A stable yoga column and a production process thereof

Abstract

The application relates to the field of yoga equipment, and particularly discloses a stable yoga column and a production process thereof. The stable yoga column comprises the following raw materials in parts by weight: 70-80 parts of polyethylene, 5-10 parts of a foaming agent, 3-8 parts of anti-slip particles and 4-5 parts of other additives. In addition, the preparation method has the advantages of improving the stability of the yoga column.

Description

Technical Field

[0001] This application relates to the field of yoga equipment, and more specifically, to a stable yoga column and its manufacturing process. Background Technology

[0002] A yoga roller, also known as a yoga fascia roller or myofascial release roller, is a commonly used tool for exercise recovery and self-massage. Yoga rollers come in various sizes and firmnesses, allowing you to choose the right style to suit your needs. Using a yoga roller can effectively relieve muscle tension and adhesions, promote blood circulation, accelerate muscle recovery, and improve flexibility. Rolling and massaging with a yoga roller after exercise can help relieve muscle fatigue and stiffness and prevent sports injuries.

[0003] Yoga pillars can be used in various ways, rolling over different body parts such as the calves, thighs, and back. They can be used on the ground or in comfortable positions, such as sitting, lying down, or standing. Therefore, yoga pillars need to be highly stable. Existing yoga pillars suffer from poor stability and slipperiness, which not only affects the user experience but may also cause accidental injuries. Therefore, improving the stability and anti-slip properties of yoga pillars has become an urgent technical problem to be solved. Summary of the Invention

[0004] To improve the stability of yoga pillars, this application provides a stable yoga pillar and its manufacturing process.

[0005] Firstly, this application provides a stable yoga column, employing the following technical solution: A stable yoga column comprises the following raw materials in parts by weight: 70-80 parts polyethylene, 5-10 parts foaming agent, 3-8 parts anti-slip microparticles, and 4-5 parts other additives.

[0006] By adopting the above technical solution, the yoga column made of polyethylene foam has good support performance and resistance to compression and tearing. The yoga column can be used for a long time and has a good ability to maintain its shape. The addition of anti-slip microparticles can increase the friction coefficient of the yoga column surface, thereby increasing the static friction coefficient between the yoga column and the human body, the ground, the wall, etc., and improving the stability of the yoga column during use. The yoga column is not easy to slip during use, thus giving the yoga column good stability. Other additives combined with polyethylene can further increase the static friction coefficient of the yoga column, thereby improving the anti-slip performance and stability of the yoga column during use.

[0007] Preferably, the anti-slip microparticles are modified chitosan / sodium alginate composite microspheres.

[0008] By adopting the above technical solution, the surface of the modified chitosan / sodium alginate composite microspheres is relatively rough. The composite microspheres are combined with polyethylene, and the foamed yoga column has a relatively rough surface, which increases the coefficient of friction, thereby improving the stability and anti-slip performance of the yoga column. At the same time, chitosan and sodium alginate have antibacterial effects. The addition of composite microspheres can simultaneously improve the antibacterial performance of the yoga column and reduce the bacteria generated during the use of the yoga column.

[0009] Preferably, the preparation method of the modified chitosan / sodium alginate composite microspheres includes the following steps: dissolving tannic acid in water to form a solution, adding chitosan / sodium alginate composite microspheres, reacting for 6-6.5 hours, filtering, washing to obtain microsphere powder, placing the microsphere powder in epichlorohydrin, adjusting the pH to 9.7-10.3, reacting at room temperature for 1-1.2 hours, heating in a water bath at 50-55°C for 4 hours, filtering, washing, soaking in hydrochloric acid for 11-12 hours, neutralizing, washing, and obtaining modified chitosan / sodium alginate composite microspheres.

[0010] By adopting the above technical solution and using tannic acid as a crosslinking agent, the tannic acid is crosslinked and cured on the surface of the modified chitosan / sodium alginate composite microspheres. This reduces the swelling performance of the microspheres and increases the surface roughness of the composite microspheres, which can effectively improve the friction coefficient of the yoga column surface, thereby enhancing the anti-slip performance and stability of the yoga column. At the same time, it is beneficial to improve the bonding degree between the composite microspheres and polyethylene.

[0011] Preferably, the mass ratio of tannic acid to chitosan / sodium alginate composite microspheres is (0.25-0.29):(1.68-1.81).

[0012] By adopting the above technical solution and controlling the mass ratio of tannic acid to chitosan / sodium alginate composite microspheres, the cross-linking and curing effect of tannic acid and chitosan / sodium alginate composite microspheres is optimized, resulting in modified chitosan / sodium alginate composite microspheres with better morphology and superior anti-slip performance improvement of yoga columns.

[0013] Preferably, the preparation method of the chitosan / sodium alginate composite microspheres is as follows: after mixing sodium alginate solution with paraffin oil and turpentine, glacial acetic acid is added and the mixture is allowed to stand for 1 hour, then acetic acid solution of chitosan and liquid paraffin are added and the mixture is stirred for 1-1.2 hours. After washing and drying, chitosan / sodium alginate composite microspheres are obtained.

[0014] By adopting the above technical solution, the surface of the chitosan / sodium alginate composite microspheres is relatively rough, with more wrinkles and micropores, and it has good mechanical strength and can be combined with polyethylene.

[0015] Preferably, the acetic acid solution of chitosan also contains nano-silica, and the amount of nano-silica added is 8-10 wt% of chitosan.

[0016] By adopting the above technical solution, nano-silica can enhance the strength of chitosan / sodium alginate composite microspheres, while increasing the surface roughness of the composite microspheres. By controlling the amount of nano-silica added, the nano-silica can be evenly distributed in the chitosan / sodium alginate composite microspheres, thereby enhancing the roughness and mechanical properties of the composite microspheres.

[0017] Preferably, the other additive is nano-calcium carbonate.

[0018] By adopting the above technical solution, the nano-calcium carbonate has a small particle size, which can be uniformly dispersed in polyethylene and well combined with polyethylene. At the same time, the nano-calcium carbonate can improve the strength of polyethylene and improve the dispersibility of other raw materials in polyethylene, thereby improving the anti-slip performance and stability of yoga columns.

[0019] Secondly, this application provides a method for preparing a stable yoga column, which adopts the following technical solution: A manufacturing process for a stable yoga column includes the following steps: After mixing high-density polyethylene substrate, foaming agent, anti-slip microparticles and other additives, the mixture is heated to 150-180℃ and extruded to obtain granules. The granules are then injected into a mold with anti-slip texture through injection foaming. The injection pressure is 900-1000 kg / m², the temperature inside the mold is 155-165℃, the pressure is 200-210 kg / m², and the pressure is held for 5-8 minutes before the mold is opened to obtain a yoga column.

[0020] By adopting the above technical solution, the raw materials are blended by extrusion molding, resulting in better mixing effect, and the injection foaming method is simple and convenient to operate.

[0021] In summary, this application has the following beneficial effects: 1. Since this application uses modified chitosan / sodium alginate composite microspheres as anti-slip particles, the surface of the modified chitosan / sodium alginate composite microspheres is relatively rough. The composite microspheres are combined with polyethylene, and the foamed yoga column has a relatively rough surface, which increases the coefficient of friction, thereby improving the stability and anti-slip performance of the yoga column. At the same time, chitosan and sodium alginate have antibacterial effects. The addition of composite microspheres can simultaneously improve the antibacterial performance of the yoga column and reduce the bacteria generated during the use of the yoga column.

[0022] 2. In this application, nano-silica is added to the acetic acid solution of chitosan. Nano-silica can enhance the strength of chitosan / sodium alginate composite microspheres and increase the surface roughness of the composite microspheres. By controlling the amount of nano-silica added, the nano-silica can be evenly distributed in the chitosan / sodium alginate composite microspheres, thereby enhancing the roughness and mechanical properties of the composite microspheres.

[0023] 3. Nano calcium carbonate is selected as another additive in this application. Nano calcium carbonate has a small particle size, which can be uniformly dispersed in polyethylene and well combined with polyethylene. At the same time, nano calcium carbonate can improve the strength of polyethylene and improve the dispersibility of other raw materials in polyethylene, thereby improving the anti-slip performance and stability of yoga column. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the embodiments. Preparation Examples of Chitosan / Sodium Alginate Composite Microspheres 1-6

[0025] Preparation Example 1 30 mL of 4 wt% sodium alginate solution was mixed with 60 mL of paraffin oil, 60 mL of turpentine oil and 2 mL of Span80. Then, 1 mL of 10 wt% glacial acetic acid was added and the mixture was allowed to stand for 1 h. Then, 30 mL of 4 wt% chitosan acetic acid solution, 100 mL of liquid paraffin and 2 mL of Span80 were added and the mixture was stirred for 1.2 h. After washing and drying, chitosan / sodium alginate composite microspheres were obtained.

[0026] Preparation Example 2 35 mL of 3 wt% sodium alginate solution was mixed with 55 mL of paraffin oil, 55 mL of turpentine oil and 2 mL of Span 80. 2 mL of 10 wt% glacial acetic acid was added and the mixture was allowed to stand for 1 hour. Then, 35 mL of 3 wt% chitosan acetic acid solution, 100 mL of liquid paraffin and 2 mL of Span 80 were added and the mixture was stirred for another 1 hour. After washing and drying, chitosan / sodium alginate composite microspheres were obtained.

[0027] Preparation Example 3 The difference between Preparation Example 3 and Preparation Example 1 is that in Preparation Example 3, nano-silica was added to the acetic acid solution of chitosan, and the amount of nano-silica added was 8 wt% of chitosan.

[0028] Preparation Example 4 The difference between Preparation Example 4 and Preparation Example 1 is that in Preparation Example 4, nano-silica was added to the acetic acid solution of chitosan, and the amount of nano-silica added was 10 wt% of chitosan.

[0029] Preparation Example 5 The difference between Preparation Example 5 and Preparation Example 3 is that in Preparation Example 5, the amount of nano-silica added is 5 wt% of chitosan.

[0030] Preparation Example 6 The difference between Preparation Example 6 and Preparation Example 3 is that in Preparation Example 6, the amount of nano-silica added is 15 wt% of chitosan. Preparation of modified chitosan / sodium alginate composite microspheres Example 7-14

[0031] Preparation Example 7 The preparation method of modified chitosan / sodium alginate composite microspheres includes the following steps: 5g of tannic acid is dissolved in 150mL of water to form a solution, and then chitosan / sodium alginate composite microspheres are added. The mass ratio of tannic acid to chitosan / sodium alginate composite microspheres is 0.25:1.68. After reacting for 6h, the mixture is filtered, washed, and microsphere powder is obtained. The microsphere powder is placed in 350mL of epichlorohydrin with a concentration of 0.065mol / L, the pH is adjusted to 9.7, and the mixture is reacted at room temperature for 1.2h. After heating in a 50℃ water bath for 4h, the mixture is filtered, washed, soaked in hydrochloric acid for 11h, neutralized, and washed to obtain modified chitosan / sodium alginate composite microspheres. In this preparation example, the chitosan / sodium alginate composite microspheres obtained in Preparation Example 1 are selected.

[0032] Preparation Example 8 The preparation method of modified chitosan / sodium alginate composite microspheres includes the following steps: 5g of tannic acid is dissolved in 150mL of water to form a solution, and then chitosan / sodium alginate composite microspheres are added. The mass ratio of tannic acid to chitosan / sodium alginate composite microspheres is 0.29:1.81. After reacting for 6.5h, the mixture is filtered, washed, and microsphere powder is obtained. The microsphere powder is placed in 350mL of epichlorohydrin with a concentration of 0.065mol / L, the pH is adjusted to 10.3, and the mixture is reacted at room temperature for 1h. After heating in a water bath at 55℃ for 4h, the mixture is filtered, washed, soaked in hydrochloric acid for 12h, neutralized, and washed to obtain modified chitosan / sodium alginate composite microspheres. In this preparation example, the chitosan / sodium alginate composite microspheres obtained in Preparation Example 2 are selected.

[0033] Preparation Example 9 The difference between Preparation Example 9 and Preparation Example 7 is that the chitosan / sodium alginate composite microspheres used in Preparation Example 9 are the chitosan / sodium alginate composite microspheres obtained in Preparation Example 3.

[0034] Preparation Example 10 The difference between Preparation Example 10 and Preparation Example 7 is that the chitosan / sodium alginate composite microspheres used in Preparation Example 10 are the chitosan / sodium alginate composite microspheres obtained in Preparation Example 4.

[0035] Preparation Example 11 The difference between Preparation Example 11 and Preparation Example 7 is that the chitosan / sodium alginate composite microspheres used in Preparation Example 11 are the chitosan / sodium alginate composite microspheres obtained in Preparation Example 5.

[0036] Preparation Example 12 The difference between Preparation Example 12 and Preparation Example 7 is that the chitosan / sodium alginate composite microspheres used in Preparation Example 12 are the same chitosan / sodium alginate composite microspheres obtained in Preparation Example 6.

[0037] Preparation Example 13 The difference between Preparation Example 13 and Preparation Example 7 is that the mass ratio of tannic acid to chitosan / sodium alginate composite microspheres is 0.1:1.68.

[0038] Preparation Example 14 The difference between Preparation Example 14 and Preparation Example 7 is that the mass ratio of tannic acid to chitosan / sodium alginate composite microspheres is 0.4:1.68. Example

[0039] Example 1 A stable yoga column, characterized by comprising the following raw materials in parts by weight: 70 kg of polyethylene, 5 kg of foaming agent, 3 kg of anti-slip microparticles, and 4 kg of other additives. The foaming agent is azodicarbonamide, purchased from Hubei Xinyuhong Biomedical Technology Co., Ltd. The anti-slip microparticles are modified chitosan / sodium alginate composite microspheres. In this embodiment, the modified chitosan / sodium alginate composite microspheres are those prepared in Preparation Example 7. The other additives are nano-calcium carbonate, purchased from Qingyuan Gaofeng Powder Co., Ltd.

[0040] The production process of the yoga column mentioned above includes the following steps: After mixing high-density polyethylene substrate, foaming agent, anti-slip microparticles and other additives, heating to 150°C, extruding to form granules, injecting the granules into a mold with anti-slip texture through injection foaming, with an injection pressure of 900 kg / m², a mold temperature of 155°C, a pressure of 200 kg / m², holding pressure for 8 minutes, and then opening the mold to obtain the yoga column.

[0041] Example 2

[0042] A stable yoga column, characterized by comprising the following raw materials in parts by weight: 80 kg of polyethylene, 10 kg of foaming agent, 8 kg of anti-slip microparticles, and 5 kg of other additives. The foaming agent is azodicarbonamide, purchased from Hubei Xinyuhong Biomedical Technology Co., Ltd. The anti-slip microparticles are modified chitosan / sodium alginate composite microspheres. In this embodiment, the modified chitosan / sodium alginate composite microspheres are those prepared in Preparation Example 8. The other additives are nano-calcium carbonate, purchased from Qingyuan Gaofeng Powder Co., Ltd.

[0043] The production process of the yoga column includes the following steps: after mixing high-density polyethylene substrate, foaming agent, anti-slip microparticles and other additives, heating to 180°C, extruding to form granules, injecting the granules into a mold with anti-slip texture through injection foaming, with an injection pressure of 1000 kg / m², a mold temperature of 165°C, a pressure of 210 kg / m², holding pressure for 8 minutes, and then opening the mold to obtain the yoga column.

[0044] Example 3

[0045] The difference between Example 3 and Example 1 is that in Example 3, the modified chitosan / sodium alginate composite microspheres are the same as those prepared in Preparation Example 9.

[0046] Example 4

[0047] The difference between Example 4 and Example 1 is that in Example 4, the modified chitosan / sodium alginate composite microspheres are the modified chitosan / sodium alginate composite microspheres prepared in Preparation Example 10.

[0048] Example 5

[0049] The difference between Example 5 and Example 1 is that in Example 5, the modified chitosan / sodium alginate composite microspheres are the same as those prepared in Preparation Example 11.

[0050] Example 6

[0051] The difference between Example 6 and Example 1 is that in Example 6, the modified chitosan / sodium alginate composite microspheres are the modified chitosan / sodium alginate composite microspheres prepared in Preparation Example 12.

[0052] Example 7

[0053] The difference between Example 7 and Example 1 is that in Example 7, the modified chitosan / sodium alginate composite microspheres are the modified chitosan / sodium alginate composite microspheres prepared in Preparation Example 13.

[0054] Example 8

[0055] The difference between Example 8 and Example 1 is that in Example 8, the modified chitosan / sodium alginate composite microspheres are the modified chitosan / sodium alginate composite microspheres prepared in Preparation Example 14. Comparative Example

[0056] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that no anti-slip microparticles were added in Comparative Example 1.

[0057] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that no nano-calcium carbonate was added in Comparative Example 2. Performance testing

[0058] Yoga columns were prepared according to the raw materials and production processes of Examples 1-8 and Comparative Examples 1-2, and the anti-slip performance of the yoga columns was tested. The anti-slip performance was tested in accordance with the "ASTM-F609 Test Method for Static Anti-slip Friction Performance of Footwear Soles", and the results are recorded in Table 1.

[0059] Table 1. Stability and anti-slip properties of yoga pillars Example 1 32.16 Example 2 31.98 Example 3 28.64 Example 4 28.59 Example 5 28.13 Example 6 29.01 Example 7 27.98 Example 8 28.03 Comparative Example 1 24.26 Comparative Example 2 23.19 According to Table 1, Examples 1-2 and Comparative Examples 1-2, it can be seen that Examples 1-2 have better anti-slip performance. Examples 1-2 added anti-slip microparticles and nano-calcium carbonate, indicating that the anti-slip microparticles and nano-calcium carbonate can increase the friction coefficient of the yoga column, thereby improving the stability and anti-slip performance of the yoga column. The anti-slip microparticles are modified chitosan / sodium alginate composite microspheres. The surface of the composite microspheres is relatively rough. The composite microspheres are combined with polyethylene, and the surface friction coefficient of the foamed yoga column is high, thereby improving the stability and anti-slip performance of the yoga column.

[0060] Nano-calcium carbonate has a small particle size, which allows it to be uniformly dispersed in polyethylene and tightly bonded to polyethylene. At the same time, nano-calcium carbonate can improve the strength of polyethylene and improve the dispersibility of other raw materials in polyethylene, thereby improving the anti-slip performance and stability of yoga columns.

[0061] Compared with Example 1, the anti-slip performance of Examples 3-4 is inferior to that of Example 1. In the preparation of the modified chitosan / sodium alginate composite microspheres in Examples 3-4, nano-silica was added to the acetic acid solution of chitosan. Nano-silica has good mechanical strength and can enhance the mechanical properties of the modified chitosan / sodium alginate composite microspheres. At the same time, the addition of nano-silica can effectively improve the surface roughness of the composite microspheres, thereby increasing the surface friction coefficient of the yoga column and enhancing the anti-slip performance of the yoga column.

[0062] Compared with Example 1, the anti-slip performance of Examples 5-6 is inferior to that of Example 1. In the preparation of the modified chitosan / sodium alginate composite microspheres in Examples 5-6, the amount of nano silica added was adjusted, indicating that the amount of nano silica added has an impact on the roughness of the composite microspheres. Too much or too little nano silica can easily affect the morphology and surface roughness of the composite microspheres, and thus affect the friction coefficient of the yoga column.

[0063] Compared with Example 1, the anti-slip performance of Examples 7-8 is inferior to that of Example 1. In the preparation of the modified chitosan / sodium alginate composite microspheres in Examples 7-8, the mass ratio of tannic acid to chitosan / sodium alginate composite microspheres was adjusted, indicating that the mass ratio of tannic acid to composite microspheres affects the cross-linking and curing effect of tannic acid and composite microspheres, resulting in poor morphology of the formed modified chitosan / sodium alginate composite microspheres, which affects the improvement of the anti-slip performance of yoga columns by composite microspheres.

[0064] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A stable yoga column, characterized in that: The raw materials include the following parts by weight: 70-80 parts polyethylene, 5-10 parts foaming agent, 3-8 parts anti-slip microparticles, and 4-5 parts other additives.

2. The stable yoga column according to claim 1, characterized in that: The anti-slip microparticles are modified chitosan / sodium alginate composite microspheres.

3. A stable yoga column according to claim 1, characterized in that: The preparation method of the modified chitosan / sodium alginate composite microspheres includes the following steps: dissolving tannic acid in water to form a solution, adding chitosan / sodium alginate composite microspheres, reacting for 6-6.5 hours, filtering, washing to obtain microsphere powder, placing the microsphere powder in epichlorohydrin, adjusting the pH to 9.7-10.3, reacting at room temperature for 1-1.2 hours, heating in a water bath at 50-55°C for 4 hours, filtering, washing, soaking in hydrochloric acid for 11-12 hours, neutralizing, washing, and obtaining modified chitosan / sodium alginate composite microspheres.

4. A stable yoga column according to claim 3, characterized in that: The mass ratio of tannic acid to chitosan / sodium alginate composite microspheres is (0.25-0.29):(1.68-1.81).

5. A stable yoga column according to claim 3, characterized in that: The preparation method of the chitosan / sodium alginate composite microspheres is as follows: sodium alginate solution is mixed with paraffin oil and turpentine oil, glacial acetic acid is added and the mixture is allowed to stand for 1 hour, then acetic acid solution of chitosan and liquid paraffin are added and the mixture is stirred for 1-1.2 hours. After washing and drying, chitosan / sodium alginate composite microspheres are obtained.

6. A stable yoga column according to claim 5, characterized in that: The acetic acid solution of chitosan also contains nano-silica, with the amount of nano-silica added being 8-10 wt% of the chitosan.

7. A stable yoga column according to claim 1, characterized in that: The other additives are nano-calcium carbonate.

8. The manufacturing process of a stable yoga column according to any one of claims 1-7, characterized in that: Includes the following steps: After mixing high-density polyethylene substrate, foaming agent, anti-slip microparticles and other additives, the mixture is heated to 150-180℃ and extruded to obtain granules. The granules are then injected into a mold with anti-slip texture through injection foaming. The injection pressure is 900-1000 kg / m², the temperature inside the mold is 155-165℃, the pressure is 200-210 kg / m², and the pressure is held for 5-8 minutes before the mold is opened to obtain a yoga column.