JP4640605B2 - Screen plate manufacturing method - Google Patents

Description

  The present invention relates to a method for producing a screen plate.

  As a screen plate used for screen printing, there is a combination-stretched screen plate (see Patent Document 1). The combination-stretched screen plate has both elasticity and rigidity suitable for a screen plate, and has a printing screen in the center of the screen plate and a support screen in the periphery thereof.

  The printing screen at the center has rigidity suitable for high-precision printing while maintaining the shape and dimensions of the printing section. In addition, the support screen in the peripheral portion generates elasticity suitable for bringing the printing screen closer to the printing target and realizing good plate separation while maintaining a state of being printed with high accuracy.

Such a combination-stretched screen is usually manufactured as follows. First, a support screen larger than the printing screen is prepared in advance, and the printing screen placed on the plate is bonded to the lower surface of the central portion of the support screen. And the center part which overlaps with the screen for printing among the parts of a support body screen is cut off. As a result, a combination-stretched screen plate having a printing screen having a rectangular shape in a plan view at the center and a support screen having a ring shape in a plan view around it is obtained.
JP 2001-171080 A

  However, in the combination-clad screen plate manufactured as described above, the outer edge portion of the printing screen is supported by an elastic support screen, which may cause distortion in the printing screen.

  The present invention has been made in view of the above, and an object of the present invention is to provide a method for manufacturing a screen plate capable of suppressing distortion and realizing high-precision printing.

  In order to solve the above-described problems, a method for producing a screen plate according to the present invention includes a step of stretching a support screen, a step of stretching a printing screen, and a tension while keeping the printing screen stretched. A step of joining to the support screen in a state of being installed; a step of stretching the support screen to a screen frame; and a portion of the portion of the support screen that overlaps the printing screen after the joining. And a step of removing.

  Preferably, the step of stretching the printing screen includes fixing the printing screen to a stretching frame.

  Preferably, the step of joining the printing screens includes adhering the printing screen to the support screen at an inner portion of the tension frame.

  According to the present invention described above, the printing screen from which the strain has been removed by applying tension in advance is joined to the support screen in such a state that it is stretched as such. For this reason, the printing screen is not bonded to the support screen in a state where the distortion is inherent, and the printing screen is suppressed from being distorted, so that higher-precision printing can be realized.

  Further, when the step of stretching the printing screen includes fixing the printing screen to the stretching frame, the printing screen is brought into the plating step together with the stretching frame, and the printing screen by plating is removed. It is easy to improve the strength.

  Further, in the case where the step of joining the printing screen includes bonding the printing screen to the support screen in the inner portion of the tension frame, the tension in which the distortion in the printing screen has been removed. The installation state is maintained continuously and reliably.

  The other features of the present invention and the operational effects thereof will be described in more detail with reference to the accompanying drawings.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

  FIG. 1 is a perspective view of a combination-clad screen plate according to the present embodiment. The combination-stretched screen plate 1 includes a printing screen 3, a support screen 5, and a screen frame 7.

  The printing screen 3 is a mesh member having a rectangular shape in a plan view at a substantially central portion of the combination-stretched screen plate 1. Further, the printing screen 3 has a rigidity suitable for performing high-precision printing while maintaining the shape and dimensions of the printing portion, and specifically, a fiber having rigidity such as metal or ceramic. It is the mesh member manufactured by.

  The support screen 5 is a mesh member that is around the printing screen 3 and has a square ring shape in plan view. The inner peripheral edge of the support screen 5 is connected to the outer peripheral edge of the printing screen 3, and the outer peripheral edge of the support screen 5 is connected to the screen frame 7.

  In addition, the support screen 5 has elasticity suitable for bringing the printing screen 3 close to the printing target during squeegee and achieving good separation while maintaining a high-precision printed state. generate. Specifically, the support screen 5 is a mesh member made of synthetic resin fibers such as polyester and nylon.

  The screen frame 7 supports the outer peripheral edge of the support screen 5 from the lower surface of the screen, and is a rigid body having a square ring shape in plan view.

  Next, a method for manufacturing the combination-clad screen plate 1 having such a configuration will be described. 2 and 3 show a cross section taken along line II of FIG.

  First, as shown in FIG. 2A, as a step of stretching the support screen 5, the support screen 5 is held in a state where an appropriate magnitude of tension is applied.

  Next, as shown in FIG. 2B, as a step of stretching the printing screen 3, the printing screen 3 is held in a state where an appropriate tension is applied. Specifically, the printing screen 3 is attached to the extension frame 9. The tension frame 9 supports the outer peripheral edge of the printing screen 3 from the lower surface of the screen, and is a rigid body that forms a rectangular ring shape in plan view.

  Subsequently, as shown in FIG. 2C, the stretched printing screen 3 is disposed below the stretched support screen 5. At this time, the base plate 11 is disposed inside the extending frame 9, and further, the arrangement is such that the base plate 11 is slightly closer to the support screen 5 than the extending frame 9.

  Specifically, after positioning the tension frame 9, the base plate 11 may be moved closer to the support screen 5, and conversely, the base plate 11 is positioned closer to the support screen 5, The tension frame 9 may be separated from the support screen 5. Alternatively, the relative positional relationship between the extending frame 9 and the base plate 11 may be created in advance, and both may be brought close to the support screen 5 as they are.

  Next, as shown in FIG. 3A, the stretched printing screen 3 is joined to the stretched support screen 5. Specifically, the adhesive 13 is applied annularly inside the tension frame 9. As a result, the printing screen 3 is bonded to the support screen 5 inside the tension frame 9.

  Further, as shown in FIG. 3A, the support screen 5 is fixed in a state where tension is applied to the screen frame 7.

  Next, as shown in FIG. 3B, the portion of the support screen 5 where the printing screen 3 overlaps is removed. Specifically, the inside of the adhesive 13 arranged in a ring shape is cut into a ring shape, and the unnecessary portion 5a of the support screen 5 is removed.

  By removing the unnecessary portion 5a of the support screen 5, the tension in the annular portion 5b of the support screen 5 is also transmitted to the printing screen 3, and the tension T5 of the support screen 5 and the printing screen 3 becomes uniform. However, it is preferable that the tension T3 applied to the support screen 5 is equal to or slightly higher than the tension T4 applied to the printing screen 3 in the state before cutting shown in FIG. It is.

  Further, as shown in FIG. 3C, the unnecessary portion 3a located outside the annular adhesive 13 and the tension frame 9 joined thereto are cut out of the portion of the printing screen 3, The combination tensioned screen plate 1 shown in FIG. 1 is obtained.

  As described above, in the method for manufacturing the combination-stretched screen plate 1 according to the present embodiment, the printing screen 3 in which distortion is removed by applying tension to the stretched support screen 5 in advance. It joins in such a state that it is stretched. That is, the printing screen 3 is not bonded to the support screen 5 in a state in which the distortion is inherent, and the printing screen 3 is distorted even if it is finally supported by the elastic support screen 5. It can suppress having. For this reason, higher-precision printing can be realized.

  Further, since the printing screen 3 is bonded to the support screen 5 inside the extending frame 9, the unnecessary portion 5a of the support screen 5 is removed thereafter, and the printing screen 3 and the support screen 5 are separated. The stretched state in which the distortion in the printing screen 3 is removed is continuously and reliably maintained until the annular portion 5b is connected in a tension transmission relationship.

  Further, the printing screen 3 is stretched by using a tension frame 9. For this reason, before joining with the support body screen 5, the printing screen 3 is brought into the plating process together with the tension frame 9 in the tensioned state in which the distortion is removed, and the printing screen 3 by plating is removed. The strength can also be improved.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  First, the timing for stretching the support screen 5 and the timing for stretching the printing screen 3 are not particularly limited as the context. In any case, when the printing screen 3 is joined to the support screen 5, both the printing screen 3 and the support screen 5 may be maintained in a stretched state.

  Further, the arrangement relationship between the base plate 11 and the extending frame 9 is such that the base plate 11 is slightly closer to the support screen 5 than the extending frame 9 as shown in FIG. It is not limited to being. For example, as shown in FIG. 4, the base plate 11 can be simply used as a support means. Alternatively, the printing screen 3 may be bonded to the support screen 5 without using the base plate 11 if the stretched state is maintained and bonding can be suitably performed.

  Moreover, the timing which fixes the support body screen 5 to the screen frame 7 is not limited to embodiment mentioned above. That is, the timing for fixing the support screen 5 to the screen frame 7 may be before the printing screen 3 is joined to the support screen 5 or after the unnecessary portion 5a of the support screen 5 is cut off. Also good. Alternatively, the support screen 5 shown in FIG. 2A may be stretched using the screen frame 7 from the beginning.

  In addition, either the timing for cutting off the unnecessary portion 5a of the support screen 5 or the timing for cutting off the unnecessary portion 3a of the printing screen 3 and the extending frame 9 may be first.

It is a perspective view of the combination tension screen screen concerning one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line I-I in FIG. 1, illustrating a step of stretching each screen in the manufacturing method of the present embodiment. FIG. 2 is a cross-sectional view taken along the line II of FIG. 1, illustrating a bonding process, an unnecessary part removing process, and the like in the manufacturing method of the present embodiment. It is a figure which shows 1 process of the manufacturing method which concerns on the modified embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combination tension screen plate 3 Screen for printing 5 Support screen 7 Screen frame 9 Extension frame

Claims (6)

Stretching the support screen; and
Stretching the printing screen on the stretching frame ;
Bonding the printing screen to the support screen in a stretched state while the printing screen is stretched on the stretching frame ;
After the joining, removing a portion of the support screen where the printing screen overlaps , and cutting the tension frame from the printing screen ; and
A method for producing a screen plate comprising: The step of bonding the printing screen includes adhering the printing screen to the support screen at an inner portion of the tension frame.
The method for producing a screen plate according to claim 1. The step of cutting off the extending frame from the printing screen includes cutting out a portion of the printing screen bonded to the support screen that is located outside the portion bonded to the support screen.
The method for producing a screen plate according to claim 1 or 2. In the state before the excision, the tension applied to the support screen is higher than the tension applied to the printing screen.
The method for producing a screen plate according to any one of claims 1 to 3. Including the step of plating the printing screen together with the stretched frame in the stretched state before joining with the support screen,
The manufacturing method of the screen plate in any one of Claims 1 thru | or 4. The step of stretching the support screen includes fixing the support screen to a screen frame.
The method for producing a screen plate according to claim 1.