LIGHT MOULDED PRODUCT OF LARGE SIZE AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2019 - IPC B32B1/02 B32B3/12 B32B3/28 B32B29/00 D21J3/00 A61G17/07 

FIELD: physics.

SUBSTANCE: invention relates to light molded products of large size and to a method of making such molded products. Lightweight three-dimensional curved product of large size comprises outer shell from molded suspended cellulose mass, flexible reinforcing divider corresponding in shape to inner side of outer shell and attached to it, and inner shell from molded cellulose mass or flexible paper material, attached to separating coating. Method of molded three-dimensional curved product includes squeezing suspension from cellulose mass on water basis between first male mold halved, coated with elastomer material, and a second female mold half, drying the product at high temperature under pressure to form a molded shell from the suspended cellulose mass, obtaining a flexible base separating structure, bonding the strengthening separating structure to the inner side of the molded shell from the suspended cellulose mass, obtaining an inner shell from the molded cellulose mass or other flexible paper material and gluing it to the separating structure of the base.

EFFECT: invention enables to obtain three-dimensional (3D) product of large dimensions molded from cellulose mass, which is light, very strong, with smooth and smooth outer surface, and also easy and inexpensive in production.

26 cl, 9 dwg