Methods and arrangements for continuous manufacture of building panels

A continuous press arrangement for manufacture of building panels, comprising:

• an upper rotatable inlet drum connecting to an upper rotatable outlet drum via an upper continuous press belt and a lower rotatable inlet drum connecting to a lower rotatable outlet drum via a lower continuous press belt, said upper and lower press belts configured to form a product path therebetween for feeding a product in a feeding direction in response to rotation of said drums or displacement of said press belts;
• an upper press table and a lower press table, each comprising at least one displaceable pressure cushion configured to be displaced into sealing abutment with the press belt for facilitating a pressure zone configured to be filled by pneumatic or hydraulic pressure for pressurization, an entire perimeter of the pressure zone being delimited by the pressure cushion;
• wherein the arrangement comprises one or more pressure bars disposed upstream and/or downstream of an entirety of the pressure cushion and of an entirety of the pressure zone, in the feeding direction, wherein said one or more pressure bars are configured to apply a pressure to the upper press belt and/or the lower press belt respectively in a direction towards the product path, and
• wherein a subsequent pressure bar in a sequence of pressure bars arranged downstream said pressure cushion is configured to apply a pressure no greater than the pressure exerted by a preceding pressure bar in said sequence.