Palm fiber mat and process for making the same

Abstract

The application discloses a palm fiber mat and a preparation process thereof, and relates to the field of fiber mats. The palm fiber mat is obtained by bonding palm fibers through hot-melt antibacterial chemical fibers after the palm fibers and the antibacterial chemical fibers are interwoven. The antibacterial chemical fibers are prepared according to a weight ratio of (45-55):(10-15):(12-16):(1-2) of low-density polyethylene powder, ethylene-vinyl alcohol copolymer, modified antibacterial plant fiber and heat stabilizer. The melting index of the low-density polyethylene powder is 50-70 g / 10min, and the melting index of the ethylene-vinyl alcohol copolymer is 4-6 g / 10min. The modified antibacterial plant fiber comprises, from inside to outside, antibacterial plant fiber, a chitosan connecting layer and an ethylene-vinyl acetate copolymer wrapping layer. The palm fiber mat can help users fall asleep, improve the sleep quality of the users, and inhibit the growth of bacteria in the palm fiber mat, so that the cleanliness and hygiene of the palm fiber mat are maintained.

Description

Technical Field

[0001] This invention relates to the field of fiber mats, and in particular to a palm fiber mat and its preparation process. Background Technology

[0002] Palm fiber mats are made by weaving a mixture of palm fibers. One method of preparation involves mixing palm fibers with chemical fibers, heating them, and then melting the chemical fibers to create adhesive properties, which in turn binds the palm fibers together to form a palm fiber mat.

[0003] Lavender fiber is obtained by processing and weaving the stems, leaves, and flowers of the lavender plant. Lavender fiber contains volatile compounds such as lavender ketone and citronellol. These substances stimulate the brain through the sense of smell, promoting relaxation of both body and mind and improving sleep quality. Furthermore, lavender ketone in lavender fiber has antibacterial properties. Palm fiber mats, made by blending lavender-infused chemical fibers with palm fiber, not only help users fall asleep and improve sleep quality but also inhibit bacterial growth within the mat, maintaining its cleanliness and hygiene.

[0004] However, when using lavender fiber for antibacterial purposes, the amount of lavender fiber incorporated is usually relatively large, which makes the palm fiber mattress easily emit a strong fragrance. When the fragrance is too strong, it is not conducive to promoting sleep for the user. Summary of the Invention

[0005] This application provides a palm fiber mat and its preparation process, aiming to obtain a palm fiber mat that can promote sleep and has good antibacterial properties.

[0006] The palm fiber mat provided in this application adopts the following technical solution: A palm fiber mat is made by intertwining palm fibers with antibacterial chemical fibers and then bonding the palm fibers with hot-melt antibacterial chemical fibers. The antibacterial chemical fiber is prepared from low-density polyethylene powder, ethylene-vinyl alcohol copolymer, modified antibacterial plant fiber and heat stabilizer in a weight ratio of (45-55):(10-15):(12-16):(1-2); the melt index of the low-density polyethylene powder is 50-70 g / 10 min, and the melt index of the ethylene-vinyl alcohol copolymer is 4-6 g / 10 min. The modified antibacterial plant fiber comprises, from the inside out, antibacterial plant fiber, a chitosan connecting layer, and an ethylene-vinyl acetate copolymer coating layer.

[0007] In this application, modified antibacterial plant fiber serves as the antibacterial component of the antibacterial chemical fiber. The modified antibacterial plant fiber comprises, from the inside out, antibacterial plant fiber, a chitosan linking layer, and an ethylene-vinyl acetate copolymer coating layer. The antibacterial plant fiber is a natural antibacterial substance, and using this natural antibacterial substance to treat the palm fiber mat will not harm human health. The chitosan linking layer is mainly composed of chitosan, which also has antibacterial properties, enhancing the antibacterial properties of the palm fiber mat. Simultaneously, the chitosan linking layer, positioned between the antibacterial plant fiber and the ethylene-vinyl acetate copolymer coating layer, improves the stability of the ethylene-vinyl acetate copolymer coating layer. The ethylene-vinyl acetate copolymer exhibits good dispersion in low-density polyethylene powder, allowing the modified antibacterial plant fiber to be uniformly dispersed within the antibacterial chemical fiber, thus improving the uniform antibacterial performance of the palm fiber mat.

[0008] Furthermore, since the modified antibacterial plant fibers used in this application typically employ antibacterial fibers containing special aromas, such as lavender fiber, the amount of modified antibacterial plant fibers incorporated is usually relatively large to improve antibacterial performance. This can easily lead to the release of a strong fragrance, which is detrimental to the user experience and can affect sleep. To address this issue, this application uses low-density polyethylene powder and ethylene-vinyl alcohol copolymer as the matrix material for the antibacterial chemical fiber. By incorporating ethylene-vinyl alcohol copolymer with high barrier properties, the escape rate of aroma molecules in the modified antibacterial plant fiber is adjusted, allowing the aroma molecules to slowly and continuously evaporate. This helps improve the user experience, promotes sleep, and enhances sleep quality.

[0009] Optionally, the preparation method of the modified antibacterial plant fiber includes the following steps: Chitosan was dissolved in lactic acid solution to prepare a chitosan solution with a viscosity of 0.5-1.0 Pa·s; Antibacterial plant fibers are added to the chitosan solution and stirred for 2-8 hours. The antibacterial plant fibers are then separated and dried to obtain pre-modified antibacterial plant fibers with the chitosan linker layer formed on the surface. The weight ratio of the chitosan solution to the antibacterial plant fibers is 1000:(15-20). Ethylene-vinyl acetate copolymer is dissolved in an organic solvent to obtain an ethylene-vinyl acetate dispersion; wherein the melt index of the ethylene-vinyl acetate copolymer is 40-55 g / 10 min, the content of vinyl acetate is 30-40%, and the weight ratio of the ethylene-vinyl acetate copolymer to the organic solvent is (4-8):100. The pre-modified antibacterial plant fiber was added to an ethylene-vinyl acetate dispersion and stirred for 2-4 hours. Then the pre-modified antibacterial plant fiber was separated, and the organic solvent on the pre-modified antibacterial plant fiber was removed by heating to obtain modified antibacterial plant fiber with an ethylene-vinyl acetate copolymer coating on the outer surface.

[0010] In this application, the viscosity of the chitosan solution is controlled at 0.5-1.0 Pa·s, which facilitates the stable connection between the chitosan linker layer and the antibacterial plant fiber, while also facilitating the separation of the antibacterial plant fiber from the chitosan solution, thus obtaining pre-modified antibacterial plant fibers of uniform size. An ethylene-vinyl acetate copolymer coating layer is then applied to the outer periphery of the pre-modified antibacterial plant fiber. When the melt index of the ethylene-vinyl acetate copolymer is controlled at 40-55 g / 10 min and the vinyl acetate content is 30-40%, it ensures stable adhesion between the ethylene-vinyl acetate copolymer coating layer and the chitosan linker layer, while also improving the elasticity of the modified antibacterial plant fiber, thereby enhancing the durability of the palm fiber mat.

[0011] Optionally, the antibacterial plant fiber has a length of 5-10 mm.

[0012] In this application, the length of the antibacterial plant fiber is controlled at 5-10 mm, which is beneficial to improving the dispersibility of the modified antibacterial plant fiber.

[0013] Optionally, the antibacterial plant fiber is lavender fiber.

[0014] Lavender fiber contains volatile compounds such as lavender ketone and citronellol. These substances stimulate the brain through the sense of smell, promoting relaxation of both body and mind, thus aiding sleep and improving sleep quality. Furthermore, lavender ketone in lavender fiber has antibacterial properties. Palm fiber mats, made by blending lavender-infused chemical fibers with palm fiber, not only help users fall asleep and improve sleep quality but also inhibit bacterial growth within the mat, maintaining its cleanliness and hygiene.

[0015] Optionally, the organic solvent may be tetrahydrofuran.

[0016] In this application, the organic solvent is preferably tetrahydrofuran, which can dissolve ethylene-vinyl acetate copolymer, has a low boiling point, is easy to remove, and can prevent the residue of tetrahydrofuran in modified antibacterial plant fibers.

[0017] Optionally, the palm fiber has a diameter of 10-20 μm, and the antibacterial chemical fiber has a diameter of 40-50 μm.

[0018] Optionally, the method for preparing the antibacterial chemical fiber includes the following steps: Low-density polyethylene powder, ethylene-vinyl alcohol copolymer, modified antibacterial plant fiber, and heat stabilizer are blended and granulated at 160-180℃ to obtain modified polyethylene masterbatch. Modified polyethylene masterbatch is melted at 160-180℃, then spun and cooled to obtain antibacterial chemical fibers.

[0019] Using melt spinning eliminates the need for preparing the spinning solution, reduces solvent usage, and prevents the generation of contaminants.

[0020] Secondly, the preparation process of the palm fiber mat provided in this application adopts the following technical solution: A process for preparing a palm fiber mat includes the following steps: The palm fibers are combed and laid into a web to form a palm fiber web layer; The antibacterial chemical fibers are combed and laid into a web to form an antibacterial adhesive web layer; An antibacterial adhesive mesh layer is respectively disposed on the upper and lower surfaces of the palm fiber mesh layer; The antibacterial adhesive mesh layers on the upper and lower layers of the palm fiber mesh are inserted into the middle palm fiber mesh layer to obtain a palm fiber mat preform. The palm fiber mat preform is heat-dried using jet hot air at a temperature of 110-150°C, followed by cold rolling and solidification to obtain the palm fiber mat.

[0021] Optionally, the density of the palm fiber web layer is 65-75 g / m², and the density of the antibacterial adhesive web layer is 85-95 g / m².

[0022] The density of the palm fiber mesh layer is 65-75 g / m², and the density of the antibacterial adhesive mesh layer is 85-95 g / m², which helps to improve the bonding strength and the durability of the palm fiber mat.

[0023] Optionally, during the hot drying process, the hot drying temperature is 110-120℃.

[0024] During hot drying, the temperature is controlled at 110-120℃, which not only melts the adhesive components in the antibacterial chemical fibers to achieve adhesion, but also prevents the adverse effects caused by excessively high temperatures, and helps to reduce energy consumption.

[0025] In summary, this application includes at least the following beneficial technical effects: (1) In this application, modified antibacterial plant fiber is used as the antibacterial component of antibacterial chemical fiber. The modified antibacterial plant fiber includes, from the inside out, antibacterial plant fiber, chitosan connecting layer, and ethylene-vinyl acetate copolymer coating layer. The antibacterial plant fiber is a natural antibacterial substance. Using natural antibacterial substances to antibacterialize palm fiber mats will not harm human health. The chitosan connecting layer is mainly composed of chitosan, which also has antibacterial properties and can improve the antibacterial properties of palm fiber mats. At the same time, the chitosan connecting layer, located between the antibacterial plant fiber and the ethylene-vinyl acetate copolymer coating layer, can improve the stability of the ethylene-vinyl acetate copolymer coating layer. The ethylene-vinyl acetate copolymer has good dispersion in low-density polyethylene powder, which can make the modified antibacterial plant fiber uniformly dispersed in the antibacterial chemical fiber, which is beneficial to improving the uniform antibacterial performance of palm fiber mats. Furthermore, since the modified antibacterial plant fibers used in this application typically employ antibacterial fibers containing special aromas, such as lavender fibers, the amount of modified antibacterial plant fibers incorporated is usually relatively large to improve antibacterial performance. This can easily lead to the release of a strong fragrance, which is detrimental to the user experience and can affect sleep. To address this issue, this application uses low-density polyethylene powder and ethylene-vinyl alcohol copolymer as the chemical fiber matrix material. By incorporating ethylene-vinyl alcohol copolymer with high barrier properties, the escape rate of aroma molecules in the modified antibacterial plant fibers is adjusted, allowing the aroma molecules to slowly and continuously evaporate. This helps improve the user experience, promotes sleep, and enhances sleep quality.

[0026] (2) In this application, the viscosity of the chitosan solution is controlled at 0.5-1.0 Pa·s, which is beneficial for the stable connection between the chitosan linking layer and the antibacterial plant fiber, and at the same time facilitates the separation of the antibacterial plant fiber from the chitosan solution, which is beneficial for obtaining pre-modified antibacterial plant fibers of uniform size. The outer periphery of the pre-modified antibacterial plant fiber is coated with an ethylene-vinyl acetate copolymer coating layer, wherein the melt index of the ethylene-vinyl acetate copolymer is controlled at 40-55 g / 10 min, and the vinyl acetate content is 30-40%. This not only enables the ethylene-vinyl acetate copolymer coating layer to bond stably with the chitosan linking layer, but also improves the elasticity of the modified antibacterial plant fiber, which is beneficial for improving the durability of the palm fiber mat. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the modified antibacterial plant fiber of this application.

[0028] Figure label: 1. Antibacterial plant fiber; 2. Chitosan connecting layer; 3. Ethylene-vinyl acetate copolymer coating layer. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the embodiments and comparative examples. Unless otherwise specified, the lavender fibers used in the present application are all purchased from Bunt and have a length of 5-10 mm. Example

[0030]

Example 1

[0031] In this embodiment, the diameter of the palm fiber is 10-20 μm, and the diameter of the antibacterial chemical fiber is 40-50 μm.

[0032] The preparation method of antibacterial chemical fibers includes the following steps: Preparation of modified lavender fiber: Chitosan was dissolved in lactic acid solution to prepare a chitosan solution with a viscosity of 1 Pa·s; Add 15 kg of lavender fiber to 1000 kg of chitosan solution, stir for 2 hours, then separate the lavender fiber and dry it to obtain pre-modified lavender fiber with a chitosan linking layer 2 on the surface. 4 kg of ethylene-vinyl acetate copolymer was dissolved in 100 kg of tetrahydrofuran to obtain an ethylene-vinyl acetate dispersion; wherein the ethylene-vinyl acetate copolymer had a melt index of 43 g / 10 min (test conditions: 190℃ / 2.16 kg), a vinyl acetate content of 32% by weight, and was Dow Chemical's ELVAX product. TM 150W; The pre-modified antibacterial plant fiber was added to the ethylene-vinyl acetate dispersion and stirred for 2 hours. Then the pre-modified lavender fiber was separated and the tetrahydrofuran on the pre-modified lavender fiber was removed by heating, resulting in modified lavender fiber with an ethylene-vinyl acetate copolymer coating layer 3 on the outer surface. Preparation of antibacterial chemical fibers: 45 kg of low-density polyethylene powder, 10 kg of ethylene-vinyl alcohol copolymer, 12 kg of modified lavender fiber, and 1 kg of heat stabilizer were blended and granulated at 160 °C to obtain modified polyethylene masterbatch. The low-density polyethylene powder had a melt index of 70 g / 10 min (test conditions: 190 °C / 2.16 kg) and was of Qatar Petrochemical's MG70 type. The ethylene-vinyl alcohol copolymer had a melt index of 5.5 g / 10 min (test conditions: 190 °C / 2.16 kg) and an ethylene molar content of 44% and was of Changchun's EV-4405F type. Zinc stearate was used as the heat stabilizer. Modified polyethylene masterbatch is melted at 160℃, then spun and cooled to obtain antibacterial chemical fibers with a fiber diameter of 40-50μm.

[0033]

Example 2

[0034] In this embodiment, the diameter of the palm fiber is 10-20 μm, and the diameter of the antibacterial chemical fiber is 40-50 μm.

[0035] The preparation method of antibacterial chemical fibers includes the following steps: Preparation of modified lavender fiber: Chitosan was dissolved in lactic acid solution to prepare a chitosan solution with a viscosity of 1 Pa·s; Add 20 kg of lavender fiber to 1000 kg of chitosan solution, stir for 8 hours, then separate the lavender fiber and dry it to obtain pre-modified lavender fiber with a chitosan linking layer 2 on the surface. 8 kg of ethylene-vinyl acetate copolymer was dissolved in 100 kg of tetrahydrofuran to obtain an ethylene-vinyl acetate dispersion; wherein the ethylene-vinyl acetate copolymer had a melt index of 52 g / 10 min (test conditions: 190℃ / 2.16 kg), a vinyl acetate content of 40% by weight, and was Dow Chemical's ELVAX product.TM 40W; The pre-modified antibacterial plant fiber was added to the ethylene-vinyl acetate dispersion and stirred for 4 hours. Then the pre-modified lavender fiber was separated and the tetrahydrofuran on the pre-modified lavender fiber was removed by heating, resulting in modified lavender fiber with an ethylene-vinyl acetate copolymer coating layer 3 on the outer surface. Preparation of antibacterial chemical fibers: 55 kg of low-density polyethylene powder, 15 kg of ethylene-vinyl alcohol copolymer, 16 kg of modified lavender fiber, and 2 kg of heat stabilizer were blended and granulated at 160 °C to obtain modified polyethylene masterbatch. The low-density polyethylene powder had a melt index of 50 g / 10 min (test conditions: 190 °C / 2.16 kg) and was of Sinopec's 868-000 grade. The ethylene-vinyl alcohol copolymer had a melt index of 4.4 g / 10 min (test conditions: 190 °C / 2.16 kg) and an ethylene molar content of 32% and was of Kuraray's EVAL type. TM F104; The heat stabilizer used is calcium stearate; Modified polyethylene masterbatch is melted at 180℃, then spun and cooled to obtain antibacterial chemical fibers with a fiber diameter of 40-50μm.

[0036]

Example 3

[0037] In this embodiment, the viscosity of the chitosan solution is 50 Pa·s.

[0038]

Example 4

[0039] In this embodiment, the melt index of the ethylene-vinyl acetate copolymer was 400 g / 10 min (test conditions: 190℃ / 2.16 kg), the vinyl acetate content was 28% by weight, and the product was Dow Chemical's ELVAX. TM 210A.

[0040] Comparative Example Comparative Example 1 A palm fiber mat differs from [Example 1] in that the melt index of the low-density polyethylene powder is different.

[0041] In this comparative example, the melt flow index of the low-density polyethylene powder was 6 g / 10 min (test conditions: 190℃ / 2.16 kg), and the product was from Lotte Chemical. XL505B.

[0042] Comparative Example 2 A palm fiber mat, which differs from [Example 1] in that it does not contain ethylene-vinyl alcohol copolymer.

[0043] Performance testing 1. Sleep-aiding effect: Sixty volunteers with insomnia symptoms were randomly selected and divided into 6 groups of 10 each. The sleep-aiding effect of the palm fiber mat on each volunteer was tested in the same independent environment. The score was as follows: 10 points for falling asleep within 15 minutes; 8 points for falling asleep within 15-30 minutes; 5 points for falling asleep within 30-60 minutes; and 0 points for falling asleep within 60 minutes. The number of people who fell asleep at different stages is recorded in Table 1 below.

[0044] 2. Antibacterial effect: The antibacterial rate and antibacterial stability were tested according to the method in Appendix C of GB / T 15979-2002. When testing the antibacterial stability, the palm fiber mat sample was stored naturally for one year, and the antibacterial rate of the palm fiber mat was tested. The test results are recorded in Table 2 below.

[0045] 3. Compression set: The test shall be conducted in accordance with Section 6.4.4 of GB / T 26706-2011, and the test results shall be recorded in Table 3 below.

[0046] 4. Durability: Tested according to Appendix A of GB / T 26706-2011, and the initial surface height H was recorded. d0 The height H of the pad surface after 100 cycles of loading. d1 And the pad height H after 29,900 cyclic loading cycles d2 The test results are recorded in Table 4 below.

[0047] Table 1 Table 2 Table 3 Example 1 1.2 Example 2 0.9 Example 3 1.8 Example 4 3.8 Comparative Example 1 13.5 Comparative Example 2 8.8 Table 4 Based on the data from Example 1, Comparative Example 1, and Tables 1-4, it can be seen that when the melt index of the low-density polyethylene powder in the antibacterial chemical fiber of Comparative Example 1 is not within the range of this application, the effect of the palm fiber mat in helping people fall asleep is not significantly different from that of the Example, and the antibacterial effect and antibacterial stability are also not significantly different. However, the compression set and durability of the palm fiber mat are significantly reduced. The reason may be that when the melt index of the low-density polyethylene powder is not within the range of this application, the melting effect is affected, resulting in a decrease in the bonding strength or strength of the palm fiber mat, which in turn leads to a significant change in the compression set and durability of the palm fiber mat.

[0048] Based on the data from Example 1, Comparative Example 2, and Tables 1-4, it can be seen that: Comparative Example 2 did not contain ethylene-vinyl alcohol copolymer in its antibacterial chemical fiber. Due to the large amount of antibacterial chemical fiber incorporated, the palm fiber mat easily emitted a strong fragrance during initial use, which not only failed to promote sleep but also seriously affected the user's sleep. Furthermore, the absence of ethylene-vinyl alcohol copolymer also led to a significant decrease in the antibacterial stability of the palm fiber mat, along with a reduction in its compression set and durability.

[0049] Based on the data from Examples 1 and 3 and Tables 1-4, it can be seen that the viscosity of the chitosan solution in Example 3 is not within the range of 0.5-1.0 Pa·s, and the effect of the palm fiber mat in helping people fall asleep is not much different from that in Example 1; however, the antibacterial rate and antibacterial stability of the palm fiber mat are reduced because the size of the modified lavender fibers is inconsistent, which affects the uniformity of the dispersion of the modified lavender fibers. The antibacterial rate varies greatly in different parts of the palm fiber mat, resulting in poor antibacterial stability of the palm fiber.

[0050] Based on the data from Examples 1 and 4 and Tables 1-4, it can be seen that the melt index of the ethylene-vinyl acetate copolymer in Example 4 is not within the range of this application, and the effect of the palm fiber mat in helping to fall asleep is not much different from that in Example 1; however, the compression set and durability of the palm fiber mat are reduced.

[0051] 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 specific 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 palm fiber mat, characterized in that, It is obtained by intertwining palm fibers and antibacterial chemical fibers, and then bonding the palm fibers with hot-melt antibacterial chemical fibers; The antibacterial chemical fiber is prepared from low-density polyethylene powder, ethylene-vinyl alcohol copolymer, modified antibacterial plant fiber and heat stabilizer in a weight ratio of (45-55):(10-15):(12-16):(1-2); the melt index of the low-density polyethylene powder is 50-70 g / 10 min, and the melt index of the ethylene-vinyl alcohol copolymer is 4-6 g / 10 min. The modified antibacterial plant fiber includes, from the inside out, an antibacterial plant fiber (1), a chitosan connecting layer (2), and an ethylene-vinyl acetate copolymer coating layer (3).

2. The palm fiber mat according to claim 1, characterized in that: The preparation method of the modified antibacterial plant fiber includes the following steps: Chitosan was dissolved in lactic acid solution to prepare a chitosan solution with a viscosity of 0.5-1.0 Pa·s; Antibacterial plant fiber (1) is added to the chitosan solution and stirred for 2-8 hours. Then, the antibacterial plant fiber (1) is separated and dried to obtain pre-modified antibacterial plant fiber with the chitosan linking layer (2) formed on the surface. The weight ratio of the chitosan solution to the antibacterial plant fiber (1) is 1000:(15-20). The ethylene-vinyl acetate copolymer is dissolved in an organic solvent to obtain an ethylene-vinyl acetate dispersion; wherein the melt index of the ethylene-vinyl acetate copolymer is 40-55 g / 10 min, the content of vinyl acetate is 30-40%, and the weight ratio of the ethylene-vinyl acetate copolymer to the organic solvent is (4-8):

100. The pre-modified antibacterial plant fiber was added to an ethylene-vinyl acetate dispersion and stirred for 2-4 hours. Then the pre-modified antibacterial plant fiber was separated and the organic solvent on the pre-modified antibacterial plant fiber was removed by heating to obtain a modified antibacterial plant fiber with an ethylene-vinyl acetate copolymer coating layer (3) formed on the outer surface.

3. A palm fiber mat according to claim 2, characterized in that: The antibacterial plant fiber (1) has a length of 5-10 mm.

4. A palm fiber mat according to claim 2, characterized in that: The antibacterial plant fiber (1) is lavender fiber.

5. A palm fiber mat according to claim 2, characterized in that: The organic solvent used is tetrahydrofuran.

6. A palm fiber mat according to claim 1, characterized in that: The palm fiber has a diameter of 10-20 μm, and the antibacterial chemical fiber has a diameter of 40-50 μm.

7. A palm fiber mat according to claim 1, characterized in that: The method for preparing the antibacterial chemical fiber includes the following steps: Low-density polyethylene powder, ethylene-vinyl alcohol copolymer, modified antibacterial plant fiber, and heat stabilizer are blended and granulated at 160-180℃ to obtain modified polyethylene masterbatch. Modified polyethylene masterbatch is melted at 160-180℃, then spun and cooled to obtain antibacterial chemical fibers.

8. The preparation process of a palm fiber mat according to any one of claims 1-7, characterized in that: Includes the following steps: The palm fibers are combed and laid into a web to form a palm fiber web layer; The antibacterial chemical fibers are combed and laid into a web to form an antibacterial adhesive web layer; An antibacterial adhesive mesh layer is respectively disposed on the upper and lower surfaces of the palm fiber mesh layer; The antibacterial adhesive mesh layers on the upper and lower layers of the palm fiber mesh are inserted into the middle palm fiber mesh layer to obtain a palm fiber mat preform. The palm fiber mat preform is heat-dried using jet hot air at a temperature of 110-150°C, followed by cold rolling and solidification to obtain the palm fiber mat.

9. The preparation process of a palm fiber mat according to claim 8, wherein the density of the palm fiber mesh layer is 65-75 g / m², and the density of the antibacterial adhesive mesh layer is 85-95 g / m².

10. The preparation process of a palm fiber mat according to claim 8, characterized in that: During hot drying, the hot drying temperature is 110-120℃.

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