Bayer Aktiengesellschaft

Lanxess Deutschland Gmbh

Herbert Grasshoff

Detlev Joachimi

Matthias Bienmüller

Robert Hubertus Van Mullekom

Maarten De Bock

The invention describes a method of use of a conveying apparatus for the pneumatic conveyance of sized glass fibers, the sized glass fibers having a size extractability of at most 85%, preferably at most 50% and with particular preference at most 40%.

Method of use of a pneumatic conveying apparatus for conveying glass fibres with specific properties

A method and an apparatus for the pneumatic conveying of fine bulk material, in particular glass fibers. The apparatus includes (i) a pneumatic conveying pipe having an upstream first portion, a downstream second portion, and a discharge point located further downstream from second portion; (ii) a charging container that is in reversibly closeable communication with a charging point of pneumatic conveying pipe, charging point being located further upstream from first portion; (iii) a suction conveying device which is in reversibly closeable gaseous communication with a suction point located between first and second portions of pneumatic conveying pipe; (iv) a pressure conveying device that is in reversibly closeable gaseous communication with a portion of pneumatic conveying pipe at a point that is further upstream from charging point; (v) a conveying supplementary line having a closed end or a reversibly closeable end, pressure conveying device being in reversibly closeable gaseous communication therewith; and a plurality of shut-off devices providing reversibly closeable gaseous communication from conveying gas supplementary line into pneumatic conveying pipe.

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Moers, Germany

Herbert Grasshoff