Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1994-02-10
1996-04-16
Robinson, Ellis P.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 367, 428 3691, 4285428, 4289033, 215 122, 215396, 215398, B65D 100, B65D 2310
Patent
active
055080766
ABSTRACT:
A preform for use in the production of a container in a blow-molding operation includes an inner parison molded in a first mold to include a finish portion including a mouth-defining opening, a threaded outer surface adapted to engage a container closure, and a lower margin including a support ring, a closed bottom portion including a gate vestige, and a barrel portion extending between the finish portion lower margin and the bottom portion, and an outer parison molded in a second mold and consisting essentially of a barrel portion having a length similar to the inner parison barrel portion and a bottom portion including an opening for receiving the inner parison gate vestige, the outer parison having an inner surface conformably matching the inner parison outer surface. The outer parison is mechanically telescopically assembled over the inner parison outside the first and second molds to form a layered preform, the preform optionally including an intermediate layer. The layered preform can also include a handle including a ring portion having an inner diameter similar to the inner parison barrel portion outer diameter, and a gripping portion projecting outward from the ring portion, the handle ring portion being positioned between the outer parison barrel portion and the inner parison finish portion.
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Research Disclosure, Dr. R. L. Addleman, published Mar., 1977 Imperial Chemical Industries Limited.
Dye Rena L.
Electra Form, Inc.
Robinson Ellis P.
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