How to Manufacture Marine Plywood?

What is Marine Plywood?

Marine plywood is different from ordinary plywood. It is water resistant and very expensive. In Marine Plywood manufacturing, glue is mixed with the cross veneer heavily for tight construction bonding and to make it waterproof.  Due to its water resistant property, it can be used in exterior side decoration. Marine plywood can be used for marine furniture manufacturing.

Manufacturing Process of Marine Plywood:

To make marine plywood, Gorjon, Pine, Oak etc hard wood is used to make inner sheet of marine plywood. For manufacturing marine plywood, timbers are crossed cut into 8’-6’’ (eight feet six inches) length. Then, the cross cut timbers are debarked and wet into a water tank. Next, the timbers are accomplished peeling by peeler machine to make 8’ feet long (thickness 2.2mm) cross veneer. Some cross veneer are cut into 4’ (four feet) long for making 8’X4’ size cross sheet. After peeling, the cross veneer are dried through dryer for removing moisture and stacked for after use of making marine plywood.

For making marine plywood, Phenol formaldehyde resin is used. Because, this resin resist water entrance to the plywood and strengthen heavy bonding of the assembling layer. The dried cross veneer (both 8’and 4’ sized) are passed through the glue spreader machine for spreading resin properly. After spreading resin the crosses are dried for 30minutes to remove extra moisture. Before glue spreading, inner sheet (thin veneer) is laid on the table and the crosses are laid on the inner sheet one after another. In this way, this step is done several times depends on thickness of marine plywood. After that, this is covered by Aluminum plates and passed into the hot press. After pressing this marine plywood, this is trimmed and accomplished sanding for decorative veneer pasting. Number of Layer of marine plywood depends on thickness of plywood; it may from 6mm to 18mm thickness. Decorative veneers may be Burmateak, Champ, Gorjon, Oak or different kinds of artificial veneer or Rimini veneer. Finally, decorative veneer is applied on both surfaces of raw plywood to make marine plywood.  After that, pressing is done again with hot press machine. Then this marine plywood is accomplished sanding, repairing and quality checking for shipment. That’s all for manufacturing marine plywood.

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