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High Accurancy Cold Press Machine

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Description

The pressing process in plywood manufacturing is a critical stage that involves both prepressing and hot-pressing gluing. Prepressing, which represents a modern technology widely employed in the industry, plays a key role in ensuring the quality of the final product. Prior to entering the hot press, the slab undergoes brief pressurization in the cold press to ensure that the veneer is effectively bonded together. This step is essential for achieving optimal strength and durability in plywood products.

To meet the requirements of pre-pressing, it is crucial for the adhesive to possess initial viscosity. Various methods are utilized to enhance tackiness or add specific fillers such as soybean flour, wheat flour, etc., into the adhesive. These additives play a significant role in improving bonding properties and overall performance of plywood.

Furthermore, incorporating polyvinyl alcohol into urea-formaldehyde resin has been found to be an effective way to enhance adhesion and improve moisture resistance in plywood production. The careful selection and application of these materials contribute greatly to enhancing the structural integrity and longevity of plywood products.

In conclusion, by understanding and optimizing each step within the pressing process – from prepressing with its initial viscosity requirements to hot-pressing gluing with carefully selected additives – manufacturers can produce high-quality plywood that meets stringent industry standards while also meeting diverse market demands.

Nominal pressure	6000KN (600 TONS)
Boards in-feeding direction	Horizontal
Max. opening	1500mm
Dimension of working platform	1380mm x 2700mm
Dimeter of plunger cylinders	Ф320mm (Wuxi)
Number of plunger cylinders	2 Pcs
Diameter of side helpful cylinders	Ф60mm (Wuxi)
Number of side helpful cylinders	2Pcs
Allowed pressure of plunger cylinders	≤26Mpa
Stroke of plunger cylinders	1000mm
Position of plunger cylinders	Upside
Pressure of unit plate blank	12Kgf/cm2
Dimension of the board	2560mm x 1280mm
Allowed pressure	≤26Mpa
Machine net weight	17000Kgs
Control method	Automatic pumping station
Thickness of upper and lower crossbeams	900mm
Thickness of steel plate	35mm
Thickness of active crossbeam	400mm
Thickness of steel plate	20mm
Chain and roller transports device	YES
Frame structure	Composite frame for loading container