Mold for improved press-on cap and seal

Details Mold for improved press-on cap and seal Mold for improved press-on cap and seal

1986-12-29

1989-04-11

Hoag, Willard E.

Static molds

Including means to apply force to remove or release product...

Pin or sleeve means

249124, 249142, 249144, 249151, 249160, 425556, 425577, B29C 3934, B29C 4540

Patent

active

048199060

ABSTRACT:
A mold to manufacture an improved press-on bottle cap is disclosed. The cap has a top disk and a thin-walled outer skirt dependent therefrom with an annular tear score line on its inside wall and a laterally projecting tear tab which permit the cap to divide into a lower portion an upper reclosure cap. An annular lip is provided about the outside wall of the cap, approximately in the middle of the reclosure cap. The lip is discontinuous with an open sector above the tear tab. The mold has its parting line in the plane of the annular lip and the lower half of the mold has a lateral cavity to form the tear tab. In this manner, a laterally offset tear tab is provided without splitting the mold cavity along an axial plane.

REFERENCES:
patent: 3344942 (1967-10-01), Hedgewick
patent: 3419244 (1968-12-01), Hedgewick
patent: 3482814 (1969-12-01), Hedgewick
patent: 3759762 (1973-09-01), Childs et al.
patent: 3904165 (1925-09-01), Denboer
patent: 3915613 (1975-10-01), Ruch
patent: 4155698 (1979-05-01), Aichinger
patent: 4519569 (1985-05-01), Nolan
patent: 4552328 (1985-11-01), Dutt et al.
patent: 4610621 (1986-09-01), Taber et al.
patent: 4618121 (1986-10-01), Conti
Whittington, Whittington's Dictionary of Plastics, Technomics, Stamford, Conn. (1968) p. 213.

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