METHOD FOR MANUFACTURING POLYMERIC PRODUCT Russian patent published in 2023 - IPC B29C70/24 D04H1/54 

FIELD: manufacturing of polymeric materials.

SUBSTANCE: invention relates to a method for manufacturing a product from a polymeric material. The method includes weft knitting of a thread or a set of threads. In this case, the thread or set of threads contains from 90% to 100% polymeric material by volume. The three-dimensional dry preform is then produced in three dimensions and as a continuous piece. Moreover, the preform corresponds to the shape of the finished product to be obtained. The preform is consolidated by heating under pressure to achieve at least a melting point temperature of 90% to 100% of the polymeric material, and the finished product is cooled. The polymer material is selected from polycarbonate, polyurethane, PMMA, low density polyethylene terephthalate, polyetherimide, polyether ether ketone (PEEK), polyether ketone ketone (PEKK), or combinations thereof. Moreover, the dry preform has a mass per unit area ranging from 500 g/m² to 1300 g/m², and the dry preform is produced with a density of 3 rows/cm to 6 rows/cm and from 2 columns/cm to 3 columns/cm.

EFFECT: finished products with a controlled thickness.

8 cl, 5 dwg, 4 ex