Certified Dispensing Equipment
Dispensing Methodology Selection Guide | 1.2 MB PDF
The proper dispensing method and equipment is critical to the success of Clearweld's process implementation. Clearweld coatings are specifically designed to optimize the performance of each of these methods.
Clearweld certifies its dispensing partners to ensure that their dispensing equipment for coatings meets application performance requirements. These partners have the expertise and support capabilities to service our customers. In addition, we will assist you in selecting the appropriate dispensing method for your plastics application.
Dispensing Methods for Use with Clearweld Materials
|Dispense ||Principle of Operation ||Main Advantages ||Limitations
|• Pneumatic valve, with needle tip attached to its outlet orifice, controls the flow of liquid.
||• Technology is well known.
• Relatively inexpensive.
• Provides latitude if a part is slightly bowed in X- or-Y-Axis.
|• Difficult to control on perfectly flat surfaces.
• Variations in Z-axis can create problems.
|• Pneumatic pressure is used to force fluid through a miniature valve that opens and closes at a very high rate.
||• Precise volume control.
• Precise location of depositions.
• Very small volumes can be dispensed accurately.
|• Line width is relatively narrow (1-3mm) unless multiple valves are used.
• Price can vary from relatively inexpensive to very expensive, depending on the precisions of the system.
|• Liquid is fed through an air cap attached to a pneumatic valve to create a spray mist.
||• Can cover a large area.
• Masking may be required.
• Small line size is difficult to achieve.
|• Piezoelectric device atomizes a liquid as it flows through a dispense nozzle to create a fine mist.
||• A wide variety of deposition widths are possible.
• Low maintenance nozzles, no moving parts.
• Low velocity, impingement and overspray are minimal.
|• More expensive than standard spray techniques.