TWM590528U - Screen plate structure for mitigating printing impact - Google Patents

Abstract

A screen structure for reducing printing impact, including: a screen frame; a screen cloth, stretched and fixed on the screen frame, the screen cloth includes a printing area, and the screen cloth includes a scraper surface and a printing surface An emulsion layer coated and disposed on the mesh fabric; a polymer material layer disposed on the side of the emulsion layer on the printing surface; and an air cushion layer disposed on the emulsion layer and the polymer material Between layers.

Description

Screen structure for reducing printing impact

This creation is about the structure of a printing screen, especially a screen structure that can reduce the impact of printing when the screen is printing.

Fig. 1a is a schematic diagram for explaining the printing process of the printing screen in the conventional technology; Fig. 1b is a schematic diagram for explaining the printing process of the printing screen in the conventional technology; Fig. 1c is a schematic diagram for Explain the printing process of printing screens in conventional technology. Please refer to FIG. 1a to FIG. 1c. In the conventional printing technology of screen printing, most of them use off-screen printing, that is, the screen printing plate 1 is placed above the object to be printed 2, and then the paste or The ink is scraped from the printing area A1 on the mesh 101 onto the object to be printed 2 to form a printing pattern. As can be seen from FIG. 1a, the set stroke of the scraper 3 will be greater than the area of the object to be printed 2. When the scraper 3 applies a downward pressure, it will pressurize the mesh 101, which will cause pressure points P1 and P2, P1 It is the point of force between the scraper 3 and the mesh 101, and the pressure point P2 is the bending point of the edge of the mesh 101 and the object 2 to be printed. At this time, if the periphery of the object 2 is sharper, it will be The pressure point P2 causes damage to the mesh 101.

As can be seen from FIG. 1b, the scraper 3 will start to apply force from the pressure point P2 to scrape the paste or ink from the printing area A1 on the mesh 101 to the object to be printed 2 to form a printing pattern. At this time, if the scraper The lower pressure channel of 3 is too large, the printing speed is fast, and it is easy to make the slurry or ink overflow from the entrance of the knife, that is, the pressure point P2. It can be seen from Figure 1c that the stroke of the scraper 3 will eventually reach the pressure point P3.

In addition, when the object to be printed 2 is a solar polycrystalline and single crystal wafer, the solar polycrystalline and single crystal wafer easily punctures the mesh 101 at its four corners.

It can be known from the above-mentioned conventional technology that the current printing screen structure will cause screen damage during the printing process. Based on the above reasons, how to provide a screen structure that can reduce the impact of printing during the printing process, so that the screen will not be damaged, is a matter to be solved.

In order to achieve the foregoing purpose, the creative department provides a screen structure that reduces the impact of printing, including: a screen frame; a screen cloth, stretched and fixed on the screen frame, the screen cloth includes a printing area, and the screen The cloth includes a doctor blade surface and a printing surface; an emulsion layer coated and disposed on the four corners of the mesh fabric; a polymer material layer disposed on the side of the mesh fabric on the printing surface; and a An air cushion layer is provided between the emulsion layer and the polymer material layer.

Preferably, the polymer material layer is further disposed on one side of the mesh cloth on the blade surface.

Preferably, when the printing surface of the mesh cloth is attached to an object to be printed placed on an area to be printed, the air cushion is laminated on the edge of the object to be printed.

Preferably, the emulsion layers at the four corners of the mesh cloth protrude toward the printing surface.

Preferably, the distance between the protruding emulsion layer and a printed pattern on the object to be printed is 800 μm.

Preferably, the air cushion layer is disposed along the corner of the printing area.

Preferably, the air cushion layer is disposed along the edge of the printing area.

The following describes the implementation of this creation in more detail with reference to drawings and component symbols, so that those skilled in the art can implement it after studying this manual.

FIG. 2 is a schematic diagram illustrating the screen structure for reducing printing impact according to an embodiment of the present invention; FIG. 3 is a schematic diagram illustrating the A-A cross-sectional structure in FIG. 2. 2 and 3, in an embodiment of the present creation, the screen structure 4 for reducing printing impact includes a screen frame 40, a mesh cloth 42, an emulsion layer 44, a polymer material layer 46, and an air cushion layer 48. The mesh cloth 42 is stretched and fixed on the mesh frame 40. The mesh cloth 42 includes a printing area A2, and the mesh cloth 42 includes a doctor blade surface S1 and a printing surface S2. The emulsion layer 44 is coated and disposed on the four corners of the mesh cloth 42, namely, the corner C1, the corner C2, the corner C3, and the corner C4. The polymer material layer 46 is provided on the side of the mesh cloth 42 on the printing surface S2. The air cushion layer 48 is provided between the emulsion layer 44 and the polymer material layer 46.

Wherein, the emulsion layer 44 is formed by applying the emulsion on the four corners of the mesh cloth 42 and performing exposure development, and in one embodiment of the present invention, the emulsion layer 44 on the four corners of the mesh cloth 42 can The printing surface S2 is convex, as shown in FIG. 3, to facilitate the formation of the air cushion layer 48, and in other embodiments of the present invention, the emulsion layers 44 on the four corners of the mesh cloth 42 may be flat on the mesh cloth 42. The polymer material layer 46 may be a film and directly attached to the mesh 42 on the side of the printing surface S2, and an air cushion layer 48 is formed between the emulsion layer 44 and the polymer material layer 46 by a bonding process. Furthermore, in an embodiment of the present invention, a printing area A2 can be formed on the mesh 42 by a laser development process, and a corresponding printing can also be formed on the polymer material layer 46 by a laser development process The printing area A3 of the pattern in the area A2.

On the other hand, in an embodiment of the present creation, the air cushion layer 48 is disposed along the corner of the edge of the printing area A2. In detail, it is disposed on the corner C1 of the printing area A2 on the mesh 42 and the corner C2. At the corner C3 and the corner C4, a figure eight structure is formed at the left-right symmetry of the mesh cloth 42, and the impact of the screen structure 4 during printing is reduced by the air cushion layer 48.

FIG. 4 is a schematic diagram illustrating the relationship between the screen structure for reducing printing impact and the object to be printed according to an embodiment of the present invention. Please refer to FIGS. 3 and 4. In an example of this creation, when the printing surface S2 of the mesh cloth 42 is bonded to a to-be-printed object 2 placed on a to-be-printed area 20 to perform a screen printing operation, the air cushion layer 48 will be stacked on the edge of the object to be printed 2, as shown by the interval in the guide dotted line in FIG. 4. In this way, when the mesh cloth 42 is in contact with the object to be printed 2 and a squeegee is used to scrape in the ink, the cushioning layer 48 can be used to provide printing buffer to prevent the mesh cloth 42 from being scratched or punctured by the edge of the object to be printed 2. Furthermore, when the doctor blade exerts force on the mesh cloth 42 to scrape the ink into the printing area A2 via the doctor blade surface S1 and form the printing pattern 22 on the object to be printed 2, the air cushion layer 48 can also be used to reduce the printing impact. To avoid the pressure that the scraper exerts on the mesh cloth 42 is too large to scratch the mesh cloth 42.

It is worth mentioning that please refer to FIGS. 3 and 4 again. In an embodiment of the present creation, the distance d1 between the protruding emulsion layer 46 and the printing area A2 is 800 μm. On the other hand, the width d2 of the air cushion layer 48 and the thickness of the air cushion layer 48 can be adjusted according to actual needs to provide the best cushioning effect to the mesh cloth 42.

FIG. 5 is a schematic diagram illustrating a cross-sectional structure of a screen structure for reducing printing impact according to another embodiment of the present invention. Referring to FIG. 5, in another embodiment of the present invention, the polymer material layer 46 is further disposed on the side of the mesh cloth 42 on the blade surface S1, and can be formed on the polymer material layer 46 by a laser development process A printing area A4 corresponding to the pattern of the printing area A2 is formed. Further providing a polymer material layer 46 on the blade surface S1 can further protect the mesh cloth 42 and reduce the impact of the blade on the mesh cloth 42.

FIG. 6 is a schematic diagram illustrating a screen structure for reducing printing impact according to another embodiment of the present creation. Please refer to FIG. 6, in yet another embodiment of the present creation, a screen structure 6 for reducing printing impact includes a screen frame 60, an emulsion layer 62, a mesh cloth 64, and a polymer material layer (not shown in the figure) Out) and an air cushion layer (not shown in the figure). The modification of this embodiment is that the emulsion layer 62 is arranged on the edge C of the mesh cloth 64 in a surrounding manner, and the entire mesh cloth 64 is the printing area, so the air cushion layer is also arranged along the edge C of the printing area, to The entire mesh fabric 64 is surrounded by an air cushion layer.

From the above, it can be seen that this creation successfully provides a screen structure that reduces the impact of printing. In this creation, an air cushion layer can be provided on the screen structure, so that the screen structure can be used to provide cushioning for the screen fabric of the screen structure during printing, so as to prevent the screen fabric from being printed. If the edge or scraper is scratched, the pressure of the scraper on the mesh cloth is too large to damage it.

The above are only the preferred embodiments to explain this creation, not to attempt to restrict the creation in any way, so any modification or change to the creation under the same spirit of creation , Should still be included in the scope of protection of this creative intention.

1‧‧‧Web version 101‧‧‧Mesh 2‧‧‧ Items to be printed 20‧‧‧To be printed 22‧‧‧Printed pattern 3‧‧‧Scraper 4, 6‧‧‧ screen structure 40、60‧‧‧frame 42, 64‧‧‧ Mesh 44, 62‧‧‧Emulsion layer 46‧‧‧ Polymer material layer 48‧‧‧Air cushion S1‧‧‧Scraper surface S2‧‧‧Seal surface d1, d2‧‧‧Distance P1, P2, P3 ‧‧‧ pressure point A1, A2, A3, A4 ‧‧‧ printing area C1, C2, C3, C4 ‧‧‧ corner

After reading the detailed description below with reference to the accompanying drawings, those with ordinary knowledge in the art can have a better understanding of the various aspects of the creation and their specific features and advantages. Among these drawings: FIG. 1a is a schematic diagram illustrating the printing process 1 of the printing screen in the conventional technology; 1b is a schematic diagram illustrating the second printing process of the printing screen in the conventional technology; FIG. 1c is a schematic diagram illustrating the third printing process of the printing screen in the conventional technology; FIG. 2 is a schematic diagram illustrating a screen structure for reducing printing impact according to an embodiment of the present invention; 3 is a schematic diagram illustrating the cross-sectional structure of A-A in FIG. 2; 4 is a schematic diagram illustrating the relationship between the screen structure for reducing printing impact and the object to be printed according to an embodiment of the present invention; 5 is a schematic cross-sectional view illustrating a screen structure for reducing printing impact according to another embodiment of the present invention; and FIG. 6 is a schematic diagram illustrating a screen structure for reducing printing impact according to yet another embodiment of the present creation.

40‧‧‧Net frame

42‧‧‧Mesh

44‧‧‧Emulsion layer

46‧‧‧ Polymer material layer

48‧‧‧Air cushion

S1‧‧‧Scraper surface

S2‧‧‧Seal surface

C1, C2‧‧‧ corner

A2, A3‧‧‧ printing area

Claims (7)

A screen structure for reducing printing impact, including: A frame A mesh cloth, stretched and fixed on the mesh frame, the mesh cloth includes a printing area, and the mesh cloth includes a blade surface and a printing surface; An emulsion layer, coated and set on the four corners of the mesh; A layer of polymer material on the side of the printing surface of the mesh cloth; and An air cushion layer is disposed between the emulsion layer and the polymer material layer. According to the screen structure described in Item 1 of the patent application range, the polymer material layer is further provided on one side of the mesh surface on the blade surface. According to the screen structure described in item 1 of the patent application scope, when the printing surface of the mesh cloth is attached to an object to be printed placed on an area to be printed, the air cushion is laminated on the surface of the object to be printed On the edge. The screen structure according to item 1 of the scope of the patent application, wherein the emulsion layer on the four corners of the mesh cloth protrudes toward the printing surface. According to the screen structure described in item 4 of the patent application range, the distance between the protruding emulsion layer and a printed pattern on the object to be printed is 800 μm. According to the screen structure described in item 1 of the patent application scope, the air cushion layer is disposed along the corner of the printing area. The screen structure according to item 1 of the patent application scope, wherein the air cushion layer is provided along the edge of the printing area.

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