Abstract: A process for separation of the cellulosic part from a raw material composition comprising polyester and cellulose is provided. A blend is prepared comprising a raw material composition comprising polyester and cellulose and a hydrolyzing liquor wherein the hydrolyzing liquor comprises a first mixture comprising an alkaline solution containing hydroxide ions. The hydrolyzing liquor is added to give the blend an effective alkali concentration in a range from 5 g/l to 150 g/l, wherein the effective alkali concentration is calculated as NaOH, and the hydrolyzing liquor:raw material composition ratio is from 1.5:1 up to 25:1 and keeping the blend at a temperature of 100° C. or above.

Abstract: The invention relates to processes for manufacturing pulp and more specifically to improved processes for manufacturing dissolving pulp. The processes have primarily been developed to be used in connection with large scale kraft processes, i.e. they have been designed to be incorporated into a plant. A liquor derivable from the process and comprising xylan, lignin, alkali and water is also disclosed as well as a dissolving pulp produced by the process.

Abstract: The invention relates to processes for manufacturing pulp and more specifically to improved processes for manufacturing dissolving pulp. The processes have primarily been developed to be used in connection with large scale kraft processes, i.e. they have been designed to be incorporated into a plant. A liquor derivable from the process and comprising xylan, lignin, alkali and water is also disclosed as well as a dissolving pulp produced by the process.

Abstract: The present invention relates to a process for forming a pulp mixture, the process comprising the steps of: a) providing a wood material and a first liquor, b) treating the wood material in the first liquor in order to release wood fibers, c1) introducing an agricultural crop/residue before or during the treatment of the wood material, and during the treatment deriving a first fraction comprising hemicellulose from the agricultural crop/residue, and/or c2) introducing a suspension of a first fraction comprising hemicellulose and a residue liquor derived from agricultural crop/residue by a liquor treatment, the introduction being done before, during or after the treatment of the wood material. The invention further relates to a pulp mixture comprising 1-30% originating from agricultural crop/residue and 70-99% originating from wood material. The pulp mixture comprises non-wood hemicellulose and at least part of the non-wood hemicellulose is sorbed on the wood fibers.