Process for the pretreatment of fibrous material, pretreatment chamber and fiber molding plant
AssigneeKIEFEL GmbH
InventorMatthias Hausmann
Life of this patent
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Abstract
The present disclosure relates to a process for the pretreatment of fibrous material in a production process for producing three-dimensional products, to a pretreatment chamber for the pretreatment of fibrous material, and to a fiber molding plant having at least one pretreatment chamber. By pretreating relatively dry fiber material, the shaping step in a manufacturing process can be significantly improved and the choice of product geometries can be increased.
Claims16
A process for pretreatment of fibrous material having a water content of less than 30% by weight in a production process for producing three-dimensional products, wherein the fibrous material is subjected to product-specific pretreatment before at least one process step of shaping three-dimensional products, wherein the at least one process step takes place directly after the pretreatment of the fibrous material, and wherein the product-specific pretreatment includes selectively moistening the fibrous material to provide different moisture content in different regions of the fibrous material.
A pretreatment chamber for pretreatment of fibrous material that has a water content of less than 30% by weight, wherein the pretreatment chamber is part of a fiber molding plant for producing three-dimensional products, wherein product-specific pretreatment of the fibrous material is configured to be carried out in the pretreatment chamber, and said pretreatment chamber has at least one pretreatment device with which the fibrous material introduced therein undergoes at least one temperature, moisture, and/or steam treatment and/or undergoes an additive treatment, wherein the pretreatment chamber includes at least one portion where the fibrous material is selectively moistened to provide different moisture content in different regions of the fibrous material.
Dependencies are inferred from the claim text.