A method of forming a closure
AssigneeObrist Closures Switzerland GmbH
InventorsClaude BENOIT-GONIN, Philippe BARDET
Life of this patent
Estimating the term…
Abstract
A method of forming a bi-injected closure, comprising the steps of: forming a cap with a top plate and a depending sidewall, in a first injection moulding phase using a first mould part, the cap formed so as to include one or more external sealing areas; changing the first mould part for a second mould part, the second mould part sealing against the or each sealing area on the cap; and forming an outer ring around the cap sidewall whilst the second mould part is sealed against the sealing area/s in a second moulding phase.
Claims17
A method of forming a bi-injected closure, comprising:
- forming an inner cap with a top plate and a depending cylindrical sidewall in a first injection moulding phase using a first mould part, the sidewall of the inner cap formed so as to include two external sealing support areas, the sealing support areas comprising radial steps which flank a portion of the sidewall onto which an outer ring is to be formed;
- changing the first mould part for a second mould part, the second mould part sealing against the sealing areas on the sidewall of the inner cap so as to delimit a cavity for the outer ring;
- and
- forming the outer ring around the sidewall of the inner cap whilst the second mould part is sealed against the sealing support areas in a second moulding phase, a material for the outer ring being injected between the two sealing support areas.
2-5. (canceled)
18-35. (canceled)
Dependencies are inferred from the claim text.