Lenzing Aktiengesellschaft

Södra Cell Aktiebolag Ab

Sodra Skogsagarna Ekonomisk Forening

Andrea Borgards

Herbert Sixta

Roland Möslinger

Andrea Promberger

Christian Weilach

Martina Opietnik

Christian Sperger

Jim Parkås

Gabriele Schild

Johannes Bogren

Susanne Möderl

Verena Silbermann

Jim Parkas

Roland Moeslinger

Andrea Proberger

The present invention provides a lyocell fiber with increased water retention value and decreased crystallinity as well as a method for producing same and products comprising same.

Lyocell fiber with viscose like properties

The invention relates to a process for producing a dissolving pulp from a cellulosic starting material using the kraft process, comprising the step of cooking the starting material with a cooking liquor. The process according to the invention characterized in that the starting material is exposed to a steam treatment prior to cooking and that the pulp obtained by cooking is subjected to cold caustic extraction (CCE) in the course of further processing.

Process for producing a pulp

A process for pretreating reclaimed cotton fibers to be used in the production of molded bodies from regenerated cellulose, characterized by effective metal reduction and adjustment of the degree of polymerization and brightness, including a metal removing stage and an oxidative bleaching stage of the reclaimed cotton fibers or pulp produced thereof. Reclaimed cotton fibers treated according to the described process may be used alone or in blends with conventional dissolving pulp as raw material for the production of molded bodies from regenerated cellulose. The process enables technically smooth, safe, and economically feasible spinning via the Viscose or Lyocell process, therefore, the current invention provides an efficient recycling pathway for cotton waste materials.

Process for pretreating reclaimed cotton fibers to be used in the production of molded bodies from regenerated cellulose

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.

Process and a dissolving pulp manufactured by the process

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Steinbach, Austria

Andrea Borgards