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:
Jul. 05, 2016
Filed:
Sep. 10, 2015
Thomas M. Tao, Greer, SC (US);
Thomas M. Tao, Greer, SC (US);
Other;
Abstract
A melt-blowing die tip includes a first die tip half and a second die tip half with complementary mating surfaces. A flow system is engraved onto at least one of the mating surfaces. The flow system includes linear melt troughs, which are fluidly connected by channels. Spinning orifices downstream of the last melt trough, which may have diameters over an exceptionally broad range, produce fibers as small as nano-scale. Fasteners secure the two die tip halves, and at least one of the channels includes a curved portion to direct flow around a fastener. The resulting die tip has increased pressure tolerance, greater productivity, reduced costs, and supports the economical mass production of super fine fibers. Optionally, an engraved die plate may be inserted between the die tip halves. When both sides of the die plate are engraved with a flow system, the die may produce bi-component fibers.