Air laid Paper
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Kroyer Index:

Karl Kroyer demonstrates his new invention - "Air laid paper".
Karl Kroyer 1964
Karl Kroyer 1964
Airlaid paperAir-laid paper is a textile-like nonwoven fabric made from fluff pulp. Unlike the normal papermaking, air-laid paper does not use water. Fibres are carried and formed by air. The raw material is long fibered softwood fluff pulp. The pulp are hammer milled freeing the fibres from each other before entering the wire of the  paper machine. Normally an air-laid paper consists of about 85 % fibre. A binder have to be applied as spray or foam,  which preferably can be activated and cured by heat. The process is based on the technology originally developed by Karl Kroyer in Denmark. It was originally conceived as a way to make paper without the use of water.

It is now 40 years since Karl Kryer invented the air-laid technique - a method to produce paper by using air instead of water. This adds to the paper a variety of properties such as absorbent properties. The production is environmentally friendly. Since then the use of air-laid products produced with this technology has exploded. Here in Denmark we have made all the machines, but most products have so far been fabricated abroad. A new Danish company "Danish Air laid Technology A/S" will remedy this situation.

In more recent times, the earlier work by M&J Fibertech and DanWebforming, both also located in Denmark, has resulted in turn-key machine systems that allow the production of multilayer webs based on cellulose fluff pulp, synthetic fibres or mixtures.

The formed webs may be thermally bonded, latex emulsion bonded or both systems may be used. Napkins, diapers, tablecloth made by the air-laid technique is huge industry today.