A screen printing screen, having: a screen printing stencil carrier which is configured as a film which is provided with first recesses which are configured in such a way that they reach from one upper side to the underside of the film, anda screen printing stencil which is configured as a nonmetall
A screen printing screen, having: a screen printing stencil carrier which is configured as a film which is provided with first recesses which are configured in such a way that they reach from one upper side to the underside of the film, anda screen printing stencil which is configured as a nonmetallic masking layer which is connected fixedly to the underside of the screen printing stencil carrier, the masking layer being provided with second recesses which lie in congruence at least partially with the first recesses of the screen printing stencil carrier in such a way that a printing medium can pass through the first recesses of the screen printing stencil carrier from its upper side in the direction of the underside and through the second recesses of the masking layer to a substrate which can be placed underneath.
대표청구항▼
1. A screen printing screen, comprising: a screen printing stencil carrier constructed as a film having first recesses extending from an upper side to an underside of the film, anda screen printing stencil constructed as a nonmetallic masking layer and fixedly connected to the underside of the scree
1. A screen printing screen, comprising: a screen printing stencil carrier constructed as a film having first recesses extending from an upper side to an underside of the film, anda screen printing stencil constructed as a nonmetallic masking layer and fixedly connected to the underside of the screen printing stencil carrier, the masking layer disposed at least partially inside some of the first recesses of the film and extending from the underside of the film in the direction of the upper side of the film, without projecting beyond the upper side of the film, the masking layer comprising second recesses at least partially overlapping with the first recesses of the screen printing stencil carrier so as to enable a printing medium to pass through the first recesses from the upper side of the screen printing stencil carrier in the direction of the underside and through the second recesses of the masking layer to a substrate placed underneath. 2. The screen printing screen of claim 1, wherein the underside or the upper side, or both, of the film have a roughness Rz of less than 30 micrometers. 3. The screen printing screen of claim 1, wherein the underside or the upper side, or both, of the film have a roughness Rz of less than 2 micrometers. 4. The screen printing screen of claim 1, wherein the masking layer is formed from an emulsion. 5. The screen printing screen of claim 1, wherein the masking layer has a thickness in a range from 0.5 micrometer to 60 micrometers. 6. The screen printing screen of claim 1, wherein the masking layer comprises polyvinyl alcohol. 7. The screen printing screen of claim 1, wherein the screen printing stencil comprises a surface layer modifying wettability or passivation, or both, with respect to etching media. 8. The screen printing screen of claim 1, wherein the screen printing stencil carrier or the screen printing stencil, or both, comprise a projection protruding into a region of at least one of the first and second recesses, reducing a passage area for a printing medium. 9. The screen printing screen of claim 8, wherein at least one of the first recesses has an inlet opening for the printing medium on the corresponding upper side and an outlet opening printing for the medium on the corresponding underside, with an area of the inlet opening of the at least one of the first recess overlapping at most partly an area of the outlet opening of the at least one of the first recess, as viewed in a direction perpendicular to the area of the inlet opening. 10. The screen printing screen of claim 1, further comprising a spacer element disposed on the underside of the screen printing stencil carrier or the screen printing stencil, or both, wherein the spacer element is constructed to space the screen printing stencil carrier or the screen printing stencil from a plane, on which a substrate to be printed is placed. 11. The screen printing screen of claim 1, further comprising a frame having a clamping fabric for clamping the screen printing stencil carrier. 12. The screen printing screen of claim 11, wherein the screen printing stencil carrier includes depressions or openings, or both, and the clamping fabric forms a mesh, and wherein the clamping fabric and the screen printing stencil carrier are joined together by melted plastic entering the depressions or openings of the screen printing stencil carrier and the mesh of the clamping fabric.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (4)
Yokai, Takahiko, Manufacturing method of printed circuit board.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.