Teflon film breathable fabric and preparation method thereof

Abstract

The invention discloses a Teflon film breathable fabric and a preparation method thereof, and relates to the technical field of fabrics, the Teflon film breathable fabric comprises a surface layer, an inner layer and a filling layer located between the surface layer and the inner layer, the filling layer is a cotton fiber cloth layer, the surface layer comprises a Teflon coating layer and a first fiber layer, the first fiber layer is polyester fibers, and the Teflon coating layer is made of polyester fibers. The inner layer comprises a second fiber layer and a skin-friendly layer, the second fiber layer is made of silver ion antibacterial fibers, the skin-friendly layer is of a net structure provided with through holes in an array mode, the skin-friendly layer is made of knitted fabric, the Teflon coating layer is sprayed to the outer side of the first fiber layer, and the hole diameter of the through holes in the skin-friendly layer is 0.4-1 mm. The second fiber layer is made of silver ion antibacterial fibers, so that the fabric can effectively kill various bacteria and prevent and treat various diseases, and the Teflon coating layer can enable the fabric to have the characteristics of high temperature resistance, static resistance and the like.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, in particular to a Teflon film breathable fabric and a preparation method thereof. Background Art

[0002] Breathable fabric is a new type of textile fabric, which is composed of a composite of polymer waterproof and breathable materials and cloth. It is widely used in outdoor clothing, mountaineering clothing, windbreakers, raincoats, shoes, hats and gloves, cold-proof jackets, sporting goods, medical equipment, etc., and is gradually being used in fashion clothing.

[0003] In the prior art, during the composite process of certain fabrics, it is necessary to spot-coat the fabrics to facilitate filling of thermal insulation materials such as cotton between the gaps, thereby facilitating the subsequent production of thermal insulation clothing. The spot glue position easily deviates from the predetermined position, which will affect the composite accuracy of the fabrics and cause the subsequent processes to be unable to proceed normally. Summary of the invention

[0004] The purpose of the present invention is to provide a Teflon film breathable fabric and a preparation method thereof to solve the deficiencies in the above-mentioned prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: the Teflon film breathable fabric comprises a surface layer, an inner layer and a filling layer located between the surface layer and the inner layer, the filling layer is a cotton fiber cloth layer, the surface layer comprises a Teflon coating layer and a first fiber layer, the first fiber layer is polyester fiber, the inner layer comprises a second fiber layer and a skin-friendly layer, the material of the second fiber layer is silver ion antibacterial fiber, the skin-friendly layer is a mesh structure with an array of through holes, and the skin-friendly layer is a knitted fabric.

[0006] Furthermore, the Teflon coating layer is sprayed on the outer side of the first fiber layer.

[0007] Furthermore, the through holes on the skin-friendly layer have a diameter of 0.4-1 mm.

[0008] The present invention also provides a method for preparing a Teflon film breathable fabric, comprising the following steps:

[0009] S1. First, polyester fiber, silver ion antibacterial fiber and knitted fabric are knitted into a first fiber layer, a second fiber layer and a skin-friendly layer respectively by a knitting machine;

[0010] S2, then attaching the Teflon coating layer to the outside of the first fiber layer through a fabric laminating machine, and then attaching the second fiber layer to the outer layer of the skin-friendly layer through a fabric laminating machine;

[0011] S3. Finally, the surface layer, the filling layer and the inner layer are combined into a Teflon film breathable fabric by knitting or gluing.

[0012] Furthermore, the fabric laminating machine includes a machine body, a transmission component, a linkage component and a trigger component, a winding roller intermittently rotating in the machine body, a glue box is provided on the top of the machine body, a glue coating box is vertically slidably connected to the machine body, a plurality of glue coating holes are provided on the glue coating box, the glue coating box has a first station abutting against the fabric in its downward sliding stroke, a glue scraping box is horizontally slidably connected to the glue coating box, and the glue scraping box has a second station abutting against the glue box in its upward sliding stroke, the transmission component is driven by the rotation of the winding roller to make the glue box slide downward to the first station, when the glue coating box moves down to the first station, the linkage component is used to make the glue scraping box slide back and forth horizontally, and when the glue scraping box moves up to the second station, the trigger component is used to make the glue box fill the glue scraping box with glue.

[0013] Furthermore, the transmission assembly includes an incomplete gear and a gear body meshing with the incomplete gear, the incomplete gear and the gear body are rotatably connected on one side of the machine body, a synchronous wheel is coaxially arranged on one end of the winding roller and the gear body, a synchronous belt is commonly connected to the two synchronous wheels for transmission, a connecting column is fixedly connected to the other end of the gear body, a rocker arm is rotatably sleeved on the connecting column, a second slider is fixedly connected to one side of the glue coating box, and the other end of the rocker arm is rotatably connected to the second slider.

[0014] Furthermore, a slide groove is vertically provided in the body, a limit rod is vertically provided in the slide groove, and the second sliding block is vertically slidably sleeved on the limit rod.

[0015] Furthermore, the linkage assembly includes a first slider, a rotating rod and a guide rod. A connecting block is provided on one side of the glue scraping box. The rotating rod is coaxially fixedly connected to one end of the incomplete gear. The rotating rod is provided with two spiral grooves connected end to end. The first slider is horizontally slidably sleeved on the rotating rod. A protrusion is provided in the first slider, and the protrusion slides with the two spiral grooves in turn. The guide rod is horizontally arranged in the body. The first slider is slidably sleeved on the guide rod. A positioning groove is provided on the first slider. When the glue coating box moves down to the first workstation, the connecting block is plugged into the positioning groove.

[0016] Furthermore, the trigger assembly includes multiple blocks, multiple telescopic rods and multiple springs, a glue outlet hole is provided at the bottom of the glue box, a glue inlet pipe is provided at the top of the glue scraper box, a through hole is provided at the bottom of the glue scraper box, and multiple grooves are provided in a circular array on the inner wall of the glue outlet hole, each of the grooves is slidably connected with a block through an elastic element, the bottom of each block is slidably abutted against the top of the glue inlet pipe, and the bottom of each block is inclined, and when the blocks are close to each other, the glue outlet hole can be blocked.

[0017] Furthermore, a support plate is provided on the other side of the machine body, a motor is provided on the support plate, and an output end of the motor is coaxially fixedly connected to an end of the rotating rod away from the incomplete gear.

[0018] Compared with the prior art, the present invention provides the following beneficial effects:

[0019] 1. The second fiber layer in the invention is made of silver ion antibacterial fiber, which can effectively kill a variety of bacteria and prevent and treat a variety of diseases, and the Teflon coating layer can make the fabric have the characteristics of high temperature resistance and anti-static properties.

[0020] 2. The fabric compounding machine in the invention can intermittently apply glue to the fabric through the cooperation between the transmission component and the linkage component, so as to facilitate the filling of thermal insulation materials such as cotton between the gaps, thereby facilitating the subsequent production of thermal insulation clothing and improving the composite accuracy of the fabric. At the same time, it can also realize automatic filling of glue to improve the efficiency of fabric compounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A side view of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of point E in the middle;

[0025] Figure 4 A schematic diagram of a transmission assembly provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a trigger component provided by an embodiment of the present invention;

[0027] Figure 6 A side view of the overall structure provided by an embodiment of the present invention;

[0028] Figure 7 for Figure 6 Sectional view at AA in the middle;

[0029] Figure 8 for Figure 7 Sectional view at the middle BB;

[0030] Fig. 9 for Figure 8 The enlarged view of point D in the middle;

[0031] Fig.10 for Figure 7 Cross-sectional view at CC.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. body; 2. incomplete gear; 3. gear body; 4. synchronous wheel; 5. synchronous belt; 6. winding roller; 7. glue box; 8. pressure roller; 9. glue box; 10. glue scraper box; 11. glue hole; 12. connecting block; 13. support plate; 14. motor; 15. first slider; 16. rotating rod; 17. guide rod; 18. spiral groove; 19. connecting column; 20. rocker rod; 21. second slider; 22. limiting rod; 23. slide groove; 24. glue inlet pipe; 25. block; 26. telescopic rod; 27. spring; 28. groove; 29. ​​tensioning plate; 30. positioning groove; 31. Teflon coating layer; 32. first fiber layer; 33. filling layer; 34. second fiber layer; 35. skin-friendly layer. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] See also Figure 1-9 A technical solution provided by an embodiment of the present invention: the Teflon film breathable fabric comprises a surface layer, an inner layer and a filling layer 33 located between the surface layer and the inner layer, the filling layer 33 is a cotton fiber cloth layer, the surface layer comprises a Teflon coating layer 31 and a first fiber layer 32, the first fiber layer 32 is polyester fiber, the inner layer comprises a second fiber layer 34 and a skin-friendly layer 35, the second fiber layer 34 is made of silver ion antibacterial fiber, the skin-friendly layer 35 is a mesh structure with through holes in an array, the skin-friendly layer 35 is a knitted fabric, the Teflon coating layer 31 is sprayed on the outside of the first fiber layer 32, and the through hole diameter on the skin-friendly layer 35 is 0.4-1 mm. Specifically, the second fiber layer 34 is made of silver ion antibacterial fiber, which can effectively kill a variety of bacteria and prevent and treat a variety of diseases, and the Teflon coating layer 31 can make the fabric have the characteristics of high temperature resistance and anti-static.

[0035] The present invention also provides a method for preparing a Teflon film breathable fabric, comprising the following steps:

[0036] S1. First, polyester fiber, silver ion antibacterial fiber and knitted fabric are knitted into a first fiber layer 32, a second fiber layer 34 and a skin-friendly layer 35 respectively by a knitting machine;

[0037] S2, then attaching the Teflon coating layer 31 to the outside of the first fiber layer 32 by a fabric laminating machine, and then attaching the second fiber layer 34 to the outer layer of the skin-friendly layer 35 by a fabric laminating machine;

[0038] S3, finally, the surface layer, the filling layer 33 and the inner layer are combined into a Teflon film breathable fabric by knitting or gluing.

[0039] As a preferred technical solution, the fabric laminating machine includes a body 1, a transmission component, a linkage component and a trigger component. A winding roller 6 is intermittently rotated in the body 1, a glue tank 7 is provided on the top of the body 1, a glue coating box 9 is vertically slidably connected in the body 1, and a plurality of glue coating holes 11 are opened on the glue coating box 9. The glue coating box 9 has a first station in which it abuts against the fabric during its downward sliding stroke, a glue scraping box 10 is horizontally slidably connected in the glue coating box 9, and a second station in which the glue scraping box 10 abuts against the glue tank 7 during its upward sliding stroke. The transmission component is driven by the rotation of the winding roller 6 to make the glue coating box 9 slide downward to the first station. When the glue coating box 9 moves down to the first station, the glue scraping box 10 is horizontally reciprocated by the linkage component. When the glue scraping box 10 moves up to the second station, the glue tank 7 is used to fill the glue scraping box 10 with glue.

[0040] As a preferred technical solution, the transmission assembly includes an incomplete gear 2 and a gear body 3 meshing with the incomplete gear 2, the incomplete gear 2 and the gear body 3 are rotatably connected to one side of the machine body 1, a synchronous wheel 4 is coaxially arranged on one end of the winding roller 6 and the gear body 3, and a synchronous belt 5 is commonly connected to the two synchronous wheels 4 for transmission, a connecting column 19 is fixedly connected to the other end of the gear body 3, a swing rod 20 is rotatably sleeved on the connecting column 19, a second slider 21 is fixedly connected to one side of the glue coating box 9, and the other end of the swing rod 20 is rotatably connected to the second slider 21. Specifically, a support plate 13 is provided on the other side of the machine body 1, and a motor 14 is provided on the support plate 13. The output end of the motor 14 is coaxially fixedly connected to the end of the rotating rod 16 away from the incomplete gear 2. Specifically, pressure rollers 8 are symmetrically arranged in the machine body 1 for compounding fabrics. Starting the motor 14 drives the rotating rod 16 to rotate, and at the same time drives the incomplete When the gear 2 rotates, and the incomplete gear 2 is meshed with the gear body 3, the winding roller 6 is driven to rotate through the cooperation of the two synchronous wheels 4 and the synchronous belt 5 to wind up a certain length of fabric to avoid the fabric movement causing the glue dispensing position to deviate from the predetermined position, resulting in uneven glue dispensing. The gear body 3 rotates half a circle, and the connecting column 19 moves to the lowest horizontal position, and the second slider 21 is driven to move downward through the rocker rod 20, and at the same time, the glue coating box 9 and the glue scraping box 10 on the glue coating box 9 are driven downward, so that the glue coating box 9 moves to the first station, and the bottom of the glue coating box 9 abuts against the fabric. Preferably, a tensioning plate 29 is horizontally arranged in the machine body 1, and the top of the tensioning plate 29 slides and abuts against the other side of the fabric. At this time, the glue coating box 9 cooperates with the tensioning plate 29 to clamp the fabric, and the fabric movement is avoided for the second time. The glue dispensing position deviates from the predetermined position, and the gear body 3 rotates half a circle again, which can drive the glue coating box 9 to move up, so that the glue scraping box 10 moves to the second station.

[0041] As a preferred technical solution, a slide groove 23 is vertically opened in the body 1, a limit rod 22 is vertically provided in the slide groove 23, and the second slider 21 is vertically slidably sleeved on the limit rod 22. Specifically, due to the limit guide of the limit rod 22, the connecting block 12 can only perform vertical reciprocating sliding.

[0042] As a preferred technical solution, the linkage assembly includes a first slider 15, a rotating rod 16 and a guide rod 17. A connecting block 12 is provided on one side of the glue scraping box 10. The rotating rod 16 is coaxially fixedly connected to one end of the incomplete gear 2. The rotating rod 16 is provided with two spiral grooves 18 connected end to end. The first slider 15 is horizontally slidably sleeved on the rotating rod 16. A protrusion is provided in the first slider 15, and the protrusion slides with the two spiral grooves 18 in turn. The guide rod 17 is horizontally arranged in the body 1. The first slider 15 is slidably sleeved on the guide rod 17. A positioning groove 30 is provided on the first slider 15. When the glue coating box 9 moves down to the first station, the connecting block 12 is plugged into the positioning groove 30. Specifically, , rotate the rotating rod 16, through the sliding cooperation between the protrusion and the two spiral grooves 18, and at the same time the guide rod 17 limits the circumferential rotation of the first slider 15, and drives the first slider 15 to slide reciprocatingly horizontally on the rotating rod 16 through the spiral transmission. When the glue box 9 moves down to the first station, the connecting block 12 is plugged into the positioning groove 30, and the first slider 15 drives the glue scraping box 10 to slide reciprocatingly horizontally through the connecting block 12, so that the glue in the glue scraping box 10 flows to the fabric through each glue coating hole 11. The reciprocating sliding can realize gluing twice, which ensures the uniformity of the glue during the gluing process, and the excess glue is retained in the glue scraping box 10, and will not overflow and leak from the glue coating holes 11, thereby improving the accuracy of the composite.

[0043] As a preferred technical solution, the trigger assembly includes a plurality of blocks 25, a plurality of telescopic rods 26 and a plurality of springs 27. A glue outlet hole is provided at the bottom of the glue box 7, a glue inlet pipe 24 is provided at the top of the glue scraper box 10, a through hole is provided at the bottom of the glue scraper box 10, and a plurality of grooves 28 are provided in a circular array on the inner wall of the glue outlet hole. A block 25 is slidably connected to each groove 28 through an elastic element. The bottom of each block 25 is slidably abutted against the top of the glue inlet pipe 24, and the bottom of each block 25 is inclined. When each block 25 is close to each other, the glue outlet hole can be blocked. Specifically, the elastic element includes a telescopic rod 26 and a spring 27 sleeved on the telescopic rod 26, and the two ends of the spring 27 are respectively connected to the corresponding block 25 and groove 28 The groove wall is fixedly connected, and the telescopic rod 26 is arranged between the corresponding block 25 and the groove wall of the groove 28. When one gluing is completed, the glue in the glue scraping box 10 will decrease, and the glue scraping box 10 moves up with the glue coating box 9, and the glue inlet pipe 24 moves up to face the glue outlet hole. When the glue inlet pipe 24 abuts against the bottom of each block 25, each block 25 is squeezed to disperse it. When the glue scraping box 10 is located at the second station, the glue outlet hole is fully opened, and the glue in the glue tank 7 flows into the glue scraping box 10 through the glue inlet pipe 24, filling the glue scraping box 10, thereby improving the gluing efficiency, and when the glue scraping box 10 moves downward relative to the glue coating box 9, the glue inlet pipe 24 is separated from the glue outlet hole, and the elastic deformation of the spring 27 drives the blocks 25 to approach each other, and the glue outlet hole is blocked again to prevent glue leakage.

[0044] Working principle: The fabric compounding machine in the invention starts the motor 14 to drive the rotating rod 16 to rotate, and at the same time drives the incomplete gear 2 to rotate. When the incomplete gear 2 is meshed with the gear body 3, the two synchronous wheels 4 and the synchronous belt 5 cooperate to drive the winding roller 6 to rotate, and a certain length of fabric is wound to prevent the fabric movement from causing the glue point to deviate from the predetermined position, resulting in uneven glue point. The gear body 3 rotates half a circle, and the connecting column 19 moves to the lowest horizontal position, and the second slider 21 is driven downward by the swing rod 20, and the glue box 9 and the glue scraping box 10 on the glue box 9 are driven at the same time. The glue box 9 moves downward to the first station, and the bottom of the glue box 9 contacts the fabric. At this time, the glue box 9 cooperates with the tensioning plate 29 to clamp the fabric, and the fabric movement is prevented from causing the glue point to deviate from the predetermined position, so as to facilitate the filling of cotton and other thermal insulation materials between the gaps, thereby facilitating the subsequent production of thermal insulation clothing. The rotating rod 16 is rotated, and the sliding cooperation between the protrusion and the two spiral grooves 18 is achieved. At the same time, the guide rod 17 limits the circumferential rotation of the first slider 15, and the first slider 15 is driven to slide reciprocatingly on the rotating rod 16 through the spiral transmission. When the glue box 9 When it moves down to the first station, the connecting block 12 is plugged into the positioning groove 30, and the first slider 15 drives the glue scraping box 10 to slide back and forth horizontally through the connecting block 12, so that the glue in the glue scraping box 10 flows to the fabric through the glue coating holes 11. The reciprocating sliding can realize glue coating twice, which ensures the uniformity of the glue during the gluing process, and the excess glue is retained in the glue scraping box 10 and will not overflow and leak from the glue coating holes 11, thereby improving the accuracy of the composite. The gear body 3 rotates another half circle to drive the glue coating box 9 to move up, so that the glue scraping box 10 moves to the second station, and the glue scraping box 10 follows the coating. The glue box 9 moves up, and the glue inlet pipe 24 moves up to face the glue outlet hole. When the glue inlet pipe 24 abuts against the bottom of each block 25, each block 25 is squeezed to make it spread out. When the glue scraper box 10 is located at the second station, the glue outlet hole is fully opened, and the glue in the glue tank 7 flows into the glue scraper box 10 through the glue inlet pipe 24 to fill the glue scraper box 10, thereby improving the efficiency of gluing. When the glue scraper box 10 moves downward relative to the glue coating box 9, the glue inlet pipe 24 is separated from the glue outlet hole, and the elastic deformation of the spring 27 drives the blocks 25 to approach each other, thereby sealing the glue outlet hole again to prevent glue leakage.

[0045] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A Teflon film breathable fabric, characterized in that: The invention comprises a surface layer, an inner layer and a filling layer (33) located between the surface layer and the inner layer, wherein the filling layer (33) is a cotton fiber cloth layer, the surface layer comprises a Teflon coating layer (31) and a first fiber layer (32), the first fiber layer (31) is polyester fiber, the inner layer comprises a second fiber layer (34) and a skin-friendly layer (35), the second fiber layer (34) is made of silver ion antibacterial fiber, the skin-friendly layer (35) is a mesh structure with an array of through holes, and the skin-friendly layer (35) is a knitted fabric.

2. A Teflon film breathable fabric according to claim 1, characterized in that: The Teflon coating layer (31) is sprayed on the outer side of the first fiber layer (32).

3. The Teflon film breathable fabric according to claim 1, characterized in that: The through holes on the skin-friendly layer (35) have a diameter of 0.4-1 mm.

4. A method for preparing a Teflon film breathable fabric, used for preparing a Teflon film breathable fabric according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. First, polyester fiber, silver ion antibacterial fiber and knitted fabric are knitted into a first fiber layer (32), a second fiber layer (34) and a skin-friendly layer (35) respectively by a knitting machine; S2, then attaching the Teflon coating layer (31) to the outer side of the first fiber layer (32) by a fabric laminating machine, and then attaching the second fiber layer (34) to the outer layer of the skin-friendly layer (35) by a fabric laminating machine; S3, finally, the surface layer, the filling layer (33) and the inner layer are combined into a Teflon film breathable fabric by knitting or gluing.

5. According to the preparation method of a breathable Teflon film as described in claim 4, the fabric compounding machine comprises a machine body (1), a winding roller (6) is intermittently rotated in the machine body (1), a glue liquid box (7) is provided on the top of the machine body (1), a glue coating box (9) is vertically slidably connected in the machine body (1), a plurality of glue coating holes (11) are provided on the glue coating box (9), the glue coating box (9) has a first station abutting against the fabric in the downward sliding stroke, a glue scraping box (10) is horizontally slidably connected in the glue coating box (9), and the glue scraping box (10) is abutted against the glue liquid box (7) in the upward sliding stroke, characterized in that Also includes: A transmission assembly, which is driven by the winding roller (6) to rotate so that the glue coating box (9) slides downward to the first working position; A linkage assembly, when the glue coating box (9) moves down to the first working position, the glue scraping box (10) is caused to slide back and forth horizontally through the linkage assembly; The trigger component is used to cause the glue liquid box (7) to fill the glue liquid into the glue scraping box (10) when the glue scraping box (10) moves upward to the second working position.

6. The method for preparing a breathable Teflon film according to claim 5, characterized in that: The transmission assembly comprises an incomplete gear (2) and a gear body (3) meshing with the incomplete gear (2); the incomplete gear (2) and the gear body (3) are rotatably connected to one side of the machine body (1); a synchronous wheel (4) is coaxially arranged at one end of the winding roller (6) and the gear body (3); a synchronous belt (5) is commonly connected to the two synchronous wheels (4); a connecting column (19) is fixedly connected to the other end of the gear body (3); a swing rod (20) is rotatably sleeved on the connecting column (19); a second slider (21) is fixedly connected to one side of the glue coating box (9); and the other end of the swing rod (20) is rotatably connected to the second slider (21).

7. The method for preparing a breathable Teflon film according to claim 6, characterized in that: A slide groove (23) is vertically provided in the machine body (1), a limit rod (22) is vertically provided in the slide groove (23), and the second sliding block (21) is vertically slidably sleeved on the limit rod (22).

8. The method for preparing a breathable Teflon film according to claim 6, characterized in that: The linkage assembly comprises a first slider (15), a rotating rod (16) and a guide rod (17). A connecting block (12) is provided on one side of the glue scraping box (10). The rotating rod (16) is coaxially fixedly connected to one end of the incomplete gear (2). The rotating rod (16) is provided with two spiral grooves (18) connected end to end. The first slider (15) is horizontally slidably sleeved on the rotating rod (16). A protrusion is provided in the first slider (15). The protrusion is slidably matched with the two spiral grooves (18) in sequence. The guide rod (17) is horizontally arranged in the body (1). The first slider (15) is slidably sleeved on the guide rod (17). A positioning groove (30) is provided on the first slider (15). When the glue coating box (9) moves down to the first working position, the connecting block (12) is plugged into the positioning groove (30).

9. The method for preparing a breathable Teflon film according to claim 5, characterized in that: The trigger assembly comprises a plurality of blocks (25), a plurality of telescopic rods (26) and a plurality of springs (27); a glue outlet hole is provided at the bottom of the glue liquid box (7); a glue inlet pipe (24) is provided at the top of the glue scraping box (10); a through hole is provided at the bottom of the glue scraping box (10); a plurality of grooves (28) are provided in a circular array on the inner wall of the glue outlet hole; a block (25) is slidably connected in each of the grooves (28) via an elastic element; the bottom of each of the blocks (25) is slidably abutted against the top of the glue inlet pipe (24); the bottom of each of the blocks (25) is inclined; when the blocks (25) are close to each other, the glue outlet hole can be blocked.

10. The method for preparing a breathable Teflon film according to claim 9, characterized in that: A support plate (13) is provided on the other side of the machine body (1), and a motor (14) is provided on the support plate (13). The output end of the motor (14) is coaxially fixedly connected to an end of the rotating rod (16) away from the incomplete gear (2).

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