650mm1500w halogen infrared heat lamps for bottle blowing

May 4, 2026

Introduction

We built this 650mm, 1500W halogen infrared heat lamp for one reason: PET bottle blowing. This isn’t a general-purpose heater you throw at a bunch of different jobs. It’s built to put intense, focused heat right where it matters—on the preform. The point is simple: get the material up to the glass transition temperature fast, evenly, so it stretches the way you want. No scorching. No thin spots. Just predictable results.

Power, Voltage, and Geometry—Why It Works

The 1500W rating at standard line voltage gives you heat output you can count on, so you can match it to your cycle times and the wall thickness of your preforms. And the 650mm length? That’s chosen to cover the whole preform in many blow-molding setups, creating a heating zone that stays consistent—no hot spots at the ends, no cold shoulders. The length-to-power balance is the sweet spot: enough energy density to heat quickly, but balanced so the center doesn’t get overdriven while the ends lag behind.

Inside the Lamp: Halogen, Quartz, and the R7s Fit

The halogen element runs hotter than a conventional wire element, and that gives you shortwave infrared that penetrates PET efficiently. The quartz envelope handles the shock of rapid on/off cycling without cracking under thermal stress. And the halogen cycle keeps the filament stable over time, so you don’t get the burn-out that comes from repeated heat stress. The R7s connector is straightforward—industrial, secure, and easy to wire. It holds steady under vibration and carries the full current without an excess voltage drop. That means the lamp drops right into existing fixtures with minimal hassle.

What It Feels Like on the Line

On a PET blow-molding line, the preform has to hit the right temperature profile along its entire length. This lamp throws directional infrared heat straight at the preform, so you’re not wasting energy heating the air. That lets you keep the heating zone tight. Warm-up is faster. Control is tighter. And you get fewer scrapped parts from uneven stretch. Now, here’s the trade-off: high-intensity infrared means the lamp runs hot. So your machine needs solid airflow and enough clearance to keep nearby components from overheating. When you plan the fixture, make room for heat shielding and make sure service access stays safe. We built this lamp to handle real-world beatings—fast cycles, frequent starts, and rough shop conditions. If you need a heat source that keeps pace with modern blow-molding cells, this is the no-fuss, spec-driven answer.