Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – Forming baffle – bottleneck – or handle
Patent
1993-03-08
1994-02-01
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
Forming baffle, bottleneck, or handle
B29C 4920
Patent
active
052827364
ABSTRACT:
An apparatus for producing blow-molded containers having thickened flanges. The apparatus utilizes movable mold halves having separable side and end components and a stationary central mold element disposed between the movable mold halves to form containers having thickened radial flanges. The movable mold halves and stationary central mold elements together enclose a mold chamber. After the parison of thermoplastic material has been blow-molded to conform to the mold chamber but while the material is still moldable, the movable mold halves simultaneously move together along the axis of the mold chamber to press the material against the stationary central mold element and thereby fold and bond the material onto itself, forming a thickened radial flange on each container. The flanges are each substantially twice as thick as a single layer of blow-molded material. The thickened flanges may also be formed to each include a thickened axial lip of material extending down from the respective radial flanges. After the thermoplastic material has cooled sufficiently to retain its shape, the side components of the mold halves are axially moved apart so that the mold chamber can be opened along its longitudinal axis without damaging the thickened radial flanges or axial lips. By keeping the end components of the mold halves substantially still during the retraction of the side components of the mold halves, the tail of material formed at the junction of the halves of the molding apparatus opposite to the feed end of the blow-molding chamber is preserved, thereby facilitating post-processing handling of the containers.
REFERENCES:
patent: 2977633 (1961-04-01), Breitenstein
patent: 3004285 (1961-10-01), Hagen
patent: 3050773 (1962-08-01), Hagen
patent: 3179508 (1965-04-01), Stapel
patent: 3843005 (1974-10-01), Uhlig
patent: 4117062 (1978-09-01), Uhlig
patent: 4170622 (1979-10-01), Uhlig
patent: 4170623 (1979-10-01), Dubois et al.
patent: 4177934 (1979-12-01), Hammes et al.
patent: 4378328 (1983-03-01), Przytulla et al.
patent: 4409176 (1983-10-01), Jakobsen et al.
patent: 4495135 (1985-01-01), White
patent: 4529570 (1985-07-01), Przytulla
patent: 4640855 (1987-02-01), St. Clair
patent: 4650627 (1987-03-01), Peters
patent: 4713207 (1987-12-01), Udell et al.
patent: 4761130 (1988-08-01), Peters
patent: 4769206 (1988-09-01), Reymann et al.
patent: 4842809 (1989-06-01), Przytulla
patent: 4938680 (1990-07-01), Guarriello et al.
patent: 4972963 (1990-11-01), Guarriello et al.
patent: 5026268 (1991-06-01), Lee
patent: 5035604 (1991-07-01), Rathman et al.
patent: 5044923 (1991-09-01), Przytulla
patent: 5051084 (1991-09-01), Guarriello et al.
patent: 5202078 (1993-04-01), Moore
Chiesa Richard L.
The Lerio Corporation
LandOfFree
Apparatus for manufacturing containers with thickened flanges does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for manufacturing containers with thickened flanges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for manufacturing containers with thickened flanges will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-576004