What is Epoxy Dispensing Machine

Contents

1. What is Epoxy Dispensing Machine
2. Why Batteries Need Epoxy Dispensing Machine
3. How an Epoxy Dispensing Machine Works
4. Main Types of Epoxy Dispensing Machines
5. Key Features You Should Care About
6. Common Problems and How to Avoid Them
7. How to Choose the Right Epoxy Dispensing Machine
8. Quick Benefits Summary & Recommendation

What is Epoxy Dispensing Machine

An epoxy dispensing machine is equipment that accurately puts two-component or single-component epoxy onto parts that need sealing, bonding, or potting. In the battery industry, it is most often used to fill gaps, seal battery tops, encapsulate modules, or fix cells inside packs. It makes sure the epoxy goes exactly where it should, in the right amount, every single time.

Why Batteries Need Epoxy Dispensing Machine

Batteries—whether cylindrical, prismatic, or pouch cells—must be protected from moisture, vibration, and heat cycles. Epoxy creates a strong, insulating barrier that stops water ingress and keeps cells from moving inside the pack. Doing this by hand is slow, inconsistent, and wastes a lot of material. A proper epoxy dispensing machine removes human error and meets the tight tolerances required for EV packs, energy storage systems, and consumer electronics batteries.

How an Epoxy Dispensing Machine Works

The machine usually has three main parts: material feeding system, metering and mixing unit, and dispensing nozzle or robot.

1. Two tanks or cartridges hold Part A (resin) and Part B (hardener).
2. Precision pumps (gear pumps, piston pumps, or screw pumps) push exact ratios—often 1:1, 2:1, or 10:1—into a static or dynamic mixer.
3. The mixed epoxy goes through a valve and is applied either by a fixed nozzle (for top sealing) or by a 3-axis/6-axis robot (for complex module potting).
4. Many machines now have vacuum degassing, heating channels, and real-time ratio checking to make sure there are no air bubbles or off-ratio mixes.

Main Types of Epoxy Dispensing Machines

• Benchtop/manual machines – good for lab, small production, or repair.
• Semi-automatic inline machines – operator loads the battery tray, machine does the rest.
• Fully automatic lines with conveyor and vision guidance – used by big pack manufacturers running 50–500 packs per hour.
• Robot + metering platform – most flexible for mixed-model production.

Key Features You Should Care About

Ratio accuracy ±1% or better – off-ratio epoxy never cures properly and ruins the whole battery pack.
Shot size repeatability – critical when you only have 0.2–2 g of epoxy per cell gap.
Vacuum potting option – removes trapped air in deep module potting.
Heated hoses and tanks – high-filled thermal epoxy is very thick at room temperature.
Easy cleaning – some machines use disposable static mixers, others have automatic purge cycles.

Common Problems and How to Avoid Them

Air bubbles → use vacuum feeding or online degassing.
Clogged nozzle → choose self-cleaning valves or disposable tips.
Wrong mixing ratio → pick machines with continuous ratio monitoring sensors.
Epoxy curing too fast → look for machines with cooled material lines or adjustable pot life settings.
Material waste → modern machines can dispense as little as 0.01 ml accurately, almost zero waste.

How to Choose the Right Epoxy Dispensing Machine

1. Know your epoxy type (thermal conductive, flame-retardant, low-viscosity, high-filler).
2. Calculate needed output (grams per minute or packs per hour).
3. Decide automation level (manual load vs full conveyor).
4. Check if you need vision alignment for varying cell layouts.
5. Ask for ratio check records and after-sales support in your region.

Quick Benefits Summary & Recommendation

Using a reliable epoxy dispensing machine gives you consistent quality, lower labor cost, almost zero material waste, and much faster cycle times. In battery production, these points directly translate into higher yield and safer packs.

If you are looking for a proven, industrial-grade solution, take a look at Better-Tech's epoxy dispensing series. They offer benchtop to fully automatic models specially designed for cylindrical, prismatic, and pouch cell potting and top sealing, with excellent ratio accuracy and vacuum options.

⇒ Check the full specifications and request a quote here: https://www.better-tech.net/product/epoxy-dispensing-machine