Module
9-2
Part 1079832_04
E 2015 Nordson Corporation
Module Overview
Dispensing modules apply adhesive to a product. A Speed‐Coat control
module is air‐actuated, meaning that an air supply controlled by a solenoid
valve is required to operate the module. To supply adhesive to the nozzle,
pressurized air (module‐actuating air) lowers the nozzle stem, allowing
adhesive to flow through the nozzle onto the product. To stop the flow of
adhesive, the pressurized air is removed and the nozzle stem moves
upward, pulling the adhesive back into the module and ensuring clean cutoff.
A separate air supply is used to supply pattern air to the module; this air
enters the pattern air inlet on the applicator body and is directed onto the
adhesive exiting the nozzle, creating the desired spray pattern.
Figure 9‐2 shows the flow of adhesive and air through a Speed‐Coat control
module. Figure9‐3 shows the key parts of a Universal Speed‐Coat module.
Actuation
air inlet
Adhesive
inlet
Air exhaust
Adhesive
outlet
Figure 9-2 Flow of adhesive and air through a Speed-Coat control module
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