Textiles: fiber preparation – Working – Carding
Patent
1989-04-14
1990-11-20
Schroeder, Werner H.
Textiles: fiber preparation
Working
Carding
19 98, 19296, 19204, 19 65R, 19 65A, D01G 908, D01G 1540
Patent
active
049707590
ABSTRACT:
Apparatus for processing textile fibers is disclosed which includes a carding machine (14) and a batt former (A). Batt former (A) includes an air circulation loop which includes a plenum (B), fiber compacting chamber (C), air separating means (72, 74), acceleration channel (30), duct (46), and fan blower (54). Fan blower (54) has an adjustable angle of incidence "a"to direct a jet of fiber-laden air into plenum (B) against a splash plate (66) to cause fibers to be deposited in fiber compacting chamber (C) in a cross-directional profile so that fibers at side walls of the plenum may have increased residence time in the fiber compacting chamber compensating for side wall friction. A first separated air flow (5) is divided by side friction. A first separated air flow (5) is divided by side channels (92a, 92b) and combined with a second air flow (4) to form supercharged air flow regions at the sides of the air flow passing through acceleration channel (30). This accelerated air flow with supercharged side regions creates an air knife in combination with plate (26) which passes through teeth (28a) of opening roll (28) to doff fibers from the opening roll. In this manner, efficient doffing across a working width of opening roll (28) is achieved with minimum energy from fan (54). Fiber batt (10) is discharged from fiber compacting chamber (C) having a cross-directional profile which eliminates light edges on the web carded by carding machine (14). Alternate fiber supply modules may be attched to a supply inlet (22) of opening roll (28) due to the static pressure at the supply inlet and static pressure (P3) being either generally equal to, or less than, ambient. The air circulation loop provides a high static pressure (P1) at the fiber compacting chamber for enhanced fiber compaction without interference with the supply of fiber into the inlet (22).
REFERENCES:
patent: 3567288 (1971-03-01), Wood
patent: 4136911 (1979-01-01), Husges
patent: 4219289 (1980-08-01), Trutzschler
patent: 4403374 (1983-09-01), Wood
patent: 4657444 (1987-04-01), Pinto
patent: 4811463 (1989-03-01), Leifeld
Flint Cort
Izaguirre Ismael
Schroeder Werner H.
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