TWM641378U - Defoaming coating device - Google Patents

Abstract

A defoaming coating device for forming a printing layer with a thickness on the surface of a carrier, the defoaming coating device includes a frame, a first ink tank, a defoaming roller, a second ink tank, a A scraper and a curing unit, using the first ink tank to spray a printing substance on the surface of the carrier to form a base layer by means of micro-ink supply, and uniformly use the defoaming roller in the unsolidified state of the base layer Rolling to eliminate the air bubbles contained in the interior, the second ink tank applies the printing substance to the surface of the base layer through defoaming again to form the printing layer, and controls the thickness of the printing layer through the scraper, and finally by The curing unit cures the printing layer to prevent air bubbles from entering the printing layer again, thereby greatly improving the quality of finished products and effectively reducing production costs.

Description

Defoaming coating device

This creation belongs to the field of printing technology, especially about a defoaming coating device that is applied to materials such as non-woven fabrics or rice paper with large fiber apertures that are likely to generate air bubbles during the printing process to eliminate air bubbles. Greatly improve the quality of finished products and reduce production costs.

Press, with the advancement of printing technology, a large number of products can be printed in a short period of time, and the colors are rich and colorful. However, ink is the main colorant used in modern printing. The main components of ink are pigments, binders, The filler is also produced by adding fillers, desiccants, etc. The most common problem in the printing process is bubbles. The following are the common causes of bubbles: 1. The pre-treatment of the carrier is poor, that is, it is not completely cleaned before printing. Clean carrier, the air bubbles are generated and adhered due to dust or oil stains on the surface; 2. The ink itself contains air bubbles. Since the ink is prepared with ink, when the preparation process is flawed or the formula is improperly prepared, foam may be generated , the foam here is mostly caused by improper ink mixing, and printing with such ink will naturally produce foam; 3. When additives or solvents are added during the preparation process for stirring, air is mixed into the ink to generate bubbles, which are diluted and have low viscosity. The ink of high viscosity will degas naturally, but the ink with high viscosity cannot degas naturally, so the ink with low viscosity is used for printing, and the bubbles may disappear or exist during the process; 4. The transparent ink contains organic The reduction of fine particles in the amount of pigment makes the connecting material in the ink easy to foam, which is easier to foam than in the printing process; 5. Excessive printing speed or uneven printing speed is also one of the reasons for the generation of bubbles.

To sum up, the existence of these large and small foams leads to various defects in the printed products. In order to improve the quality of the products, in addition to the defoaming method of the printing ink defoamer, there is also a decompression method on the market. (vacuumizing), standing, heating and pressurizing to remove the foam generated during printing, but when these methods are used, most of them need to wait for a certain period of time, which causes low production efficiency, energy and production costs. increase and other disadvantages. Therefore, it is necessary to eliminate foam in a short time. Adding a defoamer is the most suitable method. The defoamer has excellent defoaming and foam suppression functions for fine foam. Long, water-dispersible, has excellent adsorption force and does not affect transparency and other advantages, but after all, adding defoamer will still increase the production cost. On the other hand, using the vacuum method, because the equipment is expensive, and printing in a vacuum state will also increase the difficulty of printing. The conventional defoaming technology has problems in its use, so it is necessary to improve it.

In view of this, one purpose of this creation aims at providing a kind of defoaming coating device, and this defoaming coating device comprises a frame, a first ink tank, a defoaming roller, a second ink tank, a scraper and a curing unit, which uses the first ink tank to spray a printed matter on the surface of a carrier in a micro-ink supply manner, and eliminates the air bubbles of the printed matter by rolling through the defoaming roller, and then coats a printed matter from the second ink tank For the printing layer, the scraper controls the thickness of the printing layer, and after curing, it can avoid air bubbles in the printing layer, so as to greatly improve the quality of the finished product, and effectively reduce the production cost and other effects.

In order to achieve the above-mentioned purpose, the defoaming coating device of the present invention includes: a frame for unfolding the carrier, and a conveying unit is respectively provided at the front and rear ends of the frame to carry the carrier to move forward ; a first ink tank, located on the frame, and the first ink tank sprays the printed matter on the surface of the carrier to form a base layer; a defoaming roller, located on the frame and located at the first One side of the ink tank, and the defoaming roller is provided with a lifting mechanism to drive the defoaming roller to generate downward pressure The base layer is evenly rolled to eliminate the air bubbles contained in the base layer and evenly spread on the surface of the carrier; a second ink tank is located on the frame and is located at the defoaming One side of the roller, and the second ink tank recoats the printing material on the surface of the defoamed base layer to form the printing layer; a scraper is arranged on the frame and is located on the second ink tank side , and when the scraper is driven forward by the carrier, the printed material is scraped flat by the scraper and extended to both sides to adjust the thickness of the printing layer; and a curing unit is arranged on the frame and is located at the One side of the scraper, and the curing unit is used to heat or UV irradiate the printed matter to make it solidified.

Accordingly, using the defoaming coating device, a printing layer with a thickness can be formed on the surface of a carrier, the carrier is selected from fiber fabrics such as non-woven fabrics and rice paper, and the first ink tank is used to micro-ink the ink. An appropriate dose of a printing substance is sprayed on the surface of the carrier, and the first ink tank is provided with an ink nozzle that can control the amount of liquid, so that the spraying amount of the printing substance can be controlled in a small amount, so as to form a base layer , and the base layer is not yet solidified; use the downward pressure of the defoaming roller to uniformly roll the base layer to eliminate the air bubbles contained in the base layer and make it evenly coated on the carrier On the surface, press the printed matter on the carrier through an adjustable pressure roller to achieve the effect of short-distance defoaming; use the second ink tank to apply the printed matter on the defoamed base layer for the second time Surface to form the printing layer, the thickness of the printing layer is controlled by placing the amount of the printing material through the second ink tank in conjunction with the height of the scraper; using the scraper to scrape off the printing material on average to control the thickness of the printing layer; and The curing unit is used to cure the printing layer by heating or UV irradiation, so as to prevent air bubbles from entering the printing layer again.

The defoaming coating device of the invention further has an upper release paper unit, which is arranged on the frame and on one side of the curing unit, and the upper release paper unit is provided with a feeding wheel to store a release paper, and A transfer wheel is used to press and attach the release paper to the surface of the printing layer, and the release paper can be pasted on the release paper after the printing layer is cured as a surface protection means. Moreover, it also has a winding unit, which is arranged on the frame and is located on one side of the upper release paper unit, and the winding unit is provided with a winding unit. The material wheel is used to wind the carrier attached with the release paper into the receiving wheel, and the printed carrier can be stored and packaged in a winding manner.

S1~S7: steps

1: carrier

2: Printing layer

21: Printed Substance

3: Base layer

4: Release paper

5: Defoaming coating device

51: Rack

511: Conveyor unit

52: The first ink tank

521: Ink nozzle

53: Defoaming roller

531: Lifting mechanism

54: Second ink tank

55: scraper

56: Curing unit

57: Upper release paper unit

571: Feed wheel

572: transfer wheel

58: Winding unit

581: Receiving wheel

Fig. 1 is a schematic structural diagram of a preferred embodiment of the invention.

Fig. 2 is a flow chart of the steps in operation of the preferred embodiment of the present invention.

Fig. 3 is a schematic diagram of the state corresponding to the operation of step 1 of the preferred embodiment of the present invention.

Fig. 4 is a schematic diagram of the state corresponding to the operation of step 2 of the preferred embodiment of the present invention.

Fig. 5 is a schematic diagram of the state corresponding to the operation of step 3 in the preferred embodiment of the present invention.

Fig. 6 is a schematic diagram of the state corresponding to step 4 of the preferred embodiment of the present invention.

Fig. 7 is a schematic diagram of the state corresponding to the operation of step 5 of the preferred embodiment of the present invention.

Fig. 8 is a schematic diagram of the state corresponding to the operation of step 6 in the preferred embodiment of the present invention.

Fig. 9 is a schematic diagram of the state corresponding to the operation of step 7 of the preferred embodiment of the present invention.

In order to enable your review committee to clearly understand the content of this creation, only the following descriptions are provided with diagrams, please refer to them.

Please refer to FIG. 1, FIG. 2-FIG. 9, which are schematic diagrams of the structure of a preferred embodiment of the present invention, as well as the flow of steps during operation and the status diagrams of each corresponding step. As shown in the above-mentioned figures, the defoaming coating device 5 of the present invention includes: a frame 51 for unfolding the carrier 1, and the front and rear ends of the frame 51 are respectively provided with a conveying unit 511 for belt delivery. The carrier 1 moves forward; a first ink tank 52 is arranged on the frame 51, and the first ink tank 52 sprays the printed matter 21 on the surface of the carrier 1 to form the base layer 3, the first ink tank 52 The ink tank 52 is provided with an inkjet nozzle 521 that can control the liquid output, and can control the spraying amount of the printed matter 21 in a small amount; a defoaming roller 53 is located on the frame 51 and It is located on the side of the first ink tank 52, and the defoaming roller 53 is provided with a lift mechanism 531 to drive the defoaming roller 53 to generate a downward force to uniformly roll the base layer 3, so as to eliminate the inside of the base layer 3. contained air bubbles, and make it uniformly coated on the surface of the carrier 1; a second ink tank 54 is located on the frame 51 and is positioned at the side of the defoaming roller 53, and the second ink tank 54 will The printing material 21 is coated on the base layer 3 surface through defoaming to form the printing layer 2 again; a scraper 55 is arranged on the frame 51 and is positioned at the second ink tank 54 side, and the scraper 55 When the carrier 1 is driven to move forward, the scraper 55 is used to scrape the printed matter 21 flat and extend to both sides to adjust the thickness of the printed layer 2. The thickness of the printed layer 2 passes through the second ink tank 54 The amount of placing the printed matter 21 is controlled with the height of the scraper 55; and a curing unit 56 is arranged on the frame 51 and is positioned at one side of the scraper 55, and the curing unit 56 is for heating or UV irradiating the printing Substance 21 causes it to solidify.

Furthermore, the defoaming coating device is mainly used for forming a printing layer 2 with a thickness on the surface of a carrier 1, especially the carrier 1 is selected from fibrous fabrics such as non-woven fabrics and rice paper. This kind of fabrics has large fiber pores. Air bubbles are often generated during printing due to the accumulation of air in the pores during printing, and poor printing will be caused after the printing layer 2 is cured. Therefore, the defoaming coating device of this invention includes the following steps during operation :

S1: Spraying a suitable dose of a printing substance 21 on the surface of the carrier 1 by using a micro-ink supply method to form a base layer 3, and the base layer 3 is in an unsolidified state. It should be noted that since the micro-ink supply method is to spray the printed matter in the form of small particle molecules, in this step, most of the pores of the carrier 1 will be filled by the printed matter 21 and Does not create air bubbles.

S2: Rolling the base layer 3 evenly by using a downward force to eliminate air bubbles contained inside the base layer 3 and evenly coat the base layer 3 on the surface of the carrier 1 . It should be noted that in this step, the base layer 3 is rolled by an adjustable pressure roller, in addition to enabling the printed matter 21 to be pressed on the carrier 1, and because of the micro ink supply method Spraying can fully fill Filling in the pores of the carrier 1, and then pressing down and rolling, the air bubbles can be effectively eliminated naturally to achieve the effect of short-distance defoaming.

S3: coating the printing substance 21 on the surface of the defoamed base layer 3 for the second time to form the printing layer 2 . In this step, since the base layer 3 has been defoamed, its surface appears to be a smooth plane with no air bubbles remaining. At this time, when the printing material 21 is applied for the second time, it is naturally difficult or no air bubbles will be generated. .

S4: Using a scraper to evenly scrape off the printed matter 21 to control the thickness of the printed layer 2 . Controlling the height of the squeegee can make the printing material that exceeds the height of the squeegee spread to the surroundings. After actual testing, it is found that through such an adjustment method, the usage of the printing material 21 can be effectively saved, and the production quality of the finished product can be improved.

S5: curing the printing layer 2 to prevent air bubbles from entering the printing layer 2 again. After the printing layer 2 is cured, a protective film that prevents air from entering is formed on its surface.

S6: attaching the release paper 4, after the printing layer 2 is cured, paste the release paper 4 as its surface protection means. Although the printing layer 2 is still partly viscous after being cured, it may be attached to dust and cotton in the air. Therefore, in order to keep its surface clean, it is still necessary to attach a layer of release paper 4 as a perfect protection.

S7: Winding, after the release paper 4 is pasted, the printed carrier 1 is stored and packaged in a winding manner.

In addition, the defoaming coating device 5 of the present invention further has an upper release paper unit 57, which is arranged on the frame 51 and is positioned at one side of the curing unit 56, and the upper release paper unit 57 is provided with a feeding wheel 571 to The release paper 4 is stored, and a transfer wheel 572 is used to press and attach the release paper 4 to the surface of the printing layer 2 . Furthermore, the defoaming coating device 5 of the present invention also has a winding unit 58, which is located on the frame 51 and is located on the side of the upper release paper unit 57, and the winding unit 58 is provided with a winding wheel 581 to wind the carrier 1 attached with the release paper 4 into the receiving wheel 581 .

In summary, the defoaming coating device 5 of this invention, after the above-mentioned steps, can form a consistent production process for the manufacturing processes such as defoaming and coating, thereby improving its production efficiency and product quality, and For the purpose of reducing manufacturing costs during production, etc. At the same time, the produced product will not only have no air bubbles, but if the transparent printing material 21 is used, it can also maintain its thorough material effect. Compared with the traditional use of defoamers, not only the time required for defoaming is shorter, but also Reduces manufacturing costs by eliminating the need for defoamers.

However, the above-mentioned ones are only preferred embodiments of this creation, and are not used to limit the scope of implementation of this creation. Therefore, those who have ordinary knowledge in the technical field, or those who are familiar with this technology make equivalent or easy All changes and modifications made without departing from the spirit and scope of this creation shall be covered by the patent scope of this creation.

1: carrier

4: Release paper

5: Defoaming coating device

51: Rack

511: Conveyor unit

52: The first ink tank

521: Ink nozzle

53: Defoaming roller

531: Lifting mechanism

54: Second ink tank

55: scraper

56: Curing unit

57: Upper release paper unit

571: Feed wheel

572: transfer wheel

58: Winding unit

581: Receiving wheel

Claims (6)

A defoaming coating device is used to form a printing layer with a thickness on the surface of a carrier, which includes: a frame for unfolding the carrier, and the front and rear ends of the frame are respectively provided with a conveying unit for feeding Send the carrier to move forward; a first ink tank is set on the frame, and the first ink tank sprays a printing material on the surface of the carrier to form a base layer; a defoaming roller is set on the machine on the frame and located on the side of the first ink tank, and the defoaming roller is provided with a lifting mechanism to drive the defoaming roller to generate a downward force and roll the base layer evenly to eliminate the bubbles contained in the base layer. air bubbles, and make it evenly coated on the surface of the carrier; a second ink tank is located on the frame and on the side of the defoaming roller, and the second ink tank recoats the printed matter on the The surface of the base layer of defoaming to form the printing layer; a scraper is arranged on the frame and is located at one side of the second ink tank, and when the scraper is driven forward by the carrier, the scraper will The printed matter is scraped flat and extended to both sides to adjust the thickness of the printed layer; and a curing unit is arranged on the frame and positioned at one side of the scraper, and the curing unit is used for heating or UV irradiating the printed matter to make its solidified. The defoaming coating device according to Claim 1, wherein the carrier is selected from fibrous fabrics such as non-woven fabrics and rice paper. The defoaming coating device as described in claim 1 further has an upper release paper unit, which is arranged on the frame and is positioned at one side of the curing unit, and the upper release paper unit is provided with a feed wheel to store a release paper unit. type paper, and a transfer wheel to press and attach the release paper to the surface of the printing layer. The defoaming coating device as described in claim 3 further has a winding unit, which is arranged on the frame and is located on one side of the upper release paper unit, and the winding unit is provided with a winding wheel to attach The carrier with the release paper is wound and received in the receiving wheel. The defoaming coating device according to claim 1, wherein the first ink tank is provided with an ink nozzle capable of controlling the liquid output, so that the spraying amount of the printed matter can be controlled in a small amount. The defoaming coating device as described in claim 1, wherein the thickness of the printing layer is controlled by the amount of the printing material placed in the second ink tank and the height of the scraper.

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