A printed wiring board has conductor patterns (12) having a thickness (t1) of 50 m or more on an insulating substrate (11). An insulating layer (5) is provided in regions (L) on the conductor patterns and on the insulating substrate in regions (S) between the conductor patterns. A thickness (t.sub.L) of the insulating layer on the conductor patterns is preferably 0.1-1 times the conductor thickness (t.sub.1). The insulating layer is formed on the conductor patterns and on the insulating substrate between the conductor patterns by printing a resin composition using screen printing and then curing the resin composition. The resin composition has a viscosity of 50-300 P at 25 C. and a thixotropic index of 1.1-3.5. A screen printing plate used for screen printing has a mesh thickness of 2.2 or more times a yarn diameter of yarns.

In embodiments, the present invention relates to a method of producing a multilayered printed item, comprising: (a) providing a coating of curable composition comprising a polymer powder, at least one plasticizer, and at least one monomer and/or oligomer, onto the substrate or a thereon previously applied layer or coating; (b) heating the curable coating composition to a temperature of about 70-120 C., to provide a gelled curable coating; (c) providing a coating of curable composition comprising a polymer powder, at least one plasticizer, and at least one monomer and/or oligomer, onto the previously applied layer or coating; (d) heating the other curable as above, to provide second gelled curable coating; (e) before crosslinking is performed, the multilayer-coated substrate formed is heated to a temperature of about 130-160 C.; and (f) crosslinking the heated multilayer-coated substrate, by irradiation and/or subjection to heat at a temperature of about 165-190 C.

To provide a screen plate that can allow printing accuracy to be improved. A screen plate comprising a plate frame and a screen gauze formed of warp and weft fibers each made of a synthetic fiber, wherein the screen gauze is stretched on the plate frame under application of a predetermined tensile force, and the thickness of the screen gauze stretched on the plate frame is 88% or less based on the thickness of the screen gauze under application of no tensile force.

A PU printing method and system including a textile component; and a rotary screen device component. More specifically, the system can include: a source of PU material; a rotary screen containing a squeegee blade or magnetic roller that is connected to the PU material source; means to carry the textile in proximity to the rotary screen and in position to receive a print; and a source of pressure, hydrodynamic or magnetic, to force the PU through the rotary screen and onto the textile.

Disclosed is a precision cut printing screen in which the features of a printing pattern are defined on a sheet material by a plurality of apertures within a target printing boundary. Also disclosed is a method of making the printing screen.

A method of screen printing an image on a substrate, such as rotary screen printing, includes using a printing screen having a surface structure at its printing side and attached imaged lacquer layer having open areas defining the image to be printed, where the image includes pixel based design elements, the printing screen has a parallelogram pattern, preferably an orthogonal pattern, of screen openings and the open areas of the imaged lacquer layer representing the pixel based design elements are arranged in an orthogonal raster.

A direct to mesh (DtM) screen printer for creating a screen stencil is provided. The DtM screen printer includes a frame to hold a pre-stretched mesh in place during application of a jettable emulsion, a fixture to hold the frame, a platen to hold a release fluid against one side of the pre-stretched mesh, a fluid dispenser for dispensing the release fluid onto the platen or mesh, and a printer carriage supporting a print head for printing the jettable emulsion on a side of the pre-stretched mesh opposite the platen. A process is also provided, the process being for using the DtM screen printer to prepare the screen stencil for screen printing.

A stencil for use in stenciling complex symbols incorporates a stencil substrate employing a flexible material, having a plurality of symbols arranged thereon. A plurality of folding stiffeners are incorporated in the substrate, each stiffener being positioned to split symbols having stencil cutouts forming isolated elements within an interior of the symbol. The stiffeners are foldable about a vertex, to collapse into a raised position and bring together the split symbol, with the stiffeners supporting the isolated elements created by the cutouts and portions of the stencil cutouts forming the symbols that extend into coincident channels in the folding stiffeners, to bridge adjoining portions of said split characters.

A stencil for use in stenciling complex symbols incorporates a stencil substrate employing a flexible material, having a plurality of symbols arranged thereon. A plurality of folding stiffeners are incorporated in the substrate, each stiffener being positioned to split symbols having stencil cutouts forming isolated elements within an interior of the symbol. The stiffeners are foldable about a vertex, to collapse into a raised position and bring together the split symbol, with the stiffeners supporting the isolated elements created by the cutouts and portions of the stencil cutouts forming the symbols that extend into coincident channels in the folding stiffeners, to bridge adjoining portions of said split characters.

A metal wire includes tungsten or a tungsten alloy. The metal wire has a diameter of at most 13 ?m, a tensile strength of at least 4.8 GPa, and a natural hanging length per 1000 mm of at least 800 mm.