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:
Apr. 11, 2017
Filed:
Aug. 10, 2011
Galliano Boscolo, Vigliano Biellese, IT;
Galliano Boscolo, Vigliano Biellese, IT;
BOMA Engineering SRL, Milan, IT;
Abstract
The apparatus () is used for producing melt-blown fibres (MF). It comprises a die head () with several spinning orifices, means () for extruding at least one melted polymeric material through the spinning orifices of the die head () in the form of meltblown filaments (f), and means () for blowing a hot primary gas flow (F) towards the outlet of the die head () in order to draw and attenuate the polymeric filaments (f) at the outlet of the die head, and a drawing unit () that is positioned below the die head (), and that is adapted to create an additional gas flow (F) that is oriented downstream to further draw and attenuate the meltblown filaments (f).