Оптимизация температуры нагрева заготовки

Tue, 09 Jun 2026 02:52:35 +0800

A blow molder can be humming along at full speed and still eat away at your margins if the preform heating isn’t dialed in. You know the signs—off-spec bottles with thin walls, stress lines, or necks that feel weak, plus a scrap pile that shouldn’t be that big. Most of the time, the culprit is inconsistent preform temperature, and the place to fix it is right there in the heating tunnel.

What matters, technically

With PET preforms, infrared heating comes down to matching emitter output to how the material absorbs energy. We lean on short-wave quartz halogen emitters with a peak around 0.9–1.2 μm, chosen to surface-heat the preform quickly and evenly without cooking the core. Power density is set to the line speed and preform wall thickness—typically 30–50 W/cm² across the tunnel zones. Geometry matters just as much. You want R7s connectors, 33 mm or 38 mm tube diameters, and standard mounting lengths so the lamps drop straight into the heating modules on Sidel, Krones, SIPA, Husky, SACMI, and Nissei ASB machines. Set the filament geometry so the radiant field covers the shoulder and body uniformly. That’s how you avoid hot spots and cold bands.

Оптимизация on Gentle Glow Warm IR Heaters

Оптимизация температуры нагрева заготовки

What matters, technically