2results about How to "Avoid affecting uniformity" patented technology

This application relates to a sprayable carrageenan liquid formulation and its preparation method, belonging to the field of pharmaceutical technology. The sprayable carrageenan liquid formulation comprises 0.12%-0.2% by weight of 1-carrageenan, 0.5%-1.5% by weight of carboxymethyl chitosan, 0.5%-2.5% by weight of sodium chloride, a pH adjuster, and water, and can be applied to the nasal cavity or oral cavity in the form of a spray to provide good coverage.

This invention relates to the field of filament drawing technology for 3D printing, and particularly to a filament drawing device for 3D printing, comprising: two fixed frames, each with a rotating shaft rotatably connected to it, and the two rotating shafts being connected by a transmission belt. This invention uses a receiving groove on an arc-shaped receiving section in the middle of the transmission belt to receive the filament, and during the receiving process, it moves the filament. The rotation of the transmission belt and the straightening roller causes the receiving groove to engage with an annular groove to correct the roundness of the filament. Simultaneously, the filament is always supported by the receiving groove, preventing it from being suspended in the air during movement and thus deforming due to gravity. This improves the roundness and uniformity of the filament, avoiding the filament getting stuck on the print nozzle during 3D printing due to low uniformity, and improving the smoothness of filament use.