Thai MDF manufacturer Wisewoods Co Ltd has commissioned a second Dieffenbacher Z-Sifter with Dryer Discharge Conveyor (DDC) for optimized material feeding at its MDF site in Khao Yoi, Thailand.
The investment is designed to improve quality and saves energy by replacing two conventional sifters with one Z-Sifter. It also further enhances the processing of rubberwood, which is used as the raw material for 99% of the company’s products.
It follows the successful start-up of Wisewoods’ new CEBRO MDF plant from Dieffenbacher in August 2024, which was also equipped with a Z-Sifter for efficient processing of the challenging raw material.
“Since the latex residue in rubberwood usually has almost the same density as the wood fibers, conventional sifters, while effective at removing glue lumps, metals and large pieces of fiber, cannot remove the latex residues,” explained Visarut Palarit, Deputy Director at Wisewoods.
“That’s why we rely on the Dieffenbacher Z-Sifter, which has a zigzag profile and was specifically developed for producing MDF from rubberwood. The Z-Sifter effectively removes most of the latex stains from our finished product.”
Wisewoods says it has been able to reduce energy consumption in this area by around 50%.
Dieffenbacher has supplied 15 of these “rubberwood specialists” over the past decade – to customers in Thailand, Vietnam, Malaysia and Indonesia. By the end of 2026, four additional Z-Sifters with DDC for optimized material feeding are scheduled to start operation in Thailand, including two at Panel Plus in Songkhla and two at Metro-Ply MDF in Surat Thani.
