Outlast Technologies, Gmbh

Kelheim Fibres Gmbh

Matthew North

Mark Henry Hartmann

James Brice Worley

Ingo Bernt

Walter Roggenstein

Konrad Brunner

Reinhold Röthenbacher

Roland Scholz

Reinhold Rothenbacher

The present invention relates to a regenerated cellulose fiber having a multi-limbed cross-section. The fiber according to the invention is characterized in that the cross-section is formed of at least two multi-limbed basic shapes ('), which basic shapes are connected, in each case at least at one of their limb ends, to the limb end of another basic shape and the length of the connecting limb () resulting from the connection of the two limb ends is longer than the length of the shortest one of the other limbs by a factor of at least 1.5, preferably of from 1.5 to 2.0.

Regenerated cellulose fiber

A viscose fiber comprises a fiber body including a regenerated cellulosic material and a plurality of microcapsules dispersed in the regenerated cellulosic material. The regenerated cellulosic material is derived from an organic plant material and the plurality of microcapsules containing a phase change material has a transition temperature in the range of 0&#xb0; C. to 100&#xb0; C., the phase change material providing thermal regulation based on at least one of absorption and release of latent heat at the transition temperature.

Cellulosic fibers having enhanced reversible thermal properties and methods of forming thereof

A cellulosic fiber includes a fiber body including a cellulosic material and non-encapsulated phase change material dispersed within the cellulosic material. The non-encapsulated phase change material forms a plurality of distinct domains dispersed within the cellulosic material. The non-encapsulated phase change material has a latent heat of at least 40 Joules per gram and the cellulosic fiber has a latent heat between 9.8 Joules per gram and 132 Joules per gram and a transition temperature in the range of 0&#xb0; C. to 100&#xb0; C., and cellulosic fiber provides thermal regulation based on at least one of absorption and release of the latent heat at the transition temperature.

Cellulosic fibers having enhanced reversible thermal properties and applications of such cellulosic fibers are described. In one embodiment, a cellulosic fiber includes a fiber body including a cellulosic material and a set of microcapsules dispersed in the cellulosic material. The set of microcapsules contain a phase change material having a latent heat of at least 40 J/g and a transition temperature in the range of 0&#xb0; C. to 100&#xb0; C., and the phase change material provides thermal regulation based on at least one of absorption and release of the latent heat at the transition temperature. The cellulosic fiber can be formed via a solution spinning process, and can be used in various products where thermal regulating properties are desired.

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Bad Abbach, Germany

Matthew North