A process for the manufacture of a functional pre-preg mat of ligno-cellulosic material is disclosed. In said process, pulp fibres are mixed with at least one functional solution including a cross-linking formulation. The cross-linking formulation has been prepared by dissolving at least one cross-linking agent in a water or alcohol based solvent at a temperature below 120° C. Pulp fibres treated with the at least one functional solution are then formed into an continuous mat. The mat of pre-preg ligno-cellulosic pulp fibres formed in the previous step is transferred to a drying step during which the temperature within the ligno-cellulosic mat is kept below 120° C. A functional pre-preg mat of ligno-cellulosic material suitable for use as raw material in a thermoforming process is also disclosed.
The object of the invention is a process for the manufacture of a functional pre-preg mat of ligno-cellulosic material. In said process, pulp fibres are mixed with at least one functional solution including a cross-linking formulation. The cross-linking formulation has been prepared by dissolving at least one cross-linking agent in a water or alcohol based solvent at a temperature below 120°C. Pulp fibres treated with the at least one functional solution are then formed into an continuous mat. The mat of pre-preg ligno-cellulosic pulp fibres formed in the previous step is transferred to a drying step during which the temperature within the ligno-cellulosic mat is kept below 120°C. A further object of the invention is a functional pre-preg mat of ligno-cellulosic material suitable for use as raw material in a thermoforming process.
D04H 1/58 - Non-tissés formés uniquement ou principalement de fibres coupées ou autres fibres similaires relativement courtes à partir de voiles ou couches composés de fibres ne possédant pas des propriétés cohésives réelles ou potentielles par application, incorporation ou activation de liages chimiques ou thermoplastiques, p. ex. adhésifs
D21C 9/00 - Post-traitement de la pâte de cellulose, p. ex. de la pâte de bois, ou des linters de coton
D21H 11/20 - Fibres modifiées chimiquement ou biochimiquement
D04H 1/58 - Non-tissés formés uniquement ou principalement de fibres coupées ou autres fibres similaires relativement courtes à partir de voiles ou couches composés de fibres ne possédant pas des propriétés cohésives réelles ou potentielles par application, incorporation ou activation de liages chimiques ou thermoplastiques, p. ex. adhésifs
D21H 11/20 - Fibres modifiées chimiquement ou biochimiquement