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Vacuum-formed plastics moulding for education and research.

A compact, easy-to-use vacuum-forming machine intended for use in schools, colleges, research laboratories or small production facilities has been introduced by a British company, at a price much lower than any comparable competition.

Incorporating many safety features to protect students or pupils who have access to it, Cornell Copyright Minor, from A R Cornell, produces plastic mouldings to full professional standards and is ideal for teaching and demonstration work. It also ideally suits industry for research, trials or short production runs where it eliminates the need to interrupt production on larger machines. As the whole process is clearly visible, it has been found to have entertainment as well as educational value for the younger children and thus promotes a fascination for science and technology at an early age.

The machine can work with such materials as acrylic, polyvinyl chloride (PVC), alpha butadiene styrene (ABS), cellulose acetate butyrate (CAB), high-impact polystyrene (HIP) and polycarbonate, many of which are available from the manufacturer. Plastic sheets up to 330 x 229 mm (13 x 9 in) are handled, the forming aperture being 288 x 187 mm (11.3 x 7.4 in) and the maximum pattern height 115 mm (4.5 in).

Sheathed radiant infrared heaters provide a total of 1 kW to the sheet and a vacuum of-635 mm Hg is available for product forming. A separate vacuum outlet allows the machine's vacuum pump to be used for other purposes.

Safety is a prime consideration in the design which incorporates both a residual-current circuit breaker and a thermal-overload device. Full earth bonding and a no-volt cutout also serve to protect users who may not be familiar with industrial safety procedures. A grille-guard prevents contact with the heater surfaces. The machine is intended for benchtop operation, measuring 430 x 420 x 545 mm (16.6 x 16.5 x 21.4 in) and weighing 28 kg (62lb). The unit operates from standard singlephase a.c. mains power supplies.
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Title Annotation:New Products
Publication:Economic Review
Date:Oct 1, 1992
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