Precision Liquid-Applied Sound Deadening System

MOLSA OVERVIEW

Multiple-Orifice Linear Streaming Applicators

What is MOLSA and What Does It Do?

What is it?

• Multiple-orifice linear streaming applicator
• Available in widths of 2”, 3”, and 4” (50, 75, 100 mm)
• Orifice sizes available:  0.025”, 0.029”, 0.035”, 0.041” (0.64, 0.74, 0.89, 1.04 mm)

What does it do?

• Deposits films of liquid-applied sound deadener in widths of 2 inches to 8 inches (50 to 200 mm)
• Deposits films of liquid-applied sound deadener in film thickness from 1.5 mm to 4 mm (0.060” to 0.160”)
• Allows manufacturers to apply wider and thicker films of material at a faster rate than previous technology
• Accomplishes the above with little to no over spray
• Reduces costs over mastic pads
• Provides the highest level of durability available in the market
• Is easier to clean and maintain than competitive wide-stream applicators
  
  

MOLSA vs. Other Applicators

Swirl

• Builds films which are higher on the edge than in the middle
• Limited to 2mm film build
• Higher overall cost
• Lower durability
• Slower application

Flat Stream/ Ribbon Coater

• Lower application velocity can affect adhesion to oily metal
• Limited to 2mm film build
• Films are higher on edges than in center
• Width limitations

Airless Spray

• Over spray
• Bounce back
• Inconsistent film thickness
• Tip wear
  
  

System Components

• Bulk feed pumps
• Booster pump (if necessary)
• In-Line strainer or filter
• Electronic Metering system equipped with cartridge regulator and coriolus flow meter
• Dispense valves
• MOLSA head(s)
• Cleaning station

Application Specifications

• Film Thickness: 0.060”       (1.5mm) – 0.160” (4mm)
• Application Speeds:           200 – 1,000 mm/sec
• Pattern Widths:                 2” – 8” (50-200 mm) Single Pass
• Flow Rates:                       1,400 cc/min (0.37 gpm) to 19,500 cc/min (5.15 gpm)
• Standoff Distance:            1” – 4” typical; up to 6” max
• Position:                             MOLSA normal to surface, +/- 15o
• Cleaning:                           After each job, wipe & submerge MOLSA in 1/8” H20

Return on Investment: Justification for Production Plants

Replacing Melt Pads

• Consider more than the cost of the pad itself
• What is the labor required?
• Cost of labor in US is estimated at $75,000 per person
• What is transportation cost of pads?
• Inventory cost associated with pads?
• Floor space cost of pads

Question to Get Started:

Film Thickness

• What is the desired film thickness for the application?
• Customer must supply this information in order to start the process
• Affects applicator orifice size
• Ex: applicators with 0.025” orifice can deposit film thickness up to 3 mm

Robot Speed and Orientation

• What is the maximum robot speed used in the application?
• Typically 300 mm/sec to 600 mm/sec inside of a vehicle
• For applications which are outside of a vehicle, speeds of 1000 mm/sec are possible
• How will the robot apply the material?
• Will material be applied straight downward, or sideways, or upward?
• Need to operate within the process window for all application directions

Single or Dual Applicators

• What is pattern width needed?
• Does pattern need to be interrupted for through-holes?
• What is the application cycle time?
• Each applicator requires a separate electronic fluid metering plate and dispensing valve
• P-Flo XL can control two valves
• P-Flo LT can control only one

Estimated Cycle Times

• Application: total path length / avg. robot speed
• Other considerations
• 2 seconds to wipe applicator after soaking
• 2 seconds to get from home position to first point of application
• 1 second for each reorientation of the head(s)
• 2 seconds to return to home position from final application point
• 3 seconds to clean the applicator between jobs