Contipro A.s.

Contipro Biotech S.r.o.

Marek Pokorny

Vladimir Velebny

Katerina Knotkova

Jan Klemes

Martin Fogl

Adela Kotzianova

Viadimir Velebny

Device for the production of nanofibrous and/or microfibrous layers having an increased thickness uniformity by spinning a liquid material (), said device comprising: a collecting electrode (), a spinning nozzle () for dispensing the liquid material () to be spun, an assembly for guiding the collecting electrode () and/or for guiding a base strip () along the collecting electrode () or adjacent to it, such that&#x2014;in the area faced by the outlet orifice () of the spinning nozzle ()&#x2014;the collecting electrode () and/or the base strip () move(s) in the direction (MD) spaced from the outlet orifice () of the spinning nozzle (), a power supply for generating a voltage of 10 to 150 kV between the collecting electrode () and the spinning nozzle (), at least one body (), which moves along the liquid surface to destabilize the locations of the points where fibres () are formed on the surface of the liquid material () at the outlet orifice () of the spinning nozzle (). The nanofibrous and/or microfibrous layers having an increased thickness uniformity are produced by spinning a liquid material () in an electrostatic field, wherein a body () is moved along the surface of the spun liquid in order to destabilize positions of locations, where the fibers originate.

Device and method for production of nanofibrous and/or microfibrous layers having an increased thickness uniformity

An apparatus for a production of two-dimensional or three-dimensional fibrous materials of microfibers or nanofibers containing a set of spinning metal nozzles connected to a first potential, a set of electrodes of a collector facing the set of the nozzles, arranged at regular spacing and connected to a second potential, and a collecting plate or a collecting cylinder for collecting microfibers or nanofibers settled between couples of adjacent electrodes of the collector. The substance of the invention is as follows: the set of the electrodes of the collector contains at least two electrodes of the collector arranged in a plane and the collecting plate in line of its intersection or a tangent to the collecting cylinder, that is perpendicular to a contact line with the plane of the electrodes of the collector, form with the plane of the electrodes of the collector an angle &#x3b1;, the size of which ranging between 0&#xb0; and 90&#xb0;, the collecting plate or the collecting cylinder being supported movably in relation to the electrodes of the collector in a direction lying in the plane that is perpendicular to the plane of the electrodes of the collector and in which the axis of the electrode lies, the direction of the collecting plate or the collecting cylinder movement forming with this electrode axis an angle &#x3b2;, the size of which ranging between 0&#xb0; and 90&#xb0;. Such arrangement enables creating of large areal and voluminous objects of ordered nanofibers.

Apparatus for production of two-dimensional or three-dimensional fibrous materials of microfibres and nanofibres

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Cenkovice, Czechia

Marek Pokorny