Environment-friendly weeding cloth and preparation method thereof

Abstract

The invention provides environment-friendly weeding cloth and a preparation method thereof, and belongs to the technical field of non-woven fabrics. The environment-friendly weeding cloth is prepared from wood pulp fibers and ES fibers, the core layer of the ES fibers is polypropylene (PP), plays a role of main fibers and can improve the strength of the environment-friendly weeding cloth, and the skin layer of the ES fibers is polyethylene (PE), plays a role of hot melting bonding and can improve the toughness of the environment-friendly weeding cloth; in the preparation process of the environment-friendly weeding cloth, during heat treatment, the skin layer part is fused and has a bonding effect, and the core layer part is kept in a fiber state, so that effective and uniform bonding points are formed in a woven net, ES fibers and wood pulp fibers are effectively combined, and the strength and toughness of the environment-friendly weeding cloth are improved.

Description

Technical Field

[0001] The invention relates to the technical field of nonwoven fabrics, and in particular to an environmentally friendly weed control cloth and a preparation method thereof. Background Art

[0002] In agricultural production, weed control and weed control in cultivation are time-consuming, labor-intensive and costly tasks. In order to reduce input and increase output, pesticides are usually used for weed control. However, weed control pesticides are highly toxic, polluting water and soil resources, and being absorbed by crops, polluting food and vegetables, seriously deterring human safety. In recent years, plastic films referred to as "PP and PE" have been used in large-scale weed control and weed control in various places. This petrochemical byproduct has been limited to the production of black garbage bags, low-end woven bags or engineering rain and sunshade purposes. Due to its poor air permeability, fast heat accumulation, slow heat dissipation and difficulty in degradation, weathered fragments will become acidic solid waste. After accumulating in the soil, it will seriously damage the normal "pH value" and other disadvantages. Like "herbicides and pesticides, many agricultural powers have legislated and regulated, and this type of plastic film is not allowed to be used for farmland plant protection. Users are also short-sighted in order to save the high cost of manual mowing, and producers are even more irresponsible, because environmental problems will arise from the source of production to the use in orchards. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an environmentally friendly weed control cloth and a preparation method thereof.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present disclosure is: an environmentally friendly weed control cloth, comprising the following components in percentage by mass: 75-82% wood pulp fiber and 18-25% ES fiber.

[0005] In some embodiments, the environmentally friendly weed control cloth comprises the following components in percentage by weight: 78-80% wood pulp fiber and 20-22% ES fiber.

[0006] In some embodiments, the environmentally friendly weed control cloth includes the following components in percentage by weight: 80% wood pulp fiber and 22% ES fiber.

[0007] In some embodiments, the ES fiber has an oil content of 0.36-0.37% and a linear density of 2.24-2.26 dtex.

[0008] In some embodiments, the wood pulp fibers have a length of 2.5-2.7 mm.

[0009] In some embodiments, the mass percentage of natural plant components in the wood pulp fibers is greater than 80%.

[0010] In some embodiments, the weight of the environmentally friendly weed control cloth is 80-400 g / m 2 .

[0011] In a second aspect, a method for preparing the environmentally friendly weed control cloth is provided, comprising the following steps: crushing wood pulp fiber and ES fiber respectively, mixing them evenly, stirring and melting them through eight-stage heating processes, spinning them into primary filaments, and then drawing them to obtain the environmentally friendly weed control cloth;

[0012] Among them, the starting temperature of the first heating process is 0°C and the target temperature is 20°C, the target temperatures of the second to eighth heating processes are 50°C, 70°C, 90°C, 100°C, 115°C, 130°C and 140°C respectively, the heating rate of the first heating process is 1-2°C / min, the heating rate of the second heating process is 2.5-3°C / min, the heating rate of the third heating process is 1-2°C / min, the heating rate of the fourth heating process is 2.5-3°C / min, the heating rate of the fifth heating process is 1-2°C / min, the heating rate of the sixth heating process is 2.5-3°C / min, the heating rate of the seventh heating process is 1-2°C / min, and the heating rate of the eighth heating process is 2.5-3°C / min.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention uses wood pulp fiber and ES fiber to prepare an environmentally friendly weed control cloth, wherein the ES fiber is a two-component low-melting-point hot-melt fiber, the core layer of the ES fiber is polypropylene (PP), which plays the role of the main fiber and can increase the strength of the environmentally friendly weed control cloth, and the skin layer of the ES fiber is polyethylene (PE), which plays the role of hot-melt bonding and can increase the toughness of the environmentally friendly weed control cloth; in the preparation process of the environmentally friendly weed control cloth, during heat treatment, the skin layer partially melts to produce a bonding effect, and the core layer partially maintains a fiber state, thereby forming effective and uniform bonding points in the woven web, so that the ES fiber and the wood pulp fiber are effectively combined, thereby improving the strength and toughness of the environmentally friendly weed control cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of laying the environmentally friendly weed control cloth of the present invention on different fruit trees;

[0015] Figure 2 This is a real-time picture of laying the environmentally friendly weed control cloth of Example 1 and installing the soil composition change sensor in Application Example 1.

[0016] Figure 3 This is the temperature variation diagram of the soil in Application Example 1;

[0017] Figure 4 This is the pH value change diagram of the soil in Application Example 1;

[0018] Figure 5This is the change diagram of N, P and K content in the soil in Application Example 1;

[0019] Figure 6 This is a diagram showing the appearance changes of the environmentally friendly weed control cloth in the test group in Application Example 1. DETAILED DESCRIPTION

[0020] In order to facilitate understanding of the present disclosure, the present disclosure will be described more fully below. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present disclosure more thorough and comprehensive.

[0021] As used herein:

[0022] "Prepared from" is synonymous with "comprising." As used herein, the terms "comprising," "including," "having," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises the listed elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

[0023] The conjunction "consisting of excludes any unspecified element, step, or component. If used in a claim, this phrase renders the claim closed-ended so that it does not include materials other than those described, except for conventional impurities associated therewith. When the phrase "consisting of" appears in a clause of the body of a claim rather than immediately following the subject matter, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0024] When amount, concentration or other value or parameter is represented by range, preferred range or a series of upper preferred value and lower preferred value, this should be understood as specifically disclosing all ranges formed by any pairing of any range upper limit or preferred value and any range lower limit or preferred value, regardless of whether the range is disclosed separately. For example, when disclosing range "1-5", described range should be interpreted as including range "1-4", "1-3", "1-2", "1-2 and 4-5", "1-3 and 5" etc. When numerical range is described in this article, unless otherwise stated, the range is intended to include its end value and all integers and fractions within the range.

[0025] In these examples, parts and percentages are by mass unless otherwise indicated.

[0026] "Parts by mass" refers to the basic unit of measurement for expressing the mass ratio of multiple components. 1 part can represent any unit mass, such as 1g or 2.689g. If we say that the mass of component A is a parts and the mass of component B is b parts, it means the ratio of the mass of component A to the mass of component B is a:b. Alternatively, it means that the mass of component A is aK and the mass of component B is bK (K is an arbitrary number, indicating a multiple factor). It should not be misunderstood that, unlike the mass parts, the sum of the mass of all components is not limited to 100 parts.

[0027] “And / or” is used to indicate that one or both of the stated situations may occur, for example, A and / or B includes (A and B) and (A or B).

[0028] The invention provides an environmentally friendly weed control cloth, which comprises the following components in percentage by mass: 75-82% of wood pulp fiber and 18-25% of ES fiber.

[0029] For example, in different embodiments, the mass percentage of the wood pulp fiber may be, but is not limited to, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%; preferably 78-80%, more preferably 80%;

[0030] For example, in different embodiments, the mass percentage of the ES fiber can be, but is not limited to, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%; preferably 20-22%, more preferably 20%.

[0031] The present invention uses wood pulp fiber and ES fiber to prepare an environmentally friendly weed control cloth, wherein the ES fiber is a two-component low-melting-point hot-melt fiber, the core layer of the ES fiber is polypropylene (PP), which plays the role of a main fiber and can increase the strength of the environmentally friendly weed control cloth, and the skin layer of the ES fiber is polyethylene (PE), which plays the role of hot-melt bonding and can increase the toughness of the environmentally friendly weed control cloth; in the preparation process of the environmentally friendly weed control cloth, during heat treatment, the skin layer partially melts to produce a bonding effect, and the core layer partially maintains a fiber state, thereby forming effective and uniform bonding points in the woven web, so that the ES fiber and the wood pulp fiber are effectively combined, thereby improving the strength and toughness of the environmentally friendly weed control cloth.

[0032] The mass percentage of wood pulp fiber and ES fiber will affect the performance of environmentally friendly weed control cloth. If the mass percentage of ES fiber is too high, it will easily make the environmentally friendly weed control cloth hard, reduce air permeability and water absorption, and be more difficult to degrade, which is not conducive to fruit tree management and soil protection. If the mass percentage of wood pulp fiber is too high, it will easily make the environmentally friendly weed control cloth soft, reduce strength, toughness and durability, thereby increasing the cost of use.

[0033] In some embodiments, the oil content of the ES fiber is 0.36-0.37%, for example, it can be but not limited to 0.36%, 0.362%, 0.364%, 0.366%, 0.368%, 0.37%; the linear density is 2.24-2.26dtex, for example, it can be but not limited to 2.24dtex, 2.25dtex, 2.26dtex.

[0034] In the present invention, the length of the ES fiber is within the above range, which is beneficial to improving the strength and toughness of the environmentally friendly weed control cloth.

[0035] In some embodiments, the length of the wood pulp fibers is 2.5-2.7 mm, for example, but not limited to, 2.5 mm, 2.55 mm, 2.6 mm, 2.65 mm, and 2.7 mm.

[0036] In the present invention, the length of the wood pulp fiber is within the above range, which can reduce the phenomenon of loose and broken fibers in the environmentally friendly weeding cloth, improve the strength and toughness of the environmentally friendly weeding cloth, thereby improving the yield-increasing and weed-killing effects of the environmentally friendly weeding cloth, and improve the water retention, fertilizer retention, heat dissipation and pH improvement effects of the environmentally friendly weeding cloth on the soil.

[0037] In some embodiments, the mass percentage of natural plant components in the wood pulp fiber is greater than 80%, for example, 80-95%.

[0038] The wood pulp fiber of the invention contains a large amount of natural plant components, which improves the degradability of the environmentally friendly weeding cloth and reduces the pollution of the environmentally friendly weeding cloth to the soil.

[0039] In some embodiments, the weight of the environmentally friendly weed control cloth is 80-400 g / m 2 , for example, but not limited to 80g / m 2 , 100g / m 2 , 150g / m 2 , 200g / m 2 , 250g / m 2 , 300g / m 2 , 350g / m 2 , 400g / m 2 .

[0040] In the present invention, the gram weight of the environmentally friendly weed control cloth is within the above range, which is beneficial to the yield increase and weed control effect of the environmentally friendly weed control cloth, and improves the water retention, fertilizer retention, heat dissipation and pH improvement effect of the environmentally friendly weed control cloth on the soil.

[0041] In some embodiments, the environmentally friendly weed control cloth has a thickness of 1.5-2 mm.

[0042] The environmentally friendly weed control cloth of the present invention can be cut according to different economic crops, different terrains and tree ages. For example, it can be cut according to the drip level size of the fruit tree crown, such as Figure 1 As shown, when laying, spread the environmentally friendly weed control cloth under the fruit tree and fix it with wooden nails.

[0043] In a second aspect, a method for preparing the environmentally friendly weed control cloth is provided, comprising the following steps: crushing wood pulp fiber and ES fiber respectively, mixing them evenly, stirring and melting them through eight-stage heating processes, spinning them into primary filaments, and then drawing them to obtain the environmentally friendly weed control cloth;

[0044] Among them, the starting temperature of the first heating process is 0°C and the target temperature is 20°C, the target temperatures of the second to eighth heating processes are 50°C, 70°C, 90°C, 100°C, 115°C, 130°C and 140°C respectively, the heating rate of the first heating process is 1-2°C / min, the heating rate of the second heating process is 2.5-3°C / min, the heating rate of the third heating process is 1-2°C / min, the heating rate of the fourth heating process is 2.5-3°C / min, the heating rate of the fifth heating process is 1-2°C / min, the heating rate of the sixth heating process is 2.5-3°C / min, the heating rate of the seventh heating process is 1-2°C / min, and the heating rate of the eighth heating process is 2.5-3°C / min.

[0045] The present invention adopts the above-mentioned heating process to prepare the environmentally friendly weeding cloth, which can ensure the uniform bonding of wood pulp fibers and ES fibers, and improve the strength, toughness, air permeability and weed control effect of the environmentally friendly weeding cloth; if the temperature is directly raised from room temperature to 140°C, the environmentally friendly weeding cloth will become brittle, loose and without strength, and will break at the touch. In addition, in the preparation process of the environmentally friendly weeding cloth, different heating rates are used crosswise, which can effectively increase the bonding points of wood pulp fibers and ES fibers, improve the strength, toughness, yield increase, and weed control effect of the environmentally friendly weeding cloth, and improve the water retention, fertilizer retention, heat dissipation and pH improvement of the environmentally friendly weeding cloth on the soil.

[0046] In order to further illustrate the present invention, the environmentally friendly weed control cloth and the preparation method thereof provided by the present invention are described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0047] Example 1

[0048] This embodiment provides a method for preparing an environmentally friendly weed control cloth, comprising the following steps:

[0049] 80wt% of wood pulp fiber and 20wt% of ES fiber are fed into the pulverizer through two feeding slots, crushed and mixed evenly, stirred and melted through eight stages of heating process, spun into primary filaments, and then stretched to obtain 220g / m 2 Environmentally friendly weed control cloth;

[0050] Among them, the starting temperature of the first heating process is 0°C and the target temperature is 20°C; the target temperatures of the second to eighth heating processes are 50°C, 70°C, 90°C, 100°C, 115°C, 130°C and 140°C respectively; the heating rate of the first heating process is 1.5°C / min, the heating rate of the second heating process is 2.8°C / min, the heating rate of the third heating process is 1.5°C / min, the heating rate of the fourth heating process is 2.8°C / min, the heating rate of the fifth heating process is 1.5°C / min, the heating rate of the sixth heating process is 2.8°C / min, the heating rate of the seventh heating process is 1.5°C / min, and the heating rate of the eighth heating process is 2.8°C / min.

[0051] Example 2

[0052] This embodiment provides a method for preparing an environmentally friendly weed control cloth, comprising the following steps:

[0053] 75wt% of wood pulp fiber and 25wt% of ES fiber are fed into the pulverizer through two feeding slots, crushed and mixed evenly, stirred and melted through eight stages of heating process, spun into primary filaments, and then stretched to obtain 100g / m 2 Environmentally friendly weed control cloth;

[0054] Among them, the starting temperature of the first heating process is 0°C and the target temperature is 20°C; the target temperatures of the second to eighth heating processes are 50°C, 70°C, 90°C, 100°C, 115°C, 130°C and 140°C respectively; the heating rate of the first heating process is 1°C / min, the heating rate of the second heating process is 3°C / min, the heating rate of the third heating process is 1°C / min, the heating rate of the fourth heating process is 3°C / min, the heating rate of the fifth heating process is 1°C / min, the heating rate of the sixth heating process is 3°C / min, the heating rate of the seventh heating process is 1°C / min, and the heating rate of the eighth heating process is 3°C / min.

[0055] Example 3

[0056] This embodiment provides a method for preparing an environmentally friendly weed control cloth, comprising the following steps:

[0057] 82wt% of wood pulp fiber and 18wt% of ES fiber were fed into the pulverizer through two feeding slots, crushed and mixed evenly, and then stirred and melted through eight stages of heating process. After being spun into primary filaments, 400g / m 2 Environmentally friendly weed control cloth;

[0058] Among them, the starting temperature of the first heating process is 0°C and the target temperature is 20°C; the target temperatures of the second to eighth heating processes are 50°C, 70°C, 90°C, 100°C, 115°C, 130°C and 140°C respectively; the heating rate of the first heating process is 2°C / min, the heating rate of the second heating process is 2.5°C / min, the heating rate of the third heating process is 2°C / min, the heating rate of the fourth heating process is 2.5°C / min, the heating rate of the fifth heating process is 2°C / min, the heating rate of the sixth heating process is 2.5°C / min, the heating rate of the seventh heating process is 2°C / min, and the heating rate of the eighth heating process is 2.5°C / min.

[0059] Comparative Example 1

[0060] This comparative example provides a method for preparing an environmentally friendly weed control cloth, which differs from the method for preparing an environmentally friendly weed control cloth in Example 1 only in that the mass percentage of wood pulp fiber is 90wt%, the mass percentage of ES fiber is 10wt%, and the parameters and steps are the same.

[0061] Comparative Example 2

[0062] This comparative example provides a method for preparing an environmentally friendly weed control cloth, which differs from the method for preparing an environmentally friendly weed control cloth in Example 1 only in that the heating rates of the heating process are different. The heating rates of the first to eighth heating processes in this comparative example are all 5°C / min.

[0063] Comparative Example 3

[0064] This comparative example provides a method for preparing an environmentally friendly weed control cloth. The difference between this method and the method for preparing an environmentally friendly weed control cloth in Example 1 is that the heating process is different. The heating process in this comparative example is:

[0065] The starting temperature of the first heating process is 20°C and the target temperature is 30°C. The target temperatures of the second to eighth heating processes are 50°C, 70°C, 90°C, 100°C, 115°C, 130°C and 140°C respectively. The heating rate of the first heating process is 1.5°C / min, the heating rate of the second heating process is 2.8°C / min, the heating rate of the third heating process is 1.5°C / min, the heating rate of the fourth heating process is 2.8°C / min, the heating rate of the fifth heating process is 1.5°C / min, the heating rate of the sixth heating process is 2.8°C / min, the heating rate of the seventh heating process is 1.5°C / min, and the heating rate of the eighth heating process is 2.8°C / min.

[0066] Performance Testing

[0067] The environmentally friendly weed control cloth obtained in the embodiment and the comparative example was tested, and the testing method was as follows:

[0068] The standard GB / T24292-2009 was used to test the tensile strength, bursting strength, water absorption rate, thickness and surface pH value of the environmentally friendly weed control cloth. The test results are shown in Table 1.

[0069] Table 1

[0070]

[0071] From the experimental data in Table 1, it can be seen that the environmentally friendly weed control cloth of the present invention is best when it is compounded with 75-82% wood pulp fiber and 18-25% ES fiber, especially 80% wood pulp fiber and 20% ES. It is more suitable for the production of agricultural weed control cloth. Too much ES fiber will easily make the product hard, reduce water absorption and air permeability, and be difficult to degrade. Too much wood pulp fiber will easily make the product soft, reduce strength and durability, and is not suitable for outdoor laying.

[0072] Application Example 1

[0073] This application example tests the effects of the environmentally friendly weed control cloth of Example 1 of the present invention on increasing crop yield, weed control, and improving soil.

[0074] The specific steps are as follows:

[0075] On September 12, 2023, in Ganzhuangtang, Songkou Town, Meixian District, Meizhou City, 24 honey pomelo trees over 12 years old were selected from the "honey pomelo planting area" in the National Modern Agricultural Industrial Park Pomelo Standardized Planting Demonstration Base (Jiafeng Pomelo Farm) and randomly divided into 4 groups, 6 trees in each group; the yield of the four groups of honey pomelo trees just picked was recorded before the experiment. After cleaning the garden, applying post-harvest fertilizer, pruning and other steps, weed cloths of different materials were laid, and soil composition change sensors (such as Figure 2As shown in the figure, the changes of soil after laying weeding cloths of different materials were collected remotely; among them, the blank group did not lay weeding cloth (denoted as Control), and manual weeding was used; the experimental group laid the environmentally friendly weeding cloth of Example 1 of the present invention (denoted as HF), the PP group laid the PP weeding cloth (denoted as PP), and the PE group laid the PE weeding cloth (denoted as PE); the experimental period was one year.

[0076] The test results are shown in Table 2-3 and Figure 3-6 shown.

[0077] Table 2 Yield and quality results of honey pomelo

[0078]

[0079] Table 3 Soil improvement

[0080]

[0081] It can be seen from the experimental data in Table 2 that the environmentally friendly weed control cloth of the present invention can effectively improve the yield and quality of grapefruit, indicating that the environmentally friendly weed control cloth of the present invention can improve the yield and quality of economic crops with low cost.

[0082] It can be seen from the experimental data in Table 3 that when the environmentally friendly weeding cloth of the present invention is used, the moisture reduction period of the soil is 5-7 days, and the water and fertilizer absorption rate reaches 100%, indicating that the environmentally friendly weeding cloth of the present invention has excellent water and fertilizer retention and soil pH adjustment functions. The blank group without weeding cloth is bare land. The use of chemical fertilizers or water fertilizers will be evaporated and diluted by high temperature or rainwater, and will be robbed by weeds, resulting in the water and fertilizer absorption rate of the grapefruit tree being only 50%; the water retention and heat dissipation performance of PP weeding cloth and PE weeding cloth are poor. The high temperature of the soil will cause part of the water and fertilizer to evaporate, thereby reducing the water and fertilizer absorption rate of the grapefruit water.

[0083] The environmentally friendly weed control cloth of the present invention has good air permeability, so that the heat dissipation performance of the environmentally friendly weed control cloth is better. It can not only reduce the rapid loss of surface heat, but also have an appropriate amount of air circulation to prevent the soil temperature from being too high or too low. Therefore, the soil heat dissipation process of the experimental group is relatively mild, and it can avoid overheating or overcooling of the soil while maintaining a suitable temperature.

[0084] The air permeability and water permeability of PE weed control cloth are poor, which causes the soil to dissipate heat slowly under the cover of PE weed control cloth. In a high temperature environment, while the black PE weed control cloth absorbs heat, its poor air permeability and water permeability make it difficult to dissipate heat. When the soil absorbs heat during the day, it will overheat, which can easily cause the soil to overheat and affect the health of the plant roots.

[0085] PP weed control cloth has strong air permeability and water permeability, and dissipates heat quickly. At night or when the temperature is low, the heat of the soil is lost quickly, causing the temperature to drop quickly, affecting the insulation effect of the plant roots.

[0086] The blank group is bare land, where the soil dissipates heat the fastest and is more severely affected by changes in the external environment, resulting in large fluctuations in soil temperature, which is not conducive to maintaining a stable temperature state for the soil.

[0087] Figure 3 is the temperature variation diagram of the soil in Application Example 1; Figure 3 It can be seen that the soil temperature at a depth of 20-25cm lags behind the changes in the external environment and fluctuates slightly. There is no significant difference in the soil temperature at a depth of 20-25cm among the blank group, the experimental group with weed control cloth, the PP group and the PE group. The strong heat buffering capacity and soil content of the soil further affect the deep soil temperature, which means that the change of soil temperature at a depth of 20-25cm is less affected by surface conditions.

[0088] Figure 4 is the pH value change diagram of the soil in Application Example 1; Figure 4 It can be seen that the soil pH value at a depth of 20-25cm is stable at around 6, which meets the optimal soil conditions for growing grapefruit trees. There is no significant difference in the soil pH value at a depth of 20-25cm among the blank group, the experimental group with weed control cloth, the PP group and the PE group.

[0089] Figure 5 The N, P, and K content changes of the soil in Application Example 1 are shown in Figure 1. Figure 5 It can be seen that compared with the blank group, the test group, PP group and PE group laid with weed control cloth can effectively reduce the loss of N, P and K in the soil, especially in spring and summer (March-August 2024), especially in the test group, the loss of N, P and K in the soil is the least, indicating that the environmentally friendly weed control cloth of the present invention exhibits good nutrient retention performance.

[0090] Figure 6 The following are the appearance changes of the environmentally friendly weed control cloth in the test group of Application Example 1, where A is the appearance after 8 months of laying, B is a partial view of A, and C is the appearance after 12 months of laying. Figure 6 It can be seen that from September 2023 to April 2024, the environmentally friendly weed control cloth of the test group was still intact and had good durability after being laid in a high temperature environment for 8 months; from April 2024 to August 2024, high temperature, frequent rainfall and local floods accelerated the degradation of the environmentally friendly weed control cloth, indicating that the environmentally friendly weed control cloth of the present invention has high durability and degradability.

[0091] Finally, it should be noted that the above embodiments are used to illustrate the technical solution of the present disclosure rather than to limit the protection scope of the present disclosure. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present disclosure can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present disclosure.

Claims

1. An environmentally friendly weed control cloth, characterized in that: The invention comprises the following components in percentage by weight: 75-82% wood pulp fiber and 18-25% ES fiber.

2. The environmentally friendly weed control cloth according to claim 1, characterized in that: The invention comprises the following components in percentage by weight: 78-80% wood pulp fiber and 20-22% ES fiber.

3. The environmentally friendly weed control cloth according to claim 1, characterized in that: The invention comprises the following components in percentage by weight: 80% wood pulp fiber and 22% ES fiber.

4. The environmentally friendly weed control cloth according to any one of claims 1 to 3, characterized in that: The ES fiber has an oil content of 0.36-0.37% and a linear density of 2.24-2.26 dtex.

5. The environmentally friendly weed control cloth according to any one of claims 1 to 3, characterized in that: The length of the wood pulp fibers is 2.5-2.7 mm.

6. The environmentally friendly weed control cloth according to any one of claims 1 to 3, characterized in that: The mass percentage of natural plant components in the wood pulp fiber is more than 80%.

7. The environmentally friendly weed control cloth according to any one of claims 1 to 3, characterized in that: The weight of the environmentally friendly weed control cloth is 80-400g / m 2 .

8. A method for preparing the environmentally friendly weed control cloth according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: crushing wood pulp fiber and ES fiber respectively, mixing them evenly, stirring and melting them through eight-stage heating processes, spinning them into primary silk, and then drawing them to obtain environmentally friendly weed control cloth; Among them, the starting temperature of the first heating process is 0°C and the target temperature is 20°C, the target temperatures of the second to eighth heating processes are 50°C, 70°C, 90°C, 100°C, 115°C, 130°C and 140°C respectively, the heating rate of the first heating process is 1-2°C / min, the heating rate of the second heating process is 2.5-3°C / min, the heating rate of the third heating process is 1-2°C / min, the heating rate of the fourth heating process is 2.5-3°C / min, the heating rate of the fifth heating process is 1-2°C / min, the heating rate of the sixth heating process is 2.5-3°C / min, the heating rate of the seventh heating process is 1-2°C / min, and the heating rate of the eighth heating process is 2.5-3°C / min.

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