A pump for hot melt adhesive, also widely known as a hot melt gear metering pump, is a positive-displacement volumetric pump built specifically to handle molten hot glue, EVA, polyolefin, PUR and other thermoplastic adhesives. Unlike conventional gear pumps for plastic extrusion, this hot melt pump is optimized for medium-low viscosity adhesive melt, steady dosing and accurate flow control in coating, laminating, slot die coating, labeling and packaging sealing lines.
Hot melt adhesive changes viscosity as temperature shifts. Without precise metering, uneven glue output causes thin coating, glue streaks, over-gluing, weak bonding and high adhesive waste. Standard screw feeding or simple pressure-driven delivery cannot maintain uniform flow when raw material batches or working temperatures fluctuate. That is why many adhesive converters install a dedicated pump for hot melt adhesive after the melter and before the coating die or dispensing nozzle.
This hot melt adhesive pump rotates at a controlled speed to deliver a fixed volume of molten adhesive per revolution. Flow rate directly correlates with rotation speed, separating output stability from upstream pressure variation. Even when adhesive viscosity drifts slightly, the volumetric design keeps coating weight consistent across the web. It supports continuous coating, intermittent dispensing and bead extrusion for different hot melt processes.
The pump body and gears use wear-resistant alloy steel with fine surface treatment. Internal clearances are precisely controlled to reduce adhesive backflow. Integrated electric heating channels and thermal sensors maintain uniform temperature across the pump chamber, preventing adhesive cooling, solidification, charring and carbon buildup inside the pump. It works safely within the common hot melt operating range of 120°C to 220°C, matching EVA, PO, APAO and low-temperature PUR adhesives.
Typical application scenarios for the pump for hot melt adhesive include flexible packaging laminating, label coating, hygiene nonwoven, mattress glue spraying, book binding, carton sealing and wood edge banding. It pairs well with hot melt tanks, melters, slot dies, coating heads and automatic dispensing systems. It can be fitted to new production lines or retrofitted onto existing hot melt coating equipment.
Manufacturers gain clear benefits: consistent coating weight, less adhesive consumption, fewer defective products, stable bond strength and simpler quality control. It also reduces stress on the upstream melter and extends the service life of downstream nozzles and dies.
We supply different displacement sizes of hot melt adhesive pumps with complete servo drive assemblies, adapter flanges and technical support. All units support customized flow requirements for adhesive coating lines worldwide.
If you run hot melt coating or glue dispensing lines and struggle with uneven glue application, upgrading to a professional pump for hot melt adhesive is a reliable way to stabilize production and cut adhesive waste.
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071
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TEL：+86 371 67991755
WhatsApp： +86 158 38331071
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