KR100829198B1 - Screen printing machine and screen printing method using the same - Google Patents

Abstract

A screen printing machine and a screen printing method using the same are provided to produce a roll-to-roll type screen printing machine at low cost by reducing printing material waste. A screen printing method using a screen printing machine includes the steps of: setting a gap between patterns as 200mum; printing a pattern on a roll-to-roll type screen in a first printer(11a); printing a next pattern on a spot skipping over a space for one pattern to be printed; repeating pattern printing process skipping over the space; drying the printed screen in a first dryer(12a); printing a pattern between the patterns printed by the first printer in a second printer; and drying the printed screen in a second dryer(12b).

Description

Screen printing method and screen printing apparatus using the same {Screen printing machine and screen printing method using the same}

The present invention relates to a screen printing method and a screen printing apparatus using the same, and more particularly, a roll-to-roll screen printing method in which a printed matter wound in a roll state is continuously passed through a printing machine, and the like. A screen printing apparatus to which a printing method is applied.

In general, screen printing is a printing technique in which a screen having a hole of a desired logo or pattern is formed on an upper portion of a to-be-printed object, and a paste is applied on the upper surface of the to-be-printed object so that the desired logo or pattern is printed on the surface of the to-be-printed object.

For example, on a screen made by weaving microfibers such as silk, Teflon, polyester, or Nylon, the remaining portions except for the wiring pattern are formed into a net, or the remainder except the wiring pattern is formed. After the film is sealed, the paste is poured and the paste is pushed in using a squeeze, so that the paste passes through the screen and a predetermined wiring pattern is formed on the printed board.

A printing machine for screen printing is provided with a frame, a printing table on which a printed object is placed at a printing performing position on the frame, a printing performing mechanism installed on the upper frame of the printing table so as to reciprocate left and right, and a portion of the frame between the printed performing mechanism and the printed object. It has the basic structure which consists of a screen etc. which partially pass the paste installed and apply | coated.

This screen printing method has been applied to many production processes because of the advantage of controlling the thickness of ink and using various pastes, but in recent years, sheet printing in sheet form is mostly difficult and it is difficult to fully automate. Most of the roll-to-roll screen printing is being applied to reduce costs.

As shown in FIG. 2, the roll-to-roll screen printing method is a method of printing a to-be-printed object, for example, a film form, which is wound in a roll 10 state instead of a single print, continuously passing through the printer 11. As a result, the productivity is very high, and the demand for this printing machine is increasing.

Here, reference numeral 12 denotes a dryer.

In particular, it is expected that the use of this printer will become common within the next few years in the fields of mobile phones, RFID and manufacturing.

However, the conventional roll-to-roll screen printing machine has many advantages, but also has some disadvantages.

Although the roll-to-roll screen printing machine has a feature that can be continuously printed and dried, as shown in Figure 2, the pitch shifted after printing, the interval of about 10mm or more is required for the next printing.

This spacing, in turn, means a loss of expensive printing material, and involves the disadvantage of having to make a lot of pitch shifts in the post-printing process (for example, the press process).

It is not possible to manufacture a screen printing machine that can print a print pattern and a gap between the patterns within 10 mm.

This is because undried ink touches the screen during the next printing due to the nature of screen printing, which requires a larger size of screen than the printed area.

In the case of gravure printing, printing is possible at intervals of 20 μm, but since a small amount of printing is impossible, a large part of the printing has to be discarded after printing for a small amount of printing, and a screen printing method that can satisfy this is urgently needed. It is a required situation.

Accordingly, the present invention has been made in view of the above, and by implementing a new type of printing system in which roll-to-roll type screen printing skips one pattern by one pattern, and then fills them in between, and then performs second printing. The purpose of the present invention is to provide a screen printing method and a screen printing apparatus using the same, which can reduce the interval between printing patterns as much as possible, thereby improving productivity and reducing costs.

Screen printing method according to an embodiment of the present invention for achieving the above object is a roll-to-roll screen printing method by printing a pattern after the printing of one pattern in the first printing machine to the next pattern to print all the first roll After printing by crossing the patterns one by one, drying in the primary dryer, and printing one by one in the secondary printing press by filling the patterns one by one in the space between the dried pattern and the space between the patterns. And drying in a tea dryer.

Here, the interval between the pattern and the pattern in the process of printing by one pattern in the primary printing press may be set so that at least 200㎛ left on each side except for the width of the pattern to be printed therebetween.

In addition, when printing all 10 patterns on one roll, in the first printing, the patterns are skipped one by one in the order of 1, 3, 5, 7, 9, and then dried, and in the second printing, 2, 4, 6 , 8, 10 in order to fill the gap between the printing and drying can be printed.

On the other hand, the screen printing apparatus according to an embodiment of the present invention for achieving the above object adopts a roll-to-roll screen printing method, while printing one pattern in a manner of printing the next pattern by skipping one pattern after printing one pattern The first printing press to print a pattern by skipping one by one, and the second printing by sequentially filling the patterns one by one in a space between the patterns and the space of a roll dried one by one. It can be made in the form including a printer, a primary dryer, a secondary dryer, and the like, which are assigned to each of the first and second printing presses one after the other.

As described above, the necessity of a roll-to-roll printing machine for improving productivity and reducing labor costs is gradually emphasized, but the limit of the pattern gap can not be reduced to a certain level, thus limiting the use of the roll-to-roll printing method. In the printing method and apparatus of the present invention, the printing portion of the process that allows the printing interval of 200㎛ or more is not allowed, and can reduce the expensive printing material waste due to the wide pitch, thereby improving productivity and reducing costs. There is an advantage.

Hereinafter, a screen printing method and a screen printing apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a roll-to-roll screen printing apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the roll-to-roll screen printing apparatus continuously arranges two sets of printing presses and dryers, and continuously prints a printed matter, for example, a film-shaped printed matter, in roll form at the front and rear ends. It is done in such a way that it is done.

To this end, rolls 10 for winding the finished film for releasing the film fabric are respectively disposed at the front and rear ends, and a plurality of idlers 13 are disposed therebetween to guide the progress of the film to a predetermined trajectory. In the section between the front and rear rolls 10, a set of the primary printer 11a and the primary dryer 12a and another set of the secondary printer 11b and the secondary dryer 12b are disposed in this order, respectively. The print job will be performed.

Here, the printing machine is a scraper for applying the paste on the screen, the squeeze to press the upper surface of the paste is applied so that the paste applied on the screen can pass through the screen to be deposited on the substrate, the horizontal direction of the scraper and squeeze and It includes a drive means for vertical transfer, and is installed in the form located on the upper side of the table 14 on which the to-be-printed object during the printing operation, while the dryer applies the drying method used in ordinary screen printing as it is can do.

In the present invention, after two sets of printing presses and dryers are arranged in series, each of them can perform a different printing method, thereby minimizing the interval between printing patterns, that is, at least 200 μm pitch in a roll-to-roll screen printing method. Provides a way to print a pattern.

To this end, the primary printing press 11a prints one pattern, and then pitch shifts to print the next neighboring pattern, rather than printing the next neighboring pattern. Perform a print job.

That is, after one pattern is printed, the print job is performed in a manner of skipping by one pattern leaving one pattern print place.

For example, if it is assumed that 10 patterns are printed on one roll in total, and that 10 patterns have a pattern number of 1 to 10, respectively, the primary printing machine 11a carries the pitch shift of the to-be-printed object, 1, 3 2, 4, 6, 8, and 10 patterns remain on the roll of the to-be-printed material after the first printing.

Substantially many patterns are printed on one roll, so that printing can be performed in the order of 1, 3, 5, 7, 9 in the primary printing press, and 2, 4 in the secondary printing press described later. Printing may be performed in the order of 6, 8, 10,.

Thus, the to-be-printed object which has been skipped and printed by one pattern is dried while passing through the primary dryer 12a, and then proceeds to the secondary printer 11b side for secondary printing.

In particular, in the present invention, when printing a pattern by the primary printing press (11a) by skipping one by one, the interval between the pattern and the pattern, that is, the interval between the printed one pattern and the pattern printed across the pattern is a minimum interval Can be set.

In other words, after one pattern is printed, the next pattern to be printed is pulled as close as possible to the first printed pattern, so that one pattern can be printed with a minimum distance between them (for example, about 200 μm). You can set it so that only a certain amount of space remains.

As described above, the printed matter which has been printed and dried by the primary printer 11a and the primary dryer 12a may be printed and dried once more in the secondary printer 11b and the secondary dryer 12b.

Here, printing is performed in such a manner that the patterns are sequentially filled one by one in the space between the pattern of one roll which is printed and dried and spaced one by one, and then the final secondary drying is performed.

That is, printing is performed in such a manner that one pattern is filled between the pattern printed in the first printing step and the pattern.

For example, if printing was performed in the order of 1, 3, 5, 7, 9, ... in primary printing, 2, 4, 6, 8, 10, ... in secondary printing Printing is performed in the order of.

Here, when the screen is positioned to print the pattern in an empty space where a single pattern can barely enter, leaving only about 200 μm of space on both sides, the pattern portion on the front and back sides where the outer portion of the screen is first printed. In the case of the front and rear patterns at this time, since the drying is completed, the ink may be smeared out.

Therefore, space is spaced by printing one by one in the primary printing machine, and the printed material printed by the primary dryer is dried in the primary dryer so that it does not interfere with the second printing, and the printing in the second printing machine is not printed in the primary printing. The finished product is produced by drying the printed matter printed in the secondary printing in the secondary dryer in the secondary dryer, and as a result, the roll-to-roll screen printing method can print and dry at the minimum pitch, for example, 200 탆 pitch. Done.

As the necessity of the roll-to-roll screen printing machine to improve productivity and labor cost is being emphasized, the printing method that can dramatically reduce the pattern spacing is pursued, thereby pursuing the universalization of the roll-to-roll printing machine in many future screen printing fields. can do.

1 is a schematic view showing a roll-to-roll screen printing apparatus according to an embodiment of the present invention

2 is a schematic view showing a conventional roll-to-roll screen printing apparatus

<Description of the symbols for the main parts of the drawings>

10: roll

11: printing press

11a: primary printing machine

11b: second printing press

12: dryer

12a: primary dryer

12b: secondary dryer

13: idler

14: table

Claims (4)

In the roll-to-roll screen printing method, In the roll-to-roll screen printing, printing one pattern on the first printing machine and then skipping one pattern to print the next pattern. And printing in a manner of sequentially filling patterns one by one in a space between spaces and the pattern of one roll which is printed and dried in a primary printing machine, and drying in a secondary dryer. The method of claim 1, wherein the interval between the pattern and the pattern in the process of printing by one pattern in the primary printing machine is set to leave at least 200㎛ on each side except the width of the pattern to be printed therebetween Screen printing method characterized by the above. The method according to claim 1 or 2, in the case of printing all 10 patterns on the first roll in the primary printing in the order of 1, 3, 5, 7, 9 in the order of printing after printing, drying, secondary printing In 2, 4, 6, 8, 10 screen printing method characterized in that the printing by filling the gap between the drying and then printing. In a roll-to-roll screen printing apparatus, A primary press that uses roll-to-roll screen printing, prints one pattern, and then skips one pattern and prints the next pattern. Secondary printing machine which performs a printing operation by sequentially filling the patterns one by one in the space between the pattern and the dried pattern of the roll, and the first printing machine and the second printing machine are sequentially assigned to each subsequent one Screen printing apparatus comprising a primary dryer and a secondary dryer.

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