Abstract: The invention relates to a composite material filament having rheological characteristics suitable for use in additive manufacturing by extrusion, a method for manufacturing a three-dimensional composite product with an additive manufacturing system from a filament of such composite material, and to a three-dimensional composite product obtained by an additive manufacturing system using such composite material. The filament is formed of material comprising semi-crystalline polylactic acid and chemical pulp of wood-based cellulose fibers, wherein the amount of chemical pulp of wood-based cellulose fibers is selected such that sufficient complex viscosity is obtained at melt state, such that upon additive manufacturing by extrusion, composite melt formed of the filament has a ratio of shear storage modulus to shear loss modulus G?/G? equal to or higher than 1.0 at a temperature equal to or higher than 133° C.

Abstract: The invention relates to a composite material filament having rheological characteristics suitable for use in additive manufacturing by extrusion, a method for manufacturing a three-dimensional composite product with an additive manufacturing system from a filament of such composite material, and to a three-dimensional composite product obtained by an additive manufacturing system using such composite material. The filament is formed of material comprising semi-crystalline polylactic acid and chemical pulp of wood-based cellulose fibres, wherein the amount of chemical pulp of wood-based cellulose fibres is selected such that sufficient complex viscosity is obtained at melt state, such that upon additive manufacturing by extrusion, composite melt formed of the filament has a ratio of shear storage modulus to shear loss modulus G?/G? equal to or higher than 1.0 at a temperature equal to or higher than 133° C.

Abstract: A surgical operating table has a plurality of sections, connected to each other and capable of being pivoted at least in vertical plane, and upon which the patient is rested while a surgical procedure is performed. These sections include a back support, which comprises a lower back section, a middle back section protruding therefrom, and two shoulder sections disposed on either side of the middle back section and releasably secured to the lower back section. In the releasing process, the shoulder section is first pivoted to an inclined angle downward from a plane of the lower back section and the middle back section, thus enabling a protrusion on the shoulder section to be released from a clamping of the frame portion and the rod, on the lower back section after which the shoulder section is capable of being pulled away and removed from the lower back section.

Abstract: A surgical operating table has a plurality of sections, connected to each other and capable of being pivoted at least in vertical plane, and upon which the patient is rested while a surgical procedure is performed. These sections include a back support, which comprises a lower back section, a middle back section protruding therefrom, and two shoulder sections disposed on either side of the middle back section and releasably secured to the lower back section. In the releasing process, the shoulder section is first pivoted to an inclined angle downward from a plane of the lower back section and the middle back section, thus enabling a protrusion on the shoulder section to be released from a clamping of the frame portion and the rod, on the lower back section after which the shoulder section is capable of being pulled away and removed from the lower back section.