Cloth film covering equipment and method thereof

Abstract

Cloth laminating equipment relates to the field of cloth production and processing equipment and comprises a cloth feeding device, a pretreatment liquid tank, a front drying device, a single-head coating machine, a dipping tank, a washing device and a drying machine which are sequentially connected in the cloth conveying direction, and the pretreatment liquid tank receives cloth from the cloth feeding device and soaks the cloth in pretreatment liquid; the single-head coating machine receives the cloth and scrapes a coating agent on the top surface of the cloth; the dipping tank comprises a dipping bin, a driving roller set, a driven roller set, a mounting rod and an auxiliary roller, and the dipping bin is used for containing dipping liquid; the driving roller group is arranged at the front end of the dipping bin; the driven roller set is arranged behind the dipping bin, the cloth penetrating operation device is arranged between the driving roller set and the driven roller set, and a coating agent is conveyed into the dipping bin along with cloth to form a coating film. The washing device receives the impregnated cloth for washing; and the drying machine receives the washed cloth and dries the washed cloth. The invention aims to manufacture a firm breathable coating which is formed only on the surface as a dry-process coating and is similar to a wet-process coating.

Description

Technical Field

[0001] The present invention belongs to the field of cloth production equipment, and in particular relates to a cloth coating device and a method thereof. Background Art

[0002] Coated cloth mainly refers to a cloth that is coated with a layer of material with special functions using a special process, so that the cloth has special functions. Currently, common coating methods are divided into dry coating and wet coating. Dry coating is to dissolve the coating agent in water or an organic solvent, add certain additives to make a coating slurry, and use a coater to directly and evenly apply it on the fabric. After heating, drying and baking to remove moisture and solvents, the coating agent forms a continuous and tough film on the surface of the fabric through its own cohesion or the cross-linking effect of the resin, which is also called direct coating. Wet coating is to evenly apply the coating agent on the fabric, and then form a microporous film on the fabric through a water coagulation bath, and then undergo post-processing steps such as sanding, embossing, and calendering to make a coating product, which is also called a coagulation coating. The present application aims to combine the advantages of the two coating processes to produce a coating that is generally only formed on the surface like a dry coating, but has similar firm and breathable properties to wet coating. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a cloth coating device and method.

[0004] The present invention adopts the following technical solutions:

[0005] A cloth coating device comprises a cloth feeding device, a pre-treatment liquid tank, a pre-drying device, a single-head coating machine, a dipping tank, a washing device and a drying machine, which are sequentially connected along the cloth conveying direction.

[0006] The cloth feeding device is set at the front end of the equipment;

[0007] The pre-treatment liquid tank receives the cloth from the cloth feeding device and soaks the cloth in the pre-treatment liquid;

[0008] The front drying device receives the cloth from the pre-treatment liquid tank and dries it;

[0009] The single-head coating machine receives the fabric and applies the coating agent on the top surface of the fabric;

[0010] The impregnation tank includes an impregnation chamber, an active roller group, a driven roller group, a mounting rod, and auxiliary rollers. The impregnation chamber is used to hold the impregnation liquid; the active roller group is arranged at the front end of the impregnation chamber; the driven roller group is arranged at the rear of the impregnation chamber, and the cloth threading operation is arranged between the active roller group and the driven roller group. The coating agent is transported along the cloth in the impregnation chamber to form a coating film; there are several mounting rods arranged on the inner walls of the impregnation chamber on both sides along the cloth conveying direction; there are several auxiliary rollers, which are movably arranged on the mounting rods to cooperate with the cloth threading;

[0011] The washing device receives the soaked cloth and washes it;

[0012] The dryer receives washed fabrics and dries them.

[0013] Preferably, the water washing device is provided with several devices, which are arranged along the conveying direction of the cloth, including a washing tank for holding the washing liquid and several pairs of upper rollers and lower rollers arranged relatively up and down in the washing tank, and the cloth is reciprocated along the conveying direction and arranged on the upper rollers and lower rollers.

[0014] Preferably, it also includes a rolling mechanism, and there are several rolling mechanisms, which are respectively arranged between the pre-treatment liquid tank and the pre-drying device, between the immersion tank and the water washing device, and at the end of the water washing tank. The rolling mechanism includes an upper roller, a lower roller and a lifting cylinder. The upper roller and the lower roller are opposite to each other up and down, and the cloth passes between the upper roller and the lower roller; the lifting cylinder is connected to the upper roller and drives it to move up and down to adjust the distance between the upper roller and the lower roller.

[0015] Preferably, the cloth feeding device includes a plurality of cloth feeding rollers and a flattening roller for flattening the cloth.

[0016] Preferably, a pre-treatment roller is provided in the pre-treatment liquid tank, and the pre-treatment roller is located at the bottom of the pre-treatment liquid tank. The cloth enters the pre-treatment liquid tank from above and passes around the pre-treatment roller before being output upward.

[0017] Preferably, the front drying device includes a plurality of drying rollers for the cloth to pass around and a drying chamber arranged outside the drying rollers.

[0018] Preferably, the single-head coating machine is a scraper coating machine.

[0019] Preferably, the drying machine includes a needle-clip conveyor belt for conveying cloth and drying chambers sequentially arranged on the outside of the needle-clip conveyor belt along the conveying direction of the needle-clip conveyor belt.

[0020] Preferably, the dryer further comprises a cloth rolling machine arranged at the end of the dryer for receiving the cloth.

[0021] A method for coating a fabric, based on a fabric coating device according to any one of claims 1 to 9, comprising:

[0022] (1) Pretreatment: threading the fabric and adjusting the positions of the auxiliary roller, upper roller and lower roller according to the required immersion time, washing time and fabric conveying speed before starting the equipment;

[0023] (2) Pre-treatment: The fabric is fed into the equipment through the fabric feeding device and first enters the pre-treatment liquid tank so that the fabric is fully soaked in the pre-treatment liquid. The fabric in the pre-treatment liquid tank is pressed out of the excess pre-treatment liquid by the roller mechanism, and then dried by the front drying device and transported to the rear;

[0024] (3) Coating and impregnation: A single-head coating machine coats a layer of coating slurry on the surface of the fabric and then the fabric enters the impregnation tank. The chemical solvent in the impregnation tank forms a coating film on the surface of the fabric. When the coated fabric is discharged from the impregnation tank, the excess liquid in the fabric is squeezed out by a roller mechanism;

[0025] (4) Washing: the fabric enters the washing tank multiple times along the conveying direction for washing, and after each washing, the excess water is squeezed out by the roller mechanism at the end of the washing tank;

[0026] (5) Drying: The dryer receives the cloth, dries it, and then outputs it backwards for stacking or rolling.

[0027] From the above description of the present invention, it can be seen that compared with the prior art, the beneficial effects of the present invention are: by combining dry coating and wet coating, the fabric is pre-treated to prevent excessive penetration of the coating slurry into the fabric, and a coating film is formed by dipping after coating, so as to produce a fabric with a firm and breathable coating formed only on the surface; at the same time, by adjusting the height of the auxiliary roller in the dipping tank and the way the fabric is threaded, the dipping time of the fabric in the dipping tank can be adjusted without adjusting the feeding speed, and can be adapted to the dipping time required for coatings of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the cloth feeding device and the pre-treatment liquid tank of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the front drying device and the single-head coating machine of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the dipping tank of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the water washing device of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the drying machine and the cloth rolling machine of the present invention;

[0034] In the figure: 1- cloth feeding device; 11- cloth feeding roller; 12- flattening roller; 2- pre-treatment liquid tank; 21- pre-treatment roller; 3- front drying device; 31- drying roller; 32- drying chamber; 4- single-head coating machine; 5- impregnation tank; 51- impregnation chamber; 52- driving roller group; 53- driven roller group; 54- mounting rod; 55- auxiliary roller; 6- washing device; 61- washing tank; 62- upper roller; 63- lower roller; 7- drying machine; 71- needle clip conveyor belt; 72- drying chamber; 8- rolling mechanism; 81- upper roller; 82- lower roller; 83- lifting cylinder; 9- cloth winding machine. DETAILED DESCRIPTION

[0035] The present invention is further described below through specific embodiments.

[0036] Reference Figures 1 to 6 As shown, a cloth coating equipment includes a cloth feeding device 1, a pre-treatment liquid tank 2, a pre-drying device 3, a single-head coating machine 4, an immersion tank 5, a water washing device 6, a drying machine 7, a rolling mechanism 8, and a cloth winding machine 9.

[0037] The cloth feeding device 1, the pre-treatment liquid tank 2, the pre-drying device 3, the single-head coating machine 4, the dipping tank 5, the water washing device 6, the drying machine 7 and the cloth winding machine 9 are arranged in sequence along the cloth conveying direction.

[0038] The cloth feeding device 1 is arranged at the front end of the equipment, and includes a plurality of cloth feeding rollers 11 and a flattening roller 12 for flattening the cloth.

[0039] The pretreatment liquid tank 2 receives the cloth from the cloth feeding device 1 and soaks it in pretreatment liquid. A pretreatment roller 21 is provided in the pretreatment liquid tank 2. The pretreatment roller 21 is located at the bottom of the pretreatment liquid tank 2. The cloth enters the pretreatment liquid tank 2 from above and is output upward after winding around the pretreatment roller 21.

[0040] The front drying device 3 receives the cloth from the pre-treatment liquid tank 2 and dries it. The front drying device 3 includes a plurality of drying rollers 31 for the cloth to pass around and a drying chamber 32 arranged outside the drying rollers 31.

[0041] The single-head coating machine 4 is a scraper-type coating machine, which is a commonly used device for coating fabrics in the art. It is not the focus of this application, and its structure and selection will not be further described here.

[0042] The dipping tank 5 includes a dipping chamber 51, a driving roller group 52, a driven roller group 53, mounting rods 54, and auxiliary rollers 55. The dipping chamber 51 holds the dipping liquid; the driving roller group 52 is located at the front of the dipping chamber 51; the driven roller group 53 is located behind the dipping chamber 51. The fabric threading operation is arranged between the driving roller group 52 and the driven roller group 53. The coating agent is transported along the fabric into the dipping chamber 51 to form a coating film. There are several mounting rods 54, arranged on the inner walls of the dipping chamber 51 on both sides along the fabric feed direction. There are several auxiliary rollers 55, which are movably mounted on the mounting rods 54 to assist in fabric threading. By adjusting the height of the auxiliary rollers 55 in the dipping tank 5 and the fabric threading method, the fabric immersion time in the dipping tank 5 can be adjusted without adjusting the fabric feed speed, adapting to the immersion time required for coatings of different thicknesses.

[0043] The soaked fabric is then washed by the washing device 6. Two washing devices 6 are provided, arranged along the fabric conveying direction. These devices comprise a washing tank 61 for holding the wash solution and several pairs of upper and lower rollers 62 and 63 arranged in the washing tank 61, one above the other. The fabric reciprocates along the conveying direction, passing over these rollers. The washing duration can be adjusted by adjusting the number of times the fabric passes around these rollers.

[0044] There are four rolling mechanisms 8, which are respectively arranged between the pre-treatment liquid tank 2 and the pre-drying device 3, between the immersion tank 5 and the water washing device 6, and at the end of the two water washing tanks 61. The rolling mechanism 8 includes an upper roller 81, a lower roller 82 and a lifting cylinder 83. The upper roller 81 and the lower roller 82 are opposite to each other up and down, and the cloth passes between the upper roller 81 and the lower roller 82; the lifting cylinder 83 is connected to the upper roller 81 and drives it to move up and down to adjust the distance between the upper roller 81 and the lower roller 82.

[0045] The dryer 7 receives the washed cloth and dries it. The dryer 7 comprises a clip conveyor belt 71 for conveying the cloth and drying chambers 72 arranged in sequence outside the clip conveyor belt 71 along the conveying direction of the clip conveyor belt 71.

[0046] The cloth rolling machine 9 is arranged at the end of the drying machine 7 for receiving and rolling up the cloth.

[0047] A method for laminating a fabric:

[0048] (1) Pre-treatment: threading the fabric and adjusting the positions of the auxiliary roller 55, the upper roller 62 and the lower roller 63 according to the required immersion time, the water washing time and the fabric conveying speed, and then starting the equipment;

[0049] (2) Pre-treatment: The cloth is fed into the equipment through the cloth feeding device and first enters the pre-treatment liquid tank 2 so that the cloth is fully soaked in the pre-treatment liquid. The cloth transported from the pre-treatment liquid tank 2 is pressed out of the excess pre-treatment liquid by the roller mechanism 8, and then dried by the front drying device 3 and transported backward;

[0050] (3) Coating and impregnation: A single-head coating machine 4 coats a layer of coating slurry on the surface of the fabric and then the fabric enters the impregnation tank 5. The chemical solvent in the impregnation tank 5 forms a coating film on the surface of the fabric. When the coated fabric exits the impregnation tank 5, the excess liquid in the fabric is squeezed out by the roller mechanism 8;

[0051] (4) Washing: the fabric enters the washing tank 61 for washing multiple times along the conveying direction, and after each washing, the excess water is squeezed out by the roller mechanism 8 provided at the end of the washing tank 61;

[0052] (5) Drying: The drying machine 7 receives the cloth, dries it, and outputs it backwards for piling or rolling.

[0053] This method combines dry coating and wet coating, pre-treating the fabric to prevent excessive penetration of the coating slurry into the fabric, and then forming a coating film by dipping after coating. This has achieved the production of fabric with a strong and breathable coating formed only on the surface, which is highly innovative.

[0054] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of the present invention. In other words, equivalent changes and modifications made according to the scope of the patent application and the contents of the specification should still fall within the scope of the patent of the present invention.

Claims

1. A cloth laminating device, characterized in that: It includes a cloth feeding device, a pre-treatment liquid tank, a pre-drying device, a single-head coating machine, an immersion tank, a washing device and a drying machine, which are connected in sequence along the cloth conveying direction. The cloth feeding device is set at the front end of the equipment; The pre-treatment liquid tank receives the cloth from the cloth feeding device and soaks the cloth in the pre-treatment liquid; The front drying device receives the cloth from the pre-treatment liquid tank and dries it; The single-head coating machine receives the fabric and applies the coating agent on the top surface of the fabric; The dipping tank includes a dipping tank, a driving roller group, a driven roller group, a mounting rod and an auxiliary roller. The dipping tank is used to hold the dipping liquid; the driving roller group is arranged at the front end of the dipping tank; The driven roller group is set behind the impregnation chamber, and the cloth threading operation is arranged between the active roller group and the driven roller group. The coating agent is transported along with the cloth to form a coating film in the impregnation chamber. There are several mounting rods, which are arranged on the inner walls of the impregnation chamber on both sides along the cloth conveying direction. There are several auxiliary rollers, which are movably set on the mounting rods to cooperate with the cloth threading. The washing device receives the soaked cloth and washes it; The dryer receives washed fabrics and dries them.

2. The cloth laminating device according to claim 1, characterized in that: The washing device is provided with several devices, which are arranged along the conveying direction of the cloth, including a washing tank for holding washing liquid and several pairs of upper rollers and lower rollers arranged relatively in the washing tank. The cloth is reciprocated along the conveying direction and arranged on the upper rollers and lower rollers.

3. The cloth laminating device according to claim 2, characterized in that: It also includes a rolling mechanism, and there are several rolling mechanisms, which are respectively arranged between the pre-treatment liquid tank and the pre-drying device, between the immersion tank and the water washing device, and at the end of the water washing tank. The rolling mechanism includes an upper roller, a lower roller and a lifting cylinder. The upper roller and the lower roller are opposite to each other up and down, and the cloth passes between the upper roller and the lower roller; the lifting cylinder is connected to the upper roller and drives it to move up and down to adjust the distance between the upper roller and the lower roller.

4. The cloth laminating device according to claim 1, characterized in that: The cloth feeding device includes a plurality of cloth feeding rollers and a flattening roller for flattening the cloth.

5. The cloth laminating device according to claim 1, characterized in that: A pre-treatment roller is provided in the pre-treatment liquid tank, and the pre-treatment roller is located at the bottom of the pre-treatment liquid tank. The cloth enters the pre-treatment liquid tank from above and passes around the pre-treatment roller and then is output upward.

6. The cloth laminating device according to claim 1, characterized in that: The front drying device includes a plurality of drying rollers for the cloth to pass around and a drying chamber arranged outside the drying rollers.

7. The cloth laminating device according to claim 1, characterized in that: The single-head coating machine is a scraper-type coating machine.

8. The cloth laminating device according to claim 1, characterized in that: The drying machine comprises a needle-clip conveyor belt for conveying cloth and drying chambers sequentially arranged on the outer side of the needle-clip conveyor belt along the conveying direction of the needle-clip conveyor belt.

9. The cloth laminating device according to claim 1, characterized in that: It also includes a cloth rolling machine arranged at the end of the dryer for receiving the cloth.

10. A method for laminating a fabric, based on the fabric laminating device according to any one of claims 1 to 9, characterized in that: include (1) Pretreatment: threading the fabric and adjusting the positions of the auxiliary roller, upper roller and lower roller according to the required immersion time, washing time and fabric conveying speed before starting the equipment; (2) Pre-treatment: The fabric is fed into the equipment through the fabric feeding device and first enters the pre-treatment liquid tank so that the fabric is fully soaked in the pre-treatment liquid. The fabric in the pre-treatment liquid tank is pressed out of the excess pre-treatment liquid by the roller mechanism, and then dried by the front drying device and transported to the rear; (3) Coating and impregnation: A single-head coating machine coats a layer of coating slurry on the surface of the fabric and then the fabric enters the impregnation tank. The chemical solvent in the impregnation tank forms a coating film on the surface of the fabric. When the coated fabric is discharged from the impregnation tank, the excess liquid in the fabric is squeezed out by a roller mechanism; (4) Washing: the fabric enters the washing tank multiple times along the conveying direction for washing, and after each washing, the excess water is squeezed out by the roller mechanism at the end of the washing tank; (5) Drying: The dryer receives the cloth, dries it, and then outputs it backwards for stacking or rolling.

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