The prepress, an essential component in the production process of plywood, is a mechanical equipment designed to facilitate initial bonding before gluing. Its primary purpose is to optimize the hot pressing cycle and enhance board quality by subjecting the veneer to cold pressing shortly after coating the blank. This preliminary shaping allows for better adhesion during the subsequent hot press gluing process.
In terms of its structural composition, a typical prepress comprises a sturdy frame that provides stability and support, a fixed beam for consistent pressure application, a moving beam for adjustable compression, a plate device for even distribution of force, oil cylinders for hydraulic power transmission, and an electronic control device for precise operation monitoring.
The significance of the prepress cannot be overstated as it serves as a pivotal link in the production chain. By ensuring proper bonding at an early stage, it contributes significantly to improving plywood quality and overall manufacturing efficiency. Its role in reducing defects and enhancing product consistency makes it indispensable in modern plywood production facilities.
Furthermore, advancements in prepress technology have led to innovations such as automated controls and integrated sensors that further improve precision and reliability. These developments have not only increased productivity but also enhanced workplace safety by minimizing manual intervention.
Overall, the prepress stands as a testament to continuous improvement within the woodworking industry through its ability to streamline processes while maintaining high standards of product quality.
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Nominal pressure |
6000KN (600 TONS) |
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Boards in-feeding direction |
Horizontal |
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Max. opening |
1500mm |
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Dimension of working platform |
1380mm x 2700mm |
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Dimeter of plunger cylinders |
Ф320mm (Wuxi) |
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Number of plunger cylinders |
2 Pcs |
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Diameter of side helpful cylinders |
Ф60mm (Wuxi) |
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Number of side helpful cylinders |
2Pcs |
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Allowed pressure of plunger cylinders |
≤26Mpa |
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Stroke of plunger cylinders |
1000mm |
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Position of plunger cylinders |
Upside |
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Pressure of unit plate blank |
12Kgf/cm2 |
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Dimension of the board |
2560mm x 1280mm |
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Allowed pressure |
≤26Mpa |
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Machine net weight |
17000Kgs |
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Control method |
Automatic pumping station |
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Thickness of upper and lower crossbeams |
900mm |
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Thickness of steel plate |
35mm |
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Thickness of active crossbeam |
400mm |
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Thickness of steel plate |
20mm |
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Chain and roller transports device |
YES |
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Frame structure |
Composite frame for loading container |
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