Blow molding method for producing synthetic resin receptacle wit

Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...

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Details

264536, 264540, 264152, 264334, B29C 4970

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active

057628599

ABSTRACT:
The object of this invention is to provide a receptacle with a closure cap which is molded simultaneously with the receptacle body by using blow mold machine. A synthetic resin material is introduced into a pair of mold halves and a fluid such as air is injected into the tube to expand the tube against the walls of the mold thereby shaping the receptacle body. The synthetic resin receptacle of this invention comprises a tubular receptacle body 1, a small tube 2 at one end of the tubular receptacle body for filling, a closure cap fitting portion 3 formed at the top end of the vessel body, a diametrically small cut-out portion 5 joining the top end of said closure cap fitting portion and having a small bore, a cap body 4 having reversed-C like shape in a hollow configuration and joining the cut-out portion 5. A projection 7 provided in the center portion of the vertical inner surface of said closure cap body plugs the small bore. Ribs on the inner surface of the cap body and the perimeter of a reduced diameter portion on the top of the receptacle engage each other to form a seal. To use the receptacle, a user detaches the closure cap body from the receptacle body thereby unblocking the small bore allowing contents to be dispensed. To re-seal the receptacle, the closure cap is crowned on the receptacle body forcing the projection 7 to seal the small bore.

REFERENCES:
patent: 3632717 (1972-01-01), Showalter et al.
patent: 5213753 (1993-05-01), Przytulla

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