High quality vs cheap IR lamp

Thu, 23 Jul 2026 13:24:34 +0800

Dealing with Heat Issues in KHS Blow Molding

Ever deal with PET bottles that just aren’t coming out right? You see uneven walls or, worse, the bottles just collapse. Usually, it’s a heating problem. A lot of shops try to save a few bucks by grabbing the cheapest IR lamps they can find. It seems like a smart move until you start seeing “cold spots” or power that jumps all over the place. From what we’ve seen, the real difference between a budget tube and a precision lamp is all in the details—things like how centered the filament is and how pure the quartz actually is. Why “more power” isn’t the answer Getting a uniform heat isn’t about cranking up the wattage. It’s about how that heat spreads across the length of the tube. Cheap lamps often have filaments that sag or aren’t wound tightly. That creates hot spots that can actually scorch your preforms. We use tungsten filaments that are centered perfectly. This means the IR radiation hits the PET consistently from one end to the other. When the heat is steady, you can stop fighting with your machine settings just to make up for a bad lamp. It just works. The hardware side of things We use high-purity fused quartz. Why? Because it stops the glass from clouding up too quickly. That keeps the IR transmission strong for thousands of hours. Also, KHS setups are picky about voltage and wattage. If you drop in a lamp with the wrong resistance, your heat output shifts. We make ours as direct replacements, so you don’t have to spend your weekend rewiring the oven. You just swap them and get back to work. One thing to watch out for Here’s the catch: high-density IR lamps put out a ton of energy in a tiny space. While that fixes your uniformity, it puts a lot more pressure on your oven’s cooling fans. You can’t ignore the airflow. If your vents are clogged with dust, even the best lamp in the world will overheat the quartz and burn out early. Keep your blow-room cool. Your lamps will last longer, and your life will be a lot easier.

Vs on Mega Infrared Heating

High quality vs cheap IR lamp

Dealing with Heat Issues in KHS Blow Molding