Method and apparatus for preparing mineral fiber based growth medium, a plant growth medium and use thereof

摘要

The present invention relates to a process for the preparation of a growth agent for use in the treatment of growtha plant having a density gradient comprising the steps of securingprimary tissue containing mineral fiber materialand a vulcanized binder, compressing the primary tissuein at least one longitudinally extending bandin such a way that the applied pressure increases substantiallycontinuously in the direction of the bandwidth, forming the secondary tissueby forcing the primary tissue to fold it, arbitrarycompressing said secondary tissue and vulcanizingbinders. Equipment for the preparation of mineral fiber forminga plant growth agent and a plant growth agent hasaverage density from 30 kg / m 3 to 120 kg / m 3.