If you run plastic extrusion lines for PP, PE or PET, unstable melt flow, pressure pulsation and fast component wear are common headaches that lead to inconsistent product thickness, high scrap rates and frequent downtime. Our custom wear resistant melt pump is a positive displacement gear metering pump engineered to solve these pain points perfectly, with a wide displacement range from **0.6cc/r up to 12000cc/r** to match lab-scale testing, small production and large-capacity extrusion systems.

Installed between the extruder and die head, this extrusion melt gear pump separates upstream screw pressure fluctuation and delivers stable, volumetrically accurate polymer melt to the die. Unlike relying only on the extruder for metering, it maintains steady outlet pressure and linear flow output, greatly improving dimensional consistency of finished plastic products such as PET strapping bands, PP cast film, PE sheet, recycled PET pellets and modified compounding materials.

Key Advantages of Our Wear Resistant Melt Gear Pump

1. Wide Displacement Coverage: 0.6–12000cc/r

Covers micro-metering for fiber and thin film up to large-flow metering for heavy sheet, board and high-output granulation lines. Custom displacement, flange connection, driving mode and heating layout are supported according to your line layout.

2. Enhanced Wear Resistance for Filled & Recycled Polymers

Core gears, bearings and pump body adopt nitrided steel or high-speed tool steel with special hardening treatment. It performs reliably when processing filled PP, reclaimed PE and recycled PET that contain abrasive fillers, cutting replacement frequency and lowering your maintenance cost.

3. Stable Metering & Pressure Control

Precision gear profile minimizes flow pulsation. It stabilizes die pressure, reduces thickness deviation, lowers scrap rate and helps you run tighter tolerance products. Meanwhile, it reduces backpressure load on the extruder screw, saving energy and extending extruder service life.

4. Compatible with PP, PE, PET and More Thermoplastics

Suitable for virgin and recycled PP, LDPE, HDPE, LLDPE, PET, and other medium & high viscosity polymer processing. Widely used in film extrusion, sheet extrusion, PET strap production, plastic granulation, coating and compounding lines.

Customizable Structure & Sealing Options

We tailor sealing solutions (spiral seal, mechanical seal, combined seal), electric heating/cooling channels, inlet & outlet flange standards, and surface treatment to fit your working temperature, pressure and viscosity conditions. Max working temperature up to 400℃, max discharge pressure up to 40MPa available for heavy-duty extrusion tasks.

Typical Applications

PET strapping band, PET sheet and recycled PET pellet extrusion

PP cast film, PP sheet, PP non-woven and modified PP compounding

PE film, HDPE sheet, PE pipe and PE recycling granulation

BOPP, coating extrusion, chemical fiber spinning and lab extrusion testing

Technical Overview

Displacement: 0.6 ~ 12000 cc/rev

Process materials: PP, PE, PET and other thermoplastics

Type: Wear-resistant polymer gear melt pump, positive displacement metering

Custom: Material grade, sealing, heating, connection size, mounting structure

Service: OEM, ODM, technical drawing support, on-site installation guidance

For plastic processors targeting stable extrusion quality and lower operating cost, this custom wear resistant melt pump is a core upgrade for your PP, PE and PET production lines. Send us your melt viscosity, throughput, working pressure and drawing requirements, and we will provide a matched melt pump solution with quotation.