Hot Melt Adhesive Machine

A hot melt adhesive machine melts solid thermoplastic adhesive, holds it at a set temperature and delivers it under pressure to one or more application points. It is the core of any automated bonding process: everything downstream — bead quality, adhesive consumption, uptime — is decided by how well the machine is specified.

BIT Hotmelt Technology supplies, integrates and services these systems. Since 1982 we have configured them for packaging lines, furniture production, filter manufacturing and dozens of other processes, and we keep them running afterwards.

What a Hot Melt Adhesive Machine Consists Of

Four parts, each of which can be specified independently:

The melter. A heated tank, grid or drum unit that brings adhesive to application temperature and keeps a working reserve available.

The pump. Gear or piston, driven pneumatically or electrically, moving adhesive into the hose circuit at controlled pressure.

Heated hoses. Insulated, temperature-controlled lines that carry the adhesive to the application point without cooling or charring it.

Applicators. Guns, heads, modules and nozzles that dose the adhesive in the pattern you need, triggered by the line.

A hot melt adhesive machine is only as good as the weakest of these four. A high-capacity melter behind an undersized pump, or a precise applicator on an unstable hose temperature, will not give you a consistent bond.

Types of Melter

Tank units hold a few litres to tens of litres in a heated reservoir. Most hot melt adhesive machines are built around one, and they cover the majority of applications: packaging, assembly and labelling with steady consumption.

Grid melters melt on demand and drop the adhesive into a small reservoir. Because far less adhesive sits at temperature, they matter when degradation or charring is a problem, or when production runs intermittently.

Drum and bulk melters draw straight from 20 to 200 litre drums. They make sense once manual refilling has become a job in itself.

PUR units are sealed against moisture and used exclusively for reactive polyurethane adhesives. They cannot share a circuit with standard hotmelt.

Applicators and Nozzles

The applicator determines the pattern, and the pattern determines both bond quality and cost per product.

• Bead application for continuous lines of adhesive, the standard in carton sealing
• Dot application for intermittent, precisely placed spots
• Slot and spray heads for wide, even coverage on laminating and textile work
• Swirl nozzles for a controlled spiral pattern that covers a wide area with little adhesive

Changing to the right nozzle is often the cheapest fix available: it can cut adhesive consumption noticeably without touching the rest of the installation.

How to Specify the Right Machine

Melt rate. Ask for kilograms per hour and compare it with your peak consumption, not the average. Tank volume alone tells you nothing about whether the machine can keep up.

Number of outlets. Specify a spare hose outlet now. Adding an application point to a full machine later means a new machine.

Temperature zones. Independent control of tank, hose and head keeps viscosity stable across the whole circuit.

Adhesive type. Standard EVA, low-temperature grades and reactive PUR each place different demands on the equipment. The adhesive should be chosen with the machine, not after it.

Control and integration. Line-speed compensation, pattern timing, level monitoring and fault alarms decide how much operator attention the machine needs day to day.

Service and parts. Response time on a breakdown and availability of seals, filters, nozzles and heating elements matter more over a machine’s life than the purchase price does.

Test Before You Specify

Datasheets do not tell you how your material behaves. In our test centre we run your product with your adhesive on a production machine, so you see the bead, the bond and the consumption before anything is ordered. Most open questions about nozzle choice, temperature and adhesive grade are settled in a single session.

Installation, Maintenance and Service

We deliver every hot melt adhesive machine ready to integrate, and we stay involved afterwards: preventive maintenance, repairs in our own workshop, service on site, and spare parts for units, hoses, heads and nozzles — including for most machines already installed by others.

Discuss Your Application

Tell us what you are bonding, at what line speed and with which adhesive, and we will specify the hot melt adhesive machine that fits. Call +31 (0)348 563 839 or use the contact form to arrange advice or a test.