Two new DTF capable conveyor dryers from Vastex protect shop personnel from ethylene glycol, a toxic synthetic fluid emitted by DTF adhesives as a vapour during the curing process, it was announced by Mark Vasilantone, president. MM-0665_ERVP III-24_20250102_GRAY_RGB_HI  

The two new DTF capable conveyor dryers from Vastex protect shop personnel from ethylene glycol. Photo: Vastex International.

Engineered specifically for DTF curing, in which adhesives off-gas large volumes of glycol, the new dryers draw filtered makeup air through the top-centre of the heating chamber, and through its double-wall top and sides, serving to cool the outer skin and chamber edges for operator safety.

Preheated make-up air flows into the heat chamber, replacing the exhausted air being drawn out along each side of the belt, while preventing an inrush of air from the infeed and exit of the dryer that would otherwise disturb lighter materials. The volume of air entering the chamber is also adjustable, allowing the operator to fine-tune the air flow.

A washable mist separator removes glycol from the contaminated vapour, collecting its condensate in a removable receptacle. An optional Make-Up Air Heater is available to decrease the chance of make-up air cooling the product.

Air is drawn through the dryer by an exhaust fan located at the downstream end of the system to minimise exposure to heat and vapour contamination. A collar at the fan's outlet allows connection of the user's exhaust ductwork to the shop's exterior.

Models

Two models are offered, both with 61 cm wide, variable speed conveyor belts:  model ERVP-III-24 with 10,800 watts, and model ERVP-VI-24 with 15,600 watts for higher belt speeds (capacity).

“DTF printers must take caution that curing adhesive powders releases toxic vapours," he says, adding, "These Vastex DTF-specific dryers employ advanced air mapping to reduce exposure to these fumes and collect glycol condensate, protecting the operating staff as well as the dryer's heating elements.”

 

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