QUALITY ASSURANCE IN YARN PRODUCTION.

The balance between the costs and quality of raw materials, the costs of production, and overall profits is examined relative to yarn production. Profits are often limited by quality control programs. A plan for on-line monitoring and sampling is described for various processes in combed cotton ring spinning and open end rotor spinning. 3..

AUTOMATION IN CARDED-YARN AND SEMI-WORSTED SPINNING.

The direct and indirect linking of ring frame and automatic cone winder are described for spinning carded and semi-worsted yarns. Karl Mayer has developed two integrated systems: the direct link and the indirect link. Automating the winding process is discussed. Direct linking is compared to indirect linking.

AUTOMATION IN CARDED-YARN AND SEMI-WORSTED SPINNING.

Two integrated systems by Karl Mayer are described for direct and indirect linking of the ring frame and the automatic cone winder in spinning carded and semi-worsted yarns. The direct link system connects the cone winder directly with the spinning machine. The indirect system uses pallets. Specifications and efficiency improvements are n..

AUTOMATIC CLASSIFYING AND PALLETING SYSTEM FOR SPINNING SPOOLS.

Hauser's automatic classifying and palleting system for spinning spools increases productivity by automatically weighing, sorting, and identifying spinning spools according to serial number, machine, position, and thread numbers. Specifications for the individual components in this system include the trolleys, M1-5 manipulators, buffer st..

BOBBIN STRIPPER FOR OPEN END BOBBINS.

The construction and operation of Brouwer's OE-30 bobbin stripper are described. The cutting principle is based on the AS-30 ringtube stripper.

FOR SPINNING PREPARATION.

Marzoli presented their spinning preparation line at the 4th OTEMAS in October. The line consists of the B 12/E pivoting automatic bale plucker, B 150 motor fan for chute feeding, B 136 card feeding silo, CX 300 card, and PX 1 comber.

PREPARATION FOR HIGH QUALITY SPINNING.

Sant' Andrea Novara presented three new machines for processing fine and extra fine fiber at the 4th OTEMAS in October. The P90 rectilinear combing machine, SHS multihead drawing frame, and RF/2a vertical drawing finisher are described.

Technology Refines Yarn Production.

An overview of recent developments in yarn manufacture reveals that automation and online monitoring have improved the quality and productivity of short staple spinning. Schlafhorst's Corobox SE 11 and Rieter's AEROBOTIC technology enable production rates of 220 meters per minute at rotor speeds of 150,000 rpm. Direct spindle drive, such ..

SERVOLAP -- Card Regulator.

Houget Duesberg Bosson's Servolap high performance monitoring system features centralized computer controls for easy management of all attached machines and auxiliary equipment. An isotopic ray continuously measures the yarn ahead of the feeder rolls. A scintillator tube converts the residual radiation into electronic signals for analysis..

Microfeed 2000.

William Tatham Limited's Microfeed 2000 advanced fiber delivery monitoring and control system features an accurate weighing device, variable speed feeder rolls, a 68000 microprocessor, built-in diagnostics, and alphanumeric displays. The system displays production rates, feeder speed, doffing speed, and web weight in either metric or conv..