An air knife is a device that delivers a controlled ‘blade’ of air – blowing moisture, debris or excess coatings off products as they move along a production line conveyor belt. Air knives initially appear very simple.

Air knife coating uses an air jet to blow off excess coating materials and to control coating thickness instead of using a knife blade.

Air Knife design has provided the highest efficiency, lowest turbulence, and unsurpassed uniformity in the industry. Water based dispersion of EVA, waxes, resins and various tacifiers applied by sophisticated air-knife coating technology.

DUMA-BANDZINK galvanizing and aluminizing systems create outstanding coating results due to the characteristics of their Air-Knife Systems. The extremely robust design and finish follows the aim to guarantee a high overall stiffness of the system and minimizing vibrations.

Air Knives are able to perform cleaning, drying and blow-off functions by emitting a powerful and consistent stream of air. This is achieved through the series of slots that each Air Knife has along its “knife edge”. The slots on Air Knives are adjustable.

Air knives remove liquids, control the thickness of liquids, dry the liquid coatings, remove foreign particles, cool product surfaces or create a hold down force to assist in the mechanical bonding of materials to the surface.

Air Knife Coater for speeds up to 500mpm. This method is popular for top coating of board after a Metering Bar or Flexrod Coater. This coater works well for low solids, low viscosity coatings. More accurate coating application can be achieved with the use of multiple roll applicators.

Republic Air Knife Systems use a high velocity air stream to remove liquid, dust, and debris from products prior to labeling, ink jet laser coating, packaging, or other secondary operations. Our air knife systems are available in extruded aluminum or stainless steel with lengths from 2” to 196” with an adjustable gap for better air stream ...

The air-knife pressure is a principal determinant of coat weight. However, web speed, coating physical properties and air-stream angle are also significant factors in weight control. The air-knife coating operation, which is capable of applying coat weights over a wide range, is generally limited to a maximum speed of 1,000

OXYTECH SYSTEMS™ Heated Air Knives are blower driven and designed to give maximum efficiency for high velocity air drying of inks, coatings and, blow off applications. Our systems feature a continuous, uninterrupted air slot for uniform air coverage over the projected area.