Patent ID: 8002117

Claim:
A method for sorting a gas-driven stream of generally flat and light-weight articles of varying dimensions comprising the steps of: feeding said stream of generally flat and light-weight articles to a sorting facility; orienting said generally flat and light-weight articles by using a downwardly inclined separation plate having air transmission holes through a centrifugal force which orients said generally flat and light-weight articles towards a sloping wall in a transition to a straight movement, said straight movement being substantially vertical in a falling direction, and wherein impurities pass through the air transmission holes; executing said sorting by executing an optical inspection and upon so finding a non-conforming article removing the latter from the stream, wherein said inspection and said sorting are executed during said substantially straight movement of said generally flat and light-weight articles, and in that said removing is executed by means of gas driving in a direction substantially transverse to said straight movement, and wherein said removing by means of gas driving is effected through suction.