Hot-Pressing Tool Half, Hot-Pressing Device with A Hot-Pressing Tool and Method for Hot Pressing Preforms from A Fiber-Containing Material

A hot-pressing device with at least one first tool component and at least one second tool component, wherein the first tool component has:

• a first tool body, wherein the first tool body has, on at least one side, at least one first molding device, which has first contact surfaces for a preform to be received, wherein the first tool body includes a thermally conductive material and has one or more first temperature control devices, which are configured to heat the first tool body and the at least one first molding device, wherein the at least one first molding device has, on the first contact surfaces for a preform to be received, first openings, which open into at least one first channel in the first tool body, wherein the at least one first channel from the first openings opens into at least one first connection, wherein at least one second opening is provided, which provides a fluidic connection to the first openings of the at least one first molding device separate from the at least one first connection;
• wherein the second tool component has:
• a second tool body made of a thermally conductive material and the second tool body has, on at least one side, at least one second molding device, which is formed complementary to the at least one first molding device and has second contact surfaces for a preform to be received, resulting that in each case one cavity for a preform to be received is formed between the first contact surfaces of the at least one first molding device of the first tool component and the second contact surfaces of the at least one second molding device of the second tool component when the first tool component and the second tool component are pressed against each other for the hot pressing of preforms.

A method for hot pressing preforms from a fiber-containing material using a hot-pressing device, wherein a first tool component has a first tool body and at least one first molding device and a second tool component has a second tool body and at least one second molding device formed complementary to the at least one first molding device, having the following steps:

• providing at least one preform made of fiber-containing material;
• heating at least the first tool body and the at least one first molding device via at least one first temperature control device;
• placing the at least one preform on first contact surfaces of the at least one first molding device;
• moving the second tool component relative to the first tool component, wherein the at least one preform comes into contact with second contact surfaces of the at least one second molding device;
• pressing the first tool component and the second tool component until the first contact surfaces and the second contact surfaces form at least one closed cavity;
• wherein the first tool component has:
• the first tool body, wherein the first tool body has, on at least one side, the at least one first molding device, which has the first contact surfaces for a preform to be received, wherein the first tool body includes a thermally conductive material and has the at least one first temperature control device, which is configured to heat the first tool body and the at least one first molding device, wherein the at least one first molding device has, on the first contact surfaces for a preform to be received, first openings, which open into at least one first channel in the first tool body, wherein the at least one first channel from the first openings opens into at least one first connection, wherein at least one second opening is provided, which provides a fluidic connection to the first openings of the at least one first molding device separate from the at least one first connection;
• and
• wherein the second tool component has:
• the second tool body made of a thermally conductive material and the second tool body has, on at least one side, the at least one second molding device, which is formed complementary to the at least one first molding device and has the second contact surfaces for a preform to be received, with the result that in each case one cavity for a preform to be received is formed between the first contact surfaces of the at least one first molding device of the first tool component and the second contact surfaces of the at least one second molding device of the second tool component when the first tool component and the second tool component are pressed against each other for the hot pressing of preforms;
• wherein residual moisture evaporating due to the heat input generated via the at least one first temperature control device and a pressure generated by pressing the first tool component and the second tool component is discharged from the at least one first preform via at least the first openings, the at least one first channel and the first connection, wherein a gas or gas mixture with a water saturation that is different from steam extracted by suction is introduced during the extraction by suction of the evaporating residual moisture via at least one second opening which provides a fluidic connection to the first openings of the at least one first molding device separate from the at least one first connection.