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 Resin consumption can be cut in half with EVOjet™ technology.
The market has long been looking for a system to significantly reduce
resin consumption in the production of such fiberboard products as LDF,
MDF and HDF.
The EVOjet™ dry-resin blending system from Sunds MDF
Technologies AB in Sweden, a member of Dieffenbacher Group, meets this
demand with savings of up to 50 % without compromising panel quality
and production speed or uptime.
The traditional blowline blending system in MDF-lines is associated
with cleaning stops and the heat from the dryer reduces resin
reactivity, resulting in increased resin consumption. The addition of
resin in the blowline also creates higher levels of formaldehyde in the
dryer exhaust.
Since several years attempts were made applying the resin after the
dryer, but the systems still had the past drawbacks of resin spots and
frequent stops for cleaning. Moreover, the savings achieved were
limited. In response to the growing need to reduce resin consumption,
to cut costs and minimize formaldehyde emission, Sunds MDF Technologies
developed its highly innovative EVOjet™ dry-resin blending system.
The first EVOjet™ dry blending system has been in operation at
Flakeboard's fiberboard mill in St. Stephen, New Brunswick, Canada, for
more than two years now. The operational objectives set for this system
have been achieved. Significant results are reported, particularly in
reduction of resin consumption, pressing capacity and emission levels.
The operating principle of the EVOjet™ system is based on a new
dry-resinating method, in which all resin is added after the dryer. The
only additive introduced prior to the dryer is paraffin wax.
The EVOjet™ system ensures perfect resination with a combination of
the large surface area of fibers in the conveying air and an effective
resin distribution.
The heart of the EVOjet™ system is the resinator featuring two
high-speed rotating spike rollers that effectively disintegrate the
fiber flow. Any fibre balls or flocculates are split into single
fibres. The fibre is distributed over the width of the spike rollers
and the flow is accelerated by the high-speed rollers. The
disintegrated flow of fibres is exposed to the resin from three
directions.
The EVOjet™ dry blending system is designed to allow 100% addition of resin on the dry side.
The unique design of the resinator combined with the resin nozzles
ensures a better resin distribution than any other available dry-resin
system on the market.
The EVOjet™ system is available in four different sizes to cover the
typical MDF capacity range. The largest EVOjet™ system is designed for
36t/h fibre throughput in a single unit.
The modular design makes it possible to retrofit the EVOjet™ into any existing line.
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