C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
49/8
C03B 37/10 (2006.01) C03B 37/16 (2006.01) D01G 1/04 (2006.01)
Patent
CA 1097920
ABSTRACT OF THE DISCLOSURE In a system for manufacturing chopped strands of glass filaments wherein a multiplicity of glass fila- ments extruded through orifices in the bottom of at least two spinning furnaces and applied with a sizing agent are collected to form at least two strands, which are brought into contact with the circumferential surface of a feed roller through a predetermined angle so as to be drawn and attenuated by frictional force exerted by the circumferential surface of the feed roller while the strands are cut into chopped strands of a predetermined length with a cutter roller in contact with the feed roller, an auxiliary feed roller is disposed adjacent to one end portion of and in axial alignment with the main feed roller and is driven independently thereof. An auxiliary cutter roller is adapted to contact under pressure the circumferential surface of the auxiliary feed roller to rotate therewith. In introduction of a strand onto the main feed roller, the auxiliary feed roller is maintained substantially stationary or driven at a rela- tively low speed while the main feed roller is rotated at a normal attenuation speed, and the strand is wound on and taken up by the auxiliary feed roller. The speed of the auxiliary feed roller is gradually increased to a normal attenuation speed, and thereafter the strand on the auxiliary feed roller is moved onto the main feed roller.
306157
Fujita Toshihito
Kikuchi Toshiaki
Nakazawa Koji
Gowling Lafleur Henderson Llp
Nitto Boseki Co Ltd.
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