Abstract: An apparatus for sorting paper materials includes a separating mechanism for thinning the paper materials and a sensing mechanism for classifying the paper material according to type. The separating mechanism includes a plurality conveyor belts operating at successively higher speeds, whereby passing materials from one conveyor belt to another conveyor belt results in spreading the paper material. The sensing mechanism includes a mechanical striking device to strike the paper material, a microphone to detect the sound caused by the striking device and an evaluation unit to determine the type of paper material on the basis of the sound.
Type:
Grant
Filed:
May 15, 1995
Date of Patent:
May 27, 1997
Assignee:
DST Deutsch System-Technik GmbH
Inventors:
Walter Thust, Jurgen Kirchhoff, Hans-Dieter Held, Leo Uelhoff