D - Textiles – Paper – 04 – H
Patent
D - Textiles, Paper
04
H
28/12, 154/70, 4
D04H 3/02 (2006.01) C03B 37/10 (2006.01) D04H 3/04 (2006.01)
Patent
CA 2028423
The specification of the instant invention discloses improvements in methods for making various types of mats of fiberous material. In particular, the improvements relate to methods for making continuous fiber glass strand mats using reciprocating strand feeders and a programmable motion controller to control both the rate of reciprocation and the rate at which strand is deposited from the feeders onto a moving conveyor so as to form mats of uniform density and thickness. Electric servomotors are used to reciprocate the feeders and also deposit strand therefrom. A closed-loop feedback circuit is used to accurately monitor and control the position of the feeders with respect to the conveyor as well as the rate of strand deposition. Methods for using the programmable motion controller described herein can increase the uniformity of needled, resin-impregnated, and uni-directional fiber glass mats.
Borden Ladner Gervais Llp
Ppg Industries Ohio Inc.
LandOfFree
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