Encapsulation and potting are essential processes in the manufacturing of electrical, electronic, and high-performance industrial components. These processes protect sensitive parts — such as transformers, sensors, coils, and circuit boards — from moisture, vibration, contaminants, and electrical stress.
At Kirkco, we’ve engineered precision metering, mixing, and dispensing systems for epoxy, urethane, silicone, and other specialty resins for nearly 30 years. Our solutions range from manual encapsulation stations to fully automated vacuum potting cells, all designed to deliver repeatable, high-quality, and void-free encapsulation.
Encapsulation — also called potting or casting — involves filling or coating a component with a liquid resin that cures into a solid protective layer. This hardened material:
Seals components from moisture, dust, and chemical exposure
Improves mechanical strength
Provides electrical insulation and dielectric integrity
Reduces stress from shock and vibration
To achieve reliable protection, the encapsulating resin must be metered, mixed, and dispensed precisely, and air entrainment must be minimized to prevent voids that compromise performance.
Electrical and electronic assemblies present unique potting challenges:
Air inclusions and voids weaken insulation and reduce reliability
Heavy, abrasive resins wear equipment quickly if not engineered for it
Complex geometries trap air and resist complete filling
Large pour volumes require continuous, stable feed systems
Two-component chemistries must be mixed uniformly for proper cure
Kirkco solutions are designed to overcome these challenges while improving throughput and consistency.
Kirkco Corporation engineered and delivered a precision polyurethane encapsulation system for a global automotive electronics manufacturer requiring repeatable, high-integrity protection of sensitive electronic modules. The solution was architected to meet stringent quality, reliability, and throughput requirements while remaining flexible for future product variants.
The customer required a controlled two-component polyurethane dispensing process to protect electronic modules used in vehicle security and fleet management systems. Key drivers included resistance to water ingress, long-term environmental durability, dimensional consistency, and protection of proprietary electronics.
The encapsulation platform is based on a gear-pump-driven two-component metering and mixing system capable of processing low- to medium-viscosity polyurethanes. The system supports volumetric mix ratios from 100:100 to 100:10 and continuous or shot-based dispensing up to 1.2 liters per minute.
Independently driven metering pumps are governed by a PLC-based control architecture, enabling precise ratio control and output stability. Integrated pressure-fed supply containers ensure consistent material delivery and minimize process variability.
Post-installation capability studies confirmed process stability with a demonstrated CPk of 3.52. In production, the system has processed more than 40,000 electronic modules with a documented zero PPM defect rate.
To support multiple product configurations, the system incorporates a selective shot-switching function, allowing rapid changeover between encapsulation programs without extended setup time or recalibration.
Kirkco provided full system commissioning, operator training, and post-installation support. The solution was delivered and commissioned on an accelerated schedule, aligning with the customer’s production ramp timeline.
For manufacturers evaluating polyurethane encapsulation, potting, or sealing processes, Kirkco offers confidential engineering consultations under NDA. Our team will assess material chemistry, throughput requirements, automation level, and lifecycle cost to architect a system aligned to your production goals.
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Kirkco developed a robotic silicone sealing architecture to deliver uniform, weather-resistant sealing for LED lighting assemblies in outdoor environments.
Manufacturers required consistent bead geometry, reduced rework, and improved environmental sealing versus manual cartridge application.
Continuous bead application synchronized to part geometry with stable flow and pressure control.
Bulk-fed silicone delivery paired with six-axis robotic motion and precision dispensing valves.
Closed-loop flow control and robot path validation ensure repeatable sealing performance.
Architecture supports additional part sizes, recipes, and automation expansion.
Kirkco supports robotic sealing and lighting assembly automation under NDA.
Kirkco engineered an automated epoxy encapsulation architecture for a European manufacturer of high‑reliability connectors used in mission‑critical medical, military, instrumentation, and broadcast applications. The solution replaced a legacy polyurethane process with a higher‑viscosity, environmentally improved epoxy system while increasing consistency, quality, and automation throughput.
The customer required vacuum‑sealed and IP68‑rated connectors where performance integrity is non‑negotiable. Failure risk directly impacts safety‑critical systems, driving the need for precise volumetric control, repeatable shot accuracy, and controlled material conditioning.
The application required six discrete metered shot sizes ranging from approximately 0.07 ml to 0.8 ml. Multiple precision fixtures were integrated to hold connector variants while a three‑axis robotic system positioned the dispensing valve and static mixer for fully automated filling.
The encapsulant was transitioned from a lower‑viscosity polyurethane to a two‑component epoxy resin with a mix ratio of approximately 100:90. Although more environmentally favorable, the epoxy introduced significantly higher viscosity and tighter thermal stability requirements.
The dispensing platform is based on a precision micro‑metering and mixing system configured for epoxy processing. To maintain process stability, the complete material path is temperature‑controlled, maintaining resin temperature between 50°C and 60°C throughout metering, mixing, and dispensing.
The system integrates robotic motion control with synchronized metering, valve actuation, and shot selection logic. This architecture enables rapid program changes across connector variants without mechanical reconfiguration.
The upgraded encapsulation architecture delivered measurable improvements in product quality, shot‑to‑shot consistency, and process repeatability while simultaneously supporting environmental objectives through material selection and waste reduction.
Kirkco supported system validation through factory trials, application tuning, and commissioning. Ongoing support includes process optimization, material change evaluation, and automation scalability.
Manufacturers evaluating epoxy or polyurethane encapsulation for high‑reliability electronics can engage Kirkco under NDA for confidential process review. Our engineering team evaluates material chemistry, viscosity management, automation strategy, and quality risk to architect a production‑ready solution.
Kirkco engineered a precision encapsulation architecture to elevate quality, reliability, and repeatability in applications where electronic and electromechanical components must be protected against environmental and operational stressors. The architecture transformed encapsulation from a manual, variable process into a controlled, production-grade operation aligned with long-term performance objectives.
Manufacturers of high-value components face increasing pressure to reduce scrap, minimize warranty exposure, and ensure consistent field performance. Variability in manual encapsulation introduced quality risk through inconsistent fill levels, trapped air, and cure variation. A robust encapsulation architecture was required to stabilize quality across operators, shifts, and product variants.
The application required controlled dispensing of two-component encapsulation materials with precise ratio management, stable material temperature, defined shot volumes, and void-free delivery. Flexibility to support multiple part geometries and encapsulation programs was essential without increasing changeover time or operator complexity.
The encapsulation platform is based on precision metering and mixing equipment configured for epoxy chemistry. The complete material path is temperature-conditioned to maintain viscosity stability and dosing accuracy. Point-of-application mixing minimizes residence time and reduces material waste while ensuring consistent encapsulation quality.
A PLC-based control architecture manages ratio control, recipe storage, automated flushing, and process interlocks to prevent off-ratio or off-temperature dispensing. Defined process windows were validated to ensure repeatable encapsulation performance across production runs and component configurations.
Following implementation, encapsulation quality became uniform and predictable. Scrap and rework were reduced, operator dependency was minimized, and production throughput stabilized. Encapsulation shifted from a quality risk to a controlled and repeatable manufacturing process.
The architecture was designed for long service life with backward-compatible control logic, enabling future material changes, additional recipes, or throughput increases without requiring system replacement. This ensures long-term alignment with evolving product designs.
Kirkco supports manufacturers seeking to improve encapsulation quality through confidential engineering engagement under NDA. Our team architects encapsulation systems around material behavior, production requirements, and long-term reliability goals.
Kirkco engineered an epoxy encapsulation architecture for industrial electronic and control assemblies requiring stable electrical performance, environmental protection, and long-term reliability in demanding operating conditions. The architecture applies proven encapsulation quality principles to ensure consistent results across production programs.
Industrial control manufacturers face reliability expectations driven by uptime requirements and warranty exposure. Variability in manual potting processes introduced risks related to voiding, inconsistent cure, and thermal stress. A controlled encapsulation architecture was required to stabilize quality and reduce lifecycle risk.
The application required two-component epoxy encapsulation with controlled ratio management, stable material temperature, defined shot volumes, and repeatable fill behavior across multiple enclosure geometries.
The encapsulation platform utilizes precision metering and mixing equipment with temperature-conditioned material handling. Point-of-application mixing minimizes residence time and supports void-free encapsulation across varying part sizes.
PLC-based controls manage recipe storage, ratio monitoring, automated flushing, and process interlocks. Defined process windows were validated to ensure consistent encapsulation quality across production runs.
This application is executed within Kirkco’s encapsulation quality framework, which standardizes ratio stability, thermal control, void mitigation, and process validation across encapsulation systems. For a system-level view of how encapsulation quality is engineered across applications, reference: Encapsulating Quality – Application Architecture (Rev C).
The architecture reduced rework, stabilized encapsulation quality, and minimized operator dependency while supporting predictable production throughput.
Designed for long-term service, the system supports future material changes, additional recipes, and throughput increases without architectural redesign.
Kirkco supports industrial electronics manufacturers through confidential engineering engagement under NDA, aligning encapsulation chemistry, equipment architecture, and reliability objectives.
