Hotmelt Technology

Hotmelt technology is the process of melting solid thermoplastic adhesive, keeping it at a stable temperature and applying it exactly where it is needed. The bond forms in seconds as the adhesive cools, which makes it the fastest bonding method available for continuous production. No solvents, no drying time, no curing ovens.

At BIT Hotmelt Technology we have worked with hotmelt technology since 1982. We supply the units, hoses, applicators and control systems, we advise on the configuration, and we keep your hotmelt technology installation running with service on site and in our own workshop.

How Hotmelt Technology Works

A hotmelt technology system is a closed, temperature-controlled circuit with four stages:

1. Melting. Granulate, blocks or pillows are fed into a heated tank and brought to application temperature, typically between 120 °C and 180 °C depending on the adhesive.
2. Pumping. A gear or piston pump moves the molten adhesive under controlled pressure into the hose circuit.
3. Transfer. Heated hoses carry the adhesive to the application point without letting it cool or char.
4. Application. Guns, heads and nozzles dose the adhesive as beads, dots, spray or swirl patterns, triggered by the production line’s own signals.

Every stage is temperature-managed. This is what separates industrial hotmelt technology from a handheld glue gun: viscosity stays constant, dosing stays repeatable, and the adhesive is not degraded by sitting too long at too high a temperature.

Components of a Hotmelt Technology System

• Hotmelt units with melting tanks, pumps and electronic temperature control
• Heated hoses in various lengths and diameters for controlled transfer
• Application heads, guns and modules for contact or non-contact application
• Nozzles, including slot, spray and swirl types, matched to the bead pattern you need
• Automatic filling systems that keep the tank topped up without operator intervention
• Control systems that link adhesive application to line speed and product position

The combination determines your result. The same adhesive applied through a different nozzle at a different temperature behaves like a different product entirely.

Benefits of Hotmelt Technology

Speed. Set times in hotmelt technology are measured in seconds, so bonding never becomes the bottleneck in a high-volume line.

No solvents. Hotmelt adhesives are 100% solids. There is no evaporation, no VOC extraction requirement and no drying tunnel.

Controlled consumption. Precise dosing and patterns such as swirl or dot application use markedly less adhesive than a full-surface bead, which lowers cost per product.

Energy efficiency. Modern hotmelt technology units with insulated tanks, low-temperature adhesives and standby modes consume far less power than older equipment left at full temperature all day.

Versatility. Cardboard, plastic film, foam, textile, wood and metal can all be bonded, often in combination with each other.

Where Hotmelt Technology Is Applied

• Packaging: carton sealing, case erecting, tray forming
• Labelling and end-of-line automation
• Furniture, woodworking and panel assembly
• Filter manufacturing and automotive components
• Mattress, textile and nonwoven production
• Electronics, potting and cable fixing

Across these sectors the principle of hotmelt technology stays the same, but the configuration does not. A carton sealer and a filter line have almost nothing in common in nozzle choice, adhesive grade or control logic.

Choosing the Right Hotmelt Technology Configuration

Four questions decide the specification:

1. Which materials are being bonded, and at what temperature do they run? Heat-sensitive films need low-temperature adhesives and matched hotmelt technology equipment.
2. What is the line speed and the open time you need? This sets pump capacity and application method.
3. How many hours per day does the line run? Continuous operation justifies automatic filling and remote monitoring.
4. What happens when it stops? Service response, spare parts and preventive maintenance are worth more than a lower purchase price.

If you are unsure, test it. In our hotmelt technology test centre we run your materials with your adhesive on our equipment before anything is ordered, so the specification is based on results rather than assumptions.

Hotmelt Technology FAQ

What temperature does hotmelt technology need?
Most industrial grades are applied between 120 °C and 180 °C. Low-temperature adhesives run from around 100 °C and are used for heat-sensitive substrates such as thin films and foams.

How long does a hotmelt technology bond take to set?
Typically one to five seconds, depending on the adhesive, the bead size and the substrate. That open time is a property you select the adhesive for.

Can hotmelt technology be retrofitted to an existing line?
Yes. Hotmelt technology units, hoses and applicators are modular, and applicators can be mounted on existing frames and triggered by the line’s own sensors.

What maintenance does hotmelt technology need?
Regular filter and nozzle cleaning, seal and hose inspection, and periodic checks of the temperature sensors. Planned maintenance prevents the charring and clogging that cause most unplanned downtime.

Talk to a Hotmelt Technology Specialist

Whether you are specifying a new hotmelt technology line, replacing an ageing unit or solving a bonding problem that keeps coming back, we are happy to look at it with you. Call +31 (0)348 563 839 or use the contact form, and we will arrange an appointment or a test.