TWM473307U - Improved screen printing structure - Google Patents

Description

Screen structure improvement

This creation relates to a screen structure, in particular to a screen structure improvement that can increase the screen resistance to India and enhance the coating of the emulsion relative to the mesh.

Mesh cloth is an important tool for screen printing. It can also be said to be an important basis for screen printing. It is mainly made up of Tedron fiber, nylon fiber or metal mesh cloth, which is cross-woven in the warp and weft directions. The tension is opened and fixed on a frame. In addition to forming the pattern, the function of the mesh can also control the amount of ink that is transmitted during screen printing; therefore, the mesh has a very large influence on the precision of printing, the thickness of the ink, and the amount of ink permeation.

The printing principle of screen printing is to use the chemical reaction of the emulsion to the ultraviolet light and the opening formed by the warp and weft of the screen to perform photosensitive plate making, so that the non-printed portion is photohardened to block the mesh, and In the printed part, the emulsion is dissolved and hollowed out when it is not chemically reacted. When screen printing is performed, the operator can apply pressure by the doctor blade to scrape the ink, so that the ink is printed on the printed matter through the hollow mesh to achieve the printing purpose.

However, since the mesh itself blocks the travel of light, the conventional exposure machine usually only exposes one side of the screen, so it is easy to cause the screen. The lack of exposure of the backlight surface makes the emulsion of the screen backlight surface not completely hardened. During the development process, the uncured emulsion is washed away by water, which in turn affects the structure of the screen. The above situation is more apparent in screens using metal mesh. In order to reduce the occurrence of the above situation, the industry has previously extended the exposure time of the screen to increase the exposure effect of the screen backlight emulsion. However, the extension of the exposure time also causes the temperature of the workspace to rise, causing the film to shrink and affecting the accuracy of screen printing. For the above reasons, the conventional screen is prone to the defect that the emulsion fails to completely cover the mesh, and the post-printing number of the screen is reduced.

For the above reasons, the purpose of the present work is to provide a screen structure improvement that allows the emulsion to completely coat the mesh by multiple exposures, thereby enhancing the durability of the screen.

To achieve the foregoing objectives, the present invention provides a screen structure improvement comprising a mesh layer, a first emulsion layer, and a second emulsion layer. The mesh layer is formed by interlacing a plurality of warp threads and a plurality of weft threads. The first emulsion layer covers a portion of the mesh layer, and a plurality of first openings are formed on the first emulsion layer. The second emulsion layer covers a portion of the mesh layer and completely encloses the mesh layer together with the first emulsion layer. A plurality of second openings are formed on the second emulsion layer, and the second openings correspond to the first openings.

According to an embodiment of the present invention, one side of the first emulsion layer and one side of the second emulsion layer are in close contact with each other.

According to an embodiment of the present invention, the first emulsion layer and the second emulsion layer Further included is at least a third emulsion layer. The at least one third emulsion layer is in intimately adhered to the first emulsion layer and the second emulsion layer, respectively, and completely wraps the mesh layer together with the first emulsion layer and the second emulsion layer. The third emulsion layer is formed with a plurality of third openings corresponding to the first openings and the second openings.

10‧‧‧ mesh layer

31‧‧‧First emulsion layer

310‧‧‧ first opening

311‧‧‧Printed surface

32‧‧‧Second emulsion layer

320‧‧‧second opening

321‧‧‧Scrape face

33‧‧‧ third emulsion layer

330‧‧‧ third opening

The first figure is a side sectional view showing a screen protecting structure of the first embodiment of the present invention; the second drawing is a side sectional view showing the screen protecting structure of the second embodiment of the present invention.

The implementation of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement the present specification after studying the present specification.

The first figure is a side view showing a modification of the screen structure according to the first embodiment of the present creation. As shown in the first figure, the screen structure according to the first embodiment of the present invention includes a mesh layer 10, a first emulsion layer 31, and a second emulsion layer 32. The mesh layer 10 is formed by interlacing a plurality of warp threads and a plurality of weft threads. The first emulsion layer 31 covers a portion of the mesh layer 10, and a plurality of first openings 310 are formed on the first emulsion layer 31. The second emulsion layer 32 covers a portion of the mesh layer 10 and completely encloses the mesh layer 10 together with the first emulsion layer 31. A plurality of second openings 320 are formed on the second emulsion layer 32, and the second openings 320 correspond to The first opening 310.

According to the screen structure improvement of the first embodiment of the present invention, through the arrangement of the second emulsion layer 32, the structural defects caused by the one-side exposure of the screen can be solved in the conventional screen structure. More specifically, when the first emulsion layer 31 is exposed, the light source is exposed from a printing surface 311 of the screen to harden the first emulsion layer 31. After the first emulsion layer 31 is developed, the backlight surface of the screen may not completely cover the portion of the mesh layer 10 due to insufficient exposure, and may be formed by another layer of emulsion, that is, the second emulsion as described above. Layer 32 is used to further completely coat the mesh layer 10. The first emulsion layer 31 and the second emulsion layer 32 are closely attached to each other. In this way, the coating property of the squeegee surface 321 of the emulsion on the screen can be improved, so that the squeegee surface 321 of the screen can be smoother, and the blade does not break the structure of the mesh layer 10 when traveling, and the mesh can be added. The version is resistant to India.

The second figure is a side sectional view showing a screen protecting structure according to a second embodiment of the present creation. As shown in the second figure, in the second embodiment of the present creation, the third emulsion layer 33 is further included between the first emulsion layer 31 and the second emulsion layer 32. The third emulsion layer 33 is in close contact with the first emulsion layer 31 and the second emulsion layer 32, respectively, and completely wraps the mesh layer together with the first emulsion layer 31 and the second emulsion layer 32. A plurality of third openings 330 are formed on the third emulsion layer 33, and the third openings 330 are formed at the same positions as the first openings 310 and the second openings 320.

When the mesh layer 10 is still not completely covered according to the configuration in the first embodiment, the configuration in the second embodiment of the present invention can be employed to enhance the coating of the emulsion with respect to the mesh layer 10. Similarly, if a third emulsion layer 33 is not sufficient, A plurality of third emulsion layers 33 may be disposed between the first emulsion layer 31 and the second emulsion layer 32 until the mesh layer 10 is completely covered by the emulsion.

It can be seen from the above embodiments that the improvement of the screen structure provided by the present invention has industrial use value, but the above description is only a description of the preferred embodiment of the present invention, and those skilled in the art can according to the above description. And for all other improvements, these changes are still within the spirit of this creation and the scope of patents defined below.

10‧‧‧ mesh layer

31‧‧‧First emulsion layer

310‧‧‧ first opening

311‧‧‧Printed surface

32‧‧‧Second emulsion layer

320‧‧‧second opening

321‧‧‧Scrape face

Claims (3)

An improved screen structure having a mesh layer formed by interlacing a plurality of warp threads and a plurality of weft threads; a first emulsion layer covering a portion of the mesh layer and on the first emulsion layer Forming a plurality of first openings; and a second emulsion layer covering a portion of the mesh layer and completely encapsulating the mesh layer together with the first emulsion layer, wherein the second emulsion layer is formed thereon a plurality of second openings corresponding to the first openings. The screen structure improvement according to the first aspect of the invention, wherein one side of the first emulsion layer and one side of the second emulsion layer are in close contact with each other. The screen structure improvement according to the first aspect of the invention, wherein the first emulsion layer and the second emulsion layer further comprise at least a third emulsion layer, and the at least one third emulsion layer respectively The first emulsion layer and the second emulsion layer are closely adhered, and the mesh layer is completely covered together with the first emulsion layer and the second emulsion layer; wherein the third emulsion layer is formed with a plurality of third layers Openings, the third openings are corresponding to the first openings and the second openings.