CHICAGO (Aug. 1, 2:30 p.m. EDT) — Parkinson Technologies Inc. has developed an automatic cross-cut turret winder for thick sheet that improves operator safety and productivity and sheet roll quality.
The system operates at line speeds of up to 300 feet per minute, according to plastics sales manager Kathleen McCarthy. It removes the operator from the difficult and hazardous task of manually cutting thick sheet and attaching it to a new core.
Features include full-speed cut-over, servo-driven razor cross-cut, in-line slitting and the ability to handle multiple core sizes, McCarthy said at her Woonsocket, R.I., firm's booth at NPE 2003 in Chicago. Parkinson shipped its first two orders for the winder just before NPE.
Another safety-driven product is a gear-reduction screen changer introduced by sister company Key Filters Inc. The manual screen changer requires a tenth or less of the force and much less time to change a screen compared with typical, lever-operated manual changers that entice operators to use hazardous lever bar extensions, according to the company.
Another sister firm, Marshall and Williams Plastics, features compression mold drawing technology to achieve biaxial orientation of cast plastic sheet. Sales manager Andrew Miller said the firm initially is focusing on polypropylene sheet. Most orientation occurs in the machine direction, improving strength and clarity, but enough strength is added in the cross direction to give the sheet more stiffness in thermoforming.
Miller said his company has an exclusive licensing agreement with ITW Inc.'s Signode division to use the technology in plastics other than PET industrial strapping, for which Signode employs the technique.