Device and method for producing a 3d molded pulp product

A device for producing a 3D molded product from a pulp slurry, comprising:

• a pair of cooperating press tools, each having a respective product face,
• the press tools being movable relative each other between a closed press position, wherein the product faces are sufficiently close to press the pulp product there between, and an open transfer position, wherein the pulp product can be removed from the product face of one of the press tools,
• wherein at least one of the product faces is porous, and
• wherein the device further comprises a radiation heater, which is adapted to radiate heat from a front side of the porous press tool towards the product face of the porous press tool, when the porous press tool is in its open position.

A method of producing a 3D molded product from a pulp slurry comprising:

• providing a first and a second pair of cooperating press tools, each press tool having a respective product face, wherein at least one of the product faces of each pair of tools is porous,
• applying a pulp slurry layer to one of the product faces of the first pair of press tools,
• in a first forming step, pressing the pulp slurry layer between the first pair of press tools, while heating the pulp slurry layer and drawing a vacuum through the product face of the porous press tool,
• transferring the pulp slurry layer to a product face of the second pair of press tools,
• in a second, subsequent, forming step, pressing the pulp slurry layer between the second pair of press tools, while heating the pulp slurry layer and drawing a vacuum through the product face of the porous press tool,
• wherein the method further comprises:
• heating the product face of at least one of the porous press tools by radiating heat from a radiation heater from a front side of the porous press tool towards the product face of the porous press tool.