Symmetrical and asymmetrical light structures from particles of annual plants and method of producing light and asymmetrical structures from particles of annual plants

摘要

symmetrical and asymmetric light layers of single-year particles of cereal straw,in particular wheat, wheat, barley, oats or wheat, at least one layer with different large areas, the density of the apparatus below 300 kg/m3 per layer of the apparatus in which the nasal density is 20-60 kg/m3 in the case of 20-90 kg/m3 in two classes, and straw particles are bonded by pMDI or water-based glue in the amount of 2% -10% dry glue mass to the dry weight of straw particles. Mode of production of light and asymmetrical units of single-year plant particles calibrating the moisture content of straw, favourably pressed or baled,and then it is scraped together by cutting together at the same time fractionating the straw particles obtained so that the mesh is obtained with a sleeper density between 20 kg/m3 (most often the fractions remaining in the mesh with eyes 1 x 1 mm and 2,5 x 2,5 mm are around 70%,fractions less than 3%) and 60 kg/m3 (most often the fractions remaining in the mesh with eyes 1 x 1 mm and 2,5 x 2,5 mm are about 80-90%,fractions smaller than 5%),and then the mesh i s moistened from 1% to 25% by adding a glue-like adhesive in the amount of 2-10% dry straw, and then a carpet is formed and pressed at a temperature not less than 140-C, during 5-20 s/mm body thickness.