A no-rinse, oil-removing towelette and method of making same

Abstract

The application discloses a quick-oil-absorbing no-wash hair-removing dry towel and a preparation method thereof. The no-wash hair-removing dry towel comprises a film cloth base material and an oil absorption efficiency layer. The oil absorption efficiency layer is formed by spraying and coating an oil absorption composition aqueous solution on the film cloth base material, and the dry towel is prepared by drying. When in use, the dry towel can be used in any place without water, and the oil absorption effect can be achieved by wiping the scalp and hair. After use, no white remains and no itching occurs, and the appearance and life quality of a user are quickly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of daily sanitary cleaning products, and is a no-wash hair oil-removing dry towel and a preparation method thereof. BACKGROUND

[0002] The no-wash hair cleaning product can conveniently and quickly improve the appearance of hair and the image of a user, and does not need to be washed with clean water after use, which can effectively help the user to get rid of oily hair, improve the spirit and life quality in some special scenes such as bedridden patients, puerpera and fashion crowds with frequent hairstyle changes.

[0003] The hair dry cleaning products on the market are of spray type and powder type, the spray type has a pressurized aluminum bottle, and contains a large amount of aerosol propellants such as dimethyl ether, propane and butane organic solvents, which are flammable and explosive and have a certain danger, and cannot be carried on an airplane or train or ship. The powder type is used, and the powder is easy to scatter and accumulate together, causing the scalp and hair to be white, and the powder is easy to be inhaled by the human body, and long-term use is harmful to human health.

[0004] Some hair cleaning wet wipes on the market claim to be no-wash, but the products are basically non-woven fabrics containing a water solution of a surfactant and a fast-drying volatile component (such as an ethanol solvent). Although the products are convenient to carry and can be used anytime and anywhere, the products contain a certain proportion of water, and still correspond to washing the hair, and need a certain airing time after use, the drying speed is not instant, and the residual surfactant can cause scalp irritation and dry itching. The addition of the fast-drying volatile component can accelerate the drying speed of the hair, but can irritate the scalp and harm the health of the hair, and has obvious defects.

[0005] Combining the advantages and disadvantages of the spray powder product and the cleaning wet wipe, the product cannot provide a solution to solve the problem of oily hair in a short time for consumers, and therefore it is necessary to develop a no-wash hair oil-removing dry towel and a preparation method thereof, which do not contain water, a surfactant and a solvent, are safe and non-irritating, have instant oil-removing effect, and are not limited by transportation for carrying. SUMMARY

[0006] In order to solve the problems in the prior art, the present application provides a no-wash hair oil-removing dry towel and a preparation method thereof, which do not contain water, a surfactant and a solvent, are safe and non-irritating to the human body, have instant oil-removing effect, and are not limited by transportation for carrying.

[0007] A preparation method of a no-wash hair oil-removing dry towel with fast oil absorption comprises the following steps:

[0008] S1: preparing an oil-absorbing composition:

[0009] (1) Take each raw material component by weight percentage: oil-absorbing powder 5-20%, suspension agent 0.01-0.1%, polyol 0.1-5%, nutrient component 0.01-1%, preservative 0.01-1%, pH regulator 0-0.1%, fragrance 0-5%, and the rest is solvent;

[0010] (2) Put the solvent, polyol and suspension agent into a stirring pot, heat to dissolve at 70-80°C, and then stir uniformly until the temperature drops below 45°C;

[0011] (3) Put the nutrient component, preservative, pH regulator and fragrance into the stirring pot, and stir uniformly to obtain a suspension;

[0012] (4) Put the oil-absorbing powder into the stirring pot, close the pot cover, and stir until uniform and without clumping; continue to stir and cool to below 35°C to obtain an oil-absorbing composition;

[0013] S2 Preparation of oil-removing towel:

[0014] (1) Uniformly spray the oil-absorbing composition on the film cloth substrate through a spraying device, with the liquid amount of the oil-removing composition being 50-100 g / m 2 , and the mass of the oil-absorbing powder fixed on the film cloth substrate being 7-55% of the mass of the film cloth substrate;

[0015] (2) Remove the excess water from the film cloth substrate by double-roller extrusion, and the liquid content of the extruded film cloth substrate is 120%-200%;

[0016] (3) Remove the water from the film cloth substrate by drying, and then wind and package to obtain the product.

[0017] As a preferred embodiment, the oil-absorbing powder includes porous silica powder particles, kaolin, cassava starch, rice starch and corn starch.

[0018] As a preferred embodiment, the suspension agent is gellan gum.

[0019] As a preferred embodiment, the solvent is water.

[0020] As a preferred embodiment, the polyol includes propylene glycol, hexylene glycol, methyl propylene glycol, 1,3-butanediol and glycerol.

[0021] As a preferred embodiment, the nutrient component includes D-panthenol, silk fibroin and plant extract.

[0022] As a preferred embodiment, the preservative includes phenoxyethanol, sodium benzoate, potassium sorbate and sodium dehydroacetate.

[0023] In one preferred embodiment, the pH adjuster includes citric acid and trisodium citrate.

[0024] In one preferred embodiment, the fragrance agent includes cosmetic fragrances and essential oils.

[0025] In one preferred embodiment, the membrane substrate comprises a spunlace nonwoven fabric and a paper substrate, and the basis weight of the membrane substrate is 35-55 g / m². 2 .

[0026] In one preferred embodiment, the raw materials are composed of: 5-15% oil-absorbing powder, 0.02-0.04% suspending agent, 0.1-1% polyol, 0.05-0.1% nutrients, 0.01-0.5% preservative, 0.01-0.1% pH adjuster, 0-0.05% fragrance, and the balance being solvent.

[0027] As a preferred embodiment, the drying process is hot air drying at 50-150℃, and the drying rate is 5-30m / min.

[0028] As another objective of this invention, this invention also provides a quick-absorbing, no-shampoo hair drying towel prepared using the above method.

[0029] This invention utilizes the loose texture of fibers, using nonwoven fabric or pulp as the film substrate, to evenly fix oil-absorbing powder onto the fiber web. The no-rinse oil-absorbing wipes absorb oil quickly and in large quantities, with a moderate amount of powder that does not cause powder buildup on the scalp and hair. They are water-free, surfactant-free, and solvent-free, causing no irritation to the scalp and hair, and are convenient to carry, not limited by transportation. The manufacturing of these functional wipes can be completed simply by adding a simple spray drying device to existing spunlace nonwoven fabric production equipment. There are few quality control points, the preparation process is simple, and they can be subsequently cut into rolls to produce wipes of different packaging specifications according to different needs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram illustrating the powder fixation effect of the oil-absorbing cloth in each embodiment. Detailed Implementation

[0031] To facilitate understanding of the present invention, a more comprehensive description will be given below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0032] The no-wash hair oil-absorbing dry towel prepared in the following examples consists of a membrane fabric substrate and an oil-absorbing layer. The oil-absorbing layer is made by spraying an aqueous solution of an oil-absorbing composition onto the membrane fabric substrate and then drying it. It does not need to be wetted before use and can be taken out and used in any situation. Wiping the scalp and hair will achieve the oil-absorbing effect. It leaves no white residue and does not cause itching after use, quickly improving the user's appearance and quality of life.

[0033] The preparation process of the degreasing composition is as follows:

[0034] 1. Weigh each raw material component according to the formula requirements;

[0035] 2. To prepare the suspension, add the polyol and suspending agent to a mixing pot, add water and start stirring. Heat to 70-80℃ to dissolve and stir evenly. Then start cooling.

[0036] 3. Cool down to below 45℃, add nutrients, preservatives, pH adjusters, and fragrances to the mixing pot, stir evenly, and the suspension is obtained;

[0037] 4. Add the oil-absorbing powder to the mixing pot, close the lid, and stir until it is uniform and free of lumps.

[0038] 5. Continue stirring and cool down to below 35°C to obtain the degreasing composition.

[0039] Oil-absorbing powder can be a complex of various oil-absorbing particles or a single component, mainly composed of porous silica particles with a diameter of 3–20 μm, an oil absorption capacity of 100–400 ml / 100 g, and a highly spherical, hydrophobic, porous microsphere powder shape. It is an inert material and does not irritate the skin. Other oil-absorbing powders can be added, such as kaolin, tapioca starch, rice starch, corn starch, etc.

[0040] The suspending agent is gellan gum, which can provide suspending force without increasing viscosity, so that the oil-absorbing powder is evenly distributed in the solution, without settling or clumping, ensuring that the spray nozzle is not blocked by the oil-absorbing powder and that the liquid can be discharged evenly; the amount of suspending agent can be increased or decreased according to the proportion of powder in the composition.

[0041] The polyols, such as propylene glycol, hexanediol, methyl propylene glycol, and 1,3-butanediol, are used to ensure that the oil-absorbing powder adheres stably to the fiber gaps of the membrane substrate, so that the oil-absorbing powder will not float and fall off the membrane substrate during the rolling and slitting process after drying.

[0042] Hair nutrients can include D-panthenol, silk protein, plant extracts, etc., which nourish and soften hair and reduce frizz caused by friction from the mask substrate.

[0043] The preservatives are a combination of phenoxyethanol, sodium benzoate, potassium sorbate, etc., which serve to impart preservative efficacy to the degreasing composition and reduce the risk of microorganisms during production.

[0044] The pH range should be controlled between 4.5 and 7.0, which is slightly acidic to neutral. This range is the most suitable pH range for hair and scalp, reducing irritation.

[0045] Fragrances give dry towels a pleasant scent, enhancing the user experience.

[0046] The viscosity of the degreasing composition is controlled to be no higher than 500 mPa·s. The very low viscosity ensures that the degreasing composition can quickly penetrate the membrane substrate, allowing the fibers to absorb and fix the powder.

[0047] The membrane substrate can be a spunlace nonwoven fabric, composed of single or combined fibers of viscose and polyester; the fibers can also be cotton, bamboo pulp, or wood pulp. The membrane substrate can also be a paper substrate. The hydrophilic fibers in the membrane substrate have water-absorbing properties, which can absorb and lock the liquid composition onto the fiber web. The basis weight of the membrane substrate is 35-55 g / m². 2 .

[0048] The degreasing composition is sprayed onto a membrane substrate, where the fibers adhere and entangle to form an integral structure that secures the oil-absorbing powder. The spraying system uses a metering pump to control the flow rate of the degreasing composition, with a flow rate of 50-100 g / m³. 2 The oil-absorbing powder fixed on the membrane substrate accounts for 7-55% of the membrane substrate's mass. The spray holes have a diameter of 2mm and are arranged in a straight line on the spray pipes. 3-4 spray pipes form a group of liquid adding devices, and the spray pipes are arranged above the membrane substrate at intervals of 100-200mm.

[0049] By extruding the fiber web with two rollers, the oil-absorbing powder is locked and fixed in the gaps of the fiber web, and some excess water can be squeezed out, shortening the drying time; the liquid content of the extruded membrane substrate is in the range of 120%-200%.

[0050] The drying process involves hot air drying at 50-150℃ and a drying rate of 5-30 m / min. The drying temperature and rate are adjusted according to whether fragrances are added to the degreasing composition to ensure that the aroma is retained after drying.

[0051] The dried towels are rolled up and packaged to obtain the no-shampoo hair degreasing towels of the present invention.

[0052] Example

[0053] The composition formulations and process parameters for each embodiment are shown in Table 1.

[0054] Test case

[0055] Detect the dispersion uniformity of the oil-absorbing powder on the fabric substrate. The method is carried out according to 4.1.2 in GB / T 24218.1-2009. Use a round knife sampler to take samples, and the fabric area is at least 500 cm 2 , and intercept 5 samples. Compare the unevenness rate of mass per unit area (i.e., the coefficient of variation). If the coefficient of variation ≤ 5.0%, it is qualified.

[0056] Detect the adhesion firmness of the oil-absorbing powder on the fabric substrate. Cut the dry cloth into a circle with an area of at least 100 cm 2 . Clamp and fix it, hang it vertically, shake the fabric surface, and if there is no obvious powder falling off, it is qualified.

[0057] In the example, 40 g of black non-woven fabric (50% viscose + 50% polyester) is selected as the fabric material, and the area of the circular dry cloth sample is 100 cm 2 . The black fabric surface can clearly compare the distribution uniformity of the powder. Compare the powder fixing effects of the oil-absorbing dry cloth obtained under different formulation ratios and process parameters, as shown in Table 1 and Figure 1 shown.

[0058] Table 1

[0059]

[0060] From Figure 1 the detection results, comparing Example 1 and Example 2, under the same process parameters, the content of gellan gum in the degreasing composition is different, which affects the distribution uniformity of the oil-absorbing powder on the dry cloth.

[0061] Comparing Example 3 and Example 4, under the same process parameters, the differences in the addition amounts of the suspending agent and propylene glycol in the degreasing composition can affect the distribution uniformity of the oil-absorbing powder on the dry cloth and the firmness of the oil-absorbing powder on the dry cloth.

[0062] Comparing Example 5 and Example 6, under the same process parameters, the difference in the double-roller extrusion pressure affects the distribution uniformity of the oil-absorbing powder on the dry cloth and the firmness of the oil-absorbing powder on the dry cloth.

[0063] Comparing Example 2 and Example 4, the differences in the drying rate and temperature affect the distribution uniformity of the oil-absorbing powder on the dry cloth, but the firmness of the oil-absorbing powder on the dry cloth is qualified.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A method for preparing a quick-absorbing, no-shampoo hair drying towel, characterized in that, Includes the following steps: S1 Preparation of oil-absorbing composition: (1) Weigh out each raw material component by weight percentage: 5-15% oil-absorbing powder, 0.02-0.04% suspending agent, 0.1-1% polyol, 0.05-0.1% nutrients, 0.01-0.5% preservative, 0.01-0.1% pH adjuster, 0-0.05% fragrance, with the remainder being solvent; the suspending agent is gellan gum; (2) Add the solvent, polyol and suspending agent into a mixing pot, heat to 70-80℃ to dissolve and stir evenly, then cool to below 45℃; (3) Add nutrients, preservatives, pH adjusters and fragrances into a mixing pot and stir evenly to obtain a suspension. (4) Add the oil-absorbing powder into the mixing pot, close the pot lid, and stir until uniform and free of lumps; continue stirring and cool down to below 35°C to obtain the oil-absorbing composition. Preparation of S2 degreasing towels: (1) The oil-absorbing composition is evenly sprayed onto the membrane substrate using a spraying device. The amount of oil-absorbing composition applied is 50-100 g / m². 2 The mass of the oil-absorbing powder fixed on the membrane substrate is 7-55% of the mass of the membrane substrate; (2) The excess moisture of the membrane substrate is removed by double roller extrusion, and the liquid content of the extruded membrane substrate is 120%-200%. (3) The moisture in the membrane substrate is removed by the drying process, and then it is obtained after winding and packaging. The oil-absorbing powder includes porous silica powder particles, kaolin, cassava starch, rice starch, and corn starch; The solvent is water; The polyols include propylene glycol, hexanediol, methylpropanediol, 1,3-butanediol, and glycerol; The nutrients include D-panthenol, silk protein, and plant extracts; The preservatives include phenoxyethanol, sodium benzoate, potassium sorbate, and sodium dehydroacetate; The pH adjuster includes citric acid and trisodium citrate; The fragrances include cosmetic fragrances and essential oils.

2. The preparation method according to claim 1, characterized in that, The membrane substrate includes spunlace nonwoven fabric and paper substrate, and the basis weight of the membrane substrate is 35-55 g / m². 2 .

3. The preparation method according to claim 1, characterized in that, The drying process involves hot air drying at 50-150℃, with a drying rate of 5-30 m / min.

4. A quick-absorbing, no-shampoo hair dryer prepared by the method according to any one of claims 1-3.

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