PCB Moisture-Curable Elastic Adhesive Dispensing for Waterproof & Anti-Static Protection | Second Intelligent
In the electronics industry, ensuring the long-term reliability of PCB assemblies requires more than soldering quality—it also depends on waterproofing, moisture protection, vibration resistance, and anti-static insulation.
A client approached Second Intelligent seeking a fully automated solution to dispense Single-Component, Moisture-Curable, Elastic Adhesive (White) on their PCB boards to enhance environmental protection and component robustness.
Their adhesive was supplied in a 310ml cartridge, commonly used for RTV-type moisture-curing elastomers with medium-to-high viscosity.
1.Customer Background & Requirements
The client manufactures LED lighting modules and electronic control boards. Their PCB contains multiple sensitive components—LEDs, sensors, ICs, connectors—and requires precise bead and dot dispensing to achieve full protective coverage.
Customer Pain Points
Components closely spaced → manual dispensing machine easily contaminates solder pads
Moisture-curable elastic adhesive → medium/high viscosity, difficult to control manually
Needs uniform glue coverage for waterproofing and anti-static protection
Inconsistent manual output → unstable product quality, high rework rate
Large production volume → efficiency too low with hand dispensing
Adhesive Specification
Type: Single-Component, Moisture-Curable, Elastic Adhesive (White)
Features: Waterproof, moisture-proof, anti-static, vibration-resistant
Packaging: 310ml cartridge
Curing: Room-temperature moisture curing
Function: Environmental sealing + mechanical reinforcement
Typical Application Areas
● LED lamp bead waterproof sealing
● IC and sensor edge sealing
● Component foot reinforcement and insulation
● Moisture barrier for exposed solder joints
● Anti-static isolation coating in sensitive areas
2. Second Intelligent’s Customized Dispensing Solution
Based on the adhesive type and PCB structure, Second Intelligent designed a professional solution tailored for waterproofing & moisture-curable adhesive dispensing machine.
2.Process Engineering
The customer’s dispensing requirements were focused on waterproof integrity + insulation + consistent glue height, so our engineers created a dedicated process plan.
✔ Step 1: Custom Positioning Fixture
Ensures perfect alignment for every PCB panel.
✔ Step 2: Sealing/Bead Path Programming
Engineers programmed:
Waterproof perimeter beads
Component-edge sealing
Dot reinforcement on critical components
Tight-curve trajectory for irregular boards
✔ Step 3: Flow Control Matching Adhesive Behavior
Moisture-curable elastic adhesive has high thixotropy—our engineers calibrated:
Pressure
Rotation speed
Needle height to ensure smooth bead formation.
✔ Step 4: First-Article Verification
Adjusting bead width, thickness, and curing behavior.
✔ Step 5: Full Production Run
Stable output day after day.
Overall result: improved environmental protection + higher reliability + lower production cost.
5.Why Customers Trust Second Intelligent
① Deep Expertise in Moisture-Curable & Elastic Adhesive Dispensing
We understand the flow behavior, curing characteristics, and valve compatibility of RTV & elastic sealants.
② Precision Control for Waterproof Sealing Applications
We specialize in:
Perimeter waterproof beads
IC sealing
Component reinforcement
Moisture barrier dispensing
③ One-Stop Service
From fixture design → path programming → sample testing → mass-production tuning.
④ Trusted by Global Electronics Manufacturers
LED, automotive electronics, sensors, smart appliances, energy systems.
6.Suitable Application Industries
This solution is ideal for:
Automotive lighting modules
Sensor modules
Consumer electronics
PCB control boards
Smart home devices
Medical electronics
Waterproof LED and optical modules
7.Need Waterproof, Moisture-Cure Adhesive Dispensing?
We can provide:
✔ Free sample testing
✔ Adhesive dispensing process development
✔ Full equipment configuration
✔ 310ml cartridge dispensing solution
✔ Waterproof sealing process consultation
Contact our engineering team for a customized proposal.
