Self-adhesive agricultural mulching film

Abstract

The utility model discloses a self-adhesive agricultural mulching film, which relates to the technical field of agricultural mulching films, and comprises a middle film, two sides of the middle film are fixedly connected with side films, the mulching film is in cohesive connection with ground soil through a cohesive layer at the bottom of a cohesive weed suppression layer, and the design of ensuring the cohesive gradient ensures that the cohesive of a central area is larger. After the sticky protrusions are combined with the soil, the laying efficiency of workers is improved, fixing through U-shaped nails is not needed, physical loss is reduced, the labor intensity of the workers is reduced, the sticky strength of the edges is small, film uncovering is facilitated, the film uncovering speed is increased, and the waste film recycling speed is increased. A plurality of groups of dividing holes are arranged in sequence to realize temperature adjustment and promote plant growth, the directional flow guide grooves adopt the design of V-shaped grooves, namely the design of inclination angles, so that the rainwater diversion efficiency is improved, drainage can be helped, and waterlogging damage to roots can be effectively prevented; and the problem that the mulching film is lifted due to overlarge wind force is effectively prevented.

Description

A self-adhesive agricultural mulch film Technical Field

[0001] This utility model relates to the field of agricultural mulch film technology, specifically to a self-adhesive agricultural mulch film. Background Technology

[0002] Mulch film, also known as ground cover film, is usually transparent or black PE film, but also comes in green and silver. It is used to cover the ground to increase soil temperature, retain soil moisture, maintain soil structure, prevent pests from attacking crops and diseases caused by certain microorganisms, and promote plant growth.

[0003] Traditional mulch film basically requires soil to cover the edges or to be fixed with U-shaped nails, which is time-consuming and labor-intensive. Therefore, this paper designs a self-adhesive agricultural mulch film to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a self-adhesive agricultural mulch film, comprising a middle film, with side films fixedly connected to both sides of the middle film; both the middle film and the side films are biodegradable films. The biodegradable film achieves controllability of degradation by adjusting the proportion of material formula according to the requirements of different crop growth stages and degradation induction periods. Under the action of natural conditions such as microorganisms, oxygen, and light, after fulfilling its functions of heat preservation and weed control for crops, it gradually decomposes into fine powder until it is completely degraded into water and carbon dioxide, thus achieving harmlessness to the farmland environment.

[0005] The upper surface of the middle membrane has dividing holes, the upper surface of the side membrane has embedded directional drainage channels, the upper surface of the side membrane has hexagonal protrusions, the edges of the side membranes have curved surfaces, and the upper surface of the side membranes has mosquito-repellent grooves. The side membranes are positioned on both sides of the middle membrane, and their bottoms are in contact with the soil through an adhesive layer for fixation. Multiple sets of side membranes are provided, allowing for easy replacement of individual damaged side membranes and extending the overall service life. Multiple sets of directional drainage channels guide rainwater runoff quickly. The hexagonal protrusions enhance wind resistance, and their height can be set to a few millimeters. The curved surfaces allow for easy tearing of a corner of the side membrane when damaged, facilitating replacement.

[0006] Furthermore, both the middle and side films are biodegradable membranes, and both are designed with a layered structure. The middle film is white, and the side films are black, connected together by an adhesive. The middle film area is the planting zone and does not affect the growth of plants, while the black film blocks sunlight and inhibits weed growth, allowing for mulching according to planting needs. Both the middle and black films are designed with three layers, each with its own specific function.

[0007] Furthermore, the middle and side membranes are composed, from top to bottom, of an insect-repellent hydrophobic layer, a porous moisture-retaining layer, and a gradient viscous weed-suppressing layer. The structure of the hydrophobic layer can increase the rolling speed of water droplets, reduce the time water accumulates on the membrane surface, and prevent water accumulation from inducing diseases, thus reducing pesticide runoff to a certain extent.

[0008] Furthermore, the insect-repellent and hydrophobic layer has a hydrophobic and directional flow structure, the porous moisture-retaining layer is designed with a porous structure, and the gradient viscous weed-suppressing layer has a viscous gradient distribution structure. The directional flow structure can accelerate drainage, provide a preferential flow path for water droplets, and avoid disorderly diffusion. The trenches are arranged according to the slope direction, usually inclined at 3 to 5 degrees, using gravity to accelerate runoff. In the gradient pore design, the pore size is designed with a small pore size in the upper layer and a large pore size in the lower layer. Under drought conditions, it preferentially absorbs and stores water, forming a water buffer layer to reduce soil moisture evaporation. During the rainy season, it quickly drains excess water to avoid water accumulation under the film and root hypoxia.

[0009] Furthermore, the upper surface of the porous moisture-retaining layer has gradient pores, and an adhesive layer is fixedly connected to the edge of the lower surface of the gradient adhesive weed-suppressing layer. Adhesive protrusions are installed on the lower surface of the adhesive layer. The entire mulch film is adhesively connected to the ground soil through the adhesive layer at the bottom of the adhesive weed-suppressing layer. The design of the adhesive gradient ensures that the central area has greater adhesion and the edge area has less adhesion, making it easy to remove the film.

[0010] Furthermore, the mosquito repellent groove is composed of a waterproof layer and a hydrophobic and breathable membrane.

[0011] Furthermore, the waterproof layer is installed on the inner surface of the mosquito repellent channel, which is designed as an inverted trapezoidal structure that is wider at the top and narrower at the bottom. The outer layer is a waterproof membrane to prevent rainwater from washing away and causing it to fail. The inverted trapezoidal design of the channel guides the mosquito repellent liquid components inside the channel to diffuse upwards, enhancing the mosquito repellent range.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model connects the plastic film to the ground soil through an adhesive layer at the bottom of the adhesive weed suppressing layer. The design of the adhesive gradient ensures that the central area has greater adhesiveness, that is, after the adhesive protrusions combine with the soil, it improves the laying efficiency of personnel without the need for fixing with U-shaped nails, reducing physical labor loss and reducing the labor intensity of personnel. The adhesive strength at the edges is less, making it easier to peel off the film, thereby increasing the speed of film peeling and the speed of waste film recycling.

[0014] 2. In this utility model, multiple sets of segmented holes are arranged in sequence to regulate temperature and promote plant growth. The directional flow channel adopts a V-shaped groove design, that is, an inclined angle design, which improves the rainwater diversion efficiency, helps drainage, and effectively prevents root waterlogging. The hexagonal protrusion structure has wind resistance and effectively prevents the mulch film from being blown up by excessive wind force.

[0015] 3. The embedded design of multiple mosquito repellent slots in this utility model allows mosquito repellent liquid to be added to the inner wall of the slots, releasing mosquito repellent gas, effectively reducing the amount of pesticides used and improving the ability to repel pests. Finally, the design of the curved edge of the side film can improve the time for quick replacement when a single side film is damaged.

[0016] 4. The top hydrophobic surface of this invention, namely the insect-repellent hydrophobic layer, can increase the rolling speed of water droplets and shorten the surface drying time. The functional design of the mosquito-repellent groove can extend the release cycle and reduce the mosquito attachment rate. The directional flow design, with the arrangement of U-shaped grooves with an inclined slope, combined with the surface gradient distribution, increases the water flow rate.

[0017] 5. In this utility model, the gradient pore design of the middle layer makes the upper pore size smaller and the lower pore size larger. That is, the small pores in the upper layer intercept soil particles and prevent pore blockage, while the perforated lower layer maintains high air permeability and promotes root respiration. The pore size gradient enables the switching between water retention in drought and drainage in flood. The bottom layer is a gradient adhesive weed suppressant layer, which can inhibit the penetration of small weeds and prevent the spread of weed roots and stems. Attached Figure Description

[0018] Figure 1 is a front view of this utility model;

[0019] Figure 2 is a structural schematic diagram of point A in Figure 1 of this utility model;

[0020] Figure 3 is a structural schematic diagram of point B in Figure 2 of this utility model;

[0021] Figure 4 is a schematic diagram of the structure of the mosquito repellent groove of this utility model;

[0022] Figure 5 is a cross-sectional view of the gradient hole of this utility model;

[0023] Figure 6 is a schematic diagram of the gradient viscosity weed suppressant of this utility model.

[0024] In the diagram: 1. Middle membrane; 101. Dividing hole; 2. Side membrane; 21. Directional guide channel; 22. Hexagonal protrusion; 23. Curved surface; 24. Mosquito repellent channel; 241. Hydrophobic layer; 242. Hydrophobic and breathable membrane; 201. Insect repellent and hydrophobic layer; 202. Porous moisture-retaining layer; 2021. Gradient pores; 203. Gradient viscous weed-suppressing layer; 2031. Viscous layer; 2032. Viscous protrusion. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0026] Example 1:

[0027] Please refer to Figures 1-6. This utility model provides a technical solution: a self-adhesive agricultural mulch film, including a middle film 1, with side films 2 fixedly connected to both sides of the middle film 1; both the middle film 1 and the side films 2 are biodegradable films. The biodegradable film can be controlled by adjusting the proportion of the material formula according to the requirements of different crop growth stages and degradation induction periods. Under the action of natural conditions such as microorganisms, oxygen, and light, after completing the functions of heat preservation and weeding for crops, it gradually decomposes into fine powder until it is completely degraded into water and carbon dioxide, thus achieving harmlessness to the farmland environment.

[0028] The upper surface of the middle membrane 1 has dividing holes 101, the upper surface of the side membrane 2 has embedded directional flow channels 21, the upper surface of the side membrane 2 has hexagonal protrusions 22, the edges of both sides of the side membrane 2 have curved surfaces 23, and the upper surface of the side membrane 2 has mosquito-repelling grooves 24. The side membranes 2 are located on both sides of the middle membrane 1, and the bottom of both sides of the side membrane 2 are in contact with the soil through an adhesive layer to achieve fixation. There are multiple sets of side membranes 2, so that when damaged, it is easy to replace a single damaged side membrane 2, extending the overall service life. Multiple sets of directional flow channels 21 are provided to guide rainwater runoff quickly. The design of the hexagonal protrusions 22 is to enhance wind resistance, and the protrusion height can be set to a few millimeters. The curved surfaces 23 make it easy to tear open a corner of the side membrane 2 from the curved surface when the side membrane 2 is damaged, facilitating the replacement of the side membrane 2.

[0029] Both the middle membrane 1 and the side membrane 2 are biodegradable membranes. Both are designed with a layered structure: the middle membrane 1 is white, and the side membrane 2 is black. The middle membrane 1 and side membrane 2 are connected together with adhesive. The area under the middle membrane 1 is the planting area and does not affect the growth of the plants. The black membrane blocks sunlight and inhibits weed growth, and mulching is applied according to planting needs. Both the middle membrane 1 and the black membrane are designed with three layers, each with its own specific function.

[0030] The middle membrane 1 and the side membrane 2 are composed, from top to bottom, an insect-repellent hydrophobic layer 201, a porous moisture-retaining layer 202, and a gradient adhesive weed-suppressing layer 203. The structure of the hydrophobic layer can increase the rolling speed of water droplets, reduce the time water accumulates on the membrane surface, and prevent water accumulation from inducing diseases, which can reduce pesticide loss to a certain extent.

[0031] The insect-repellent and hydrophobic layer 201 features a hydrophobic and directional flow structure, the porous moisture-retaining layer 202 is designed with a porous structure, and the gradient viscous weed-suppressing layer 203 has a viscous gradient distribution structure. The directional flow structure accelerates drainage, provides a preferential flow path for water droplets, and avoids disorderly diffusion. The trenches are arranged along the slope direction, typically inclined at 3 to 5 degrees, utilizing gravity to accelerate runoff. In the gradient pore design, the pore size is designed with small pores in the upper layer and large pores in the lower layer. Under drought conditions, this preferentially absorbs and stores water, forming a water buffer layer to reduce soil moisture evaporation. During the rainy season, excess water is quickly discharged, preventing water accumulation under the film and root hypoxia.

[0032] The upper surface of the porous moisture-retaining layer 202 has gradient pores, and an adhesive layer is fixedly connected to the edge of the lower surface of the gradient adhesive weed-suppressing layer 203. Adhesive protrusions are installed on the lower surface of the adhesive layer. The entire mulch film is adhesively connected to the ground soil through the adhesive layer at the bottom of the adhesive weed-suppressing layer. The adhesive gradient design ensures that the central area has greater adhesiveness and the edge area has less adhesiveness, making it easy to remove the film.

[0033] The mosquito channel consists of a waterproof layer 241 and a hydrophobic and breathable membrane 242.

[0034] A waterproof layer 241 is installed on the inner surface of the mosquito repellent channel 24, which is designed as an inverted trapezoidal structure that is wider at the top and narrower at the bottom. The outer layer is a waterproof membrane to prevent rainwater from washing away and causing it to fail. The channel body is designed as an inverted trapezoid to guide the mosquito repellent liquid components inside the mosquito repellent channel 24 to diffuse upwards, thereby enhancing the mosquito repellent range.

[0035] Working principle:

[0036] First, both the middle film 1 and the side film 2 are biodegradable films. By adjusting the material ratio of the biodegradable films, the growth cycle and degradation induction period of different crops can be precisely matched. After fulfilling functions such as moisture retention and weed suppression, the mulch film gradually mineralizes into carbon dioxide and water under the action of microorganisms and light, and has an effective degradation ability, effectively solving the "white pollution" problem caused by the residue of traditional PE mulch film.

[0037] Multiple sets of segmented holes 101 are arranged sequentially to regulate temperature and promote plant growth. The directional drainage channel 21 adopts a V-shaped groove design, i.e., an inclined angle design, which improves rainwater diversion efficiency, helps drainage, and effectively prevents root waterlogging. The hexagonal protrusions 22 have wind resistance, effectively preventing the mulch film from being blown up by excessive wind. The embedded design of multiple mosquito repellent channels 24 allows mosquito repellent liquid to be added to the inner wall of the channels 24, releasing mosquito repellent gas, effectively reducing pesticide use and improving the ability to repel pests. Finally, the design of the edge of the side film 2 with a raised surface can improve the quick replacement operation when a single side film 2 is damaged.

[0038] The white film planting area has higher light transmittance, maintaining a balanced daily average temperature and promoting seedling growth compared to the all-black film. The black film, however, has lower light transmittance in weed-suppressing areas, inhibiting weed growth on both sides of the crop and reducing herbicide usage. The junction of the white and black films forms a short transition zone, establishing a lateral temperature gradient through differences in thermal radiation, promoting air convection within the soil, and reducing the risk of root burn from high temperatures.

[0039] The top hydrophobic surface, namely the insect-repellent hydrophobic layer 201, increases the rolling speed of water droplets and shortens the surface drying time, while the functional design of the mosquito-repellent groove 24 extends the release cycle and reduces the mosquito attachment rate. The directional flow design, with its U-shaped groove slope arrangement combined with a surface gradient distribution, increases the water flow rate. The gradient pore design of the middle layer results in smaller pores in the upper layer and larger pores in the lower layer. The smaller pores in the upper layer intercept soil particles, preventing pore blockage, while the perforated lower layer maintains high air permeability, promoting root respiration. This pore gradient allows for switching between water retention during drought and drainage during floods. The bottom layer is a gradient adhesive weed-suppressing layer 203, which inhibits the penetration of small weeds and prevents the spread of weed roots.

[0040] The entire mulch film is bonded to the soil through an adhesive layer at the bottom of the adhesive weed-suppressing layer. The design of the adhesive gradient ensures that the central area has higher adhesiveness and the edge area has lower adhesiveness, making it easier to remove the film. After the adhesive protrusions combine with the soil, the laying efficiency is improved, eliminating the need for U-shaped nails for fixation, reducing physical exertion and labor intensity. The low-adhesion edge design increases the speed of film removal and accelerates the recycling of waste film.

[0041] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A self-adhesive agricultural mulch film, comprising a middle film (1), characterized in that: The middle membrane (1) is fixedly connected to the side membranes (2) on both sides; the upper surface of the middle membrane (1) is provided with a dividing hole (101); the upper surface of the side membrane (2) is embedded with a directional flow channel (21); the upper surface of the side membrane (2) is provided with a hexagonal protrusion (22); the edges on both sides of the side membrane (2) are provided with curved curved surfaces (23); and the upper surface of the side membrane (2) is provided with a mosquito repellent groove (24).

2. The self-adhesive agricultural mulch film according to claim 1, characterized in that: Both the middle membrane (1) and the side membrane (2) are biodegradable membranes. Both the middle membrane (1) and the side membrane (2) are designed with a layered structure. The middle membrane (1) is a white membrane and the side membrane (2) is a black membrane. The middle membrane (1) and the side membrane (2) are connected together by adhesive.

3. The self-adhesive agricultural mulch film according to claim 2, characterized in that: The middle membrane (1) and the side membrane (2) are composed of an insect-repellent hydrophobic layer (201), a porous moisture-retaining layer (202), and a gradient viscous weed-suppressing layer (203) from top to bottom.

4. The self-adhesive agricultural mulch film according to claim 3, characterized in that: The insect-repellent hydrophobic layer (201) has a hydrophobic and directional flow structure, the porous moisturizing layer (202) is designed as a porous structure, and the gradient viscous weed-suppressing layer (203) has a viscous gradient distribution structure.

5. The self-adhesive agricultural mulch film according to claim 4, characterized in that: The upper surface of the porous moisturizing layer (202) is provided with gradient holes (2021), and an adhesive layer (2031) is fixedly connected to the edge of the lower surface of the gradient adhesive weed suppressing layer (203). Adhesive protrusions (2032) are installed on the lower surface of the adhesive layer (2031).

6. The self-adhesive agricultural mulch film according to claim 1, characterized in that: The mosquito repellent groove (24) consists of a waterproof layer (241) and a hydrophobic and breathable membrane (242).

7. A self-adhesive agricultural mulch film according to claim 6, characterized in that: The waterproof layer (241) is installed on the inner surface of the mosquito repellent groove (24), which is designed as an inverted trapezoidal structure that is wider at the top and narrower at the bottom.

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