METHOD OF HEATING VENEER IN INTERMITTENT CARRYING TYPE HOT PLATE DRIER

摘要

PURPOSE: To reduce the generation of a crack caused by the difference in shrinkage by forcibly curving at least one of a heating board in a direction that orthogonally crosses the running direction of an endless belt when intermittently transferring a single plate for heating. CONSTITUTION: A single plate 9 is carried intermittently in a direction that orthogonally crosses fiber at endless belts 1 and 2, a plurality of upper heating boards 3 are lowered by an elevation device in synchronization with intermittent stop and at the same time a plurality of lower heating boards 4 are raised for heating, and then both heating boards 3 and 4 are separated each other and started to be carried again after heating for a specific amount of time. With the repetition of the operation, successively the single plate 9 is dried and carried out. However, on heating, both heating boards 3 and 4 touch a stopper 7, the closest interval is regulated so that it exceeds the total of the thickness of the single plate 9 and the endless belts 1 and 2 by a specific amount and at the same time is forcibly curved by a desired amount in a direction that orthogonally crosses the running direction due to press. In this manner, heating is gradually decreased toward both edge parts, thus reducing a crack caused by the difference in drying and shrinkage in the direction of a fiber.