WCA March 2007

Technology News

New cast film take-off system

Wayne Machine has introduced a new medium sized ‘Yellow Jacket’ cast film take-off system that features orientation capability. This is accomplished by a second chill roll featuring a high precision speed ratio follower drive linked to the main chill roll drive. The closed loop AC Flux Vector drive system maintains the selected speed ratio between the two rolls, allowing the film to be orientated in the machine direction to the exact degree required. Once set, the motors are constantly monitored with encoders. The chill rolls feature double shell, spiral baffle construction with mirror finish chrome plating, and are direct driven with independent motors. A nip roll station is an integral part of the take-off system. The nip rolls also feature a precision speed ratio follower drive linked to the second chill roll that maintains the exact amount of film tension desired. Orientation and tension control are key to achieving critical mechanical property parameters in the finished film, especially when dealing with engineering and highly filled polymers. Various roll finishes are available to make specialised film, such as corrosion-resistant types for Teflon FEP, and anti-stick matte finishes for polyurethane films.

The new 30" (750mm) cast film take-off

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A complete emergency stop system opens the nip rolls and stops the chill rolls whenever air pressure drops, the safety chain is pulled or when a mushroom pushbutton is pressed. Screw jacks provide for easy height adjustment of the entire system. The new ‘Yellow Jacket’ cast film take- off systems are ideal for adding cast

Wanda wire . . . Wanda Galvanized, China, is a manufacturer and global exporter of galvanised iron wire, ranging in diameter from 0.18mm-4.5mm, with a zinc coating of 12-250gm 2 . film capability to existing extruders, as drop-in replacements for existing take-offs or as part of a complete cast film system including extruder, die, take-off and winder. Complete computer and SCADA control system interface is available for automatic, remote control and data logging and trending. Custom options, including pay-offs for fibre or paper-backed film are available. Wayne Machine & Die Company – USA Fax : +1 973 256 1778 Email : jlischak@waynemachine.com Website : www.waynemachine.com

Keeping set up times to a minimum Håmex’s complete range of exchangeable tungsten carbide inserts for dies and cutters eliminate the need for regrinding and allow replacements instead of the tools having to be scrapped. The patended dies have a rotatable and exchangeable insert of tungsten carbide with up to three profiles. Changing from one profile to another can be done very quickly, which allows three nail dimensions to be manufactured with minimum set up times. The cutters have an exchangeable insert with two cutting profiles. When worn to a certain level, the insert is turned 90 degrees to a new cutting profile. When both cutting sides are worn out, a new insert can be fitted to the holder. The complete range of tungsten carbide tools for nail manufacturing consists also of cutters for Enkotec machines and chisel feeders, cutters, punches and wire guides for Wafios N90 machines.

Coil sizes range from 25-800kg and are available by special order.

Håmex – Sweden Fax : +46 13 357660 Email : info@hamex.se Website : www.hamex.se

Wanda Galvanized – China Fax : +86 318 785 8884

Email : wandawiremesh@hotmail.com Website : www.galvanizedironwire.com

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Wire & Cable ASIA – March/April 2007