PUR (polyurethane reactive) hot melt adhesives are rapidly replacing conventional hot melts in woodworking, packaging, electronics, and automotive assembly—but they demand more from the delivery hose. Running at higher temperatures and extremely sensitive to fluctuation, PUR requires heated hoses with precise ±1–2°C end-to-end control, non-stick PTFE inner tubes, fast heat-up, and properly rated fittings. This article explains what makes PUR harder on hoses, what a PUR-ready hose needs, and why upgrading adhesive means upgrading your hose. We offer customizable electrically heated hoses and temperature controllers—share your adhesive datasheet for a tailored recommendation.
This buyer's guide explains how to specify a JINGCHENG electrically heated hose so a quotation matches the machine on the first try. It decodes the model code (for example JCH-200-16-B-3X220-P2-8: temperature, inner diameter, inner tube material, voltage, sensor and pressure), then walks through the eight build-to-order parameters on the catalog order form: rated voltage, temperature sensor (J/K thermocouple, Ni120, PT100, PT1000), length, inner diameter, working pressure, rated power, end fittings and wiring. Worked examples cover hot melt adhesive, gas sampling lines up to 230°C and extruder hoses up to 250°C, followed by installation tips and an RFQ checklist.