The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2006
Filed:
Mar. 26, 2004
Robert Roberts, Ocala, FL (US);
Robert Roberts, Ocala, FL (US);
Other;
Abstract
This invention involves forward integration of the art paste extrusion process by adding a step to the processing sequence to change the uniaxially-oriented art form to a desirable planar biaxially-oriented form. This invention also involves the backward integration of the resin preparation to reduce the commercial coagulated dispersion resin particle size (average 500 micron) to the size range of colloidal size particles contained within the original 500 micron particle. In this small particulate form, the polytetrafluoroethylene (PTFE) resin can be blended more homogeneously and extruded with less turbulence in the plug extrusion process, the rheological mechanism of this extrusion process. The size reduction makes processing of micron size fillers possible in up to 90 percent volume of the PTFE resin. This invention also provides a direct and simple method of producing planar biaxially-oriented sheet and a source of resin formulations for fabricating other forms and shapes.