Micro-glue compounding device and method for micro melt-blown cotton fabric with low thermal resistance loss

Abstract

The invention discloses a micro-glue compounding device and method for a micro melt-blown cotton fabric with low thermal resistance loss. The device comprises a hot air spray glue gun mechanism, a heating mechanism, an air pressure mechanism, a loom fabric feeding mechanism, a melt-blown cotton feeding mechanism and a composite fabric discharging mechanism, a glue spraying composite area is arranged at the joint of the loom fabric feeding mechanism, the melt-blown cotton feeding mechanism and the composite fabric discharging mechanism; the hot air spraying glue gun mechanism comprises a glue gun with a hot melt glue micro-particle size atomization glue spraying function, the glue gun is responsible for atomization glue spraying of the weaving machine fabric, and the glue spraying angle of the glue gun is an acute angle; the heating mechanism comprises an infrared thermal device and is responsible for heating and preserving heat of the glue spraying composite area; the air pressure mechanism comprises a positive pressure air duct with the function of adjusting the air outlet direction, the air pressure, the air volume and the air temperature, and the positive pressure air duct is responsible for providing attaching force with set pressure and angle for the fine melt-blown cotton. According to the invention, the conventional concept of surface compounding is changed, and layered compounding of fibers is focused on, so that the purpose of reducing the heat resistance loss in the compounding process is achieved.

Description

Technical Field

[0001] This invention belongs to the field of textile machinery technology, specifically relating to a micro-adhesive composite device and method for micro-meltblown cotton fabric with low thermal resistance loss. Background Technology

[0002] Meltblown cotton is made primarily of polypropylene, formed through hot air stretching and self-bonding. The fiber diameter can reach 1-5 micrometers, with numerous pores, a loose structure, and good wrinkle resistance. The unique capillary structure of the ultrafine fibers increases the number of fibers and surface area per unit area, giving meltblown cotton excellent filtration, shielding, heat insulation, and oil absorption properties. It can be used in air and liquid filtration materials, isolation materials, absorbent materials, mask materials, thermal insulation materials, oil-absorbing materials, and wiping cloths. Meltblown cotton can also be combined with woven fabrics to create new types of thermal insulation fabrics.

[0003] Because meltblown cotton fibers are extremely fine, making it very light and thin, the fine and microfibers within the meltblown cotton, as well as its unique capillary structure, are easily damaged during the lamination process with woven fabrics. This results in a significant reduction in the effectiveness of the laminated meltblown cotton, with a thermal resistance value noticeably lower than the unlaminated cotton, sometimes even losing most of its thermal resistance, thus failing to achieve the initial goal of creating a new type of thermal insulation fabric. Meltblown cotton, being very light and thin, can be perfectly suited for lamination with lightweight fabrics to create new lightweight thermal insulation fabrics, such as 40g / m². 2 The thickness of meltblown cotton is only about 0.1~0.2mm. If the adhesive layer is too thick during lamination, it will submerge the meltblown cotton and cause the original thermal resistance of the meltblown cotton to be completely lost. However, if the adhesive layer is too thin, the lamination may not be strong and may not meet the requirements for water washing and delamination fastness after multiple washes.

[0004] Currently, hot melt adhesives are widely used in the production of composite fabrics, and there are many lamination methods: hot melt adhesive powder, hot melt adhesive film, hot melt adhesive web, hot melt adhesive spraying, etc. These are commonly used in the garment industry, especially in various composite linings. However, these lamination concepts are all "surface" lamination, meaning the bonding of the two materials' surfaces. As long as the surfaces of the two textile materials can be flat and firmly bonded, thermal resistance is not a concern. For ultra-light and ultra-thin meltblown cotton, the ultra-fine fibers and their fiber structure are key to its high thermal resistance. To avoid losing thermal resistance during the lamination process, the concept of "fiber" lamination and "fiber" bonding needs to be established, meaning lamination and bonding that minimizes damage to the fiber structure. Therefore, new low-loss thermal resistance lamination devices and methods based on the concept of "fiber" bonding are needed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a micro-adhesive composite device and method for micro-meltblown cotton fabric with low thermal resistance loss. It replaces the traditional "surface" composite concept with an innovative "fiber" layer composite concept, thereby reducing thermal resistance loss during the composite process.

[0006] To solve the above-mentioned technical problems and achieve the above-mentioned technical effects, the present invention is implemented through the following technical solution: A micro-adhesive composite device for micro-fine meltblown cotton fabric with low thermal resistance loss includes a hot air spray glue gun mechanism, a heating mechanism, an air pressure mechanism, a fabric feeding mechanism on a loom, a micro-fine meltblown cotton feeding mechanism, and a composite fabric discharging mechanism. The initial stroke of the composite fabric discharging mechanism is connected to the end stroke of the loom fabric feeding mechanism and the end stroke of the micro meltblown cotton feeding mechanism, respectively. A spray adhesive composite area for bonding the loom fabric and the micro meltblown cotton is formed between the end stroke of the loom fabric feeding mechanism, the end stroke of the micro meltblown cotton feeding mechanism and the initial stroke of the composite fabric discharging mechanism. The hot air spray glue gun mechanism includes a glue gun with a microparticle atomization function for hot melt adhesive. The glue gun is located above the end of the stroke of the horizontal feeding mechanism of the fabric of the loom, and is tilted downwards and aimed at the glue spraying and bonding area. It is responsible for spraying the fabric of the loom with microparticle atomization of hot melt adhesive as it enters the glue spraying and bonding area. The glue spraying angle formed between the glue gun spraying direction and the upper surface of the fabric of the loom is greater than 0 degrees and less than 90 degrees. The heating mechanism includes an infrared heating device, which is located above the glue gun and angled downwards toward the glue spraying and bonding area, and is responsible for heating and keeping the glue spraying and bonding area warm. The air pressure mechanism includes a positive pressure air duct with adjustable air outlet direction, air pressure, air volume and air temperature. The positive pressure air duct is located above the initial end of the stroke of the composite fabric discharge mechanism and is tilted downwards to be aligned with the adhesive spraying area. It is responsible for providing the micro meltblown cotton to be bonded to the fabric of the loom with a set pressure and angle of adhesion.

[0007] Furthermore, the fabric feeding mechanism of the loom is a horizontal fabric feeding device, the micro-meltblown cotton feeding mechanism is a vertical micro-meltblown cotton feeding mechanism, and the composite fabric discharging mechanism is a horizontal composite fabric discharging device. The conveying lines of the loom fabric, the micro-meltblown cotton, and the composite fabric form an inverted T-shaped structure. The glue gun and the positive pressure air duct are arranged opposite each other on the left and right sides of the meltblown surface conveying line.

[0008] Furthermore, a partition plate is provided between the positive pressure air duct and the infrared heating device to isolate the positive pressure air duct and the infrared heating device, and the micro-fine meltblown cotton is fed along the side surface of the partition plate facing the positive pressure air duct.

[0009] Furthermore, the nozzle of the glue gun is a parallel nozzle, and the width of the parallel nozzle is greater than the width of the micro meltblown cotton.

[0010] Furthermore, the air outlet of the positive pressure air duct is a groove-shaped air outlet, and the width of the groove-shaped air outlet is greater than the width of the micro meltblown cotton.

[0011] Furthermore, the infrared heating device is an infrared heating tube, an infrared heating lamp, or an infrared heating plate, and the width of the infrared heating tube, the infrared heating lamp, or the infrared heating plate is greater than the width of the micro-meltblown cotton.

[0012] Furthermore, the hot air spray glue gun mechanism also includes a hot compressed air supply device for supplying compressed air required for heating the hot melt glue to the glue gun.

[0013] A micro-adhesive lamination method for a micro-adhesive lamination device for the above-mentioned low thermal resistance meltblown cotton fabric includes the following steps: Step 1) The heat-formed fabric is fed horizontally and uniformly from left to right towards the spray adhesive bonding area with the outer surface (front) facing down and the inner surface (back) facing up. At the same time, the micro meltblown cotton is fed vertically and uniformly from top to bottom towards the spray adhesive bonding area with the inner surface facing left and the outer surface facing right. Step 2) During the movement of the fabric on the loom, the hot air spray glue gun mechanism sprays atomized hot melt glue particles onto the inner surface of the fabric that has just entered the glue spraying and bonding area through the glue gun at a spray angle of less than 90 degrees and greater than 0 degrees; the spray angle is the angle formed by the spraying direction of the glue gun and the inner surface of the fabric. Step 3) While the hot air spray glue gun mechanism is spraying glue, the heating mechanism heats and keeps the glue-spraying composite area warm through an infrared heating device; Step 4) During the movement of the micro meltblown cotton, the wind pressure mechanism blows hot air with a set temperature through the positive pressure air duct at a set pressure and angle onto the outer surface of the micro meltblown cotton that has just entered the adhesive bonding area, so that the fibers in the meltblown surface are gently and evenly pressed onto the loom fabric that has been sprayed with atomized hot melt adhesive particles, thus completing the bonding and forming a composite fabric. Step 5) The composite fabric is conveyed horizontally and at a uniform speed from left to right from the spray adhesive bonding area through the composite fabric discharge mechanism.

[0014] Furthermore, the hot air spray glue gun mechanism heats the hot melt adhesive at a temperature of 175°C and dispenses 1.5 g / m³ of adhesive. 2 The particle size of the hot melt adhesive particles after atomization by the glue gun is 20-50μm, and the heating temperature of the spray adhesive composite area by the infrared heating device is 85℃.

[0015] Furthermore, the blowing angle formed between the blowing direction of the positive pressure air duct and the upper surface of the composite fabric is greater than 0 degrees and less than 90 degrees, the air pressure of the positive pressure air duct is 0.5-1 kPa, and the temperature is 30℃.

[0016] The beneficial effects of this invention are as follows: 1. This invention overcomes the shortcomings of traditional meltblown cotton and woven fabric lamination methods, which only focus on bonding strength and neglect thermal resistance loss. It achieves microparticle atomization of the hot melt adhesive and relatively prolongs the open time of the adhesive particles within the insulated lamination zone, allowing the particles to penetrate the fabric fibers. Controlling the adhesive output ensures uniform dispersion of the microparticles on the bonding surface. The tilted glue gun nozzle shortens the distance to the lamination "sealing point," reducing the travel distance of the adhesive particles before lamination, while maintaining temperature and viscosity upon contact with the micro-meltblown cotton fibers. The gentle pressure from the air pressure mechanism ensures that the surface fibers of the bonding surface can adhere to the microparticles with a certain degree of pressure without damaging the fiber structure of the micro-meltblown cotton itself, and have a certain ability to embed into fabric gaps, subsequently curing under the action of cold air. The ultrafine fibers and special fiber structure of the micro-meltblown cotton itself are key to thermal resistance. This invention's lamination method changes the previous concept of "surface" lamination, focusing on "fiber" level lamination, thereby reducing thermal resistance loss during the lamination process.

[0017] 2. The hot melt adhesive of this invention becomes a liquid with good fluidity at 175℃. After being fed into the glue gun, it is atomized and sprayed out. The particle size of the atomized particles is approximately 20-50µm. By using heated compressed air, the particle size of the atomized particles can be further reduced to the 20-30µm range. Furthermore, these tiny adhesive particles do not cool down quickly in the heated composite zone, thus wetting the fabric fibers. Controlling the glue gun flow rate ensures that evenly distributed micro-adhesive particles are left on the moving fabric surface. The micro-meltblown cotton body being composited gently adheres to the micro-adhesive particles under the action of the air pressure device, with a certain holding pressure, so that the meltblown cotton fibers in contact with the micro-adhesive particles bond with the fabric fibers wetting the micro-adhesive particles, and there is a gap interlocking. The air temperature of the air pressure device is relatively low, which can accelerate the curing of the micro-adhesive particles. The air pressure device forms a stable composite "adhesion", which is similar to the "pressure roller" of a traditional composite device. The air pressure device does not damage the special fiber structure of the micro-meltblown cotton body, thereby reducing the thermal resistance loss in the composite process.

[0018] 3. In traditional meltblown machines, the glue gun is usually perpendicular to the fabric surface to be sprayed (i.e., the spray angle is usually 90 degrees) to achieve uniformity of the sprayed surface. In this invention, the spray angle is set to an acute angle, which allows the nozzle to be closer to the spray bonding area. As a result, the temperature of the atomized micro-particles is still high when they are applied to the fabric, which is beneficial to the bonding of the micro-meltblown cotton fibers and the fabric fibers of the loom. In addition, the acute angle setting allows the atomized micro-particles to have a larger wetting area when they are applied to the fabric, and further reduces the thickness of the particles, thereby obtaining a better micron-level fiber bonding effect. That is, the high thermal resistance fiber structure of the micro-meltblown cotton will not be damaged by a thick glue layer.

[0019] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram illustrating the structural principle of the micro-adhesive composite device for the low thermal resistance and loss micro-meltblown cotton fabric of the present invention.

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the micro-adhesive composite device for the low thermal resistance and loss micro-meltblown cotton fabric of the present invention.

[0022] In the diagram: 1. Composite fabric; 2. Positive pressure air duct; 3. Microfiber meltblown cotton; 4. Separator; 5. Infrared heating device; 6. Glue gun; 7. Loom fabric. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the invention's purpose, features, and advantages. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but are merely illustrative of the essential spirit of the invention's technical solution.

[0024] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0025] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0026] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0027] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0028] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example 1

[0029] See Figure 1 and Figure 2 As shown, a micro-adhesive composite device for a low-thermal-resistance micro-meltblown cotton fabric includes a hot air spray glue gun mechanism, a heating mechanism, an air pressure mechanism, a fabric feeding mechanism for a loom, a meltblown cotton feeding mechanism, and a composite fabric discharging mechanism.

[0030] The fabric feeding mechanism of the loom can be a horizontal fabric feeding device, the micro-meltblown cotton feeding mechanism can be a vertical meltblown cotton feeding mechanism, and the composite fabric discharging mechanism can be a horizontal composite fabric discharging device. The conveying lines of the loom fabric 7, the micro-meltblown cotton 3, and the composite fabric 1 form an inverted T-shaped structure. The initial stroke of the composite fabric discharging mechanism is connected to the end strokes of the loom fabric feeding mechanism and the micro-meltblown cotton feeding mechanism, respectively, and a spray-bonded bonding area for bonding the loom fabric 7 and the micro-meltblown cotton 3 is formed between the end strokes of the loom fabric feeding mechanism, the end strokes of the micro-meltblown cotton feeding mechanism, and the initial stroke of the composite fabric discharging mechanism.

[0031] The hot air spray glue gun mechanism includes a glue gun 6 with a microparticle atomization function for hot melt adhesive. The glue gun 6 is located above the end of the stroke of the horizontal feeding mechanism of the fabric of the loom and is tilted downwards and aimed at the glue spraying and bonding area. It is responsible for spraying the fabric 7 of the loom that has just entered the glue spraying and bonding area with microparticle atomization of hot melt adhesive.

[0032] The glue spraying direction of the glue gun 6 forms a glue spraying angle α with the upper surface of the fabric 7, which is greater than 0 degrees and less than 90 degrees. Preferably, the glue spraying angle α can be set to 75 degrees.

[0033] The nozzle of the glue gun 6 can be a parallel nozzle, and the width of the parallel nozzle is greater than the width of the micro meltblown cotton 3.

[0034] The hot air spray glue gun mechanism also includes a hot compressed air supply device for supplying compressed air required for heating the hot melt glue to the glue gun 6.

[0035] The heating mechanism includes an infrared heating device 5, which is located above the glue gun 6 and angled downwards toward the glue spraying and bonding area, and is responsible for heating and keeping the glue spraying and bonding area warm.

[0036] The infrared heating device 5 can be an infrared heating tube, an infrared heating lamp, or an infrared heating plate. The width of the infrared heating tube, the infrared heating lamp, or the infrared heating plate is greater than the width of the micro-meltblown cotton 3.

[0037] When the conveying lines of the fabric 7, the micro-meltblown cotton 3, and the composite fabric 1 form an inverted T-shaped structure, the glue gun 6 and the positive pressure air duct 2 are arranged opposite each other on the left and right sides of the conveying line of the meltblown surface 3.

[0038] The air pressure mechanism includes a positive pressure air duct 2 with adjustable air outlet direction, air pressure, air volume and air temperature. The positive pressure air duct 2 is located above the initial end of the stroke of the composite fabric discharge mechanism and is tilted downwards to be aligned with the adhesive spraying area. It is responsible for providing a certain pressure and angle of adhesion to the micro meltblown cotton 3 that will be bonded to the fabric 7 of the loom.

[0039] The blowing angle β formed between the blowing direction of the positive pressure air duct 2 and the upper surface of the composite fabric 1 is greater than 0 degrees and less than 90 degrees. Preferably, the blowing angle β can be set to 55 degrees.

[0040] The positive pressure air duct 2 has a groove-shaped air outlet, and the width of the groove-shaped air outlet is greater than the width of the micro meltblown cotton 3.

[0041] A partition plate 4 can also be provided between the positive pressure air duct 2 and the infrared heating device 5 to isolate the positive pressure air duct 2 and the infrared heating device 5.

[0042] After the partition plate 4 is set, the micro meltblown cotton 3 can be fed downward along the side surface of the partition plate 4 facing the positive pressure air duct 2.

[0043] In this embodiment, the woven fabric 7, after heat shaping, is in a state awaiting lamination. The front side of the woven fabric 7 faces down as the outer surface, and the reverse side faces up as the inner surface, moving at a constant speed from left to right. The infrared heating device 5 maintains the temperature of the adhesive spraying lamination area within a suitable temperature range. The partition plate 4 isolates the adhesive spraying lamination area, the infrared heating device 5, and the positive pressure air duct 2. The glue gun 6 heats the hot melt adhesive and atomizes it before spraying it out. The glue gun 6 uses heated compressed air, which makes the atomized particle size of the hot melt adhesive smaller. The angle between the glue gun 6 and the woven fabric 7 is set to an acute angle of less than 90 degrees, so that the glue application position of the woven fabric 7 is closer to the lamination position. The positive pressure air duct 2 blows hot air of a certain temperature at a certain pressure and angle onto the micro-meltblown cotton 3, so that the fibers in the micro-meltblown cotton 3 are gently and evenly pressed onto the woven fabric 7 that has been sprayed with adhesive particles, completing the lamination and finally forming the composite fabric 1. Example 2

[0044] See Figure 1 and Figure 2 As shown, a micro-adhesive lamination method for a micro-adhesive lamination device for a low-thermal-resistance micro-meltblown cotton fabric includes the following steps: Step 1: The heat-formed woven fabric 7, with its outer surface (front) facing down and inner surface (back) facing up, is fed horizontally and uniformly from left to right towards the spray adhesive bonding area via the woven fabric feeding mechanism. At the same time, the micro meltblown cotton 3, with its inner surface facing left and outer surface facing right, is fed vertically and uniformly from top to bottom towards the spray adhesive bonding area via the meltblown cotton feeding mechanism.

[0045] Preferably, the fabric 7 is a khaki fabric, and the heat-forming temperature of the khaki fabric is 100°C.

[0046] Preferably, the micro-fine meltblown cotton 3 uses 80g / m 2 Meltblown cotton.

[0047] Preferably, the fabric speed of both the loom fabric 7 and the micro-meltblown cotton 3 is set to 10m / min.

[0048] Step 2: During the movement of the fabric 7 on the loom, the hot air spray glue gun mechanism sprays atomized hot melt glue particles with a particle size of about 20-50μm onto the inner surface of the fabric 7 that has just entered the glue spraying and bonding area through the glue gun 6 at a spray angle α of less than 90 degrees and greater than 0 degrees.

[0049] The spray angle α is the angle formed by the spray direction of the glue gun 6 and the inner surface of the fabric 7 of the loom.

[0050] Preferably, the hot air spray glue gun mechanism heats the hot melt adhesive at a temperature of 175°C and dispenses 1.5 g / m³ of adhesive. 2 .

[0051] Preferably, the heating temperature of the hot compressed air connected to the glue gun 6 is 100°C and the pressure is 0.75 MPa.

[0052] Preferably, the glue gun 6 can be set to a glue spraying angle α of 75 degrees.

[0053] Step 3: While the hot air spray glue gun mechanism is spraying glue, the heating mechanism heats and keeps the glue-spraying composite area warm through the infrared heating device 5.

[0054] Preferably, the infrared heating device 5 heats the adhesive spraying composite area at a temperature of 85°C.

[0055] Step 4: During the movement of the micro-meltblown cotton 3, the wind pressure mechanism blows hot air with a certain temperature at a certain pressure and a certain blowing angle β onto the outer surface of the micro-meltblown cotton 3 that has just entered the spray adhesive composite area through the positive pressure air duct 2. This causes the fibers in the meltblown surface 3 to be gently and evenly pressed onto the loom fabric 7 that has been sprayed with atomized hot melt adhesive particles, thus completing the composite and forming the composite fabric 1.

[0056] The blowing angle β is the angle formed between the blowing direction of the positive pressure air duct 2 and the upper surface of the composite fabric 1.

[0057] The positive pressure duct 2 has a wind pressure of 0.5-1 kPa and a temperature of 30℃.

[0058] Preferably, the blowing angle β can be set to 55 degrees.

[0059] Step 5: The composite fabric is conveyed horizontally and at a uniform speed from left to right out of the spray adhesive bonding area using the composite fabric discharge mechanism.

[0060] Preferably, the fabric speed of the composite fabric 1 is set to 10m / min.

[0061] In this embodiment, the hot melt adhesive becomes a liquid with good fluidity at 175°C. After being fed into the glue gun, it is atomized and sprayed out. The particle size of the atomized particles is approximately 20-50µm. Using heated compressed air can further reduce the particle size to the 20-30µm range. These tiny adhesive particles do not cool down quickly in the heated lamination zone, thus wetting the fabric fibers. Controlling the glue gun flow rate ensures that evenly distributed micro-adhesive particles are left on the moving fabric surface. The meltblown cotton to be laminated gently adheres to the micro-adhesive particles under the action of the air pressure device, with a certain holding pressure, allowing the meltblown cotton fibers in contact with the micro-adhesive particles to bond with the fabric fibers wetted by the micro-adhesive particles, creating a gap-like interlocking. The air temperature of the air pressure mechanism is relatively low, which accelerates the curing of the hot melt adhesive particles. The air pressure mechanism forms a stable lamination "sealing point," similar to the "pressure roller" in traditional lamination devices. The air pressure mechanism does not damage the special fiber structure of the meltblown cotton, thereby reducing thermal resistance loss during the lamination process.

[0062] In traditional meltblown machines, the glue gun is usually perpendicular to the fabric surface to be sprayed (i.e., the spray angle is usually 90 degrees) to achieve uniformity of the sprayed surface. In this invention, the spray angle is set to an acute angle (preferably 75 degrees), which allows the nozzle of the glue gun to be closer to the spray bonding area. As a result, the temperature of the atomized hot melt adhesive particles remains high when they are applied to the fabric, which is beneficial for the bonding between the meltblown cotton fibers and the fabric fibers of the loom. Furthermore, the acute angle setting allows the atomized hot melt adhesive particles to have a larger wetting area when they are applied to the fabric, and further reduces the thickness of the hot melt adhesive particles, thereby obtaining a better micron-level fiber bonding effect. That is, the high thermal resistance fiber structure of the meltblown cotton will not be damaged by a thicker adhesive layer.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A microgel composite device for low thermal resistance micro-fine melt-blown cotton fabric, characterized by: The hot air spray glue gun mechanism, the heating mechanism, the air pressure mechanism, the fabric feeding mechanism, the melt-blown cotton feeding mechanism and the composite fabric discharging mechanism are arranged in the order of the hot air spray glue gun mechanism, the heating mechanism, the air pressure mechanism, the fabric feeding mechanism, the melt-blown cotton feeding mechanism and the composite fabric discharging mechanism. The travel initial end of the composite fabric discharging mechanism is respectively connected with the travel terminal end of the fabric feeding mechanism and the travel terminal end of the melt-blown cotton feeding mechanism, and the travel terminal end of the fabric feeding mechanism, the travel terminal end of the melt-blown cotton feeding mechanism and the travel initial end of the composite fabric discharging mechanism form a glue spraying composite area for the fabric and the melt-blown cotton. The hot air spray glue gun mechanism includes a glue gun (6) with the function of micro-particle size atomization glue spraying, the glue gun (6) is located above the travel terminal end of the fabric horizontal feeding mechanism and is inclined downward to the glue spraying composite area, and is responsible for the micro-particle size atomization glue spraying of the fabric (7) entering the glue spraying composite area. The heating mechanism includes an infrared heating device (5), the infrared heating device (5) is located above the glue gun (6) and is inclined downward to the glue spraying composite area, and is responsible for heating and keeping warm of the glue spraying composite area. The air pressure mechanism includes a positive pressure air cylinder (2) with the functions of air outlet direction, air pressure, air volume, air temperature adjustment, the positive pressure air cylinder (2) is located above the travel initial end of the composite fabric discharging mechanism and is inclined downward to the glue spraying composite area, and is responsible for providing the melt-blown cotton (3) to be bonded with the fabric (7) with a set pressure and angle of fit.

2. The micro-gel complexing device for low thermal resistance micro-fine melt-blown cotton fabric according to claim 1, characterized in that: The fabric feeding mechanism is a fabric horizontal feeding device, the melt-blown cotton feeding mechanism is a melt-blown cotton vertical feeding device, the composite fabric discharging mechanism is a composite fabric horizontal discharging device, the fabric (7) conveying line, the melt-blown cotton (3) conveying line and the composite fabric (1) conveying line form an inverted T-shaped structure, and the glue gun (6) and the positive pressure air cylinder (2) are arranged on the left and right sides of the melt-blown fabric (3) conveying line.

3. The micro-gel complexing device for low thermal resistance micro-fine melt-blown cotton fabric of claim 1, wherein: A partition plate (4) is arranged between the positive pressure air cylinder (2) and the infrared heating device (5) to isolate the positive pressure air cylinder (2) and the infrared heating device (5), and the melt-blown cotton (3) is fed against the side surface of the partition plate (4) facing the positive pressure air cylinder (2).

4. The micro-gel complexing device for low thermal resistance micro-fine melt-blown cotton fabric of claim 1, wherein: The nozzle of the glue gun (6) is a parallel nozzle, and the width of the parallel nozzle is greater than the width of the melt-blown cotton (3).

5. The micro-gel complexing device for low thermal resistance micro-fine melt-blown cotton fabric of claim 1, wherein: The air outlet of the positive pressure air cylinder (2) is a slot-shaped air outlet, and the width of the slot-shaped air outlet is greater than the width of the melt-blown cotton (3).

6. The micro-gel complexing device for low thermal resistance micro-fine melt-blown cotton fabric of claim 1, wherein: The infrared heating device (5) is an infrared heating tube, an infrared heating lamp or an infrared heating plate, and the width of the infrared heating tube, the infrared heating lamp or the infrared heating plate is greater than the width of the melt-blown cotton (3).

7. The micro-gel complexing device for low thermal resistance micro-fine melt-blown cotton fabric of claim 1, wherein: The hot air spray glue gun mechanism further comprises a hot compressed air supply device for supplying compressed air required for heating the hot melt adhesive to the glue gun (6).

8. A microencapsulation method of a microencapsulation device for a low thermal resistance fine melt-blown cotton fabric of claims 1 to 7, characterized in that, The method comprises the following steps: Step 1) The heat-shaped fabric (7) is horizontally and uniformly transported from left to right towards the glue spraying and compounding area by a fabric feeding mechanism, with the outer surface facing down and the inner surface facing up, while the micro-fine melt-blown cotton (3) is vertically and uniformly transported from top to bottom towards the glue spraying and compounding area by a melt-blown cotton feeding mechanism, with the inner surface facing left and the outer surface facing right; Step 2) During the movement of the fabric (7), the hot air spray glue gun mechanism sprays the inner surface of the fabric (7) entering the glue spraying and compounding area with atomized hot melt adhesive particles through the glue gun (6) at a spraying angle of less than 90 degrees and greater than 0 degrees; the spraying angle is the included angle between the spraying direction of the glue gun (6) and the inner surface of the fabric (7); Step 3) At the same time of spraying by the hot air spray glue gun mechanism, the heating mechanism heats and keeps warm the glue spraying and compounding area by the infrared heating device (5); Step 4) During the movement of the micro-fine melt-blown cotton (3), the wind pressure mechanism blows hot air with a set temperature to the outer surface of the micro-fine melt-blown cotton (3) entering the glue spraying and compounding area at a set pressure and angle through the positive pressure air cylinder (2), so that the fibers in the melt-blown surface (3) are gently and uniformly pressed towards the fabric (7) that has been sprayed with atomized hot melt adhesive particles, completing the compounding and forming the compounded fabric (1); Step 5) The compounded fabric (1) is horizontally and uniformly transported out of the glue spraying and compounding area from left to right by a compounded fabric discharging mechanism.

9. The microencapsulation process according to claim 8, wherein: The heating temperature of the hot air spray glue gun mechanism to the hot melt adhesive is 175 ℃, and the glue output is 1.5 g / m 2 The particle size of the hot melt adhesive particles atomized by the glue gun (6) is 20-50 μm, and the heating temperature of the infrared heating device (5) to the glue spraying composite area is 85 ℃.

10. The microencapsulation process according to claim 8, wherein: The blowing direction of the positive pressure air cylinder (2) and the upper surface of the compounded fabric (1) form a blowing angle greater than 0 degrees and less than 90 degrees, and the air pressure of the positive pressure air cylinder (2) is 0.5-1 kPa and the temperature is 30℃.

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