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OAO Ivatsevichdrev - Siempelkamp

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Feeding of boards from storage Inline paper laying system KT 400<br />

Charging time: shorter is possible!<br />

The efficiency of a short-cycle press is based on two factors:<br />

press time and charging time. The latter is the phase between two<br />

press ing cycles. To increase the efficiency of a press these two<br />

decisive factors would have to be optimized. The charging time<br />

could tip the balance when it comes to further efficiency increases!<br />

Below is a look at these two “hot phases”.<br />

Press time<br />

= pressureless exposure time:<br />

the phase from when the<br />

charge makes the first full<br />

contact with the lower press<br />

plate to the time when the<br />

pressure starts to rise. The<br />

decisive factor here is in what<br />

time the pressure reaches<br />

120 N/cm² . With only<br />

0.8 seconds, the KT 700<br />

achieves enormous speeds!<br />

Performance<br />

+ Charging time<br />

time between two pressing cycles<br />

Reduce pressure<br />

Open press<br />

Discharge product<br />

Bring in charge<br />

Place Charge<br />

Close press<br />

Increase pressure<br />

SIeMpelkAMp | MACHIneRy AnD PLAnts<br />

Furthermore, the concept benefits from press cylinders that can be<br />

controlled individually and from custom-designed hotplatens.<br />

Another special feature is the automatic size change: necessary<br />

adjustments to individual machines and equipment are carried out<br />

automatically after the user inputs the data into the control interface.<br />

the drifting away of the charges, which is common when thin<br />

boards are pressed, has become obsolete. A specially designed<br />

lifting function of the loading system prevents this from<br />

happening and allows the controlled placement of the charge in<br />

the press.<br />

this type of short-cycle press is optimally suited for manufacturers<br />

looking to produce a reliable product according to european standards.<br />

two of these multi-piston short-cycle presses for particleboard<br />

including an automatic loading system have recently started<br />

operation in the Republic of Belarus for <strong>Ivatsevichdrev</strong>: this woodbased<br />

panel manufacturer ordered both presses as part of a<br />

complete line. With an annual capacity of 330,000 m³ of particleboard,<br />

these presses almost double the entire manufacturing<br />

capacity of the country.<br />

these short-cycle presses are designed for a maximum of 180<br />

press cycles per hour. the best mechanically possible charging time<br />

at maximum board width is eight seconds; the best mechanically<br />

possible pressureless exposure time amounts to 1.2 seconds. the<br />

duration from when the product makes full contact with the lower<br />

press plate to the point when the correct pressure is reached is<br />

particularly short, and thus increases the efficiency of this type of<br />

short-cycle press!

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