Firma Carl Freudenberg

Carl Freudenberg Kg

Günter Frey

Klaus Veeser

Holger Schilling

Armin Greiner

Rudolf Wagner

Ralph Berkemann

Gerhard Stuppy

Jochen Bialek

Klaus Marek

Jochen Bechtum

The invention relates to a thermally bound non-woven material containing a low-shrinkage dual-component core-sheath fiber consisting of a crystalline polyester core and a crystalline polyester sheath which has a melting point at least 10&#xb0; C. lower than the core, the heat-shrinkage characteristic of said fiber being less than 10% at 170&#xb0; C.

Thermally bound non-woven material

A tubular sleeve for a plant germination substrate consists of a a polymer mass and nonwoven, bonded fiber material treated with fungicides, in which cellulose fibers predominate. The rest of the synthetic fibers have a size of 1.3 to 17 dtex and give the fiber material a porosity of 1000 to 1600 l/s.m.sup.2 (air passage at 1.0 mbar). The fiber material is bonded by a binding agent and additionally contains fertilizer embedded in the polymer mass.

Sleeve for plant germination substrate

Growing community of inventors

Schliengen, Germany

Günter Frey