Select Coat-SC-350-SC-300-NordsonASYMTEK.pdf - 第2页

Page 2 of 4 SC - 350 Select Sp ray Specificati ons Applicator Pa rameter SC - 350 Select Spra y Mode Select Spray Typical P attern W idth 4 to 11 mm (0 .16 to 0.45 in.) Fluid V iscosity 30 to 3500+ mPa· s (30 - 3500+ cP …

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Select Coat
®
Applicator Series
SC-350 Select Spray and SC-300 Multi-Mode
The Select Coat
®
Applicator Series– which includes
the SC-350 Select Spray and the SC-300 Multi-
Mode – is a highly-versatile conformal coating
applicator that supports a wide range of high-
viscosity coating fluids from 30 to 3500 mPa-sec (30
to 3500 centipoise). Delivering uniform thicknesses
and consistent pattern widths, it can be configured
to meet a variety of application requirements
including spot, line, area-coat, and optimized
atomization. The high flow rate produces film
builds quickly, and the air and fluid chamber are co-
located to ensure rapid response to changes during
operation – no long air-lines to delay applicator
response. Minimal wetted parts, smooth internal
surfaces, and exposed splines make it easy to clean
and maintain, and it does not require special
adjustment during re-assembly – enabling repeatable
applicator response time.
EasyCoat
®
6 software executes routines and
validation steps to define the optimal start and stop
positions for the applicator throughout production.
The SC-350 Select Spray is available in a Core and
Prime fluid system configuration and offers
additional flexibility within process parameters at
the low and high end of the viscosity spectrum
exclusively for atomized spray. It efficiently sprays
solvent-based fluids while reducing solvent usage
and the “cobwebbing effect” that occurs when
coating fluids cure in-air. In the higher viscosity
range, the applicator provides uniform pass
coverage at faster speeds.
The SC-300 Multi-Mode is versatile and offers
several modes of operation. It is also available in a
Core or Prime fluid system configuration. The Core
SC-300 fluid system includes one nozzle, one 1-
gallon fluid reservoir, one dual-mode applicator, and
two manual pressure regulators with gauges. The
Prime SC-300 fluid system includes your choice of
three nozzles, two fluid reservoirs of either 1- or 5-
gallon capacity, and includes one tri-mode
applicator and one fluid filter. Fluid pressure is
controlled electronically through EasyCoat
®
6
software.
The Select Coat
®
Applicator Series is intended for
use with the Select Coat
®
SL-940
conformal coating system.
Features and Benefits
The Select Coat
®
Applicator Series:
o Supports a wide range of conformal coating
fluids and is ideal for solvent or solvent-less
formulations
o Features fast system on/off times to optimize
start and stop movements
o The optional Four-Position Tilt accessory and
Dual-Simultaneous configuration deliver
improved throughput and reduced process
time
The SC-350 Select Spray is specifically optimized to
atomize coating fluids – delivering exceptional edge
definition and thin, uniform coating thicknesses at
increased speeds
The versatile SC-300 Multi-Mode offers bead,
monofilament, and swirl modes – all in a single applicator
SC-350
Select Spray
SC-300
Multi-Mode
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SC-350 Select Spray Specifications
Applicator Parameter
SC-350 Select Spray
Mode
Select Spray
Typical Pattern Width
4 to 11 mm
(0.16 to 0.45 in.)
Fluid Viscosity
30 to 3500+ mPa·s
(30-3500+ cPs)
Typical Application Thickness
13 to 75 µm
(0.50 to 3 mils)
Edge Tolerance
± 1.0 mm (0.040 in.)
Transfer Efficiency
95-99%
Coating Velocity
127 to 381 mm/sec
(5 to 15 in./sec)
NOTE: This chart is for comparison purposes. Film thickness, edge
tolerance, and coating velocity are dependent on the type of fluid.
Application requirements and fluid properties affect results.
SC-350 Select Spray – Optimized to Atomize High-Viscosity Coating Fluids
With the SC-350, the air assist function is optimized to deliver significant edge tolerance, fluid viscosity, and coating
velocity improvements.
The SC-350 applies less air pressure to achieve a tighter edge tolerance providing increased selectivity and control
near keep out zones and reduced “cobwebbing” of solvent-based fluids. Lower air assist pressure improvements
provide added flexibility within your process parameters – achieving thinner coating results at faster coating speeds
for a wide range of fluid viscosities.
SC-350 Select Spray
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SC-300 Multi-Mode Specifications
Applicator Parameter
Bead Mode
Monofilament Mode
Typical Fluid Dispense Pressure
7.0-413 kPa
(1.0-60 psi)
7.0-413 kPa
(1.0-60 psi)
(10-25 psi)
Air Pressure
No air
Low
Pattern Width
2.5 to 6.4 mm
(0.10 to 0.25 in.)
6.4 to 13 mm
(0.25 to 0.50 in.)
Fluid Viscosity
30 to 3500+ mPa·s
(30-3500+ cPs)
30 to 3500+ mPa·s
(30-3500+ cPs)
(30-3500+ cPs)
Application Thickness
125 to 500 µm
(5 to 20 mils)
100 to 300 µm
(4 to 12 mils)
(0.50 to 3 mils)
Edge Tolerance
± 0.75 mm (0.030
in.)
± 1.0 mm (0.040
in.)
± 2.0 mm (0.080 in.)
Transfer Efficiency
100%
Up to 100%
Coating Velocity
254 to 508 mm/sec
(10 to 20 in./sec)
127 to 254 mm/sec
(5 to 10 in./sec)
(5 to 15 in./sec)
NOTE: This chart is for comparison purposes. Film thickness, edge tolerance, and coating velocity are
dependent on the type of fluid. Application requirements and fluid properties affect results.
SC-300 Multi-Mode – Three Modes of Operation
Bead: A stream of fluid is applied to the circuit board in areas where components are very close to non-coating or
keep-out areas, or extra fluid is required for protection of high-impedance areas. The bead may also be used as a spot
command for single coating of a single test point or component.
Monofilament: This pattern is created by controlling the fluid pressure and fluid flow passing through the nozzle.
Auxiliary air circulating through the air passage strikes the fluid at a precise angle, causing it to spin on its axis and
form a conical, looping pattern. The monofilament pattern is ideal for dispensing broad pattern widths, while
maintaining good edge definition, resulting in faster cycle times.
Swirl: The swirl pattern is achieved by increasing air pressure and lowering flow settings. Angled jets impinge air upon
the pressurized fluid exiting the nozzle creating a conical, swirling pattern. The swirling action helps maintain pattern
shape resulting in excellent width control. Because the air jets cause slight atomization of the fluid, extremely thin film
builds are possible. The mode is ideal for applications where moderate selective coating and thin film builds are
required.
Bead
Swirl
Monofilament