Back to results
US 4,137,363 AGranted
Matrix material for printing plates and method of manufacture thereof
AssigneeRogers Corporation
InventorsClarence G. Maron, Donald W. Sundstrom
Life of this patent
Estimating the term…
Abstract
A printing plate matrix is presented including mineral and/or organic fibers, thermosetting resin, and glass microbubbles uniformly dispersed throughout the material.
Claims16
A sheet of moldable matrix material for printing plates, including :
- fibrous material;
- thermosetting resinous material;
- and
- microbubbles;
- said fibrous material, said thermosetting resinous material and said microbubbles being substantially uniformly distributed throughout said sheet of matrix material, said thermosetting resinous material in said sheet of matrix molding material being less than fully cured and said sheet of matrix material being moldable under heat and pressure to form a printing plate matrix having sharp character definition.
2 more elements
The method of forming a sheet of moldable matrix material for printing plates, including the step of:
- mixing fibrous material, thermosetting resinous material and microbubbles to form a substantially uniform furnish;
- and
- forming said furnish into sheet material having said fibrous material, thermosetting resinous material and microbubbles dispersed substantially uniformly throughout said sheet material, said thermosetting resinous material being less than fully cured and said sheet of matrix material being moldable under heat and pressure to form a printing plate matrix having sharp character definition.
A sheet of moldable matrix material for printing plates comprising:
- a. fibrous material including organic fibers or mineral fibers or a mixture thereof;
- b. thermosetting resinous material;
- and
- c. glass microbubbles having a generally spherical shape, having diameters in the range from 5 microns to 300 microns, and constituting from 5 to 25 weight percent of the matrix material;
- said fibrous material, said resinous material and said glass microbubbles being substantially uniformly distributed throughout said sheet of matrix material, said thermosetting resinous material in said sheet of matrix molding material being less than fully cured and said sheet of matrix material being moldable under heat and pressure to cure said thermosetting resinous material and to form a printing plate matrix having sharp character definition.
2 more elements
Dependencies are inferred from the claim text.