| 摘要 |
A capsule (12) comprises a cylindrical body (12B) having one end (19) open and the other end (20) closed with an angled discharge nozzle (26) at the closed end (20) and a piston (28) movable along inside the capsule. The shape of the head (28B) of the piston (28) matches the shape of the inner surface (22) of the capsule (12) at the closed end (20). To reduce the risk of entrapping air in the material in the capsule, the inner surface (22) of the capsule at the closed end (20) has a frustro-conical shape forming a frustro-conical chamber (23). |
