Apparatus for molding a head end an a tubular container

Details Apparatus for molding a head end an a tubular container Apparatus for molding a head end an a tubular container

1987-04-09

1989-05-30

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Opposed registering coacting female molds

249 88, 249 91, 249 93, 4251261, 425127, 4251291, 425135, 425393, 425395, 425398, B29C 3314, B29C 3316, B29C 3910, B29C 4533

Patent

active

048346381

ABSTRACT:
A tube container molding apparatus in which a cylindrical tube is inserted into a split mold in its closed state so that the end section of the tube comes into contact with a cavity face of the split mold. A core is then advanced to fit into the tube from its rear end, and finally a resin melt is introduced into the cavity formed by the cavity face of the split mold and the end face of the core.
When the resin melt is injected into the cavity, a tube holding piece pushes the tube against the core to prevent the tube from being drawn out of the cavity.
Midway during the advance of the core into the tube, the tube is held by the tube holding piece and the further advance of the tube is made together with the core. Thus, the forward end section of the tube is bent inward to a prescribed width.

REFERENCES:
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patent: 2883706 (1959-04-01), Quinche et al.
patent: 2994107 (1961-08-01), Quinche
patent: 3260777 (1966-07-01), Brandt
patent: 3313875 (1967-04-01), Magerle
patent: 3356263 (1967-12-01), Monroe
patent: 3475786 (1969-11-01), Pearson
patent: 3629385 (1971-12-01), Badavas et al.
patent: 4496513 (1985-01-01), Ishikawa et al.
patent: 4518554 (1985-05-01), Hazakeyama et al.
patent: 4525318 (1985-06-01), Reil et al.

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