Preparation process of foamed pore-forming film-coated fabric

Abstract

The invention discloses a preparation process of a foamed pore-forming film-coated fabric, and relates to the technical field of textile processes. According to the key points of the technical scheme, the production line comprises a film preparation part and a self-adaptive flexible lamination part which are arranged in sequence, wherein the film preparation part comprises an extruder for mixing and melting a polymer, a foaming agent and an auxiliary agent, a casting device and a foaming oven; the self-adaptive flexible laminating part comprises a hot pressing roller and a flexible bearing device, a heating system is arranged in the hot pressing roller, the hot pressing roller and the flexible bearing device are oppositely arranged, a hot pressing roller gap is formed between the hot pressing roller and the flexible bearing device, the flexible bearing device comprises a conveying belt and a plurality of pressing bag sets, and the conveying belt is used for conveying a base layer and a first film and a second film covering the two sides of the base layer; the conveying belt is composed of a plurality of bearing belts, the pressing bag sets and the bearing belts are arranged in a one-to-one correspondence mode, the pressing bag sets are arranged below the bearing belts, self-adaptive adjustment is achieved through the flexible bearing device according to different fabric thicknesses, and the compounding quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile technology, more particularly, it relates to a preparation process of foaming pore film-coated fabric. BACKGROUND

[0002] The foaming pore film-coating technology is to flow the polymer containing foaming agent through the mold on the release paper to form a uniform film, and then put the film into an oven, at this time the foaming agent is decomposed by heat to form a microporous structure inside the film, forming an independent foaming film, and finally hot-pressing the foaming film on the fabric to form a plurality of irregular protrusions on the surface of the fabric.

[0003] The traditional equipment used for compounding the foaming film on the fabric is a set of rigid heated pressure rollers arranged in parallel. In the hot pressing process, in order to ensure sufficient composite peel strength, a large pressure needs to be applied to the film and the fabric. At this time, the internal microporous structure of the foaming film will collapse or be damaged under the pressure of the pressure rollers when passing through the gap between the two sets of hot pressing rollers. When different types and thicknesses of fabrics pass through the two sets of hot pressing rollers, the two sets of hot pressing rollers cannot well adapt to the differences in thickness and surface texture of different types of fabrics. In this case, the operator must stop and manually adjust the gap between the two sets of hot pressing rollers, which reduces the overall work efficiency.

[0004] Therefore, a new scheme needs to be proposed to solve this problem. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a preparation process of foaming pore film-coated fabric.

[0006] The above technical purpose of the present application is realized by the following technical scheme: the preparation process of foaming pore film-coated fabric comprises a film preparation part and a self-adaptive flexible laminating part arranged in sequence, the film preparation part comprises an extruder for mixing and melting the polymer, foaming agent and auxiliary agent, a casting device and a foaming oven; The self-adaptive flexible laminating part comprises a hot pressing roller and a flexible supporting device, the hot pressing roller is internally provided with a heating system, the hot pressing roller and the flexible supporting device are oppositely arranged, and a hot pressing roller gap is formed between the two, the flexible supporting device comprises a conveying belt and a plurality of pressure capsule groups, the conveying belt is used for conveying the base layer and the films one and two covered on both sides of the base layer, the conveying belt is composed of a plurality of supporting belts, and a plurality of pressure capsule groups are arranged in one-to-one correspondence with a plurality of supporting belts, and the pressure capsule groups are arranged below the supporting belts; A constant pressure servo system is arranged in the self-adaptive flexible laminating part, the constant pressure servo system is connected with a single pressure capsule group, and is used for detecting the pressure in the single pressure capsule group and maintaining the pressure within a preset pressure value; The adaptive flexible laminated part is provided with a radio frequency identification system and a central control system for reading the identification information of the base layer, the film one and the film two, the central control system is in communication connection with the radio frequency identification system, the heating system and the constant pressure servo system, the central control system automatically sets the process parameters based on the identification information and controls the execution of the constant pressure servo system.

[0007] The application is further provided with a preparation process of the foamed and porous film fabric, which is used for manufacturing the adaptive flexible laminated part, and comprises the following steps: S1. reading the identification information of the base layer, the film one and the film two through the radio frequency identification system; S2. sequentially stacking the film one, the adhesive and the base layer, and preheating and centering the stacked materials; S3. guiding the materials treated in the S2 step to pass through the hot press roll gap formed by the adaptive flexible laminated part and the hot press roll; S3.1 heating and applying driving force to the materials treated in the S2 step through the hot press roll; S3.2. monitoring and adjusting the support force borne by each local area of the lower surface of the materials in real time through the constant pressure servo system, when the measured pressure of any local area is higher than the preset composite pressure, the corresponding driven pressure capsule group is controlled to release the medium to perform the lowering action, when the measured pressure of any local area is lower than the preset composite pressure, the corresponding driven pressure capsule group is controlled to supplement the medium to perform the lifting action; S4. repeating the step S3 to composite the film two on the other side of the base layer, and finally aging, cooling and inspecting the base layer with the composite film one and film two, and then winding.

[0008] The application is further provided with that the pressure capsule group comprises a floating pressure capsule, a pressure sensor corresponding to the floating pressure capsule and a servo valve, the floating pressure capsule is provided as a closed flexible cavity, and the pressure sensor is used for monitoring the pressure in the corresponding floating pressure capsule in real time.

[0009] The application is further provided with that the plurality of pressure capsule groups are in communication with the constant pressure servo system through independent servo valves, the constant pressure servo system receives the feedback signals from the pressure sensors in the plurality of pressure capsule groups, and controls the opening and closing of the servo valves to perform the functions of releasing and supplementing the medium.

[0010] The application is further provided with: the foaming pore-forming film fabric is made by the preparation process, comprising a fabric layer, the fabric layer comprises a base layer and a film one and a film two fixedly connected on both sides of the thickness direction, a plurality of protrusions one and a plurality of protrusions two are arranged on the film one and the film two respectively, the height of the protrusions one is between 0.05mm-0.2mm, the height of the protrusions two is between 0.2mm-0.5mm, the thickness of the film one is between 0.02mm-0.06mm, the thickness of the film two is between 0.06mm-0.15mm, the base layer is woven by composite yarn, and the composite yarn is modified polyester yarn added with graphene.

[0011] The application is further provided with: when the thickness of the fabric layer is 0.7mm, the thermal conductivity coefficient is 0.008.

[0012] The application is further provided with: the moisture permeability of the fabric layer is 8000g / (m²·24h).

[0013] In summary, the application has the following beneficial effects: by setting a plurality of pressure bag groups and a constant pressure servo system, local pressure of the fabric surface can be self-adaptively adjusted during the compounding process, the fabric thickness in the large area is automatically retreated to protect the protrusion structure, and the fabric thickness in the small area can be actively lifted to ensure the compounding firmness, the operator does not need to replace the width between the manual adjustment hot-pressing rollers, the compounding strength is ensured, and the operation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The control flow chart for the cooperative work between the central control system, the radio frequency identification system and the constant pressure servo system in the application. DETAILED DESCRIPTION

[0015] The application will be described in detail below in combination with the drawings and examples.

[0016] The preparation device of the foamed and perforated film fabric comprises a film preparation part and a self-adaptive flexible laminating part arranged in sequence, the film preparation part comprises an extruder and a casting device and a foaming oven for mixing and melting the polymer, the foaming agent and the additive, the polymer is set as a thermoplastic polyurethane with a melt index of 15-30 g / 10 min, the foaming agent is azodicarbonamide with an average particle size D50 of 5-10 μm, the additive can include nano calcium carbonate, a heat stabilizer, a colorant and the like, the above materials are put into a high-speed mixer, in the mixing process, the materials are mixed at a speed of 300-500 rpm for 10-15 minutes at room temperature of 20-30 DEG C, so as to ensure the uniform dispersion between the components, then the mixed materials are transferred to a dehumidifying dryer, dried at a temperature of 80-100 DEG C for 3-5 hours, so that the water content of the materials is reduced to below 100 ppm (0.01%), after the drying treatment of the materials, the water in the materials can be prevented from vaporizing in the subsequent high-temperature extrusion process, so as to cause uncontrollable cell and surface defects, and the subsequent foaming quality is ensured.

[0017] The dried material is sent into a twin-screw extruder, and the material is transported, compressed, melted, homogenized and other processes in the extruder. Different temperatures are needed to control the different parts of the material from the feeding port to the discharging port of the extruder. The temperature is gradually increased from 160°C to 185°C from the feeding to the discharging process, and the temperature is controlled to ensure that the material is completely plasticized, and the temperature will not be higher than the decomposition temperature of the foaming agent. The material that has completed plasticization and homogenization is extruded through a melt pump with stable pressure, and then extruded through a casting die gap, and then uniformly cast onto a casting cold drum containing cooling water. The surface temperature of the casting cold drum is precisely controlled between 15°C-35°C by a constant temperature system. The extruded material is rapidly cooled after contacting the surface of the cold drum, thereby forming a smooth surface of the first film and the second film. After the first film and the second film are peeled off from the cold drum, they are conveyed into a foaming oven. In the oven, the first film and the second film are reheated to the decomposition temperature of the foaming agent. The azodicarbonamide rapidly decomposes at this temperature to produce nitrogen, carbon monoxide and carbon dioxide. Since the first film and the second film are in a molten state, the generated gas will expand in the film and be induced to grow by the nucleating agent, thereby forming a number of protrusions and a number of protrusions. The foaming oven is provided with three heating zones with independent temperature control to form a precise temperature gradient curve to ensure the smooth and controllable foaming process. The first zone is set as a preheating zone, and the temperature in the first zone is set to 150°C-170°C to allow the first film and the second film to uniformly heat to the foaming starting temperature. The second zone is a main foaming zone, and the temperature in the second zone is set to 180°C-210°C. This zone is the core area of the decomposition of the foaming agent, the rapid nucleation and growth of the bubbles. The third zone is a setting zone, and the temperature in the third zone is set to 190°C-220°C. In this zone, the bubble structure is further stabilized and the foaming process is completed, and the micro-crosslinking of the polymer is promoted to improve the overall strength of the first film and the second film. The total residence time of the first film and the second film in the foaming oven is controlled to be 60-180 seconds to avoid insufficient foaming due to insufficient foaming time, or bubble closure or excessive stretching of the film body due to excessive foaming time. The first film and the second film that have completed foaming are immediately sent to a cooling roller for cooling, and the temperature of the surfaces of the first film and the second film is rapidly reduced to below 50°C to stabilize the bubble structure and prevent deformation due to residual heat on the surface of the film during subsequent winding. The surfaces of the cooled first film and second film are subjected to corona treatment with a power density of 5-15 W·min / m². Corona treatment can introduce polar groups and produce micro-etching on the surface of the first film and the second film, significantly improve the surface energy, and improve the subsequent adhesive strength. Finally, the first film and the second film that have completed the production are wound for subsequent use.

[0018] As Figure 1 shown, the adaptive flexible laminating part includes a hot press roller and a flexible support device, both of which are arranged on the rack, the hot press roller is internally provided with a heating system, the hot press roller is made of high-strength alloy steel roller, which has good wear resistance and corrosion resistance, the heating system is arranged as a multi-section electric heating pipe arranged along the length direction of the roller body, so as to realize the precise control of the temperature of the hot press roller, the two ends of the length direction of the hot press roller are fixed on the rack through heavy roller shaft, and the rotation of the hot press roller is driven by the servo motor through the speed reducer, so as to ensure the stable rotation of the hot press roller, the heating system is in communication connection with the central control system, the temperature required by the heating system is set through the central control system, so as to ensure that the heating roller can provide enough temperature to melt the adhesive, so as to ensure the stable compounding of the film one and the film two with the base layer, the hot press roller is correspondingly arranged with the flexible support device, and the hot press roller gap is formed between the two, the material to be compounded is placed on the flexible support device, the base layer coated with adhesive by the gluing machine is placed on the flexible support device, the film one or the film two is covered on the base layer, and the other side of the film one or the film two is in contact with the hot press roller, so that when the base layer and the film one and the film two pass through the hot press roller gap, the compounding between the film one and the film two and the base layer can be completed.

[0019] The flexible supporting device comprises a conveying belt and a plurality of pressure capsule groups, the conveying belt is arranged as an annular belt, the annular belt is arranged as a high-strength stainless steel wire woven net, through the arrangement of the material of the conveying belt, the conveying belt still has excellent strength and flexibility under high temperature, the conveying belt is controlled to rotate through two driving guide rollers arranged at the two ends of the length direction of the conveying belt, the driving guide rollers are also driven to rotate through servo motors, a mounting seat is arranged inside the conveying belt and between adjacent driving guide rollers, the base of the mounting seat is arranged on the ground, a plurality of pressure capsule groups are arranged on the top surface of the mounting seat and in contact with the bottom surface of the conveying belt, the pressure capsule group comprises a floating pressure capsule, a pressure sensor corresponding to the floating pressure capsule and a servo valve, the floating pressure capsule is arranged as a sealed cavity, the material of the floating pressure capsule is arranged as a multilayer flexible alloy bellows, so as to withstand high-frequency compression cycles, a plurality of floating pressure capsules are arranged in the length direction of the heat press roller, a plurality of floating pressure capsules are pre-installed on a small integrated template, a micro oil circuit is arranged in the template, a plurality of integrated templates are fixed on the mounting seat through bolts, and the oil circuit connection between the integrated template and the mounting seat is realized through a multi-channel hydraulic quick connector, the pressure sensor is arranged as a sputtering thin film pressure sensor, the sensing diaphragm of the pressure sensor extends into the floating pressure capsule and directly contacts the internal hydraulic medium, the servo valve is also fixedly connected to the mounting seat, and each mounting seat is connected to the servo valve through an independent hydraulic pipeline, an internal passage for the oil circuit is arranged in the mounting seat, wherein the main oil circuit is connected to the pump station of the constant pressure servo system, then the hydraulic oil is distributed to the servo valve connected to each pressure capsule through the internal passage, and finally the hydraulic oil controlled by the servo valve is delivered to the corresponding floating pressure capsule through the internal passage, so as to realize the expansion and contraction of the floating pressure capsule, when the type and thickness of the base layer are different, all the floating pressure capsules can be controlled to expand or contract at the same time, so as to ensure the stable stress of the base layer, when the surface of the sent base layer is uneven, the pressure received by the plurality of floating pressure capsules under the base layer is different, therefore, the floating pressure capsules at different positions can be adjusted according to the different pressures, the floating pressure capsules under the convex part will contract, and the floating pressure capsules under the concave part will expand to lift the base layer, so as to realize the local self-adaptation of the pressure, and thus the overall composite quality of the base layer is ensured.

[0020] The constant pressure servo system in the adaptive flexible laminating part includes an industrial PLC and a hydraulic pump station for providing stable system oil pressure, a plurality of servo valves and a plurality of pressure sensors are controlled by the constant pressure servo system, the constant pressure servo system is connected with the central control system through a communication bus, thereby receiving the preset pressure instruction, receiving the signals of all the pressure sensors, and independently controlling the action of each servo valve according to the signals, when the pressure of a certain place of the base layer is greater than the preset pressure because of the greater thickness, the corresponding servo valve will release pressure, so that the floating pressure bag shrinks, avoiding the situation that the plurality of protrusions are broken due to the greater pressure, when the pressure of a certain place of the base layer is smaller than the preset pressure, the corresponding servo valve will supplement the pressure, at this time the floating pressure bag will expand to lift the base layer, thereby ensuring the bonding strength.

[0021] As shown in Figure 1 An RFID system is arranged in the adaptive flexible laminating part, which is an automatic identification and data acquisition system based on radio frequency communication, mainly including an RFID electronic tag attached to the cores of the base layer roll and the first and second film rolls, each electronic tag is a microchip, which internally stores data of the roll material, including material type, specification, batch number, recommended process parameter range, etc., the electronic tag is a passive ultra-high frequency tag, with a working frequency range of 860-960 MHz, having the characteristics of long reading distance, fast reading speed and strong batch reading capacity, an RFID reader is arranged at the material feeding position of the production line, the reader emits radio frequency signals through an antenna to provide energy for the passive tag and receives the data feedback by the electronic tag, the reader uploads the read material data to the central control system through an industrial Ethernet protocol, the central control system adopts a distributed control structure, mainly including a main controller, a human-machine interface and an input / output module, the main controller is preferably an industrial programmable logic controller, responsible for executing the core control logic, processing the data transmitted by the RFID reader, running the process recipe, and issuing instructions to each execution unit, the human-machine interface is usually an industrial touch screen installed on the main console, used to display real-time production data (such as temperature in each zone, real-time pressure distribution, speed, tension), equipment status, alarm information, and allow operators to manually intervene, call recipes and fine-tune parameters, the control process of the central control system is that when the RFID reader reads the material information, it is immediately sent to the main controller, the main controller automatically calls the corresponding preset process parameters from the process database according to the received material type and specification, the main controller converts the called parameters into specific control instructions, which are issued to each execution mechanism through the communication network, and during the compounding process, the controller continuously receives feedback signals from each sensor, compares them with the set values, and adjusts the output in real time and dynamically through the built-in PID control algorithm, to ensure the stability and accuracy of the process.

[0022] The preparation process of the foamed and perforated film fabric is applied to the self-adaptive flexible laminated part, and comprises the following steps: S1. Reading the identification information of the base layer, film one and film two through the radio frequency identification system; S2. Stacking the film one, the adhesive and the base layer in sequence, and preheating and centering the stacked materials; S3. Guiding the materials treated in S2 to pass through the hot press roll gap formed by the self-adaptive flexible lamination and the hot press roll; S3.1 Heating and applying driving force to the materials treated in S2 through the hot press roll; S3.2. Real-time monitoring and adjusting the support force of each local area on the lower surface of the material through the constant pressure servo system. When the measured pressure of any local area is higher than the preset composite pressure, the corresponding driven pressure capsule group is controlled to release the medium to perform the lowering action. When the measured pressure of any local area is lower than the preset composite pressure, the corresponding driven pressure capsule group is controlled to supplement the medium to perform the lifting action; S4. Repeating the step S3 to composite the film two on the other side of the base layer, and finally aging, cooling and inspecting the base layer with the composite film one and film two, and then winding.

[0023] The foaming pore-forming film fabric is prepared by the above preparation process and comprises a fabric layer, wherein the fabric layer comprises a base layer and a film I and a film II fixedly connected on both sides of the thickness direction of the base layer, a plurality of protrusions I and a plurality of protrusions II are arranged on the film I and the film II respectively, the height of the protrusions I is between 0.05 mm and 0.2 mm, the height of the protrusions II is between 0.2 mm and 0.5 mm, the thickness of the film I is between 0.02 mm and 0.06 mm, the thickness of the film II is between 0.06 mm and 0.15 mm, the cross-sectional shape of the plurality of protrusions I and the plurality of protrusions II is arc-shaped, and a large number of air-filled micropores exist in the protrusions I and the protrusions II. Since air is a poor conductor of heat, the arrangement of the plurality of protrusions I and the plurality of protrusions II can slow down the conduction of external cold air to the inside, thereby ensuring good warmth retention of the fabric. The height of the protrusions II is greater than or equal to the height of the protrusions I. The side of the base layer on which the protrusions II are formed is arranged to face the body surface or contact the body surface, and the side of the base layer on which the protrusions I are formed is arranged to face the air. Since the diameter of the protrusions II is larger, the fabric can be better supported, so that a more stable layer of stationary air is formed between the fabric and the material in contact with the fabric. At the same time, the grooves between adjacent protrusions II also form stable air channels. Even if the fabric is subjected to external pressure, the air permeation channels will not be completely flattened, so that there is always stationary external air in the fabric, thereby enhancing the warmth retention effect of the fabric during use. The protrusions I, which are in contact with the air and have a smaller thickness, are more convenient for additional functional treatment in the subsequent process, thereby avoiding the case that the thickness of the fabric on both sides is large and too rigid, so that the fabric can deform along with the movement of the human body or along with the direction of external force, thereby ensuring the softness and comfort of the fabric during use.

[0024] The base layer is woven from composite yarns, and the composite yarns are modified polyester yarns to which graphene is added. The high structural strength and wear resistance of polyester itself are used to ensure the service life of the fabric as a whole, and the addition of graphene enables the fabric to have good antibacterial effect, thereby increasing the versatility of the fabric. A plurality of strands of modified polyester yarns are put into a twisting machine to form 30D composite yarns. By controlling the diameter of the yarns, a base layer with a thickness of 0.7 mm is woven, and the thermal conductivity coefficient of the base layer is 0.008. By reducing the thermal conductivity coefficient of the fabric itself, the amount of heat that can be transmitted through the fabric is reduced, thereby ensuring the heat insulation performance of the fabric and preventing the exchange of cold and hot air on both sides of the fabric. After the film I and the film II are combined on both sides of the base layer, the overall moisture permeability of the fabric can be ensured to be 8000 g / (m²·24h). While ensuring the warmth retention effect, some water vapor attached to the fabric can be discharged to the outside, and the base layer processed by the foaming pore-forming film process can have good low-temperature resistance, so that the fabric can still stably maintain its own performance at a temperature of -60°C.

[0025] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-described embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. An apparatus for making a bubble-vented coated fabric, characterized by: The film preparation part and the adaptive flexible laminating part are sequentially arranged, the film preparation part comprises an extruder for mixing and melting polymer, foaming agent and auxiliary agent, a casting device and a foaming oven; The adaptive flexible laminating part comprises a hot press roller and a flexible supporting device, the hot press roller is internally provided with a heating system, the hot press roller is oppositely arranged with the flexible supporting device, and a hot press roller gap is formed between the hot press roller and the flexible supporting device, the flexible supporting device comprises a conveying belt and a plurality of pressure capsule groups, the conveying belt is used for conveying a base layer and films I and II covering two sides of the base layer, the conveying belt is composed of a plurality of supporting belts, and the plurality of pressure capsule groups are correspondingly arranged below the plurality of supporting belts. The adaptive flexible laminating part is provided with a constant pressure servo system, the constant pressure servo system is connected with a single pressure capsule group, and is used for detecting the pressure in the single pressure capsule group and maintaining the pressure in the single pressure capsule group within a preset pressure value. The adaptive flexible laminating part is provided with a radio frequency identification system for reading identification information of the base layer, the film I and the film II, and a central control system, the central control system is in communication connection with the radio frequency identification system, the heating system and the constant pressure servo system, and the central control system automatically sets process parameters and controls execution of the constant pressure servo system based on the identification information.

2. Process for the preparation of a foamed apertured film fabric for making the self-adapting flexible laminate according to claim 1, characterized in that: The method comprises the following steps: S1. reading identification information of the base layer, the film I and the film II through the radio frequency identification system; S2. sequentially stacking the film I, an adhesive and the base layer, and preheating and centering the stacked materials; S3. guiding the materials treated in the S2. step to pass through a hot press roller gap formed by the hot press roller and the adaptive flexible laminating part; S3.

1. heating and applying a driving force to the materials treated in the S2. step through the hot press roller; S3.

2. monitoring and adjusting the support force borne by each local area of the lower surface of the materials in real time through the constant pressure servo system, discharging medium of the corresponding driven pressure capsule group to perform a lowering action when the measured pressure of any local area is higher than the preset composite pressure, and supplementing medium of the corresponding driven pressure capsule group to perform a lifting action when the measured pressure of any local area is lower than the preset composite pressure; S4. repeating the step S3. to composite the film II on the other side of the base layer, and finally aging, cooling and inspecting the base layer on which the film I and the film II are compounded, and then winding the base layer.

3. The process for making a bubble-vented coated fabric according to claim 2, wherein: The pressure capsule group comprises a floating pressure capsule, a pressure sensor and a servo valve corresponding to the floating pressure capsule, the floating pressure capsule is arranged as a closed flexible cavity, and the pressure sensor is used for monitoring the pressure in the corresponding floating pressure capsule in real time.

4. The process for making a bubble-vented coated fabric according to claim 3, wherein: The plurality of pressure capsule groups are in communication with the constant pressure servo system through independent servo valves, the constant pressure servo system receives feedback signals from the pressure sensors in the plurality of pressure capsule groups, and controls opening and closing of the servo valves to perform the functions of discharging and supplementing medium.

5. A bubble-vented coated fabric made by the process of any one of claims 2 to 4, characterized in that: The application relates to a fabric layer, which comprises a base layer and a film I and a film II fixedly connected on both sides of the thickness direction of the base layer, wherein a plurality of protrusions I and a plurality of protrusions II are arranged on the film I and the film II respectively, the height of the protrusions I is between 0.05 mm and 0.2 mm, the height of the protrusions II is between 0.2 mm and 0.5 mm, the thickness of the film I is between 0.02 mm and 0.06 mm, the thickness of the film II is between 0.06 mm and 0.15 mm, and the base layer is knitted by composite yarns, wherein the composite yarns are modified polyester yarns with added graphene.

6. The bubble-vented coated fabric of claim 5, wherein: When the thickness of the fabric layer is 0.7 mm, the thermal conductivity coefficient is 0.

008.

7. The process for making a bubble-vented coated fabric according to claim 5, wherein: The moisture permeation amount of the fabric layer is 8000 g / (m2*24h).

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