Multilayer composite waterproof breathable fabric and preparation process thereof

Abstract

The invention discloses a multi-layer composite waterproof breathable fabric and a preparation process thereof, and relates to the textile technology, and aims to solve the problem that the current tent cloth cannot cope with the weather of sunny day, the key point of the technical scheme is that the multi-layer composite waterproof breathable fabric comprises a terylene layer and a heat insulation layer, the terylene layer is provided with a plurality of through holes, the heat insulation layer and the terylene layer are in point adhesion to form a cavity, and the through holes are communicated with the terylene layer. A plurality of openings are formed in the heat insulation layer, heat insulation cloth pieces are arranged in the openings, the edges of the heat insulation cloth pieces are connected with the edges of the openings in a sewing mode through sewing threads, and a thermal expansion area located under the heat insulation cloth pieces and elastic blocks staggered with the heat insulation cloth pieces are arranged on the top face of the polyester layer. When the temperature of the sewing thread reaches a threshold value, the sewing thread shrinks, and the threshold value of the sewing thread is higher than that of the thermal expansion area. The tent cloth has an excellent heat insulation effect, and the heat insulation performance of the tent cloth is further improved through the arrangement of the ceramic fiber cloth.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a multi-layer composite waterproof and breathable fabric and a preparation process thereof. Background Art

[0002] Polyester fabrics have a wide range of applications, but due to static electricity problems, their pricing and status in clothing and apparel are relatively low. However, in outdoor products, polyester fabrics are widely used, especially in tent fabrics, where their use is relatively important.

[0003] When the current tent cloth is exposed to direct sunlight, it will become hot in a short period of time, and the temperature inside the tent will also rise, which cannot provide effective heat insulation. In particular, in order to ensure the sun protection performance, black glue will be coated on the tent cloth. However, the black glue absorbs heat more seriously under the sunlight, so it is impossible to provide a good heat insulation effect, making the current tent cloth unable to cope with sunny weather.

[0004] Therefore, a multi-layer composite waterproof and breathable fabric and a preparation process thereof are proposed to solve or alleviate the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a multi-layer composite waterproof and breathable fabric and its preparation process, which can produce a multi-layer composite waterproof and breathable fabric, and after the temperature of the tent cloth rises, it can allow ventilation between the insulation layer and the polyester layer, thereby reducing the temperature of the entire multi-layer composite waterproof and breathable fabric. At the same time, when the sun shines directly on the sewing thread, the sewing thread can shrink, closing the opening and one side edge of the insulation cloth piece, thereby preventing the temperature in the cavity from rising due to direct sunlight.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A multi-layer composite waterproof and breathable fabric comprises a polyester layer and a heat-insulating layer, wherein the polyester layer is provided with a plurality of through holes, the heat-insulating layer and the polyester layer are point-bonded to form a cavity, the heat-insulating layer is provided with a plurality of openings, heat-insulating cloth sheets are arranged in the openings, the edges of the heat-insulating cloth sheets are sewn and connected with the edges of the openings by sewing threads, the top surface of the polyester layer is provided with a thermal expansion zone located directly below the heat-insulating cloth sheet and an elastic block offset from the heat-insulating cloth sheet, when the temperature of the thermal expansion zone reaches a threshold value, the thermal expansion zone expands to lift up the heat-insulating cloth sheet, and when the temperature of the sewing thread reaches a threshold value, it contracts, and the threshold value of the sewing thread is higher than the threshold value of the thermal expansion zone.

[0007] The present invention is further configured as follows: the cross-sectional area of ​​the thermal expansion zone is smaller than the cross-sectional area of ​​the thermal insulation cloth sheet, and the thermal expansion zone is formed by bonding a plurality of expansion microspheres to the film.

[0008] The present invention is further configured as follows: the elastic block is formed by bonding a plurality of latex blocks to the film.

[0009] The present invention is further configured as follows: there is a distance between the opening and the edge of the heat-insulating cloth sheet, and the sewing thread is formed by twisting a plurality of memory fibers.

[0010] The present invention is further configured as follows: the top surface of the polyester layer is coated with a black glue layer, and the through hole also penetrates the black glue layer.

[0011] The present invention also provides a multi-layer composite waterproof breathable fabric preparation process, which is used to produce the multi-layer composite waterproof breathable fabric, comprising the following steps: Take the polyester layer, apply glue, and let it stand to form a black glue layer on its top surface; Punching the polyester layer with the black glue layer to form a plurality of through holes; Take the heat insulation layer and cut it on a laser marking machine to form openings and heat insulation fabric sheets; The heat-insulating cloth sheet and the edge of the opening are sewn together by a flat machine using a sewing thread made of twisted memory fibers; Take the film through the sheet forming machine, apply glue, spray balls or spray blocks, and then let it stand to obtain a thermal expansion area or elastic block; Bond the thermal expansion area to the top surface of the black glue layer, and bond the elastic block to the bottom surface of the thermal insulation layer; The black glue layer is bonded to the thermal insulation layer through a glue dispensing process, and the thermal expansion zone is located directly below the thermal insulation cloth sheet to obtain a multi-layer composite waterproof and breathable fabric.

[0012] The present invention is further configured as follows: the sheet forming machine includes a suction cup that moves back and forth in the horizontal direction, a glue groove located below the suction cup and on its movement path, and a receiving groove, the suction cup is used to adsorb the film, a hinge seat is fixedly connected above the glue groove, a glue roller for applying glue to the film is rotatably connected between the hinge seats, a limit plate for limiting the displacement of the suction cup is fixedly connected to the top surface of the receiving groove, and when the suction cup is located directly above the receiving groove, there is a gap between it and the open edge of the top surface of the receiving groove, and an air inlet hole is opened on the bottom surface of the receiving groove, and the aperture of the air inlet hole is smaller than the particle size of the expanded microspheres and the elastic blocks.

[0013] The present invention is further configured as follows: an air cavity communicating with a plurality of air inlet holes is fixedly connected to the lower side of the accommodating groove, and a plurality of induced draft fans communicating with the interior of the air cavity are fixedly connected to the outer side of the air cavity.

[0014] The present invention is further configured as follows: the sheet forming machine also includes a bracket, an electric track fixedly connected to the bracket, a slider slidably connected to the electric track, and a mounting seat fixedly connected to the slider, the suction cup is fixedly connected to the mounting seat, and the suction cup is connected to an air pump through an air pipe, a touch switch is fixedly connected to the limit plate, the touch switch is connected to a controller, and the controller is coupled to the electric track.

[0015] In summary, the present invention has the following beneficial effects: This process can produce a multi-layer composite waterproof and breathable fabric, and after the temperature of the tent cloth rises, it can allow air to pass between the insulation layer and the polyester layer, thereby reducing the temperature of the entire multi-layer composite waterproof and breathable fabric. At the same time, when the sun shines directly on the sewing thread, the sewing thread can shrink, closing the opening and one side edge of the insulation cloth piece, thereby preventing the temperature in the cavity from rising due to direct sunlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 A top view of the present invention; Figure 4 for Figure 3 The enlarged view of point B in the middle; Figure 5 It is a structural schematic diagram of the sheet forming machine in the present invention.

[0018] In the figure: 1. polyester layer; 2. black glue layer; 3. through hole; 4. elastic block; 5. expanded microspheres; 6. thermal insulation layer; 7. thermal insulation cloth; 8. sewing thread; 9. opening; 10. cavity; 11. bracket; 12. electric track; 13. slider; 14. mounting seat; 15. suction cup; 16. air pipe; 17. film; 18. glue groove; 19. hinged seat; 20. glue roller; 21. air cavity; 22. induced draft fan; 23. receiving groove; 24. limit plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the invention is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] A multi-layer composite waterproof and breathable fabric preparation process comprises the following steps: Take the polyester layer 1, apply glue, and let it stand to form a black glue layer 2 on its top surface.

[0026] The polyester layer 1 with the black glue layer 2 is punched to form a plurality of through holes 3.

[0027] The heat insulation layer 6 is cut on a laser marking machine to form an opening 9 and a heat insulation fabric sheet 7 .

[0028] The heat-insulating cloth sheet 7 and the edge of the opening 9 are sewn together by a flat car through a sewing thread 8 formed by twisting memory fibers.

[0029] The film 17 is taken out by a sheet forming machine for glue coating, ball spraying or block spraying and then left to stand to obtain a thermal expansion area or an elastic block.

[0030] Among them, Figure 5 As shown, the sheet forming machine includes a suction cup 15 that moves back and forth in the horizontal direction, a glue groove 18 located below the suction cup 15 and on its movement path, and a receiving groove 23. The sheet forming machine also includes a bracket 11, an electric track 12 fixedly connected to the bracket 11, a slider 13 slidably connected to the electric track 12, and a mounting base 14 fixedly connected to the slider 13. The suction cup 15 is fixedly connected to the mounting base 14, and the suction cup 15 is connected to an air pump through an air pipe 16. A touch switch is fixedly connected to the limit plate 24, and the touch switch is connected to a controller, and the controller is coupled to the electric track 12.

[0031] The suction cup 15 is used to absorb the film 17, and an articulated seat 19 is fixedly connected above the glue groove 18. A rubber roller 20 for applying glue to the film 17 is rotatably connected between the articulated seats 19. A limit plate 24 for limiting the displacement of the suction cup 15 is fixedly connected to the top surface of the receiving groove 23, and when the suction cup 15 is located directly above the receiving groove 23, there is a gap between it and the open edge of the top surface of the receiving groove 23. An air inlet hole is opened on the bottom surface of the receiving groove 23, and the aperture of the air inlet hole is smaller than the particle size of the expanded microspheres 5 and the elastic block 4. An air cavity 21 connected to a plurality of air inlet holes is fixedly connected below the receiving groove 23, and a plurality of induced draft fans 22 connected to the interior of the air cavity 21 are fixedly connected to the outside of the air cavity 21.

[0032] When the sheet forming machine takes the film 17 for processing to obtain the thermal expansion zone or the elastic block, first, the air pump works to suck air through the air pipe 16, so that an upward airflow is formed on the bottom surface of the suction cup 15 for adsorption. The film 17 at the top will be adsorbed on the bottom surface of the suction cup 15 under the action of the air pressure of the air flow.

[0033] At this time, the suction cup 15 follows the slider 13 to move on the electric track 12, and the servo motor arranged on the hinge seat 19 is coaxially fixedly connected with the rubber roller 20, thereby driving the rubber roller 20 to rotate. When the rubber roller 20 rotates, the glue will be brought out from the glue groove 18 and attached to its surface. When the film 17 passes by, the glue on the rubber roller 20 is coated on the film 17, so that the bottom surface of the film 17 is fully coated with glue.

[0034] Then, the suction cup 15 with the film 17 touches the touch switch, so that the controller controls the electric track 12 to stop temporarily, so that the suction cup 15 covers the top of the receiving groove 23, and then the induced draft fan 22 starts, driving the air into the air cavity 21, and the air then enters the air inlet from the air cavity 21, blowing a number of expanded microspheres 5 or elastic blocks 4, wherein the elastic blocks 4 are latex blocks, so that the expanded microspheres 5 or elastic blocks 4 can be blown under the action of the airflow and adhere to the glue on the bottom surface of the film 17.

[0035] Then the induced draft fan 22 stops working, the controller controls the electric track 12, drives the slider 13 and the suction cup 15 back to the original position, the air pump stops working, the thermal expansion area or the elastic area falls off, is manually taken away, and then the above work is repeated.

[0036] Bond the thermal expansion area to the top surface of the black glue layer 2, and bond the elastic block to the bottom surface of the thermal insulation layer 6; The black glue layer 2 is bonded to the heat insulation layer 6 by a glue dispensing process, and the thermal expansion zone is located directly below the heat insulation cloth sheet 7, so as to obtain a multi-layer composite waterproof and breathable fabric.

[0037] The multi-layer composite waterproof and breathable fabric, such as Figure 1-4 As shown, it includes a polyester layer 1 and a heat-insulating layer 6, the polyester layer 1 is provided with a plurality of through holes 3, the top surface of the polyester layer 1 is coated with a black glue layer 2, and the through holes 3 also penetrate the black glue layer 2, the heat-insulating layer 6 and the polyester layer 1 are point-bonded to form a cavity 10, the heat-insulating layer 6 is provided with a plurality of openings 9, a heat-insulating cloth sheet 7 is arranged in the opening 9, the edge of the heat-insulating cloth sheet 7 is sewn and connected with the edge of the opening 9 by sewing thread 8, there is a distance between the opening 9 and the edge of the heat-insulating cloth sheet 7, and the sewing thread 8 is formed by twisting a plurality of memory fibers.

[0038] The top surface of the polyester layer 1 is provided with a thermal expansion zone located just below the heat-insulating cloth sheet 7 and an elastic block offset from the heat-insulating cloth sheet 7 . The elastic block is formed by bonding a plurality of latex blocks to the film 17 .

[0039] When the temperature of the thermal expansion zone reaches a threshold value, the thermal expansion zone expands and lifts up the thermal insulation cloth piece 7, and when the temperature of the sewing thread 8 reaches a threshold value, it contracts. The threshold value of the sewing thread 8 is higher than the threshold value of the thermal expansion zone. The cross-sectional area of ​​the thermal expansion zone is smaller than the cross-sectional area of ​​the thermal insulation cloth piece 7. The thermal expansion zone is formed by bonding a number of expandable microspheres 5 to the film 17.

[0040] The above-mentioned multi-layer composite waterproof and breathable fabric can play a good heat-insulating role through the cavity 10 when used normally, and the heat-insulating layer 6 is a ceramic fiber cloth, so that it can itself play a good heat-insulating effect. At the same time, the setting of the black glue layer 2 further enhances the heat-insulating effect of the multi-layer composite waterproof and breathable fabric, and the air inside the tent can be ventilated through the through hole 3 to avoid stuffiness in the tent.

[0041] However, in extreme weather with high ambient temperature, the temperature of the multi-layer composite waterproof and breathable fabric rises, and the expandable microspheres 5 therein will expand, thereby lifting the thermal insulation fabric 7, causing the sewing thread 8 to deform, thereby increasing the distance between the thermal insulation fabric 7 and the opening 9, facilitating the discharge of hot air in the cavity 10, and keeping the air in the cavity 10 at a relatively low temperature, thereby achieving effective insulation.

[0042] If the sewing thread 8 is exposed to direct sunlight, it can no longer be shielded by the heat-insulating cloth sheet 7 and will shrink, thereby reducing the distance between the heat-insulating cloth sheet 7 and the side of the opening 9 and shielding it, preventing direct sunlight from entering the cavity 10, preventing the air temperature in the cavity 10 from rising, and maintaining a good insulation effect.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-layer composite waterproof and breathable fabric, characterized in that: The invention comprises a polyester layer (1) and a heat-insulating layer (6), wherein the polyester layer (1) is provided with a plurality of through holes (3), the heat-insulating layer (6) and the polyester layer (1) are point-bonded to form a cavity (10), the heat-insulating layer (6) is provided with a plurality of openings (9), a heat-insulating cloth sheet (7) is arranged in the opening (9), the edge of the heat-insulating cloth sheet (7) and the edge of the opening (9) are sewn and connected by sewing thread (8), the top surface of the polyester layer (1) is provided with a heat-expansion zone located directly below the heat-insulating cloth sheet (7) and an elastic block offset from the heat-insulating cloth sheet (7), when the temperature of the heat-expansion zone reaches a threshold value, the heat-expansion zone expands to lift up the heat-insulating cloth sheet (7), and when the temperature of the sewing thread (8) reaches a threshold value, it contracts, and the threshold value of the sewing thread (8) is higher than the threshold value of the heat-expansion zone.

2. The multi-layer composite waterproof breathable fabric according to claim 1, characterized in that: The cross-sectional area of ​​the thermal expansion zone is smaller than the cross-sectional area of ​​the thermal insulation cloth sheet (7), and the thermal expansion zone is formed by bonding a plurality of expansion microspheres (5) to the film (17).

3. The multi-layer composite waterproof and breathable fabric according to claim 1, characterized in that: The elastic block is formed by bonding a plurality of latex blocks to the film (17).

4. The multi-layer composite waterproof breathable fabric according to claim 1, characterized in that: There is a gap between the opening (9) and the edge of the heat-insulating fabric sheet (7), and the sewing thread (8) is formed by twisting a plurality of memory fibers.

5. The multi-layer composite waterproof breathable fabric according to claim 1, characterized in that: The top surface of the polyester layer (1) is coated with a black glue layer (2), and the through hole (3) also penetrates the black glue layer (2).

6. A process for preparing a multi-layer composite waterproof breathable fabric, for producing a multi-layer composite waterproof breathable fabric as claimed in any one of claims 1 to 5, characterized in that: The following steps are included: The polyester layer (1) is coated with glue and allowed to stand to form a black glue layer (2) on the top surface thereof; Punching the polyester layer (1) with the black glue layer (2) to form a plurality of through holes (3); The heat insulation layer (6) is cut on a laser marking machine to form an opening (9) and a heat insulation cloth sheet (7); The heat-insulating cloth sheet (7) and the edge of the opening (9) are sewn together by a flat machine using a sewing thread (8) made of twisted memory fibers; The film (17) is taken out by a sheet forming machine, coated with glue, sprayed with balls or blocks, and then left to stand to obtain a thermal expansion area or an elastic block; Bonding the thermal expansion zone to the top surface of the black glue layer (2), and bonding the elastic block to the bottom surface of the thermal insulation layer (6); The black glue layer (2) is bonded to the heat insulation layer (6) by a glue dispensing process, and the thermal expansion zone is located directly below the heat insulation cloth sheet (7), thereby obtaining a multi-layer composite waterproof and breathable fabric.

7. A process for preparing a multi-layer composite waterproof and breathable fabric according to claim 6, characterized in that: The sheet forming machine comprises a suction cup (15) which moves back and forth in the horizontal direction, a glue groove (18) located below the suction cup (15) and on its movement path, and a receiving groove (23), wherein the suction cup (15) is used to absorb the film (17), a hinge seat (19) is fixedly connected above the glue groove (18), a glue roller (20) for applying glue to the film (17) is rotatably connected between the hinge seats (19), a limit plate (24) for limiting the displacement of the suction cup (15) is fixedly connected to the top surface of the receiving groove (23), and when the suction cup (15) is located directly above the receiving groove (23), there is a gap between it and the open edge of the top surface of the receiving groove (23), and an air inlet hole is opened on the bottom surface of the receiving groove (23), and the aperture of the air inlet hole is smaller than the particle size of the expanded microspheres (5) and the elastic block (4).

8. A process for preparing a multi-layer composite waterproof and breathable fabric according to claim 7, characterized in that: An air cavity (21) communicating with a plurality of air inlet holes is fixedly connected to the bottom of the accommodating groove (23), and a plurality of induced draft fans (22) communicating with the inside of the air cavity (21) are fixedly connected to the outside of the air cavity (21).

9. The process for preparing a multi-layer composite waterproof and breathable fabric according to claim 7, characterized in that: The sheet forming machine further comprises a bracket (11), an electric track (12) fixedly connected to the bracket (11), a slider (13) slidably connected to the electric track (12), and a mounting seat (14) fixedly connected to the slider (13); the suction cup (15) is fixedly connected to the mounting seat (14), and the suction cup (15) is connected to an air pump via an air pipe (16); a touch switch is fixedly connected to the limit plate (24), and the touch switch is connected to a controller, and the controller is coupled to the electric track (12).

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