Environment-friendly raincoat made of biodegradable material and preparation process of environment-friendly raincoat
By introducing a fan casing, internal curved blocks and a heat dissipation mesh structure into the raincoat, combined with a hydrophobic plate and a fluorescent warning tape, the problem of poor heat dissipation and environmental pollution of the raincoat in a high temperature environment is solved, biodegradation and rapid storage are achieved, and the convenience and safety of the user are improved.
Patent Information
- Application Number
- CN202510771485.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-09-09
AI Technical Summary
Existing raincoats provide a poor wearing experience, poor freedom of movement, and use of non-degradable materials that cause environmental pollution. Traditional raincoats have poor heat dissipation effects in high temperature environments, and rainwater enters the inside of the raincoat, affecting the user's freedom of movement.
A raincoat made of biodegradable materials was designed. It uses a fan casing, internal curved blocks and a heat dissipation mesh structure for ventilation and heat dissipation. A hydrophobic plate and a fluorescent warning tape are installed. A lighting lamp is embedded in the brim of the raincoat. It uses a strip and block structure for quick storage. The biodegradable material is combined with natural mineral phosphor through a hot pressing composite process.
It improves the user experience of raincoats in high temperature environments, prevents rainwater from entering, enhances visibility and safety at night, enables quick storage, and can be completely decomposed after disposal without environmental pollution, thereby improving the convenience and safety of users.
Smart Images
Figure CN120604886A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of raincoats, in particular to an environment-friendly raincoat made of biodegradable materials and a preparation process thereof. Background Art
[0002] Many workers still need to work outdoors on rainy days. Two types of raincoats are commonly used. One is a raincoat designed to protect workers from the rain while cycling. These raincoats are too long, so they easily touch the ground when workers squat and stand, making them inconvenient to walk. The other type is a separate raincoat with a top and bottom that is inconvenient to wear. Workers often get soaked by the rain before they even put on their raincoats. Furthermore, the long and loose sleeves and trouser legs of raincoats reduce work efficiency. While working in a raincoat, rainwater reduces friction between hands and tools, making it easy for tools to slip out of the hands. Traditional raincoats are often made of non-degradable materials. When discarded in landfills, these non-degradable raincoats increase soil pollution. When burned, they produce toxic gases, polluting the air.
[0003] Generally, when a raincoat is used, when the external ambient temperature is high, the internal temperature of the raincoat will also become higher accordingly, resulting in a poor user experience. In addition, rainwater may enter the raincoat and adhere to the user's body surface, reducing the user's freedom of movement. Summary of the Invention
[0004] Based on the technical problems that existing degradable raincoats have poor wearing experience and poor freedom of movement, the present invention proposes an environmentally friendly raincoat made of biodegradable materials and a preparation process thereof.
[0005] The present invention provides an environmentally friendly raincoat made of biodegradable materials and a preparation process thereof, comprising a raincoat body, characterized in that a fan housing is installed near the lower edge of the rear surface of the outer surface of the raincoat body, a fan housing is provided inside the fan housing, a water retaining block is installed at the center of the lower surface of the fan housing, an air inlet is opened and installed at the center of the lower surface of the fan housing, and a water outlet block is fixedly connected to the upper end of the air inlet;
[0006] The inner surface of the raincoat body is fixedly connected with an inner curved block relative to the position of the fan housing, the upper surface of the inner curved block is annularly provided with an air outlet net, and the center position of the upper surface of the inner curved block is located inside the air outlet net and is rotatably provided with a rotating handle.
[0007] Preferably, the upper end of the raincoat body is connected to a rain cap, and a hydrophobic plate is fixedly connected to the front edge of the rain cap.
[0008] Through the above technical solution, a rain cap is provided at the upper end of the raincoat body, and a hydrophobic plate is installed at the front end of the rain cap. The upper surface of the hydrophobic plate is a curved surface, which is higher in the middle and lower on both sides. There is also a horizontal hydrophobic plate at the front end. When rainwater falls on the surface of the rain cap, it will automatically move to both sides to achieve a hydrophobic effect, prevent surface rainwater from moving forward and blocking the user's line of sight, thereby improving safety.
[0009] Preferably, a warning strip is installed on the upper end of the outer rear surface of the raincoat body.
[0010] This technical solution incorporates fluorescent warning strips at intervals along the outer surface of the raincoat, with serrated edges to prevent peeling. The warning strips feature a textured surface that enhances diffuse reflection, ensuring nighttime visibility. The strips also degrade in sync with the raincoat itself, completely disintegrating upon disposal without polluting the environment. This design balances safety and warning functionality with material compatibility.
[0011] Preferably, a heat dissipation net is provided on the left and right sides near the lower edge of the front surface of the raincoat body, a water retaining strip is fixedly installed at the upper edge of the heat dissipation net, a lower insert strip is fixedly connected to the lower edge of the rear surface of the raincoat body, an insert plate is fixedly connected to the end of the lower insert strip, a pressure block is fixedly connected to the left and right sides of the front surface of the insert plate, a limiting rod is installed on the inner side of the pressure block at the center position of the front surface of the insert plate, and a rear insert strip is fixedly connected to the lower end of the warning strip on the outer rear surface of the raincoat body.
[0012] The above technical solution provides a heat dissipation net at the lower end of the front surface of the raincoat. This net combines ventilation and heat dissipation, achieving optimal comfort for the user's body and enhancing the user experience. Plug strips and blocks are symmetrically positioned on the outer side of the raincoat's hem. The strips have transverse, concave-convex anti-slip grooves on their surfaces, while the blocks have dovetail grooves on their inner sides that engage with the strips. When stored, the raincoat is folded and quickly locked together by the strips and blocks. The strips and blocks can be removed from the strip and block straps, allowing them to be removed for subsequent use after the raincoat is discarded.
[0013] Preferably, the front surface of the rain cap is located at the upper end of the hydrophobic plate and is fixedly connected to a top block, a battery shell is fixedly installed inside the top block, a movable fixed block is slidably provided on the side upper surface of the top block, a wire housing is installed at the center position of the upper surface of the battery shell, the upper end of the wire housing is fixedly connected to the lighting lamp bottom block, a lighting lamp protective shell is provided at the center position of the upper surface of the lighting lamp bottom block, a lighting lamp is fixedly installed inside the lighting lamp protective shell, and a connecting block is fixedly connected between the outer circumferential surface of the lighting lamp protective shell and the upper surface of the movable fixed block.
[0014] Through the above technical solution, a lighting lamp is embedded in the front end of the raincoat brim, which is convenient for users to use at night. The road ahead can be illuminated without holding the lighting device, thereby improving the convenience of using the device.
[0015] Preferably, the outer left surface of the raincoat body is fixedly connected with a side insert strip, and the outer right surface of the raincoat body is fixedly connected with a side insert block belt.
[0016] Through the above technical solution, a side storage structure is set on the side of the raincoat body, and the insert strip and insert block structure are also used to achieve the best storage effect together with the storage structure at the lower end and rear surface of the raincoat, thereby reducing the volume of the raincoat after storage and preventing it from taking up too much space.
[0017] Preferably, a middle baffle is sewn on the center line of the front surface of the raincoat body, and buttons are respectively installed through the surface of the middle baffle.
[0018] The above technical solution provides a circular snap button on the front of the raincoat, consisting of a base and a rotating cover, which is fixed to the surface of the raincoat through heat-pressing welding. The outer edge of the button is designed with anti-slip corrugations, and when pressed, the rotating cover engages and locks with the base.
[0019] Preferably, an insert plate is fixedly installed at the end of the side insert block belt, a pressure plate is provided at the rear end edge of the upper surface of the insert block plate, and a fixing block is fixedly connected to the front surface of the insert block plate.
[0020] Through the above technical solution, there is a disassembly structure at the end of the insert strip and the insert block. After the service life of the raincoat expires, the insert strip and the insert block are not degradable structures and have a long service life, so they can be used subsequently.
[0021] Preferably, a protrusion is fixedly connected to the edge of the rear surface of the pressure plate, and a fixing tooth is provided on the lower surface of the pressure plate near the front end edge and located on the upper wall inside the inserting plate.
[0022] Through the above technical solution, a quick disassembly device is provided in the disassembly structure of the insert strip and the insert block, and a fixing tooth is provided in the quick disassembly device to fix the insert strip belt and the insert block belt, thereby reducing the use of mechanical equipment and preventing equipment damage caused by rain.
[0023] Preferably, an environmentally friendly raincoat made of biodegradable material and a method for preparing the same include the following steps;
[0024] Step 1: The fan casing is fixedly installed at the lower end edge of the rear surface of the raincoat body, and a filter is provided on the outer lower surface of the fan casing. At the same time, the fan casing is provided at the inner upper end of the fan casing, and the air inlet is installed at the inner lower end of the fan casing. There is a certain distance between the lower end of the air inlet and the inner lower surface of the fan casing, and the water outlet block is fixedly installed at the upper end of the air inlet. The water retaining block is provided at the upper end of the water outlet block and at the center of the lower surface of the fan casing, and the external air is sucked into the raincoat through the motor;
[0025] Step 2: Install the inner curved block and the fan housing relative to each other on the inner surface of the raincoat body, then open the air outlet net on the upper surface of the inner curved block, and rotate the rotating handle inside the air outlet net at the center of the upper surface of the inner curved block, so that the external air is output to the inside of the raincoat through the motor;
[0026] Step 3: The heat dissipation net is set on the left and right sides of the front surface of the raincoat body, and the upper edge of the heat dissipation net is fixedly connected to the water retaining bar. External air is sucked into the raincoat through the fan housing and then discharged from the raincoat through the heat dissipation net.
[0027] The beneficial effects of the present invention are:
[0028] 1. A ventilation system is set up inside the raincoat. External air is sucked into the raincoat through the fan inside the fan casing. At the same time, a drainage structure is set up in the fan casing to prevent external rainwater from entering the fan casing and discharge it out of the raincoat through the internal water outlet of the internal water outlet block. A water retaining block is set up inside the fan casing to further filter rainwater and air, so that only air can enter the raincoat to promote heat dissipation. When the external ambient temperature is high, the user's experience is improved. In addition, the structure is located inside the raincoat. An internal curved block is set to prevent the user's clothes from accidentally touching it, reducing the user's feeling of foreign objects on the body surface.
[0029] 2. Fluorescent warning strips are placed at intervals on the outer surface of the raincoat. These strips are injection-molded from a biodegradable PLA substrate and natural mineral phosphors. They are embedded into the raincoat's PHBV film through a hot-pressing lamination process, and their edges feature a serrated, interlocking structure to prevent peeling. The strips' surface features a textured surface that enhances diffuse reflection and provides excellent nighttime visibility. Their degradation performance is synchronized with the raincoat's main structure, allowing them to completely decompose upon disposal without polluting the environment. This design balances safety and warning functionality with the ecological compatibility of all materials.
[0030] 3. Inserts and blocks are symmetrically positioned on the outside of the raincoat's hem. The inserts have transverse, concave-convex anti-slip grooves, and the inside of the blocks have dovetail grooves that engage with the inserts. When the raincoat is folded for storage, the inserts and blocks quickly snap together and lock securely. The inserts and blocks are removable from the insert and block straps, allowing them to be removed after the raincoat is discarded for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 A schematic diagram of an environmentally friendly raincoat made of biodegradable materials and its preparation process proposed by the present invention;
[0032] Figure 2 A top view of an environmentally friendly raincoat made of biodegradable material and its preparation process proposed by the present invention;
[0033] Figure 3 A schematic diagram of the side insert belt structure of an environmentally friendly raincoat made of biodegradable materials and its preparation process proposed by the present invention;
[0034] Figure 4 A schematic diagram of the lighting structure of an environmentally friendly raincoat made of biodegradable materials and its preparation process proposed by the present invention;
[0035] Figure 5 A schematic diagram of the internal structure of the insert plate of an environmentally friendly raincoat made of biodegradable materials and its preparation process proposed by the present invention;
[0036] Figure 6 A schematic diagram of the ventilation structure of an environmentally friendly raincoat made of biodegradable materials and its preparation process proposed by the present invention;
[0037] Figure 7 This is a schematic diagram of the internal structure of the fan casing of an environmentally friendly raincoat made of biodegradable material and its preparation process proposed by the present invention.
[0038] In the figure: 1. Raincoat body; 2. Rain cap; 3. Hydrophobic plate; 4. Middle baffle; 5. Button; 6. Water retaining strip; 7. Heat dissipation net; 8. Side insert strip; 9. Insert plate; 10. Pressing block; 11. Limiting rod; 12. Lower insert strip; 13. Rear insert strip; 14. Warning strip; 15. Side insert strip; 16. Fan casing; 17. Pressing plate; 18. Insert plate; 19. Fixed block; 20. Top block; 21. Mobile fixed block; 22. Battery casing; 23. Wire casing; 24. Lighting bottom block; 25. Lighting; 26. Lighting protective casing; 27. Connecting block; 28. Fixed tooth; 29. Protrusion; 30. Internal curved surface block; 31. Air outlet net; 32. Rotating handle; 33. Water retaining block; 34. Water outlet block; 35. Air inlet; 36. Fan casing. DETAILED DESCRIPTION
[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0040] Reference Figure 1-7 An environmentally friendly raincoat made of biodegradable materials and a preparation process thereof, comprising a raincoat body 1, characterized in that a fan housing 16 is installed near the lower edge of the rear surface of the outer surface of the raincoat body 1, a fan housing 36 is provided inside the fan housing 16, a water retaining block 33 is installed at the center position of the lower surface of the fan housing 36, an air inlet 35 is opened and installed at the center position of the lower surface of the fan housing 16, and a water outlet block 34 is fixedly connected to the upper end of the air inlet 35;
[0041] The inner surface of the raincoat body 1 is fixedly connected to an inner curved block 30 relative to the fan housing 16. An air outlet net 31 is provided in an annular shape on the upper surface of the inner curved block 30. A rotating handle 32 is provided at the center of the upper surface of the inner curved block 30 and is located inside the air outlet net 31.
[0042] Furthermore, the upper end of the raincoat body 1 is connected to a rain cap 2 , and a hydrophobic plate 3 is fixedly connected to the front edge of the rain cap 2 .
[0043] A rain cap is provided at the upper end of the raincoat body, and a hydrophobic plate is installed at the front end of the rain cap. The upper surface of the hydrophobic plate is curved, which is higher in the middle and lower on both sides. There is also a horizontal hydrophobic plate at the front end. When rainwater falls on the surface of the rain cap, it will automatically move to both sides to achieve a hydrophobic effect, prevent surface rainwater from moving forward and blocking the user's line of sight, thereby improving safety.
[0044] Furthermore, a warning strip 14 is installed on the upper end of the outer rear surface of the raincoat body 1 .
[0045] Fluorescent warning strips are spaced apart on the outer surface of the raincoat, with serrated edges to prevent peeling. A concave-convex texture enhances diffuse reflection, ensuring nighttime visibility. The raincoat's degradation performance is synchronized with the original, allowing it to completely decompose upon disposal without polluting the environment. This design balances safety and warning functionality with material compatibility.
[0046] Furthermore, a heat dissipation net 7 is provided on the left and right sides near the lower edge of the front surface of the raincoat body 1, and a water retaining strip 6 is fixedly installed at the upper edge of the heat dissipation net 7. A lower insert strip 12 is fixedly connected to the lower edge of the rear surface of the raincoat body 1, and an insert plate 9 is fixedly connected to the end of the lower insert strip 12. A pressure block 10 is fixedly connected to the left and right sides of the front surface of the insert plate 9. A limiting rod 11 is installed on the inner side of the pressure block 10 at the center position of the front surface of the insert plate 9, and a rear insert strip 13 is fixedly connected to the lower end of the warning strip 14 on the outer rear surface of the raincoat body 1.
[0047] A heat dissipation net is installed at the lower front end of the raincoat, combining ventilation and heat dissipation to achieve optimal comfort for the user's body and enhance the user experience. Plug strips and blocks are symmetrically positioned on the outer side of the raincoat's hem. The strips feature transverse, concave-convex anti-slip grooves, while the blocks have dovetail grooves on their inner sides to engage with the strips. When stored, the raincoat is folded and quickly locked together by the strips and blocks. The strips and blocks can be removed from the strip and block straps, allowing for subsequent use after the raincoat is scrapped.
[0048] Furthermore, the front surface of the rain cap 2 is located at the upper end of the hydrophobic plate 3 and is fixedly connected to a top block 20, a battery shell 22 is fixedly installed inside the top block 20, a movable fixed block 21 is slidably provided on the side upper surface of the top block 20, a wire housing 23 is installed at the center position of the upper surface of the battery shell 22, the upper end of the wire housing 23 is fixedly connected to a lighting lamp bottom block 24, a lighting lamp protective shell 26 is provided at the center position of the upper surface of the lighting lamp bottom block 24, a lighting lamp 25 is fixedly installed inside the lighting lamp protective shell 26, and a connecting block 27 is fixedly connected between the outer circumferential surface of the lighting lamp protective shell 26 and the upper surface of the movable fixed block 21.
[0049] A lighting lamp is embedded in the front end of the raincoat brim, which is convenient for users to use at night. The road ahead can be illuminated without holding the lighting device, which improves the convenience of using the device.
[0050] Furthermore, a side insert strip 8 is fixedly connected to the outer left surface of the raincoat body 1 , and a side insert block strip 15 is fixedly connected to the outer right surface of the raincoat body 1 .
[0051] A side storage structure is set on the side of the raincoat body, which also uses an insert strip and block structure. Together with the storage structure at the lower end and rear surface of the raincoat, it achieves the best storage effect, reduces the volume of the raincoat after storage, and prevents it from taking up too much space.
[0052] Furthermore, a middle retaining strip 4 is sewn on the center line of the front surface of the raincoat body 1 , and buttons 5 are respectively installed through the surface of the middle retaining strip 4 .
[0053] The front of the raincoat features a circular snap button, consisting of a base and a rotating cover, which is secured to the surface of the raincoat via heat-compression welding. The outer edge of the button features anti-slip ripples, and when pressed, the rotating cover engages and locks with the base.
[0054] Furthermore, an insert plate 18 is fixedly installed at the end of the side insert block belt 15 , a pressure plate 17 is provided at the rear end edge of the upper surface of the insert block plate 18 , and a fixing block 19 is fixedly connected to the front surface of the insert block plate 18 .
[0055] There are disassembly structures at the ends of the insert strips and the insert block strips. After the service life of the raincoat expires, the insert strips and the insert block are not degradable structures and have a long service life, so they can be used subsequently.
[0056] Furthermore, a protrusion 29 is fixedly connected to the edge of the rear surface of the pressure plate 17 , and a fixing tooth 28 is provided on the upper wall of the insert plate 18 near the front edge of the lower surface of the pressure plate 17 .
[0057] A quick disassembly device is provided in the disassembly structure of the insert strip and the insert block, and a fixing tooth is provided in the quick disassembly device to fix the insert strip and the insert block, thereby reducing the use of mechanical equipment and preventing equipment damage caused by rain.
[0058] Working principle:
[0059] Step 1: The fan casing 16 is fixedly installed at the lower edge of the rear surface of the raincoat body 1, and a filter is provided on the outer lower surface of the fan casing 16. At the same time, a fan housing 36 is provided on the inner upper end of the fan casing 16, and an air inlet 35 is installed on the inner lower end of the fan casing 16. The lower end of the air inlet 35 is at a certain distance from the inner lower surface of the fan casing 16, and a water outlet block 34 is fixedly installed on the upper end of the air inlet 35. A water retaining block 33 is provided at the upper end of the water outlet block 34 and at the center of the lower surface of the fan housing 36. External air is sucked into the raincoat through the motor;
[0060] Step 2: Install the inner curved block 30 and the fan housing 16 on the inner surface of the raincoat body 1. Then, an air outlet net 31 is opened on the upper surface of the inner curved block 30. The inner part of the air outlet net 31 is located at the center of the upper surface of the inner curved block 30 and a rotating handle 32 is rotatably set. The external air is output to the inside of the raincoat through the motor.
[0061] Step 3: Set a heat dissipation net 7 on the left and right sides of the front surface of the raincoat body 1, and the upper edge of the heat dissipation net 7 is fixedly connected to the water retaining bar 6. The external air is sucked into the raincoat through the fan housing 16 and then discharged from the raincoat through the heat dissipation net 7.
[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.
Claims
1. An environmentally friendly raincoat made of biodegradable material, comprising a raincoat body (1), characterized in that: A fan housing (16) is installed on the rear surface of the outer surface of the raincoat body (1) near the lower end edge, a fan housing (36) is provided inside the fan housing (16), a water retaining block (33) is installed at the center position of the lower surface of the fan housing (36), an air inlet (35) is opened and installed at the center position of the lower surface of the fan housing (16), and a water outlet block (34) is fixedly connected to the upper end of the air inlet (35); The inner surface of the raincoat body (1) is fixedly connected to an inner curved surface block (30) relative to the fan housing (16); an air outlet net (31) is provided in an annular shape on the upper surface of the inner curved surface block (30); a rotating handle (32) is provided at the center of the upper surface of the inner curved surface block (30) and is located inside the air outlet net (31).
2. The environmentally friendly raincoat made of biodegradable material according to claim 1, characterized in that: The upper end of the raincoat body (1) is connected to a rain cap (2), and a hydrophobic plate (3) is fixedly connected to the front edge of the rain cap (2).
3. The environmentally friendly raincoat made of biodegradable material according to claim 2, characterized in that: A warning strip (14) is installed on the upper end of the outer rear surface of the raincoat body (1).
4. The environmentally friendly raincoat made of biodegradable material according to claim 3, characterized in that: The front surface of the raincoat body (1) is provided with heat dissipation nets (7) on both sides near the lower edge, a water retaining strip (6) is fixedly installed at the upper edge of the heat dissipation net (7), a lower inserting strip (12) is fixedly connected to the lower edge of the rear surface of the raincoat body (1), an inserting plate (9) is fixedly connected to the end of the lower inserting strip (12), a pressure block (10) is fixedly connected to the left and right sides of the front surface of the inserting plate (9), a limiting rod (11) is installed at the center position of the front surface of the inserting plate (9) inside the pressure block (10), and a rear inserting strip (13) is fixedly connected to the lower end of the warning strip (14) on the outer rear surface of the raincoat body (1).
5. The environmentally friendly raincoat made of biodegradable material according to claim 4, characterized in that: The front surface of the rain cap (2) is located at the upper end of the hydrophobic plate (3) and is fixedly connected to a top block (20); a battery shell (22) is fixedly installed inside the top block (20); a movable fixed block (21) is slidably provided on the side upper surface of the top block (20); a wire housing (23) is installed at the center position of the upper surface of the battery shell (22); the upper end of the wire housing (23) is fixedly connected to a lighting bottom block (24); a lighting lamp protection shell (26) is provided at the center position of the upper surface of the lighting bottom block (24); a lighting lamp (25) is fixedly installed inside the lighting lamp protection shell (26); and a connecting block (27) is fixedly connected between the outer circumferential surface of the lighting lamp protection shell (26) and the upper surface of the movable fixed block (21).
6. The environmentally friendly raincoat made of biodegradable material according to claim 5, characterized in that: The outer left surface of the raincoat body (1) is fixedly connected with a side insert strip (8), and the outer right surface of the raincoat body (1) is fixedly connected with a side insert block belt (15).
7. The environmentally friendly raincoat made of biodegradable material according to claim 1, characterized in that: A middle retaining strip (4) is sewn at the center line of the front surface of the raincoat body (1), and buttons (5) are respectively installed through the surface of the middle retaining strip (4).
8. The environmentally friendly raincoat made of biodegradable material according to claim 7, characterized in that: An insert plate (18) is fixedly mounted on the end of the side insert block belt (15), a pressure plate (17) is provided at the rear end edge of the upper surface of the insert block plate (18), and a fixing block (19) is fixedly connected to the front surface of the insert block plate (18).
9. The environmentally friendly raincoat made of biodegradable material according to claim 8, characterized in that: A protrusion (29) is fixedly connected to the edge of the rear surface of the pressure plate (17), and a fixing tooth (28) is provided on the lower surface of the pressure plate (17) near the front end edge and located on the upper wall inside the insert plate (18).
10. The environmentally friendly raincoat made of biodegradable material and its preparation process according to any one of claims 1 to 9, characterized in that: The following steps are included: Step 1: The fan housing (16) is fixedly installed at the lower edge of the rear surface of the raincoat body (1), and a filter is provided on the outer lower surface of the fan housing (16), and the fan housing (36) is provided on the inner upper end of the fan housing (16), and the air inlet (35) is installed on the inner lower end of the fan housing (16), and a certain distance is present between the lower end of the air inlet (35) and the inner lower surface of the fan housing (16), and the water outlet block (34) is fixedly installed on the upper end of the air inlet (35), and the water retaining block (33) is provided at the upper end of the water outlet block (34) and at the center of the lower surface of the fan housing (36), and the external air is sucked into the raincoat through the motor; Step 2: The inner curved block (30) and the fan housing (16) are mounted on the inner surface of the raincoat body (1), and then the air outlet net (31) is opened on the upper surface of the inner curved block (30). The interior of the air outlet net (31) is located at the center of the upper surface of the inner curved block (30), and the rotating handle (32) is rotatably set, and the external air is output to the inside of the raincoat through the motor; Step 3: The heat dissipation net (7) is arranged on the left and right sides of the front surface of the raincoat body (1), and the upper edge of the heat dissipation net (7) is fixedly connected to the water retaining strip (6), and the external air is sucked into the raincoat through the fan housing (16) and then discharged from the raincoat through the heat dissipation net (7).