Annular nozzle-type paste shell

The invention provides an annular nozzle-type paste shell, which comprises a soft shell and a material extrusion head, wherein the interior of the soft shell has a cavity, and the material extrusion head and the soft shell are integrally connected; a discharge hole communicated with the cavity of the soft shell is formed in the material extrusion head. The annular nozzle-type paste shell is characterized in that the port of the discharge hole is provided with a check ring; the check ring and the material extrusion head are integrally connected through a connecting arm, and the discharge hole is blocked to become an annular nozzle hole; the check ring is round; the center of the check ring is located at a position which is from the center of the discharge hole to the straight extension direction of the connecting arm, deviates from the connecting arm and offsets in right amount; the inner side of the check ring is provided with a cone convex. Paste extruded from the paste shell provided by the invention is an annular column with a gap; the surface area of the paste is bigger; moreover, the paste is easy to envelop bubbles, so the paste is bulky, and can be extruded more smoothly; the extrusion amount is easy to master; the paste can be evenly coated more easily; by using the annular nozzle-type paste shell, oral teeth can be brushed cool and clean, and brushing on the oral teeth is time-saving. The paste shell provided by the invention has the advantages that the structure is reasonable, the additional cost can be ignored, the use is convenient, and the product additive value can be increased.