its usefulness solely to the cleaning of individual toilet bowls.

[008] In US Patent US20180105766A1 the inventor discloses a method of preparing a detergent composition in the form of effervescent tablet by combining sodium lauryl sulphate with urea and effervescent system. The invention by Lorena Marti Coma presents limitations in terms of safety, application scope, and customization. The combination of Sodium lauryl sulphate with Urea raises safety concerns, while the invention’s focus on treating hard water and cleaning surfaces excludes its use for cleaning skin and personal hygiene. Additionally, the lack of customizable concentration cleaning products restricts its adaptability. [009] In Chinese Patent No CN107384619B, the inventor introduces a cleaning effervescent tablet formulation specifically designed to clean pesticides, remove wax, and disinfect fruits and vegetables. The formulation incorporates surfactants, germicidal agents, and effervescent agents. The resulting tablet is dissolved in water to create a cleaning solution intended for use on vegetables and fruits. However, it is important to note that the use of the cleaning effervescent tablet is confined solely to the cleaning of vegetables and fruits, thus limiting its applicability in broader cleaning contexts.

[010] In US Patent No. US11359168B2, Syed Hamza Naqvi recognizes the importance of replacing liquid and gel-based detergents with concentrated alternatives. By eliminating water from laundry detergent formulations, the need for single-use plastic packaging can be minimised. The concentrate formulations not only reduce waste during production and shipping but also promote environmental sustainability. However, it is worth noting that the invention described in the patent is specifically tailored for use as a laundry detergent concentrate. The anhydrous laundry detergent mentioned is designed to be placed directly in the washing machine and is limited to washing clothes, with one tablet intended for a single application. In contrast, our inventive product offers a more versatile solution. The concentrated effervescent tablet is designed to be diluted in water, resulting in a liquid detergent solution that can be used multiple times. This liquid detergent is suitable for both machine washing and bucket washing of clothes, expanding its application beyond just laundry machines. By providing a customizable strength cleaning solution that can be used repeatedly, our invention offers enhanced convenience, flexibility, and efficiency in various washing scenarios.

[011] In Chinese Patent No CN111494244A, the inventor presents an effervescent cleaning tablet formulation specifically designed for use as a hand wash on the skin. The inventor highlights the convenience of carrying a tablet instead of a liquid product. However, it is important to note that the invention described in the patent requires direct application of the effervescent tablet on the hands with water to create foam for handwashing. In contrast, our inventive product offers a distinct approach. It provides a concentrated effervescent tablet formulation that, when diluted in water, creates a liquid hand wash solution. This liquid hand wash solution can be used multiple times, offering greater convenience and longevity. Furthermore, our invention offers the advantage of customizable concentration, allowing users to adjust the strength of the cleaning formula according to their skin sensitivity and personal preferences.

[012] Therefore, there is a clear need for a concentrated effervescent tablet formulation that can be diluted to create liquid soaps and cleaners suitable for use on both skin and multiple surfaces. This innovative product should offer a versatile solution that replaces existing formulations of cleaning products, providing numerous benefits, and fulfilling the objectives of this invention. By addressing the limitations of current products, such as limited use or lack of customizability, the inventive formulation aims to revolutionise the cleaning industry and meet the diverse needs of users in a more efficient and environmentally friendly manner.

OBJECT OF THE INVENTION

[013] The conventional personal cleaning products, detergents, and surface cleaners available in the market pose several significant problems. Firstly, these products are primarily formulated as liquids or gels, which often contain toxic chemical surfactants and have high water content. As a result, they tend to be bulky, increasing transportation costs and adding to the carbon footprint. Additionally, these products are typically packaged in single-use plastic containers, leading to environmental pollution, and contributing to the global plastic waste crisis. Moreover, users are compelled to purchase different variants of these products to cater to different skin types and specific cleaning requirements, making the process complex and costly.

[014] It has already been proposed to have a concentrated effervescent tablet formulation for making liquid soaps and surface cleaners that will overcome many of the problems associated with the conventional cleaning products.

[015] The principal object of this invention is to provide concentrated effervescent tablet formulations for making liquid soaps and cleaners that can be used on skin and various surfaces.

[016] Another object of the invention is to develop concentrated effervescent tablet formulations that eliminates the use of toxic or carcinogenic cleaning agents and surfactants commonly found in conventional cleaning products and provide enhanced safety to the users.

[017] Further object of this invention is to offer a versatile and customizable solution that allows users to adjust the strength of the cleaning products according to their specific needs and preferences by adjusting the dilution ratio of the concentrated effervescent tablet.

[018] Further object of this invention is to eliminate the need for transporting and storing bulky liquid and gel-based cleaning products by providing a compact and lightweight tablet form that can be easily dissolved in water.

[019] Further object of this invention is to reduce plastic pollution by eliminating the use of single-use plastic bottles typically associated with traditional liquid cleaning products.

[020] Other objects and advantages of this invention will be apparent from the following description and the appended claims.

SUMMARY OF THE INVENTION

[021] The present invention introduces a concentrated effervescent formulation to produce liquid soaps and surface cleaners. This formulation comprises a combination of organic acids, alkali salts, cleaning agents, preservatives, thickeners, and tableting additives, including gliding agents, binders, lubricants, colouring agents, fragrances, and their combinations. Notably, the formulation is presented in the form of a tablet. The solid particles of this inventive product can be manufactured using various methods known to those skilled in the art. The manufacturing process may involve the use of fluid-bed dryers or vacuum granulators for wet granulation, as well as dry granulation techniques. To achieve the desired particle size, sieving, crushing, or grinding processes may be employed. The acid component of the effervescent tablet formulation is preferably an organic acid or a combination of organic acids. Examples of suitable organic acids include maleic acid, citric acid, fumaric acid, tartaric acid, oxalic acid, boric acid, amino acids, and other food acids. The alkali salts used in the effervescent tablet formulation are preferably potassium, sodium, or calcium carbonate or bicarbonate, either individually or in combinations thereof.

[022] The tableting additives utilised in the effervescent tablet formulation are well- known to those skilled in the art. These additives serve various purposes in the tablet manufacturing process. For instance, gliding agents, such as boric acid and magnesium stearate, facilitate the smooth movement of the tablet material during compression. To maintain tablet hardness, binders are incorporated into the formulation. Binders, including dextrose, sorbitol, xylitol, maltodextrin, calcium phosphate, and microcrystalline cellulose, play a vital role in binding the ingredients together and ensuring the tablet’s structural integrity. Press lubricants are essential for easy ejection of the tablets from the tableting press. Water-soluble lubricants are commonly employed as they enable smooth release of the tablets without compromising their dissolution properties. Polyethylene glycol (ranging from 1500 to 12000), adipic acid, and potassium silicate are examples of lubricants that may be used in the formulation. It is important to note that if a tablet press utilises lubrication spray on the punches, the addition of lubricants in the formulation may not be necessary.

[023] Colouring agents are included in the effervescent tablet formulation to enhance the visual appeal of the product. These colouring agents are typically food colours that comply with safety regulations and are suitable for use in cleaning products. Preservatives, such as sodium benzoate and phenoxyethanol, are incorporated into the formulation to extend the shelf life of the product. Fragrances play an important role in enhancing the overall sensory experience of the product. They are primarily derived from essential oils and combinations thereof.The cleaning agents used in the effervescent tablets are carefully selected from a range of plantbased cleansers to ensure effective cleaning performance. These cleaning agents include Sodium cocoyl isethionate, olefin sulfonate, cocamidopropyl betaine, sucrose cocoate, glucoside surfactants, and various combinations thereof.Those skilled in the art will understand the versatility of these plant-based cleansers and how they can be combined in different ratios and formulations to meet the specific requirements of various cleaning applications.

[024] The effervescent tablets can be manufactured using well-known tableting techniques such as direct compression or compression of granules produced by wet or dry granulation methods. These techniques are commonly employed by those skilled in the art. Effervescent granulations can be achieved using various conventional blending equipment, including ribbon blenders, twin-cone blenders, and V-type blenders. This equipmentis commonly used in the industry for mixing and blending solid ingredients. Additionally, granulators and fluid-bed dryers have been extensively employed to produce effervescent granulations. In this process, the effervescent mixture, which consists of the solid ingredients, is prepared by spraying water and binder solution. The resulting mixture is then suspended in a stream of hot, dry air within the fluid-bed dryer. The hot air helps to evaporate the moisture, leading to the formation of granules.

[025] The effervescent tablets are produced by compressing the mixture using a tablet press, ensuring a consistent and uniform tablet shape. Throughout the manufacturing process, precise control is maintained over the temperature, which is maintained at 15 to 20 degrees Celsius, and the relative humidity, which is kept below 20 percent. These controlled environmental conditions are essential to ensure the quality and stability of the tablets during preparation and packaging. The effervescent tablets are packaged using a variety of packaging options specifically designed for effervescent formulations. These packaging options include, but are not limited to, HDPE tubes with silica gels in the caps or aluminium foil packaging. These packaging choices are carefully selected to maintain the integrity, freshness, and stability of the tablets throughout their shelf life.

[026] The concentrated effervescent tablets are versatile and can be dissolved in varying amounts of water to prepare liquid soaps for personal use or surface cleaners. Once dissolved, the resulting liquid soap can be applied to the skin/hair for effective cleaning, while the diluted surface cleaners can be applied to various surfaces for thorough cleaning. The inventive tablets can be tailored to meet specific application requirements in terms of size and weight. For instance, tablets weighing 5 grams can be diluted in 250 ml water to create a glass cleaner liquid suitable for removing external stains on buildings. The same tablet can also be diluted in 500 ml water to prepare a glass cleaner for home use. In another example, tablets weighing 10 grams can be diluted in 250 ml water to produce a liquid dog soap, while tablets weighing 30 grams can be diluted in 250 ml water to prepare a liquid laundry cleaner. These tablets have the advantage of rapid dissolution in water within 2 to 15 minutes, eliminating the need for stirring or agitation. The result is a customised cleaning solution with adjustable strength that effectively fulfils the intended purpose.

DETAILED DESCRIPTION OF THE DRAWINGS

[027] Cleaning products play a crucial role in maintaining hygiene and cleanliness in our daily lives. From personal care products like soaps and shampoos to household cleaners for various surfaces, these products are widely used. However, conventional cleaning formulations often come with certain limitations and drawbacks. The traditional liquid and gel-based cleaning products have several shortcomings that call for an innovative solution. Firstly, these formulations typically contain high amounts of water, which not only adds bulk to the product but also requires packaging in single-use plastic containers. This results in increased transportation costs, and environmental pollution.

[028] Secondly, many of these conventional formulations rely on toxic chemical surfactants, including SLS (sodium laurylsulphate), which can be harmful to both human health and the environment. There is a growing concern about the safety of such ingredients and a need for safer alternatives.Additionally, the strength of these formulations is often not customizable, meaning users have limited control over the concentration of the cleaning product. This lack of customization restricts the effectiveness and versatility of the cleaning process, as different surfaces and cleaning requirements may demand varying strengths of cleaning agents. Moreover, in the context of cleaning skin, specific skin types may require different levels of cleaning strength or gentle formulations. One-size-fits-all cleaning products may not effectively cater to these varying needs, potentially causing discomfort, irritation, or inadequate cleaning results. To address these issues, there is a need for an innovative solution that provides concentrated and customizable cleaning formulations while eliminating the drawbacks associated with conventional products. The invention of concentrated effervescent tablets aims to fulfil this need by offering a versatile, safe, and environmentally friendly alternative to traditional liquid and gelbased cleaning formulations.

[029] The concentrated effervescent tablet formulation for producing liquid soaps and cleaners comprises a precise combination of 10 key components: acids, alkali, gliding agents, binders, lubricants, cleaning agents, preservatives, fragrances, thickeners, and colouring agents. It should be noted that the specific ratios of these ingredients may vary depending on the embodiment and desired formulation. Those skilled in the art will appreciate the flexibility in adjusting these ratios to achieve the desired properties and effectiveness of the product.

[030] Various methods of manufacturing can be employed to create these tablets, including wet granulation, dry granulation, or direct compression. Each technique offers its own advantages and may be chosen based on factors such as costeffectiveness, efficiency, and desired tablet characteristics. Additionally, temperature and humidity control during the manufacturing and packaging processes are crucial to ensure the stability and quality of the tablets. However, it is important to note that different formulations may require specific temperature and humidity conditions to achieve optimal results. While the compositions and methods described in this document represent the preferred embodiments of the invention, it should be recognized that the invention is not limited solely to these specific compositions and methods. The scope of the invention extends to encompass any variations or modifications that fall within the claims appended hereto. Therefore, it is understood that changes can be made to the compositions, methods, and other aspects of the invention without departing from the overall scope and spirit of the invention as defined by the appended claims.

[031] The manufacturing process of the concentrated effervescent tablets utilises readily available raw materials from commercial chemical suppliers and manufacturers. To ensure strict quality control and maintain optimal manufacturing conditions, a dedicated clean room equipped with PUF panels, a sealed door with weatherstripping, and appropriate air conditioning systems was set up. The installation of an advanced relative humidity controller from Dew Dry machines further ensures precise regulation of the room’s humidity levels. Temperature and humidity control play a crucial role in the manufacturing process of concentrated effervescent tablets, and these measures are implemented to maintain optimal conditions throughout the production. A rapid mixer grinder machine was purchased for mixing ingredients, a ribbon blender was purchased for blending, fluid bed dryer equipment was purchased for removing moisture from powders, A multi-mill was purchased for milling the powders/granules and a sieving machine was purchased for obtaining uniform particle size.

[032] It is also contemplated that the concentrated effervescent tablet composition materials of this invention may be used in combination with active ingredients, such as disinfectants to offer germicidal or antibacterial properties to the cleaning solution. [033] The raw materials utilised in the manufacturing process of the concentrated effervescent tablets can be broadly classified into various categories mentioned below but not limited to those mentioned.

[034] 1 ) Acids: The present invention provides flexibility in the selection of water- soluble solid acids, allowing for a wide range of options to be utilised. Specific examples of such acids include citric acid, maleic acid, succinic acid, malic acid, ascorbic acid, fumaric acid, tartaric acid, oxalic acid, malonic acid, adipic acid, boric acid, sodium dihydrogen phosphate and potassium dihydrogen phosphate, lactic acid, amino acids, nicotinic acid and ascorbic acid or other food acids, while preferable examples include citric acid and oxalic acid. It is important to note that these examples are not exhaustive, and other water-soluble solid acids can also be employed in the formulation. Moreover, the acids can be used individually or in combination of two or more types as per desired ratios necessary for different formulations.

[035] 2) Alkali: The present invention allows for the utilisation of carbonates and bicarbonates as alkali components. There are no specific limitations on the types of carbonates or bicarbonates used in the formulation. Examples of which include sodium carbonate, potassium carbonate, calcium carbonate, sodium sesquicarbonate, sodium bicarbonate, potassium bicarbonate, potassium sesquicarbonate, lithium carbonate and lithium bicarbonate and so forth. Preferable examples include sodium carbonates, and sodium bicarbonate. The carbonates or bicarbonates used in the present invention can be employed individually or in combination with two or more types, allowing for a flexible ratio selection.

[036] 3) Gliding agent: Magnesium Stearate, Stearic acid, Boric Acid etc

[037] 4)Binders: Dextrose, Sorbitol, Lactose, Microcrystalline Cellulose, Maltodextrin, starch, starch derivative, gum arabic, xanthan gum, calcium phosphate, polyvinylpyrrolidone and polyvinyl alcohol etc.

[038] 5)Lubricants: Polyethylene Glycol 1500 to 12000 grades, Potassium Silicate, Sodium Silicate, Talc Powder, Kaolin, silicon dioxide etc

[039] 6)Colouring agent: Food colours of red, yellow, green, blue, methyl red, methyl blue etc.

[040] 7) Fragrances: Essential oils of lavender, lemongrass, geranium, eucalyptus, citrus, bergamot, peppermint, tea tree, pine, rose, sandalwood, menthol crystals etc, Rose Petal powder, Sandalwood powder and synthetic fragrances in powder and liquid form.

[041] 8)Thickeners: Xanthan gum, corn-starch, arrowroot powder, potato starch, guar gum, carrageenan extract, agar agar, konjac powder.

[042] 9)Preservatives: phenoxyethanol, sodium benzoate,

Methylisothiazolinone, Benzyl Alcohol, Ethylhexylglycerin, Chlorhexidine gluconate, etc.

[043] 10) Cleaning Agents: Cleaning agents may include, but are not limited to Betaine Citrate, Capryl Glucoside, Castile Soap, Cetearyl Glucoside, Cetearyl Octanoate, Cetyl Behenate, Cetyl Caprylate, Cetyl Myristate, Cetyl Palmitate, Cocamide DEA, Cocamide MEA, Cocamide MIPA, Cocamidopropyl Betaine, Cocamidopropyl Hydroxysultaine, Coco Alkyl dimethyl Betaines, Coco Betaine, Coco Glucoside, Coco Glucoside Citrate, Coco Glucoside Tartrate, CocamidopropylamineOxide,Cocoamphoacetate, Cocoamphocarboxyglycinate, Cocoamphodiacetate, Coco-Glucoside Citrate, Coco-Glucoside Hydroxysultaine, Coco-Glucoside sulphate, Coco-Glucoside Tartrate, Coco glyceryl Ether, Cocoyl Isethionate, Cocoyl Sarcosine, Cocoyl Sarcosine Ethyl Ester, Cocoyl Sarcosine Isopropyl Ester, Cocoyl Sarcosine Methyl Ester, Decyl Cocoate, Decyl Glucoside, Disodium Cocoamphodiacetate, Disodium Cocoyl Glutamate, Disodium Cocoyl Glutamate, Disodium Laureth Sulfosuccinate, Glycerol Mono Hydroxy Stearate, Glycerol Monolaurate, Glyceryl Caprate, Glyceryl Caprylate, Glyceryl Cocoate, Glyceryl Cocoate Behenate, Glyceryl Isostearate, Glyceryl Laurate, Lauramidopropyl Betaine, Lauryl Betaine, Lauryl Glucoside, Monoethanolamine Dodecyl Sulfate, Polysorbate 20, Potassium Cocoate, Potassium Lauroyl Glycinate, Potassium Oleate, Potassium Palm Kernelate, Potassium Stearate, Sodium Alkylbenzene sulfonates, Sodium Allyl sulfonate, Sodium Cocoamphoacetate, Sodium Cocoyl Glutamate, Sodium Cocoyl Glycinate, Sodium Cocoyl Isethionate, Sodium Cocoyl Lactylate, Sodium, Sodium Di isobutyl Sulfosuccinate, Sodium Ethyl 2-Sulfolaurate, Sodium Lauroamphoacetate, Sodium Lauroyl Glutamate, Sodium Lauroyl Methyl Isethionate, Sodium Lauryl Sulfoacetate, Sodium Lauroyl Oat Amino Acids, Sodium Lauroyl Sarcosinate, Sodium Laurylglucosides Hydroxypropylsulfonate, Sodium Methyl Ester Sulfonate, Sodium Methyl Lauroyl Taurate, Methyl Ester Sulphonates, Sodium Methyl Oleoyl Taurate Sulfosuccinate, Sodium Myreth Sulfate, Sodium N- Octyl Sulfonate, Sodium Octyl Sulfate, Sodium Oleate, Sodium Oleoyl Sarcosinate, Sodium Palm Kernelate, Sodium PEG-7 Olive Oil Carboxylate, Sodium Pentanesulfonate, Sodium Polyoxyethylene Lauryl Ether Sulfate, Sodium Stearate, Sodium Stearoyl Lactylate, Sodium Lauryl glucosidesHydroxypropyl sulfonate etc. [044] 11 ) Germicidal agents: Triclosan, Chlorhexidine, lodopropynyl butylcarbamate, Quaternary ammonium compounds (Quats) etc.

[045] The preferred embodiment of this invention involves blending the following ingredients within the specified weight ranges: acids 5 to 30% weight, alkali 5 to 50% weight, gliding agents 0.5 to 10% weight, binders 1 to 30% weight, lubricants 0.5 to 10% weight, cleaning agents 5 to 70% weight, preservatives 0.5 to 5% weight, fragrances 0.5 to 10% weight, thickeners 0.25 to 5% weight, colouring agents 0.1 to 2% weight. The resulting mixture is then ground and sieved to pass through a mesh with micron openings ranging from 300 to 500 microns.Once the powder is obtained, it is further processed by compressing it into tablets. This compression process takes place in a climate-controlled room with a temperature maintained below 20 degrees Celsius and a relative humidity below 20. After the tablets are formed, they undergo packaging to maintain their quality and prevent moisture absorption. The preferred packaging options include aluminium pouches, aluminium foil, or HDPE tubes with desiccant caps.

[046] The tablets, containing various cleaning agents, colours, fragrances, and concentrations, can be dissolved in water by users to create customizable liquid soaps or surface cleaners. These concentrated tablets are free from harmful chemicals like sodium lauryl sulphate and can be diluted according to specific needs for achieving the desired concentration.

[047] Following are examples of preparing concentrated effervescent tablet formulations for producing liquid soaps and surface cleaners intended for cleaning skin and various surface areas with the advantageous features.

[048] Example 1

[049] Concentrated effervescent tablets of Glass Cleaner were prepared by the following procedure.

[050] The main components of the tablets are Acids, Alkali, Gliding Agents, binders, lubricants, cleaning agents, preservatives, fragrances, thickeners, and colouring agents all of which can be used in varying combinations.

[051] The following ingredients were taken for the 15 Kgs batch.

1 ) Acids: Citric Acid 900 grams, oxalic acid 900 grams.

2) Alkali: Sodium Bicarbonate 2250 grams, Sodium Carbonate 1050 grams.

3) Gliding agents: Magnesium stearate 675 grams.

4) Binders: Calcium phosphate 375 grams, Microcrystalline cellulose 1125 grams

5) Lubricants: Polyethylene glycol 4000 - 750 grams

6) Cleaning agents: Decyl Glucoside 375 grams, Sodium Cocoyl Isethionate 3000 grams, Sodium Lauryl Sulfoacetate 2625 grams.

7) Preservatives: Phenoxyethanol 150 grams, Sodium benzoate 375 grams

8) Fragrances: Lemongrass Essential Oil 300 grams. 9) Thickeners: Xanthan gum 75 grams.

10) Colouring agents: Methyl blue colour 15 grams.

All the ingredients were weighed in above mentioned proportions.

Step 1 : Citric acid 900 grams and oxalic acid 900 grams were mixed in a ribbon blender and placed in a fluid bed dryer for 20 mins to remove any moisture present.

Step 2: The dried mixture of citric acid and oxalic acid was added to a multi mill to get uniform particle size and then passed through a 500-micron sieve on a sieving machine.

Step 3: The resultant mixture of citric acid and oxalic acid was placed in the dehumidified chamber to avoid moisture contamination.

[052] Step 4: In a rapid mixer and grinder following ingredients were added, Sodium Bicarbonate 2250 grams, Sodium Carbonate 1050 grams, Magnesium stearate 675 grams, Calcium phosphate 375 grams, Microcrystalline cellulose 1125 grams, Decyl Glucoside 375 grams in liquid form, Sodium Cocoyl Isethionate 3000 grams, Sodium Lauryl Sulfoacetate 2625 grams, Phenoxyethanol 150 grams in liquid form, Sodium benzoate 375 grams, Lemongrass Essential Oil 300 grams in liquid form, Xanthan gum 75 grams, Methyl blue colour 15 grams and mixed for 30 minutes.

[053] Step 5: The resultant mixture of Step 4 was removed from the rapid mixer and grinder and placed in a fluid bed dryer for 30 minutes to remove any moisture present.

[054] Step 6: The mixture of Step 5 was removed from the fluid bed dryer and passed through a multi mill. It was further passed through a sieving machine to get uniform particle size.

[055] Step 7: The mixture from Step 6 was added to the ribbon blender. To this the acid mixture of step 3 was added along with polyethylene glycol 4000 grade 750 grams and mixed for 15 minutes.

[056] Step 8: In a climate controlled clean room the temperature is maintained at 20 degrees Celsius and relative humidity less than 15.

[057] Step 9: The obtained mixture of powder from Step 7 is then sent for the tableting process, which is also called the direct compression process. This powder is filled in the tableting machines and with compression the tablets are obtained. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 5 grams per tablet. [058] Step 10: The obtained tablets were checked for hardness and dissolving time in water. It took 6 minutes for the tablets to get completely dissolved in water.

[059] Step 11 : The manufactured tablets were then packed in HDPE tubes having desiccant caps. 10 tablets were packed in one tube.

[060] Step 12: Based on the percentage and combination of cleaning agents and weight of the tablets the dilution was set to 1 Tablet of 5 grams for 250 ml of water for cleaning external glass surfaces of buildings and 1 Tablet of 5 grams for 500 ml of water for cleaning glass surfaces in indoor settings.

[061] The tablets were diluted in 250 ml and 500 ml water to have customised strength of cleaning. The resultant solution was poured in glass bottles with sprayer and sprayed on glass for cleaning. The glass surface cleaner demonstrated excellent cleaning properties in indoor and outdoor settings at both concentrations respectively.

The obtained tablets thus proved to be beneficial and met the objectives of the invention.

[062] Example 2

[063] Concentrated effervescent tablets for making liquid dog soap were prepared by the following procedure.

[064] The main components of the tablets are Acids, Alkali, Gliding Agents, binders, lubricants, cleaning agents, preservatives, fragrances, thickeners, and colouring agents all of which can be used in varying combinations.

[065] The following ingredients were taken for the 15 Kgs batch.

1 ) Acids: Citric Acid 1350 grams, Tartaric acid 450 grams.

2) Alkali: Sodium Bicarbonate 1800 grams, potassium carbonate 750 grams.

3) Gliding agents: Magnesium stearate 375 grams.

4) Binders: Calcium phosphate 300 grams, Maltodextrin 600 grams

5) Lubricants: Polyethylene glycol 6000 - 900 grams

6) Cleaning agents: Sodium Lauroyl Glutamate 4500 grams, Sodium Cocoyl Glutamate 375 grams in liquid, Sodium Lauroyl Methyl Isethionate 2625 grams.

7) Preservatives: Ethylhexylglycerin 300 grams in liquid form

8) Fragrances: Essential Oils of peppermint 150 grams, tea tree 150 grams

9) Thickeners: guar gum 300 grams.

10) Colouring agents: yellow food colour 75 grams.

All the ingredients were weighed in above mentioned proportions. [066] Step 1 : Citric acid 1350 grams and tartaric acid 450 grams were mixed in a ribbon blender and placed in a fluid bed dryer for 20 mins to remove any moisture present.

[067] Step 2: The dried mixture of citric acid and tartaric acid was added to a multi mill to get uniform particle size and then passed through a 500-micron sieve on a sieving machine.

[068] Step 3: The resultant mixture of citric acid and tartaric acid was placed in the dehumidified chamber to avoid moisture contamination.

[069] Step 4: In a rapid mixer and grinder following ingredients were added, Sodium Bicarbonate 1800 grams, potassium carbonate 750 grams, Magnesium stearate 375 grams, calcium phosphate 300 grams, maltodextrin600 grams, Sodium lauroyl glutamate 4500 grams, Sodium cocoyl glutamate 375 grams in liquid, Sodium lauroyl methyl isethionate 2625 grams, Ethylhexylglycerin 300 grams in liquid form, Essential Oils of peppermint 150 grams, tea tree 150 grams, guar gum 300 grams, yellow food colour 75 grams and mixed for 30 minutes.

[070] Step 5: The resultant mixture of Step 4 was removed from the rapid mixer and grinder and placed in a fluid bed dryer for 30 minutes to remove any moisture present.

[071] Step 6: The mixture of Step 5 was removed from the fluid bed dryer and passed through a multi mill. It was further passed through a sieving machine to get uniform particle size.

[072] Step 7: The mixture from Step 6 was added to the ribbon blender. To this the acid mixture of step 3 was added along with polyethylene glycol 6000 grade 900 grams and mixed for 15 minutes.

[073] Step 8: In a climate controlled clean room the temperature is maintained at 20 degrees Celsius and relative humidity less than 15.

[074] Step 9: The obtained mixture of powder from Step 7 is then sent for the tableting process, which is also called the direct compression process. This powder is filled in the tableting machines and with compression the tablets are obtained. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 10 grams per tablet.

[075] Step 10: The obtained tablets were checked for hardness and dissolving time in water. It took 9 minutes for the tablets to get completely dissolved in water. [076] Step 11 : The manufactured tablets were then packed in multilayered aluminium pouches containing one tablet per pouch and the pouches were sealed with band sealer.

[077] Step 12: Based on the percentage and combination of cleaning agents and weight of the tablets the dilution was set to 1 Tablet of 10 grams for 250 ml of water for producing a liquid dog soap. For dogs with small hair coats and mild soap requirements, the tablet can be dissolved in 400 ml of water.

The tablets were diluted in 250 ml of water to produce liquid dog soap. The foam produced was satisfactory and the product was free from Sodium lauryl sulphate. It also helped in reducing single use plastic. The obtained tablets thus proved to be beneficial and met the objectives of the invention.

[078] Example 3

[079] Concentrated effervescent tablets of Laundry cleaning liquid were prepared by the following procedure.

[080] The main components of the tablets are Acids, Alkalis, Gliding Agents, binders, lubricants, colouring agents, fragrances, Cleaning Agents, Germicidal Agents, Preservatives, and Thickeners which can be used in varying combinations. [081] The following ingredients were taken for the 15 Kg batch.

1 ) Acids: Citric Acid 1500 grams, Amino acid 300 grams.

2) Alkali: Sodium Bicarbonate 2250 grams, Calcium Carbonate 300 grams

3) Gliding agents: Boric Acid 375 grams,

4) Binders: Dextrose 600 grams, Calcium Phosphate 600 grams

5) Lubricants: Polyethylene Glycol 6000 - 900 grams,

6) Cleaning Agents: Sodium Laurylglucosides Hydroxypropylsulfonate 2250 grams, Lauryl Glucoside 2250 grams, Decyl Glucoside 2250 grams.

7) Preservatives: Sodium Benzoate 525 grams.

8) Colouring agents: Food Colour Green 30 grams.

9) Fragrance: Lavender Essential Oil 675 grams.

10) Thickeners: Agar agar 150 grams.

11 ) Germicidal Agent: Chlorohexidine 45 grams.

[082] All the ingredients were weighed in above mentioned proportions.

[083] Step 1 : Citric acid 1500 grams and amino acid 300 grams were mixed together in a ribbon blender and placed in a fluid bed dryer for 20 mins to remove any moisture present. [084] Step 2: The dried mixture of citric acid and amino acid was added to a multi mill to get uniform particle size and then passed through a 500-micron sieve on a sieving machine.

[085] Step 3: The resultant mixture of citric acid and amino acid was placed in the dehumidified chamber to avoid moisture contamination.

[086] Step 4: In a ribbon blender Sodium Laurylglucosides Hydroxypropylsulfonate 2250 grams, Lauryl Glucoside 2250 grams, Decyl Glucoside 2250 grams., Boric Acid 375 grams, Dextrose 600 grams, Calcium Phosphate 600 grams, Polyethylene Glycol 6000 - 900 grams, Sodium Benzoate 525 grams, Food Colour Green 30 grams, Lavender Essential Oil 675 grams, Agar-agar 150 grams, Sodium bicarbonate 2250 grams and Calcium carbonate 300 grams and Chlorhexidine 45 grams were added and mixed together for 2 hours to form a thick paste. Using the wet granulation technique, the paste was added to the granulator machine where the particles were air dried in hot air.

[087] Step 5: The granules obtained from Step 4 were added to a multi-mill machine for grinding and passed through a sieving machine with a sieve of 500 microns mesh to obtain particles of uniform size.

[088] Step 6: The sieved mixture of Step 5 is added to a fluid bed dryer machine for 25 minutes to remove any traces of moisture. The mixture is then placed in a dehumidified chamber for 15 minutes to cool down and avoid moisture contamination.

[089] Step 7: The mixture from Step 3 and Step 6 which was kept in the dehumidifier chamber is added to the ribbon blender. All the contents are mixed for 15 minutes.

[090] Step 8: In a climate controlled clean room the temperature is maintained at 20 degrees Celsius and relative humidity less than 15.

[091] Step 9: The obtained mixture of powder from Step 7 is then sent for the tableting process. This powder is filled in the tableting machines and with compression the tablets are obtained. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 30 grams per tablet.

[092] Step 10: The obtained tablets were checked for hardness and dissolving time in water. It took 12 minutes for the tablets to get completely dissolved in water.

[093] Step 11 : The manufactured tablets were then packed in Aluminium foil sachets. [094] Step 12: Based on the percentage and combination of cleaning agents and weight of the tablets the dilution was set to 1 Tablet of 30 grams for 250 ml of water for producing a liquid laundry soap.

[095] The concentrated effervescent tablets formed using the wet granulation method for part ingredients were prepared. These tablets have germicidal activity due to Chlorhexidine, which is effective in killing microbes on clothes. The tablets are produced in a concentrated form, resulting in the requirement for less storage space during transport. The obtained tablets thus proved to be beneficial and met the objectives of the invention.

[096] Example 4

[097] Concentrated effervescent tablets for Hair and Body wash were prepared by the following procedure.

[098] The main components of the tablets are Acids, Alkalis, Gliding Agents, binders, lubricants, colouring agents, fragrances, Cleaning Agents, Preservatives, and Thickeners which can be used in varying combinations.

[099] The following ingredients were taken for the 15 Kg batch.

1 ) Acids: Citric Acid 1875 grams, Ascorbic acid 375 grams.

2) Alkali: Sodium Bicarbonate 1875 grams, Potassium Bicarbonate 375 grams

3) Gliding agents: Magnesium Stearate 525 grams,

4) Binders: Microcrystalline Cellulose 1125 grams, Sorbitol 525 grams

5) Lubricants: Polyethylene Glycol 6000 - 750 grams,

6) Cleaning Agents: Sodium Cocoamphoacetate 3000 grams, Coco Glucoside 1500 grams, Do Sodium Cocoyl Glutamate 100 - 1875 grams.

7) Preservatives: Sodium Benzoate 375 grams

8) Colouring agents: Food Colour Red 75 grams.

9) Fragrance: Lavender Essential Oil 300 grams, Bergamot Essential Oil 375 grams

10) Thickeners: Xanthan Gum 75 grams.

[100] All the ingredients were weighed in above mentioned proportions.

[101] Step 1 : In a ribbon blender Citric Acid 1875 grams, Ascorbic acid 375 grams, Sodium Cocoamphoacetate 3000 grams, Coco Glucoside 1500 grams, Sodium Cocoyl Glutamate 100 - 1875 grams, Magnesium Stearate 525 grams, Microcrystalline Cellulose 1125 grams, Sorbitol 525 grams, Polyethylene Glycol 6000 - 750 grams, Sodium Benzoate 375 grams, Food Colour Red 75 grams, Lavender Essential Oil 300 grams, Bergamot Essential Oil 375 grams, Xanthan Gum 75 grams, were added and mixed together for 2 hours to form a thick paste. Using the wet granulation technique, the paste was added to the granulator machine where the particles were air dried in hot air.

[102] Step 2: The granules obtained from Step 1 were added to a multi-mill machine for grinding and passed through a sieving machine with a sieve of 500 microns mesh to obtain particles of uniform size.

[103] Step 3: The sieved mixture of Step 2 is added to a fluid bed dryer machine for 25 minutes to remove any traces of moisture. The mixture is then placed in a dehumidified chamber for 15 minutes to cool down and avoid moisture contamination.

[104] Step 4: In a climate controlled clean room the temperature is maintained at 18 degrees Celsius and relative humidity less than 18.

[105] Step 5: The obtained mixture of powder from Step 3 is then sent for the tableting process. This powder is filled in the tableting machines and with compression the tablets are obtained. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 25 grams per tablet.

[106] Step 6: The obtained tablets were checked for hardness and dissolving time in water. It took 12 minutes for the tablets to get completely dissolved in water.

[107] Step 7: The manufactured tablets were then packed in Aluminium foil sachets.

[108] Step 8: Based on the percentage and combination of cleaning agents and weight of the tablets the dilution was set to 1 Tablet of 25 grams for 200 ml of water for producing a liquid soap that was effective for cleaning Hair and Skin.

[109] The concentrated effervescent tablets formed using the wet granulation method are safer as they are made from plant-based surfactants and do not contain Sodium lauryl sulphate. The tablets have mild surfactants that can be applied to sensitive skin. Additionally, Vitamin C from ascorbic acid in concentrated effervescent tablets plays a vital role in nourishing and protecting the skin. The obtained tablets thus proved to be beneficial and met the objectives of the invention.

[110] Example5:

[111] Concentrated effervescent tablets of surface cleaner were prepared for cleaning infants’ items by the following procedure. [112] The main components of the tablets are Acids, Alkalis, Gliding Agents, binders, lubricants, colouring agents, fragrances, Cleaning Agents, Preservatives, and Thickeners which can be used in varying combinations.

[113] The following ingredients were taken for the 15 Kg batch.

1 ) Acids: Citric Acid 1800 grams.

2) Alkali: Sodium Bicarbonate 2250 grams, Sodium carbonate 375 grams

3) Gliding agents: Magnesium Stearate 375 grams,

4) Binders: Microcrystalline Cellulose 450 grams, Maltodextrin 300 grams

5) Lubricants: Polyethylene Glycol 4000 - 750 grams,

6) Cleaning Agents: Sodium Lauryol Lactylate 2250 grams, Coco Glucoside 3000 grams, Decyl Glucoside 3000 grams.

7) Preservatives: Phenoxyethanol 150 grams

8) Colouring agents: Food Colour Yellow 75 grams.

9) Fragrance: Geranium Essential Oil 150 grams.

10) Thickeners: Guar Gum 75 grams.

[114] All the ingredients were weighed in above mentioned proportions.

[115] Step 1 : In a ribbon blender Sodium Lauroyl Lactylate 2250 grams, Coco Glucoside 3000 grams, and Decyl Glucoside 3000 grams, Citric acid 1800 grams, Sodium bicarbonate 2250 grams and Sodium carbonate 375 grams, Magnesium Stearate 375 grams, Microcrystalline Cellulose 450 grams, Maltodextrin 300 grams, Polyethylene Glycol 4000- 750 grams, Phenoxyethanol 150 grams, Food Colour Yellow 75 grams, Geranium Essential Oil 150 grams, Guar Gum 75 grams, were added and mixed together for 2 hours to form a thick paste. Using the wet granulation technique, the paste was added to the granulator machine where the particles were air dried in hot air.

[116] Step 2: The granules obtained from Step 1 were added to a multi-mill machine for grinding and passed through a sieving machine with a sieve of 500 microns mesh to obtain particles of uniform size.

[117] Step 3: The sieved mixture of Step 2 is added to a fluid bed dryer machine for 25 minutes to remove any traces of moisture. The mixture is then placed in a dehumidified chamber for 15 minutes to cool down and avoid moisture contamination.

[118] Step 4: In a climate controlled clean room the temperature is maintained at 18 degrees Celsius and relative humidity less than 18. [119] Step 5: The obtained mixture of powder from Step 3 is then sent for the tableting process. This powder is filled in the tableting machines and with compression the tablets are obtained. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 25 grams per tablet.

[120] Step 6: The obtained tablets were checked for hardness and dissolving time in water. It took 12 minutes for the tablets to get completely dissolved in water.

[121] Step 7: The manufactured tablets were then packed in Aluminium foil sachets.

[122] Step 8: Based on the percentage and combination of cleaning agents and weight of the tablets the dilution was set to 1 Tablet of 25 grams for 250 ml of water for producing a high strength surface cleaner and 1 Tablet of 25 grams for 500 ml of water for producing mild strength surface cleaner.

[123] The concentrated effervescent tablets formed using the wet granulation method when dissolved at a dilution of 25 gram tablets for 250 ml of water showed excellent results in cleaning infant feeding bottles. When diluted at a concentration of 25 grams for 500 ml water, it showed good cleaning properties for surface areas and toys that needed mild cleaning. Additionally, the tablets are made from plant-based surfactants that are biodegradable. The obtained tablets thus proved to be beneficial and met the objectives of the invention.

[124] Example 6

[125] Concentrated effervescent tablets of Dish Cleaner were prepared by the following procedure.

[126] The main components of the tablets are Acids, Alkalis, Gliding Agents, binders, lubricants, cleaning agents, preservatives, fragrances, thickeners, and colouring agents all of which can be used in varying combinations.

[127] The following ingredients were taken for the 15 Kg batch.

1 ) Acids: Citric Acid 1350 grams, Ascorbic acid 450 grams.

2) Alkali: Sodium Bicarbonate 1500 grams, Sodium Carbonate 750 grams.

3) Gliding agents: Boric Acid 375 grams.

4) Binders: Maltodextrin 300 grams, Microcrystalline cellulose 450 grams

5) Lubricants: Polyethylene glycol 4000 - 375 grams

6) Cleaning agents: Cocamidopropyl Betaine 2625 grams, Sodium Cocoyl Isethionate 3000 grams, Sodium Cocoamphoacetate 3000 grams.

7) Preservatives: Sodium Benzoate 300 grams 8) Fragrances: Sandalwood Powder 300 grams.

9) Thickeners: Xanthan gum 75 grams.

10) Colouring agents: Food colour Yellow 75 grams.

All the ingredients were weighed in above mentioned proportions.

[128] Step 1 : Citric Acid, 1350 grams, and Ascorbic Acid, 450 grams, Sodium Bicarbonate 1500 grams, Sodium Carbonate 750, Boric Acid 375 grams, Maltodextrin 300 grams, Microcrystalline Cellulose 450 grams Polyethylene glycol 4000 - 375 grams, Cocoamidopropyl Betaine 2625 grams, Sodium Cocoyl Isethionate 3000 grams, Sodium Cocoamphoacetate 3000 grams, Sodium Benzoate 300 grams, Sandalwood Powder 300 grams, Xanthan gum 75 grams, Food color Yellow 75grams were all blended together in a ribbon blender to get uniform distribution of the particles for 20 minutes.

[129] Step 2: This mixture of powder from step 1 is milled in a multi mill and then passed through the sieve of 500 microns on a sieving machine.

[130] Step 3: In a climate-controlled clean room the temperature is maintained at 20 degrees Celsius and relative humidity less than 18.

[131] Step 4: The obtained mixture of powder from Step 2 is then sent for the tableting process, which is also called the direct compression process. This powder is filled in the tableting machines and with compression the tablets are obtained. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 10 grams per tablet.

[132] Step 5: The obtained tablets were checked for hardness and dissolving time in water. It took 8 minutes for the tablets to get completely dissolved in water.

[133] Step 6: The manufactured tablets were then packed in HDPE tubes having desiccant caps. 3 tablets were packed in one tube.

[134] Step 7: Based on the percentage and combination of cleaning agents and weight of the tablets the dilution was set to 1 Tablet of 10 grams for 250 ml of water for cleaning different types of food residue, grease, and stains leaving them free from spots and streaks.

[135] The tablets can be diluted in 250 ml or 500 ml of water to achieve a customised strength for cleaning utensils. Tablets of 10 grams dissolved in 250 ml water showed excellent cleaning properties for kitchen utensils made of stainless steel and Teflon-coated cookware, using a scrubber. A Tablet of 10 grams dissolved in 500 ml water showed excellent cleaning properties for glassware and porcelain with a sponge. The concentrated effervescent tablets, formed using the direct compression method, are suitable for all types of cleaning. The concentration of the solution is customizable, depending on the type of stains and cleaning required. Additionally, the tablets are made from plant-based surfactants. Furthermore, these effervescent tablets reduce the consumption of single use plastic reducing plastic pollution. The obtained tablets thus proved to be beneficial and met the objectives of the invention.

[136] Example 7:

[137] Concentrated effervescent tablets of Car shampoo were prepared by the following procedure.

[138] The main components of the tablets are Acids, Alkalis, Gliding Agents, binders, lubricants, cleaning agents, preservatives, fragrances, thickeners, and colouring agents all of which can be used in varying combinations.

[139] The following ingredients were taken for the 15 Kg batch.

1 ) Acids: Citric Acid 1350 grams, Tartaric acid 600 grams.

2) Alkali: Sodium Bicarbonate 1350 grams, Sodium Carbonate 600 grams.

3) Gliding agents: Magnesium Stearate 450 grams.

4) Binders: Maltodextrin 300 grams, Calcium Phosphate 450 grams

5) Lubricants: Polyethylene glycol 6000 - 375 grams

6) Cleaning agents: Cocamidopropyl Betaine 3000 grams, Sodium Methyl Cocoyl Taurate 3000 grams, Sodium Lauroyl Methyl Isethionate 3000 grams.

7) Preservatives: Sodium Benzoate 300 grams

8) Fragrances: Sandalwood Powder 75 grams.

9) Thickeners: Xanthan gum 75 grams.

10) Colouring agents: Food colour Green 75 grams.

[140] All the ingredients were weighed in above mentioned proportions.

[141] Step 1 : Citric Acid 1350 grams, and Tartaric acid 600 grams were blended in a Rapid Mixer Grinder to achieve a uniform distribution of particles. The mixture was then passed through a Granulator, where it was compacted to form granules of the mixture.

[142] Step 2: Separately, Sodium Bicarbonate 1350 grams, and Sodium Carbonate 600 grams were blended in a Rapid Mixer Grinder to get uniform distribution of the particles. The mixture was then passed through a Granulator, where it was compacted to form granules of the mixture. [143] Step 3: In another container, weigh and add Magnesium Stearate 450 grams, Maltodextrin 300 grams, Calcium Phosphate 450 grams, Polyethylene glycol 6000 - 375 grams, Cocamidopropyl Betaine 3000 grams, Sodium Methyl Cocoyl Taurate 3000 grams, Sodium Lauroyl Methyl Isethionate 3000 grams, Sodium Benzoate 300 grams, Sandalwood powder 75 grams, Xanthan gum 75 grams, Food colour Green 75 grams were blended in a rapid mixer grinder to get uniform distribution of the particles. The mixture was then passed through a Granulator, where it was compacted to form granules of the mixture.

[144] Step 4: After compaction, the granules obtained from the acids in Step 1 are milled in a multi-mill and then passed through the sieve of 500 microns on a sieving machine.

[145] Step 5: After compaction, the granules obtained from the alkalis from Step 2 are milled in a multi-mill and then passed through the sieve of 500 microns on a sieving machine.

[146] Step 6: The granules from Step 3 are milled separately in a multi-mill and then passed through the sieve of 500 microns on a sieving machine.

[147] Step 7: The resultant mixture of step 4, Step 5 and Step 6 were mixed in a ribbon blender and placed in a fluid bed dryer for 30 minutes to remove any moisture present.

[148] Step 8: In a climate-controlled clean room the temperature is maintained at 20 degrees Celsius and relative humidity less than 20.

[149] Step 9: The obtained mixture of powder from Step 7 is then sent for the tableting process. This powder is filled in the tableting machines and the tablets are obtained with compression. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 30 grams per tablet.

[150] Step 10: The obtained tablets were checked for hardness and dissolving time in the water. It took 8 minutes for the tablets to get completely dissolved in water.

[151] Step 11 : The manufactured tablets were then packed in Aluminium Sachets. One tablet per sachet.

[152] Step 12: Based on the percentage and combination of cleaning agents and weight of the tablets the dilution was set to 1 Tablet of 30 grams for 250 ml of water for cleaning the external surface of cars.

[153] The resulting solution was used to remove dirt, grime, and contaminants from the car's exterior and showed excellent cleaning performance. The concentrated effervescent tablets, formed using the dry granulation method, are made from plantbased surfactants that are readily biodegradable in the environment. Additionally, the tablets are in concentrated form, reducing storage space during transportation. Furthermore, effervescent tablets reduce the use of single-use plastic by reducing the consumption of plastic bottles used for packaging. The obtained tablets thus proved to be beneficial and met the objectives of the invention.

[154] Example 8:

[155] Concentrated effervescent tablets of floor cleaner were prepared by the following procedure.

[156] The main components of the tablets are Acids, Alkalis, Gliding Agents, binders, lubricants, cleaning agents, preservatives, fragrances, Germicidal agents, thickeners, and colouring agents all of which can be used in varying combinations.

[157] The following ingredients were taken for the 15 Kg batch.

1 ) Acids: Citric Acid 1350 grams, Tartaric acid 525 grams.

2) Alkali: Sodium Bicarbonate 1500 grams, Potassium Carbonate 375 grams.

3) Gliding agents: Boric Acid 300 grams.

4) Binders: Maltodextrin 300 grams, Sorbitol 300 grams

5) Lubricants: Potassium Silicate 375 grams,

6) Cleaning Agents: Cocamidopropyl Betaine 3000 grams, Sodium Lauryl Sulfoacetate 3000 grams, Sodium Diamyl Sulfoacetate 3000 grams.

7) Preservatives: Sodium Benzoate 150 grams

8) Colouring agents: Food Colour Yellow 75 grams.

9) Thickeners: Guar Gum 150 grams

10) Fragrance: Rose Petal Powder 375 grams

11 ) Germicidal Agent: Triclosan 300 grams

[158] All the ingredients were weighed in above mentioned proportions.

[159] Step 1 : All ingredients were ground separately, one at a time, and passed through a sieve of 500 microns mesh size to obtain a uniform particle size of each ingredient.

[160] Step 2: The ground and sieved Citric acid 1350 grams, and Tartaric acid 525 grams were mixed in a ribbon blender and placed in a fluid bed dryer for 20 minutes to remove any moisture present. [161] Step 3: The ground and sieved Sodium bicarbonate 1500 grams and Potassium Carbonate 375 grams were mixed in a ribbon blender and placed in a fluid bed dryer 20 minutes to remove any moisture present.

[162] Step 4: The ground and sieved Boric Acid 300 grams., Maltodextrin 300 grams, Sorbitol 300 grams, Potassium Silicate 375 grams, Cocamidopropyl Betaine 3000 grams, Sodium Lauryl Sulfoacetate 3000 grams, Sodium Diamyl Sulfoacetate 3000 grams, Triclosan 300 grams, Sodium Benzoate 150 grams, Food Colour Yellow 75 grams, Guar Gum 150 grams, Rose Petal Powder 375 grams, were mixed in a ribbon blender and placed in a fluid bed dryer for 20 minutes to remove any moisture present.

[163] Step 5: In a ribbon blender, all the above ingredients from step 2, step 3 and step 4 are added and are mixed for 1 hour. The obtained mixture is then sent for the tableting process, which is also called the direct compression process.

[164] Step 6: In a climate-controlled room the temperature is maintained at 18 degrees Celsius and relative humidity less than 18. The obtained powder from step 5 is filled in the tableting machines and with compression, the tablets are obtained. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 10 grams per tablet.

[165] Step 7: The obtained tablets were checked for hardness and dissolving time in the water. It took 8 minutes for the tablets to get completely dissolved in water.

[166] Step 8: The manufactured tablets were then packed in HDPE tubes having desiccant caps. 3 tablets were packed per tube.

[167] Step 9: Based on the number of active ingredients and weight of the tablet the Floor cleaning tablet can be diluted in 250 millilitres of water.

[168] The concentrated floor-cleaning effervescent tablets were made using the Direct Compression Method. The tablets have the Germicidal agent Triclosan which kills the microorganisms resulting in a safer environment. Additionally, the effervescent tablets reduce the consumption of single use plastic, reducing plastic pollution. Moreover, these tablets are in concentrated form, saving storage space during transportation. The tablets thus obtained were found to be advantageous and fulfilling the objects of the invention.

[169] Best Method:

[170] The manufacturing process of concentrated effervescent tablets containing cleaning agents involves the careful selection and treatment of ingredients, understanding ingredient reactions, controlling climate parameters, and choosing appropriate packaging for the products. Concentrated effervescent tablets of cleaning agents for producing liquid soaps and multiple surface cleaners was prepared by the following procedure.

[171] The main components of the tablets are Acids, Alkali, Gliding Agents, binders, lubricants, cleaning agents, preservatives, fragrances, thickeners, and colouring agents all of which can be used in varying combinations. Dry granulation and wet granulation techniques are employed for different ingredients, while Lubricants are directly added as direct compression during the tableting stage.

[172] The following ingredients were taken for the 15 Kgs batch.

1 ) Acids: Citric Acid 1350 grams, Oxalic acid 750 grams.

2) Alkali: Sodium Bicarbonate 1500 grams, sodium carbonate 750 grams.

3) Gliding agents: Magnesium stearate 450 grams.

4) Binders: Calcium phosphate 375 grams, Microcrystalline cellulose 750 grams

5) Lubricants: Polyethylene glycol 4000 - 750 grams

6) Cleaning agents: Lauryl glucoside 2250 grams in liquid form, Methyl Ester Sulphonate 2250 grams, Sodium Cocoyl Isethionate 2250 grams.

7) Preservatives: Phenoxyethanol 300 grams in liquid form

8) Fragrances: Essential Oils of lemongrass 300 grams in liquid form

9) Thickeners: Xanthan gum 150 grams

10) Colouring agents: green food colour 75 grams.

11 ) Germicidal Agent: Benzalkonium Chloride 750 grams in liquid form

[173] All the ingredients were weighed in above mentioned proportions.

[174] Step 1 : Citric Acid 1350 grams, Oxalic acid 750 grams, Magnesium stearate 450 grams, Calcium phosphate 375 grams, Microcrystalline cellulose 750 grams are added to rapid mixer and grinder and mixed for about 20 minutes.

[175] Step 2: The resultant powder mixture of step 1 is added to the granulator machine, where granules are formed in hot dry air. These granules are then added to multi-mill to break down the particle size and then sieved in a sieving machine with 500 micron sieve.

[176] Step 3: The sieved mixture of Step 2 is added to a fluid bed dryer machine for 15 minutes to remove any traces of moisture. The mixture is then placed in a dehumidified chamber to cool down and avoid moisture contamination. [177] Step 4: In a ribbon blender Sodium bicarbonate 1500 grams, sodium carbonate 750 grams, Lauryl glucoside 2250 grams in liquid form, Methyl Ester Sulphonate 2250 grams, Sodium Cocoyl Isethionate 2250 grams, Phenoxyethanol 300 grams in liquid form, essential oil of lemongrass 300 grams in liquid form, Xanthan gum 150 grams, green food colour 75 grams, Benzalkonium Chloride 750 grams in liquid form were added and was mixed for a duration of 2 hours until it formed a consistent thick paste. Subsequently, the paste was incorporated into a granulator machine using the wet granulation technique, and the granules were dried using hot air.

[178] Step 5: The granules obtained from Step 4 were added to a multi-mill machine for grinding and passed through a sieving machine with a sieve of 500 microns mesh to obtain particles of uniform size.

[179] Step 6: The sieved mixture of Step 5 is added to a fluid bed dryer machine for 25 minutes to remove any traces of moisture. The mixture is then placed in a dehumidified chamber for 15 minutes to cool down and avoid moisture contamination.

[180] Step 7: The mixture from Step 3 and Step 6 which was kept in the dehumidifier chamber is added to the ribbon blender along with polyethylene glycol 4000 - 750 grams. All the contents are mixed for 15 minutes.

[181] Step 8: In a climate controlled clean room the temperature is maintained at 20 degrees Celsius and relative humidity less than 15.

[182] Step 9: The obtained mixture of powder from Step 7 is then sent for the tableting process. This powder is filled in the tableting machines and with compression the tablets are obtained. The tableting machine is adjusted to provide the desired hardness and weight of the tablet to 10 grams per tablet.

[183] Step 10: The obtained tablets were checked for hardness and dissolving time in water. It took 10 minutes for the tablets to get completely dissolved in water.

[184] Step 11 : The manufactured tablets were then packed in small HDPE tubes with desiccant caps. 3 Tablets were packed in one small HDPE tube.

[185] Step 12: Based on the percentage and combination of cleaning agents and weight of the tablets the dilution was set to 1 Tablet of 10 grams for 250 ml of water for producing a liquid soap and multi-surface cleaner. For more sensitive skin type or milder cleaning the 10grams Tablet can be dissolved in 500 ml of water. [186] The tablet thus produced from this method was dissolved in 250 ml water to obtain a liquid soap and multi-surface cleaner. The resultant liquid showed excellent foaming and cleaning properties. Due to the non-carcinogenic nature of the cleaning agents, it is safer to use the liquid soap produced as a hand wash, body wash or a shampoo. The Tablet offers the benefit of customising the cleaning strength as per requirement and due to the safe nature of ingredients it can be used on multiple surfaces for cleaning. The inventive product considerably reduces the consumption of single use plastic and the need for buying multiple cleaning products. The presence of a germicidal agent in the product also provides antibacterial properties to the cleaning solution. The obtained tablets thus proved to be beneficial and met the objectives of the invention.

Claims

CLAIMS:

1. Concentrated effervescent tablet formulations of cleaning agents and surfactants for preparing liquid soaps and surface cleaning solution for use on skin and surfaces comprising of 5% to 30% weight acid, and 5% to 50% weight alkali, wherein the composition is in the form of a tablet.

2. A concentrated effervescent tablet composition of claim 1 wherein the cleaning agents are plant-based surfactants, used alone or in combinations thereof.

3. A concentrated effervescent tablet composition of claim 1 and claim 2 where the acid source is citric acid, oxalic acid, maleic acid, succinic acid, malic acid, ascorbic acid, fumaric acid, tartaric acid, malonic acid, adipic acid, boric acid, amino acids, nicotinic acid and ascorbic acid or other water-soluble acids or food acids used alone or in combinations thereof.

4. A concentrated effervescent tablet composition of claim 1 and claim 2 where the Alkali source is sodium carbonate, potassium carbonate, calcium carbonate, ammonium carbonate, sodium sesquicarbonate, sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate, used alone or in combinations thereof.

5. A concentrated effervescent tablet composition, as claimed in claim 1 and claim 2, wherein the manufacturing process involves weighing, grinding, sieving, drying, and mixing the ingredients, and utilises one or more manufacturing techniques including dry granulation, wet granulation, and/or direct compression, either individually or in combination.

6. A concentrated effervescent tablet composition, as claimed in claim 1 , claim 2, claim 3, claim 4, and claim 5, wherein the size, shape, and weight of the tablet can be customised to meet the specific requirements of the cleaning application solution.

7. A concentrated effervescent tablet formulation of claim 1 and claim 2 wherein the tablets contain binding agents, gliding agents, lubricants, preservatives, fragrances, thickeners, and colouring agents used alone or in combinations thereof.

8. A concentrated effervescent tablet combination, as claimed in Claim 1 to 7, that offers users the flexibility to dissolve it in different quantities of water, resulting in a versatile and customizable cleaning product with varying strength.

9. A concentrated effervescent tablet composition, as claimed in claim 1 to 8, wherein the tablets are produced under controlled manufacturing conditions with a temperature below 30 degrees Celsius and relative humidity below 30.

10. A concentrated effervescent tablet composition, as claimed in claim 1 to 9, wherein the tablets are packaged in various forms, including aluminium foil, pouches, or HDPE tubes with desiccant caps for preventing moisture ingress.