Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work – Work is organic material
Patent
1977-10-28
1978-11-21
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Reactive gas or vapor treatment of work
Work is organic material
264 98, 425527, 425530, 425531, 425532, 425534, B29C 1707, B29C 1710
Patent
active
041266587
ABSTRACT:
An improved method of blow molding bottles of thermoplastic material wherein intermittent extrusion apparatus is employed to produce bottles with finished necks free of external blemishes, the method including the steps of intermittently extruding tubular parisons from an annular orifice, enclosing the first tubular parison in a mold that has an interior cavity that defines the bottle and also defines a dome radiating outward from the upper end of the bottle neck, immediately blowing the parison essentially to the shape of the cavity, but as an incident to the blowing of the parison and to the interruption of the extrusion, causing the thermoplastic material to be severed at the extrusion orifice, and immediately shifting the mold enclosed article to a shaping station while the article is still at a temperature sufficient for subsequent shaping operations, and at the shaping station finish blowing the article while trimming and at least partially compression-molding the neck.
REFERENCES:
patent: 2128239 (1938-08-01), Ferngren
patent: 3272896 (1966-09-01), Winchester, Jr.
patent: 3325862 (1967-06-01), Mehnert
patent: 3329996 (1967-07-01), Marcus et al.
patent: 3410937 (1968-11-01), Winchester, Jr.
patent: 3531556 (1970-09-01), Mehnert
patent: 3548044 (1970-12-01), Gallay
patent: 3752627 (1973-08-01), Bourgeois et al.
patent: 4007243 (1977-02-01), Rupert
Rupert Samuel J.
Ziegler William E.
Hoover Ball and Bearing Company
Silbaugh Jan H.
LandOfFree
Method of blow molding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of blow molding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of blow molding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2049504