PRESS-ON CAPS AND SEALED CONTAINERS COMPRISING THE PRESS-ON CAPS

摘要

An irreversible press-on cap (10) comprises a tubular sleeve (13) which extends along an axis of extension (X′-X′) and, at one end of the cap (10), a rim (16) that radially projects from the tubular sleeve (13), the press-on cap is made of a polymeric material that can withstand a high-temperature sterilization cycle and comprises a capping wall (17) that extends from the rim (16) and across the surface delimited by the rim (16), the capping wall (17) has a height variation relative to the rim (16) that ranges from −1% to 1% a characteristic dimension of said capping wall (17); the cap further comprises a plurality of, preferably three, protrusions (21), that jut out of a front surface (17A) of the capping wall (17), the protrusions (21) are shaped complementary to a grip head of a filling apparatus to guide the grip head during application of the cap (10).