Vastex International has announced that its EconoRed conveyor dryers will now be equipped with an adjustable exhaust as standard.

The exhaust is designed to optimise the curing of printed textiles, direct-to-film (DTF) films and powdered adhesives while cooling the skin of the enclosure and minimising wasted heat.

Using a damper control knob, the user can adjust the volume of exhausted air from 100% to 10% to remove all fumes emitted in the heating chamber according to the size, weight, throughput and ink type of direct-to-garment (DTG) and screen-printed garments and the dwell time needed to cure powdered adhesives of DTF images or screen-printed transfers.

Excess air flow unnecessary for exhausting of fumes is diverted and filtered to cool the double-wall skin of the heating chamber for worker safety.

Vastex International president Mark Vasilantone said: “A wide range of variables determines the amount of exhaust air needed for any given run, from high-capacity evaporation and curing of water-based pretreatment and DTG-printed inks to powdered DTF adhesive and screen-printed transfer films that off-gas significantly yet must be prevented from lifting off the conveyor belt due to high volumes of exhausted air.”

Together with digital control of heater temperatures in one-degree increments and variable belt speeds from 0.55 to seven metres per minute, the adjustable exhaust allows operators to fine-tune all critical drying parameters on a job-to-job basis, while accommodating the differing exhaust requirements of systems having multiple heating chambers.

The adjustable exhaust is available on all EconoRed Series II and III high-capacity dryers in belt widths of 76cm, 137cm and 198cm.

All can be configured as new or retrofitted with additional heating chambers to double or triple curing capacity (belt speed) of screen printed plastisol inks, water-based inks and discharge, DTG pretreatment and printed images, and powdered adhesives of DTF substrates and screen-printed transfers.

Retrofit kits will be available for upgrading existing EconoRed dryers with adjustable exhausts.

Vastex International manufactures a wide range of other conveyor dryers for DTG, DTF and screen printing applications as well as DTF powder shakers, screen printing presses, athletic numbering systems, flash cure units, screen exposing units, screen drying cabinets, screen prepress equipment and washout booths.