Process for Making Metal Ledge on Stencil Scree

Owner Name: Delaware Economic Development Office Ken Anderson
Category: Nanotechnology

Description of Technology:  This invention relates to a process for making improved stencil screens which can be used for screen printing.  More particularly, it relates to a process for making a polymeric or metal ledge on one side of the stencil screen.

Patent Listing:
    1.  US Patnet No. 5,322,763, Issued June 21, 1994, "Process for Making Metal Ledge on Stencil Screen"

http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&1=50&d=PALL&RefSearch=yes&Query=PN%2F5322763

Market Potential:  Screen printing is used in both the graphic arts and electronics industries.  The basic concept in screen printing is to force a viscous material, an ink or paste, through apertures of a stencil screen.  A stencil screen has solid areas which prevent printing and penetrable areas which allow the deposition of a pattern onto a substrate.  The penetrable areas in the stencil sceen can be mesh of the save or variable size, open areas with tie lines holding the solid areas together, or any combination of the above.  Optionally, the stencil screen can have some open areas.  For graphic arts applications for the viscous material is usually in ink which is deposited on paper, fabric, plastic, etc. For electronic applications, thick film pastes of conductors, dielectrics and resistors can be screen printed onto appropriate electronic circuit substrates such as alumina or ceramic "green tape."

Benefits:

• prevents material from running together

Applications:

• improved stencil screens