A comfortable glove

Abstract

This invention provides a formulation for coating elastomeric articles with antiperspirant properties. The formulation is a mixture of an organosilicon emulsion and water, wherein the mixture further includes antiperspirant additives and hygroscopic polymer additives. This invention also provides a method for producing elastomeric articles with antiperspirant properties.

Description

Technical Field

[0001] This invention relates to an antiperspirant elastomer product, specifically to an antiperspirant agent, and a method for producing an antiperspirant elastomer product containing the antiperspirant agent. Background Technology

[0002] One of the problems with wearing gloves is sweating. After prolonged use, a severely sealed environment forms between the hands and the gloves. Therefore, due to moisture and lack of air circulation, the inside of the gloves can become a breeding ground for microorganisms. Thus, it is necessary to find a solution to reduce the amount of moisture released from the skin when wearing gloves.

[0003] Various sweat-absorbing or moisture-wicking materials have been developed to address the problem of sweating during glove wearing, particularly gloves with an inner layer containing materials that absorb sweat and keep the wearer's hands dry, thereby improving wearing comfort. However, none of these methods teach the introduction of antiperspirant additives and moisture-wicking polymer additives into a mixture of silicone emulsion and water to create a coating solution that is applied to the inner layer of the glove to impart antiperspirant properties, particularly reducing the formation of sweat on the skin. This invention provides a coating solution formulation that not only solves the problem of sweating when wearing gloves but also achieves comfortable wearing without compromising the glove's mechanical properties. Summary of the Invention

[0004] To provide a basic understanding of certain aspects of the invention, a brief overview of the invention is provided below. This overview is not a broad summary of the invention. Its sole purpose is to introduce some concepts of the invention in a simplified form as a prelude to the more detailed description that follows.

[0005] The purpose of this invention is to provide a formulation for coating an elastomer product with antiperspirant properties, the formulation being a mixture of silicone emulsion and water, wherein the mixture further comprises an antiperspirant additive and a moisture-absorbing polymer additive coated onto the inner layer of the elastomer product.

[0006] Another object of the present invention is to provide a method for producing an elastomeric article with antiperspirant properties, the method comprising applying a formulation to the elastomeric article, the formulation comprising a mixture of an organosilicon emulsion and water, and an antiperspirant additive and a moisture-wicking polymer additive added therein.

[0007] Another object of the present invention is to provide an elastomeric product with antiperspirant properties, which can reduce the amount of water released from the skin.

[0008] Therefore, these objectives can be achieved by following the teachings of this invention. This invention provides a formulation for coating an elastomeric article with antiperspirant properties. The formulation is a mixture of a silicone emulsion and water, wherein the mixture further comprises an antiperspirant additive and a hygroscopic polymer additive. This invention also provides a method for producing an elastomeric article with antiperspirant properties. Attached Figure Description

[0009] To gain a detailed understanding of the above-described features of the present invention, a more specific description of the invention, which has been briefly summarized above, is given in conjunction with embodiments, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings only show representative embodiments of the invention and should not be considered as limiting the scope of the invention, as the invention may have other equally effective embodiments.

[0010] Referring to the following figure, the features, beneficial effects, and advantages of the present invention will become apparent, wherein similar reference numerals in the figure refer to similar structures, wherein:

[0011] Figure 1 A method for producing an elastomeric article with antiperspirant properties according to an embodiment of the present invention is shown. Detailed Implementation

[0012] The present invention will now be described with reference to specific embodiments and accompanying drawings. It should be understood that the drawings and their detailed description are not intended to limit the invention to the specific forms disclosed; rather, the invention encompasses all modifications, equivalent substitutions, and alternatives falling within the scope of the invention as defined by the claims. In this specification, “a” or “an” means “at least one.” Terms such as “comprising,” “including,” “having,” “containing,” or “involving,” and variations thereof, are broad and cover the subjects listed thereafter, equivalents, and other subjects not listed, but do not exclude other additives, ingredients, integrals, or steps. Similarly, for applicable legal purposes, the term “comprising” is considered synonymous with the terms “including” or “containing.” Any discussions in related documents, materials, articles, etc., contained in this specification are provided only to give background to the invention and do not imply or represent that any or all of these matters constitute part of the prior art or common general knowledge in the field related to the invention.

[0013] In this disclosure, whenever the transitional phrase "comprising" is used before a composition, element, or group of elements, it should be understood that the same composition is also taken into consideration.

[0014] The invention will now be described with reference to various embodiments to fully and completely convey the scope of the invention to those skilled in the art. Furthermore, numerical values ​​and ranges are provided for various aspects of the embodiments. These values ​​and ranges are merely examples and are not intended to limit the scope of the claims. Additionally, some materials are identified as applicable to various aspects of the embodiments of the invention, but are not intended to limit the scope of the invention.

[0015] This invention proposes a formulation for coating elastomer products with antiperspirant properties, which reduces the amount of water released from the skin and makes them more comfortable to wear.

[0016] According to one embodiment of the invention, the formulation is a mixture of silicone emulsion and water, wherein the formulation further comprises an antiperspirant additive and a hygroscopic polymer additive. More specifically, the antiperspirant additive is used to inhibit sweat gland perspiration, thereby reducing the formation of sweat on the skin, while the hygroscopic polymer additive is used to absorb moisture released from the skin.

[0017] According to one embodiment of the present invention, the silicone emulsion is selected from polydimethylsiloxane, polymethylhydrosiloxane, or combinations thereof, and has a mass concentration of 0.05%-0.50%. Preferably, the silicone emulsion is polydimethylsiloxane with a mass concentration of 0.10%-0.30%. More preferably, it is polydimethylsiloxane with a mass concentration of 0.20%, which can be used as a wearable aid to facilitate wearing.

[0018] According to one embodiment of the present invention, the antiperspirant additive is selected from aluminum hydroxychloride, tetrachloroalumina zirconium, or a combination thereof, with a mass concentration of 5.00%-25.00%. Preferably, the antiperspirant additive is an aluminum hydroxychloride metal salt with a mass concentration of 10.00%-20.00%. More preferably, it is an aluminum hydroxychloride metal salt with a mass concentration of 15.00%. The metal salt based on aluminum hydroxychloride can dissolve on the skin and sweat glands to form a gel layer, preventing hand sweating after prolonged wearing of gloves.

[0019] According to one embodiment of the present invention, the hygroscopic polymer additive is selected from polyethylene glycol, amylose, bentonite, or any combination thereof, with a mass concentration of 0.01%-1.00%. Preferably, the hygroscopic polymer additive is polyethylene glycol with a mass concentration of 0.05%-0.90%. More preferably, the mass concentration of polyethylene glycol is 0.10%. The polar functional groups in the hygroscopic polymer additive absorb excess moisture while keeping the skin naturally dry without causing skin irritation.

[0020] According to one embodiment of the invention, an anti-adhesion agent is added to reduce glove adhesion caused by the combination of antiperspirant additives and hygroscopic polymer additives in the coating solution. The anti-adhesion agent is selected from potassium stearate, calcium stearate, or a combination thereof, with a mass concentration of 0.05%-1.00%. Preferably, the anti-adhesion agent is potassium stearate with a mass concentration of 0.10%-0.90%. More preferably, the mass concentration of potassium stearate is 0.20%.

[0021] According to one embodiment of the invention, the elastomeric article is a glove, wherein the elastomeric article is a glove with antiperspirant properties. More preferably, the elastomeric article is a powder-coated or powder-free natural rubber (NR) or acrylonitrile butadiene rubber (NBR) inspection glove.

[0022] The present invention also relates to a method (100) for producing an elastomeric article with antiperspirant properties.

[0023] According to one embodiment of the present invention, the method (100) includes the following steps: adding an antiperspirant additive and a moisture-absorbing polymer additive to a mixture of silicone emulsion and water to prepare a coating solution, applying the coating solution to the inner layer of a latex film to prepare an elastomer product with antiperspirant properties.

[0024] According to one embodiment of the invention, the method further includes adding an anti-sticking agent to the coating solution when a stickiness problem occurs.

[0025] According to one embodiment of the invention, the coating solution is applied after chlorination during the manufacturing process of elastomer articles, particularly in the manufacturing process of gloves.

[0026] According to one embodiment of the invention, the coating solution is applied by immersing the latex film in the coating solution for 5 to 10 seconds. More preferably, the latex film is immersed in the coating solution for 6 to 8 seconds.

[0027] The invention will now be described in more detail with examples. These embodiments will make it easier to understand the advantages of the invention and put it into practice. However, it should be understood that the following embodiments do not limit the scope of the invention in any way.

[0028] Example

[0029] Preparation of coating solution

[0030] Table 1 shows the chemical composition of the coating solution used to prepare the coating solution for the antiperspirant gloves of the present invention.

[0031] Table 1 Chemical composition used to prepare the coating solution

[0032]

[0033]

[0034] Glove production process

[0035] The gloves of this invention are manufactured using methods known in the glove manufacturing industry, but differ in that this invention includes the following key steps (such as...). Figure 1 (As shown): Antiperspirant additives and moisture-wicking polymer additives are added to a mixture of silicone emulsion and water to prepare a coating solution, which is then applied to the inner layer of a latex film to produce a glove with antiperspirant properties. A detailed description of the method is as follows.

[0036] Step 1: Treat the hand mold with an acidic solution, then with an alkaline solution, rinse with water, scrub, and rinse again with water to obtain a clean hand mold.

[0037] Step 2: Then immerse the cleaned hand mold in a conventional coagulant solution at a temperature of 55°C to 60°C for 5 to 10 seconds to coat the hand mold with a coagulant layer.

[0038] Step 3: Dry the coagulant layer coated on the hand mold at a temperature of 100°C to 180°C for 3 to 8 seconds to obtain a dried coagulant layer.

[0039] Step 4: Immerse the dried coagulant layer coated on the hand mold in a latex impregnation bath at a temperature of 36°C to 42°C for 5 to 15 seconds to coat the hand mold with a latex layer.

[0040] Step 5: Dry the latex layer coated on the hand mold at a temperature range of 100°C to 150°C for 30 seconds to 5 minutes to obtain a dried latex film.

[0041] Step 6: Immerse the dried latex film coated on the hand mold in hot water at a temperature between 60°C and 75°C for 20 to 50 seconds to leach out excess chemical residues, such as crosslinking agents in natural latex and acrylonitrile butadiene rubber latex and inorganic substances in some surfactants, while also leaching out proteins in the natural latex, thereby obtaining a pre-impregnated latex film.

[0042] Step 7: Using a traditional dotting blanket or brush on the production line, the pre-extracted latex film coated on the hand mold is dotted to obtain a dotted latex film.

[0043] Step 8: Cure the dotted latex film coated on the hand mold at a temperature of 110°C to 130°C for 40 to 55 minutes to form a cured latex film.

[0044] Step 9: Place the cured latex film coated on the hand mold into a chlorinator containing chlorine water to obtain a chlorinated latex film.

[0045] Step 10: Immerse the chlorinated latex film coated on the hand mold in hot water at 60°C to 65°C for 5 to 15 seconds to leach out the remaining chemical residues, such as the crosslinking agents of natural latex and acrylonitrile butadiene rubber latex and inorganic substances in some surfactants, while leaching out the proteins in the natural latex, to obtain the leachated latex film.

[0046] Step 11: Immerse the post-extraction latex film coated on the hand mold into a silicone bath containing the chemical composition shown in Table 1 for 5 to 10 seconds.

[0047] Step 12: Dry the latex film coated on the hand mold at a temperature range of 95°C to 120°C for 3 to 8 minutes to obtain gloves with antiperspirant properties.

[0048] Step 13: Peel the glove off the hand mold.

[0049] The properties of the coating solution, the properties of gloves coated with the coating solution, and skin analysis tests were studied, and the results are as follows.

[0050] result

[0051] The zeta potential and surface tension of the coating solution of the present invention were studied and compared with a conventional coating solution containing only silicone emulsion and water as a control. Table 2 summarizes the zeta potential and surface tension of the conventional coating solution and the coating solution of the present invention containing silicone emulsion, antiperspirant additive, hygroscopic polymer additive, anti-stick agent and water.

[0052] Table 2. Zeta potential and surface tension of conventional coating solutions (control) and coating solutions of the present invention.

[0053] Group Zeta potential (mV) Surface tension (N / m) Traditional coating solution (control) -25.7 32.6 Coating solution of the present invention -31.7 33.0

[0054] The results in Table 2 show that the coating solution of the present invention has a higher zeta potential and surface tension compared to conventional coating solutions. These results also indicate that the coating solution of the present invention has better stability and slightly lower wettability.

[0055] In addition, energy-dispersive X-ray (EDX) analysis was performed to identify the elemental composition of the materials on gloves coated with conventional coating solutions and gloves coated with the coating solution of the present invention. The quantitative elemental spectra obtained by EDX analysis are summarized in Table 3 below.

[0056] Table 3. Quantitative elemental spectra of gloves coated with conventional coating solution (control) and gloves coated with the coating solution of the present invention.

[0057]

[0058] Table 3 shows that the aluminum content of the NBR and NR gloves coated with the solution of this invention is 9.80% and 9.84%, respectively. These results indicate that the antiperspirant additive in the inner layer of the gloves, namely the hydroxyaluminate chloride-based metal salt, provides antiperspirant properties. Other elements include sodium, silicon, magnesium, and zinc.

[0059] In addition, NBR and NR gloves coated with conventional coating solutions and the coating solution of the present invention were tested to evaluate their mechanical properties. Tables 4 and 5 summarize the comparison of the mechanical properties of the above gloves.

[0060] Table 4 Mechanical properties of NBR gloves coated with conventional coating solution (control) and the coating solution of the present invention.

[0061]

[0062] Note: BA: Before aging; AA: After aging; Aging conditions: 70℃, 7 days.

[0063] Table 5 Mechanical properties of NR gloves coated with conventional coating solution (control) and the coating solution of the present invention.

[0064]

[0065] Note: BA: Before aging; AA: After aging; Aging conditions: 70℃, 7 days.

[0066] According to the results in Tables 4 and 5, the NBR gloves and NR gloves coated with the solution of this invention have comparable mechanical properties and meet the requirements of ASTM D6319 and ASTM D3578 standards, respectively. These results indicate that incorporating appropriate amounts of antiperspirant additives, moisture-wicking polymer additives, and anti-sticking agents into a mixture of silicone emulsion and water does not affect the mechanical properties of the gloves.

[0067] On the other hand, 40 gloved samples from both hands underwent a 2-hour skin analysis test to assess reductions in skin hydration, water loss, and erythema. The results of the skin analysis are summarized in Table 6.

[0068] Table 6 Skin analysis of gloves coated with conventional coating solution (control) and the coating solution of the present invention.

[0069]

[0070]

[0071] Remark:

[0072] Skin hydration: Skin moisture or the water content within the skin.

[0073] Water loss: The amount of water released from the skin.

[0074] Skin erythema: The lower the value, the milder the skin irritation.

[0075] Based on skin analysis results, the absorbency and antiperspirant properties of hands were improved after wearing NBR and NR gloves coated with the solution of this invention. This is evident from the smaller differences in skin hydration and dehydration tests compared to gloves coated with conventional solutions. The smaller differences in skin hydration and dehydration of the present invention indicate that the gloves have better antiperspirant and absorbent properties. Regarding skin irritation, the erythema values ​​of NBR and NR gloves coated with the solution of this invention were reduced. The purpose of this invention is to ensure that gloves coated with the solution of this invention exhibit less skin irritation, and this ability has been confirmed in the erythema test.

[0076] The results above demonstrate that adding antiperspirant and moisture-wicking polymer additives to a mixture of silicone emulsion and water effectively blocks sweat and absorbs moisture. Furthermore, this indicates improved antiperspirant performance and reduced skin irritation in NBR and NR gloves. Compared to gloves without the coating solution of this invention, these effects allow wearers to maintain a naturally dry and comfortable wearing experience for extended periods.

[0077] Various modifications to these embodiments will be apparent to those skilled in the art based on the specification and drawings. The principles associated with the various embodiments described herein can be applied to other embodiments. Therefore, the description of the invention is not limited to the embodiments shown in the drawings, but rather provides the broadest scope consistent with the principles, novelty, and inventiveness disclosed or presented herein. Thus, any substitutions, modifications, and variations made to the invention should be included within the scope of the appended claims.

Claims

1. A formulation for coating an elastomeric article and imparting antiperspirant properties thereto, characterized in that, The formulation is a mixture of silicone emulsion and water, wherein the mixture further comprises an antiperspirant additive with a mass concentration of 5.00% to 25.00% selected from hydrated aluminum hydroxyl chloride metal salt, tetrachloroalumina zirconium, or combinations thereof, and a hygroscopic polymer additive with a mass concentration of 0.01% to 1.00% selected from polyethylene glycol, amylose, bentonite, or any combination thereof.

2. The formulation of claim 1, wherein, The silicone emulsion is selected from polydimethylsiloxane, polymethylhydrosiloxane or a combination thereof, and has a mass concentration of 0.05% to 0.50%.

3. The formulation of claim 1, wherein The formulation further includes an anti-sticking agent at a mass concentration of 0.05% to 1.00%, wherein the anti-sticking agent is selected from potassium stearate, calcium stearate, or a combination thereof.

4. An elastomer article coated with the formulation according to any one of claims 1 to 3, characterized in that, The elastomeric product is a glove with antiperspirant properties.

5. A method for producing an elastomer product with antiperspirant properties, characterized in that, Includes the following steps: A coating solution is prepared by adding an antiperspirant additive with a mass concentration of 5.00% to 25.00% selected from hydrated aluminum hydroxyl chloride, tetrachloroalumina zirconium, or combinations thereof, and a hygroscopic polymer additive with a mass concentration of 0.01% to 1.00% selected from polyethylene glycol, amylose, bentonite, or any combination thereof, to a mixture of an organosilicon emulsion and water; and The coating solution is applied to the inner layer of a latex film to produce the elastomeric product with antiperspirant properties.

6. The method as described in claim 5, characterized in that, Also includes: Add an anti-sticking agent to the coating solution.

7. The method as described in claim 5, characterized in that, In the manufacturing process of the elastomer article, the coating solution is applied after chlorination treatment.

8. The method as described in claim 5, characterized in that, The coating solution is applied by immersing the latex film in the coating solution for 5 to 10 seconds.

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