The preexpansion process is the most sensitive part of EPS production, if you choose a system which is not accurate, you may either pre-expand your bead too low, creating quality problems in the final product, or too high which means you use too much raw-material and loose money.
Homogenous preexpansion with lowest density variation, fast cycle ( i.e. high capacity ) and the suitable fluid-bed dryer, these are the minimum requirements for a preexpansion system.
Don´t make any compromises or buy cheap clones - only the originals from Europe will work profitable !
EPS-MACHINERY TEAM can help you source the right machine for your needs
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The most common type in the early days of EPS production (block moulding) was the continuosly operated preexpander, batch preexpanders did not provide enough capacity. Nowadays you hardly find the continous process anymore, the advantages of today´s systems (western european) make this type of process obsolete.
WIESER built the first pressurized preexpanders already in the 70ies, so we can tell right from wrong.
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Machines
