Continuous phase-change temperature-control microcapsule sock after-finishing process

Abstract

The invention provides a continuous phase-change temperature-control microcapsule sock after-finishing process, which belongs to the technical field of textile dyeing and finishing, and comprises the following steps: S1, padding; s2, performing drying; the step S1 comprises the following sub-steps: first-time phase change temperature control is capsule finishing liquid spraying and pre-osmotic pressure rolling, second-time phase change temperature control is capsule finishing liquid spraying and main osmotic pressure rolling, and third-time phase change temperature control is capsule finishing liquid spraying and sizing rolling; the step S2 comprises first-time drying, second-time drying and third-time drying. Compared with a traditional technology, the post-finishing technology is higher in efficiency, and it can be guaranteed that the content of phase-change temperature-control microcapsules in all batches of socks is consistent.

Description

Technical Field

[0001] The present invention relates to the technical field of textile dyeing and finishing, and in particular to a continuous phase-change temperature-controlled microcapsule socks finishing process. Background Art

[0002] Socks are essential for daily life. Wearing them for extended periods inside shoes can easily lead to heat and sweating, foot odor, and even various foot diseases. Therefore, adding functional features to socks is essential, such as antibacterial treatments, deodorizing treatments, cooling treatments, and phase-change microcapsule treatments.

[0003] However, unlike continuous finishing techniques for fabrics, socks are processed intermittently through a soaking-dehydration-drying process. The typical process involves weighing a certain amount of socks, soaking them in a prepared functional finishing solution, and then using a centrifugal dehydrator to remove excess finishing solution before drying them in a drum dryer to set the shape. While simple, this method is not continuous, inefficient, and labor-intensive. Furthermore, it presents several challenges: 1. Waste of finishing liquid. Because some functional components in the finishing liquid have a certain affinity for fibers, the concentration of functional components in the finishing liquid that has been soaked in socks will be reduced. If the next batch of socks is soaked again, the proportion of functional components in the next batch of socks will be much lower, and the function will be greatly reduced. In order to ensure the uniformity of the proportion, the soaked finishing liquid cannot be reused. This will cause serious waste of materials and put a lot of pressure on the subsequent sewage treatment.

[0004] During the dehydration process, a centrifugal dehydrator is used. After soaking, batches of socks are placed in the dehydrator. Some socks end up on the outside of the dehydrator, while others end up on the inside. During the dehydration process, even at the same spin speed, the linear speeds on the outside and inside vary, leading to significant differences in the degree of dehydration. A test showed that for a 100g sock, the outside weight after dehydration was approximately 145g, while the inside weight reached 195g, a significant difference. These two issues can lead to batch-to-batch variations in the functional properties of socks, and even within a batch of socks, functional variations can occur. In the face of increasingly fierce market competition, such inconsistent functional products not only lack competitiveness but also undermine market and customer confidence. Therefore, efficiently and economically integrating various functionalities into socks is an urgent challenge for the textile industry. Summary of the Invention

[0005] The purpose of the present invention is to provide a continuous phase-change temperature-controlled microcapsule socks finishing process.

[0006] In order to solve the above-mentioned technical problems, the purpose of the present invention is achieved as follows: A continuous phase-change temperature-controlled microcapsule sock finishing process comprises the following steps: S1, padding; S2, drying; Said step S1 comprises: the first phase change temperature control is capsule finishing liquid spraying, pre-osmotic rolling, the second phase change temperature control is capsule finishing liquid spraying, main osmotic rolling, and the third phase change temperature control is capsule finishing liquid spraying and shaping rolling; The pressure of the pre-infiltration rolling is 0.2-0.3 MPa; the pressure of the main infiltration rolling is 0.5-0.8 MPa; the pressure of the shaping rolling is 0.1-0.2 MPa; The step S2 includes: first drying, second drying and third drying; the drying temperature of the first drying is 80-100°C; the drying temperature of the second drying is 105-115°C; and the drying temperature of the third drying is 90-95°C.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme, the step S and the step S are implemented by a continuous finishing device; the continuous finishing device includes a continuous conveying system, a uniform spraying system and a drying system; The continuous conveying system includes a frame; a porous conveyor belt is provided on the frame; the porous conveyor belt is driven by a drive motor and has a controllable speed; three sets of spaced-apart pressing assemblies are provided on the porous conveyor belt; the pressing assemblies include two spaced-apart pressing rollers and a pressing belt sleeved outside the pressing rollers; a pressing zone is formed between the pressing belt and the porous conveyor belt; The uniform spraying system includes nozzles arranged on the side of the three groups of pressing assemblies away from the sock conveying direction; The drying system includes a drying conveyor belt and an oven; the drying conveyor belt passes through the oven, and one end extends to the end of the porous conveyor belt to receive socks; the oven is divided into three spaces, corresponding to the first drying, second drying and third drying respectively.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme, it also includes a residual liquid circulation system; the residual liquid circulation system includes a residual liquid collecting tank; the residual liquid collecting tank is arranged below the porous conveyor belt to collect the phase change temperature-control microcapsule finishing liquid extruded by pressing; the residual liquid collecting tank is connected to the transfer configuration box; the transfer configuration box receives the phase change temperature-control microcapsule finishing liquid collected by the residual liquid collecting tank, and is internally provided with a microcapsule concentration online monitoring module and a microcapsule automatic compensation device; the microcapsule concentration online monitoring module monitors the concentration of phase change temperature-control microcapsules in the phase change temperature-control microcapsule finishing liquid in real time; the automatic compensation device dynamically compensates the concentration of phase change temperature-control microcapsules in the phase change temperature-control microcapsule finishing liquid according to the monitoring data of the microcapsule concentration online monitoring module.

[0009] On the basis of the above solution and as a preferred solution of the above solution, the nozzle is a two-fluid atomizing nozzle.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme, the action time of the pre-osmosis rolling is 2-3s; the action time of the main osmosis rolling is 5-8s; and the action time of the shaping rolling is 1-2s.

[0011] On the basis of the above solution and as a preferred solution of the above solution, the pressure of the main osmotic pressing and the particle size of the phase change temperature control microcapsules satisfy the following relationship: P=0.15d+0.1; Where: P is the pressure of the main osmotic pressure, the unit is MPa; d is the particle size of the phase change temperature-control microcapsules, the unit is μm.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme, step S2 also includes blowing air to exhaust; the wind speed of the blowing air to exhaust in the first drying is: the wind speed in the first half of the first drying is: 0.5-1.0m / s, and the wind speed in the second half of the first drying is 1.0-1.5m / s; the wind speed of the blowing air to exhaust in the second drying is: the wind speed in the first half of the second drying is: 1.5-2.5m / s, and the wind speed in the second half of the second drying is 1.0-1.5m / s; the wind speed of the blowing air to exhaust in the third drying is: the wind speed in the first half of the third drying is: 0.5-1.0m / s, and the wind speed in the second half of the third drying is 0.2-0.5m / s.

[0013] The beneficial effects of the present invention are: 1. This application adopts a continuous padding finishing method, which has higher processing efficiency than the traditional intermittent processing process of soaking-dehydration-drying, reduces manual intervention, reduces the labor intensity of staff, improves production efficiency, and can process more socks per unit time to meet the needs of large-scale production.

[0014] 2. The phase change temperature control microcapsule finishing liquid can be recycled through the residual liquid circulation system, which can reduce the waste of finishing liquid, reduce production costs, and also reduce the pressure of sewage treatment, which is more in line with environmental protection requirements.

[0015] 3. The combination of pressing and drying is used to dehydrate the socks, which effectively solves the problem of different dehydration degrees caused by different inner and outer linear speeds during the existing centrifugal dehydration process. It ensures that the content of phase change temperature-control microcapsules in each sock is uniform, significantly improving the functional consistency of socks in the same batch, greatly reducing the functional differences between batches and within the same batch of socks, and improving product quality and market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the continuous finishing equipment of the present invention.

[0017] In the figure: 1. Frame; 2. Perforated conveyor belt; 3. Pressing roller; 4. Pressing belt; 5. Nozzle; 6. Drying conveyor belt; 7. Oven. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] A continuous phase-change temperature-controlled microcapsule socks finishing process comprises the following steps: S1, padding; S2, drying.

[0020] Step S1 includes: the first phase change temperature control is capsule finishing liquid spraying, pre-osmosis pressing, the second phase change temperature control is capsule finishing liquid spraying, main osmosis pressing, and the third phase change temperature control is capsule finishing liquid spraying and shaping pressing.

[0021] Among them, the pressure of pre-penetration rolling is 0.2-0.3MPa, and the action time is 2-3s, which is used to break the surface tension so that the finishing liquid can penetrate into the inside of the socks.

[0022] The pressure of the main osmotic rolling is 0.5-0.8MPa, and the action time is 5-8s, which is used for the phase change temperature control microcapsules to penetrate into the socks. The pressure of the main osmotic rolling and the particle size of the phase change temperature control microcapsules satisfy the following relationship: P=0.15d+0.1; Where: P is the pressure of the main osmotic pressure, the unit is MPa; d is the particle size of the phase change temperature-control microcapsules, the unit is μm.

[0023] The pressure of the main osmotic press is adjusted according to the particle size of the phase change temperature control microcapsules to ensure an excellent penetration effect.

[0024] The pressure of the shaping and rolling is 0.1-0.2MPa, and the action time is 1-2s, which is used for surface finishing and improving the adhesion effect of the phase change temperature control microcapsules.

[0025] Step S2 includes: first drying, second drying and third drying, as well as blowing and exhausting during the drying process. Drying removes moisture from the socks, and blowing and exhausting discharges water vapor generated by drying.

[0026] The drying temperature of the first drying is 80-100℃, which serves as a preheating stage.

[0027] The wind speed for exhaust during the first drying phase is 0.5-1.0 m / s in the first half of the drying cycle, and 1.0-1.5 m / s in the second half. During this phase, the socks have a high moisture content, so a certain wind speed is required to accelerate moisture evaporation and ensure even heating. However, the wind speed should not be too high to prevent excessive heat loss and affect the preheating effect. In the second half of the preheating phase, as the socks' temperature gradually rises and moisture evaporation accelerates, the wind speed should be increased appropriately to better prepare for the main drying phase.

[0028] The drying temperature of the second drying is 105-115℃, which serves as the main drying section.

[0029] The wind speed for exhaust during the second drying phase is 1.5-2.5 m / s in the first half of the second drying phase, and 1.0-1.5 m / s in the second half. The second drying phase is a critical stage for sock drying, requiring higher wind speeds to quickly remove the large amount of evaporated water and improve drying efficiency. In the second half of the main drying phase, the moisture content of the socks gradually decreases. To avoid damage or over-drying caused by excessive wind speeds, the wind speed can be gradually reduced.

[0030] The drying temperature of the third drying is 90-95℃, which serves as a slow cooling stage.

[0031] The wind speed for exhaust during the third drying cycle is: 0.5-1.0 m / s in the first half of the third drying cycle, and 0.2-0.5 m / s in the second half. The slow cooling phase primarily allows the socks to stabilize their drying state at a lower temperature and gradually cool, at which point the wind speed should be further reduced. At the beginning of the slow cooling phase, the wind speed can be controlled at 0.5-1.0 m / s, using a gentle airflow to remove any remaining moisture and heat. In the second half of the slow cooling phase, near the oven exit, the wind speed can be reduced to 0.2-0.5 m / s, allowing the socks to cool slowly in a gentle airflow environment. This prevents quality issues such as shrinkage and hardening caused by sudden temperature drops or excessive wind speeds.

[0032] Step S1 and step S2 are implemented using a continuous finishing device, which includes a continuous conveying system, a uniform spraying system, a drying system, and a residual liquid circulation system.

[0033] The continuous conveyor system comprises a frame 1, mounted on a porous conveyor belt 2. The porous conveyor belt 2 is driven by a motor with controllable speed. Drive rollers are installed within the porous conveyor belt 2 to both drive the belt and maintain tension. The pores in the porous conveyor belt 2 range from 50 to 200 μm and are evenly distributed in an array. A tension control device is also incorporated into the porous conveyor belt 2 to maintain tension, ensuring optimal pressing results.

[0034] The porous conveyor belt 2 is equipped with three sets of spaced-apart pressing assemblies. These assemblies consist of two spaced-apart pressing rollers 3 and a pressing belt 4 that fits over the rollers 3. The pressing zone is defined between the pressing belt 4 and the porous conveyor belt 2. The three sets of pressing assemblies correspond to the pre-infiltration pressing, the main infiltration pressing, and the shaping pressing, respectively. The spacing between the two pressing rollers 3 in each set of pressing assemblies varies, resulting in varying lengths of the pressing zone formed between the pressing belt 4 and the porous conveyor belt 2, thus achieving varying application times at each pressing stage. The pressing rollers 3 and pressing belt 4 can be raised and lowered to adjust the pressure applied during each pressing stage.

[0035] The uniform spraying system includes a nozzle 5 located on the side of the three pressing assemblies facing away from the sock conveying direction. Preferably, the nozzle 5 is a two-fluid atomizing nozzle to ensure uniform spraying. The nozzle 5 is connected to a source of phase-change temperature-controlled microcapsule finishing liquid.

[0036] The drying system includes a drying conveyor belt 6 and an oven 7. The drying conveyor belt 6 passes through the oven 7, carrying the socks to be dried. One end of the drying conveyor belt 6 extends to the end of the porous conveyor belt 2 to receive the socks. The oven 7 is divided into three chambers, corresponding to the first drying phase, the second drying phase, and the third drying phase. An infrared radiation source is installed within the oven 7, heating the socks with infrared radiation to dry them. The drying temperature is controlled by adjusting the power of the infrared radiation source via a control system.

[0037] The residual liquid circulation system includes a residual liquid collecting tank 8, which is arranged below the porous conveyor belt 2 and is used to collect the phase-change temperature-control microcapsule finishing liquid extruded by pressing.

[0038] The residual liquid collection tank 8 is connected to a transfer configuration box. The transfer configuration box receives the phase-change temperature-controlled microcapsule finishing liquid collected by the residual liquid collection tank 8 and is internally equipped with an online microcapsule concentration monitoring module and an automatic microcapsule compensation device. The online microcapsule concentration monitoring module monitors the concentration of phase-change temperature-controlled microcapsules in the phase-change temperature-controlled microcapsule finishing liquid in real time. The automatic compensation device dynamically compensates the concentration of phase-change temperature-controlled microcapsules in the phase-change temperature-controlled microcapsule finishing liquid based on the monitoring data from the online microcapsule concentration monitoring module. The transfer configuration box is connected to a phase-change temperature-controlled microcapsule finishing liquid source and can deliver the prepared phase-change temperature-controlled microcapsule finishing liquid to the phase-change temperature-controlled microcapsule finishing liquid source.

[0039] Example 1: Cotton sports socks treatment: 1. Process parameters: Transmission speed: 1.5m / s; Rolling pressure: pre-pressing 0.25MPa → main pressure 0.65MPa → forming pressure 0.15MPa; Drying temperature: 95℃→130℃→92℃; 2. Test results: Microcapsule penetration depth: 0.82 mm (SEM observation); Phase change enthalpy: 14.2 J / g (DSC test); Inter-batch CV value: 6.8% (n=10 batches).

[0040] Example 2: Polyester stockings treatment; 1. Process parameters: Transmission speed: 2.2m / s; Rolling pressure: pre-pressing 0.28MPa → main pressure 0.55MPa → forming pressure 0.18MPa; Drying temperature: 88℃→120℃→90℃; 2. Test results: Surface microcapsule residual rate: <8% (microscopic counting method); Thermal cycle stability: ΔH fluctuation <±3% (100 heating and cooling cycles).

[0041] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A continuous phase change temperature control microcapsule socks finishing process, characterized in that: The following steps are involved: S1, padding; S2, drying; Said step S1 comprises: the first phase change temperature control is capsule finishing liquid spraying, pre-osmotic rolling, the second phase change temperature control is capsule finishing liquid spraying, main osmotic rolling, and the third phase change temperature control is capsule finishing liquid spraying and shaping rolling; The pressure of the pre-infiltration rolling is 0.2-0.3 MPa; the pressure of the main infiltration rolling is 0.5-0.8 MPa; the pressure of the shaping rolling is 0.1-0.2 MPa; The step S2 includes: first drying, second drying and third drying; the drying temperature of the first drying is 80-100°C; the drying temperature of the second drying is 105-115°C; and the drying temperature of the third drying is 90-95°C.

2. The continuous phase-change temperature-control microcapsule socks finishing process according to claim 1, characterized in that: Step S1 and step S2 are implemented using a continuous finishing device; the continuous finishing device includes a continuous conveying system, a uniform spraying system and a drying system; The continuous conveying system comprises a frame (1); a porous conveyor belt (2) is provided on the frame (1); the porous conveyor belt (2) is driven by a driving motor and has a controllable speed; three groups of spaced-apart pressing assemblies are provided on the porous conveyor belt (2); the pressing assemblies comprise two spaced-apart pressing rollers (3) and a pressing belt (4) sleeved on the outside of the pressing rollers (3); a pressing zone is formed between the pressing belt (4) and the porous conveyor belt (2); The uniform spraying system comprises a spray head (5) arranged on one side of the three groups of pressing assemblies away from the sock conveying direction; The drying system comprises a drying conveyor belt (6) and an oven (7); the drying conveyor belt (6) passes through the oven (7), and one end extends to the end of the porous conveyor belt (2) to receive the socks; the oven (7) is divided into three spaces, corresponding to the first drying, the second drying, and the third drying, respectively.

3. The continuous phase-change temperature-control microcapsule socks finishing process according to claim 2, characterized in that: The invention also includes a residual liquid circulation system; the residual liquid circulation system includes a residual liquid collecting tank (8); the residual liquid collecting tank (8) is arranged below the porous conveyor belt (2) to collect the phase change temperature control microcapsule finishing liquid extruded by pressing; the residual liquid collecting tank (8) is connected to a transfer configuration box; the transfer configuration box receives the phase change temperature control microcapsule finishing liquid collected by the residual liquid collecting tank (8), and is internally provided with a microcapsule concentration online monitoring module and a microcapsule automatic compensation device; the microcapsule concentration online monitoring module monitors the concentration of the phase change temperature control microcapsules in the phase change temperature control microcapsule finishing liquid in real time; the automatic compensation device dynamically compensates the concentration of the phase change temperature control microcapsules in the phase change temperature control microcapsule finishing liquid according to the monitoring data of the microcapsule concentration online monitoring module.

4. The continuous phase-change temperature-control microcapsule socks finishing process according to claim 2, characterized in that: The nozzle (5) is a dual-fluid atomizing nozzle.

5. The continuous phase-change temperature-control microcapsule socks finishing process according to claim 1, characterized in that: The action time of the pre-osmotic rolling is 2-3 seconds; the action time of the main osmotic rolling is 5-8 seconds; and the action time of the shaping rolling is 1-2 seconds.

6. The continuous phase-change temperature-control microcapsule socks finishing process according to claim 1, characterized in that: The pressure of the main osmotic rolling and the particle size of the phase change temperature control microcapsules satisfy the following relationship: P=0.15d+0.1; Where: P is the pressure of the main osmotic pressure, the unit is MPa; d is the particle size of the phase change temperature-control microcapsules, the unit is μm.

7. The continuous phase-change temperature-control microcapsule socks finishing process according to claim 1, characterized in that: The step S2 also includes blowing air to exhaust; the wind speed of the blowing air to exhaust in the first drying is: the wind speed in the first half of the first drying is: 0.5-1.0m / s, and the wind speed in the second half of the first drying is 1.0-1.5m / s; the wind speed of the blowing air to exhaust in the second drying is: the wind speed in the first half of the second drying is: 1.5-2.5m / s, and the wind speed in the second half of the second drying is 1.0-1.5m / s; the wind speed of the blowing air to exhaust in the third drying is: the wind speed in the first half of the third drying is: 0.5-1.0m / s, and the wind speed in the second half of the third drying is 0.2-0.5m / s.

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