Fiber Cleaning Process
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Fiber Cleaning Process - 1

DIEFFENBACHER GROUP

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Fiber Cleaning Process - 2

05 | 2011 Z-sifter™ – typical applications Sunds MDF’s Z-Sifter™ with its unique zigzag plate design is specially developed for the MDF industry. The Z-Sifter™ removes efficiently light and heavy contaminants such as wood residues, glue lumps, fiber deposits, minerals and metals, latex and similar substances that would have a detrimental effect on the board quality. Furthermore, it protects the machinery down stream, particularly when producing thin board. The optional fiber heating and moisturizing system offers higher press production capacity. page 2

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Fiber Cleaning Process - 4

05 | 2011 Z-sifter™ - advantages Outstanding sifting performance Fully automatic and integrated in the overall PLC system No re-calibration of sifter needed when changing production capacity One single Z-Sifter™ up to 50 t/h throughput Fiber heating as option, up to 50°C fiber mat temperature at press inlet The only proven sifting technology for rubber wood page 4

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05 | 2011 Z-sifter™ with DDC (Dryer Discharge Conveyor) page 5

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DIEFFENBACHER GROUP Z-sifter™ with DRUA (Doffing Roller Unit)

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05 | 2011 Z-Sifter™ Fiber feed To forming To recycle system Blow box air Recirculation air Reject to clean-up page 7

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05 | 2011 Z-Sifter™ without fiber heating Z-Sifter™ Blow box system Circulation system Forming feeding system page 8

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05 | 2011 Z-Sifter™ with fiber heating Z-Sifter™ Blow box system Circulation system Supply air system Fiber heating Forming feeding system page 9

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Fiber Cleaning Process - 10

05 | 2011 Z-Sifter™ Inlet section with blow box and coanda section Sifter section with ZigZag Reject hopper Separation bend page 10

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05 | 2011 Blow box Injects the material into the sifter Breaks fiber lumps into single fibers page 11

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05 | 2011 Coanda section page 12

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DIEFFENBACHER GROUP ZigZag section

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Fiber Cleaning Process - 16

05 | 2011 Reject hopper including distribution plate Upper reject screw collects the rejected material and feeds it out of the sifter Lower reject screw collects dust collected under the distribution plate Distribution plate with vibrators distribute the airflow evenly in the bottom page 16

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05 | 2011 Reject hopper including distribution plate page 17

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DIEFFENBACHER GROUP Fiber cleaning control principle: Pressure control

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DIEFFENBACHER GROUP Fiber cleaning control principle: Airflow control

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Fiber Cleaning Process - 20

05 | 2011 Z-Sifter™ control system Pressure / airflow control • Z-Sifter™ inlet pressure is automatically controlled with a damper in the return air duct Velocity control • lifting air velocity is controlled with a damper in the circulation duct in relation to the fiber flow in production mode and with a fixed position in stand-by mode PV = Offset + Production x Ratio page 20

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05 | 2011 Reference list - Z-Sifter™ Z-SifterTM Reference List Plant name and location Country Kijchai MDF Mostovdrev Nelson Pine line II MDF Furniture East II Greenply Vanachai, Line 5, Suratthani Kronospan Huasheng Pfleiderer Masisa SA Nelson Pine line III Berneck Dongwha Merbok Advance Fibre Vanachai, Line 4, Suratthani Nuova Rivart Alfa-Wood - Pindos S.A., Grevena FINSA-Fibranor, Line 2, Rabade Kronotex GmbH, Wittstock MDF Hallein GmbH & Co KG, Hallein Vanachai, Line 2, Ban Bueng, Chon Buri FINSA-Orember, Orense Robina Woods (Yichun) Limited, Robina Yichun II Vanachai, Line 2, Ban...

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05 | 2011 Reference list - Z-Sifter™ Z-SifterTM Reference List Plant name and location Country FINSA-Fibranor, Line 1, Rabade FINSA-Fibranor, Line 2, Rabade Masisa Argentina II, Concordia Placas do Paraná, Jaguariaíva, Paraná Paneles Arauco SA (Alto Paraná SA), Puerto Piray Paneles Arauco SA, Trupan II, Cholguan Binder Holz GmbH, Hallein Masisa do Brasil, Ponta Grossa, Paraná Metro MDF Co. Ltd., Line 2, Kanchanaburi Fantoni S.p.A., PL 6, Osoppo FINSA-Padron, Line 2, Padron Dongwha Fiberboard, (Golden Hope), Nilai, Seremban Plantation Timber Products Ltd., Line 2 Fibramold. S.A., Cabrero...

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