Putty & Paste
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- Adhesives & Sealants
- Composites
- Lubrication
- Paint & Coatings
- Process Control
- Polyurethane
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APD (Adhesive Putty Dispensing) System, designed for high-viscosity polyester lightweight putties. 200K-1M centipoises accommodates 55 gallon (200 liter) open-top drum.23:1 ratio chop-check RAM pump. RAM pump seal made of ethylene-propylene rubber for chemical resistance. Air motor control valve controls line pressure, no bursting of glass spheres in filled materials.
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Application Architecture
PU Bonding for Elevator Panel and Cab Assemblies
Executive Overview
Kirkco engineered a polyurethane bonding architecture for elevator panel and cab assemblies where structural integrity, vibration damping, and cosmetic finish are critical to passenger safety and long-term performance. The system was designed to deliver consistent bond lines across dissimilar substrates while supporting repeatable production workflows.
Business & Quality Drivers
Elevator manufacturers face stringent safety standards, aesthetic requirements, and warranty exposure. Manual adhesive application introduced variability in bond thickness and cure behavior, increasing the risk of rework and inconsistent panel performance over the service life of the equipment.
Process Requirements
The application required precise dispensing of one- or two-component polyurethane adhesives with controlled bead geometry and predictable open time. Adhesive placement needed to accommodate metal skins, composite panels, and internal stiffeners without squeeze-out or void formation.
System Architecture
The bonding platform utilizes bulk-fed PU metering equipment configured for stable ratio control and smooth material flow. Dispensing valves are selected to provide clean cutoff and repeatable start-stop behavior, enabling consistent application across panel sizes and configurations.
Controls & Validation
PLC-based controls manage dispense parameters, timing, and interlocks to ensure repeatable adhesive output. Process settings were validated to maintain consistent bond performance across multiple elevator models and production shifts.
Operational Performance
The architecture reduced material waste, improved cosmetic consistency, and stabilized cycle times. Production throughput increased by eliminating manual variability and reducing downstream inspection and rework.