Detecting and sorting abnormal articles during blow molding

Details Detecting and sorting abnormal articles during blow molding Detecting and sorting abnormal articles during blow molding

1977-03-04

1978-08-01

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 94, 425537, B29C 1707

Patent

active

041043430

ABSTRACT:
In blow molding hollow articles from precursors at molding temperature by distention with fluid under pressure within the cavity of a blow mold, the pressure variation of such fluid beyond preselected limits as measured upstream of the cavity is used to create a signal to reject articles of abnormal quality from the acceptable article flow.

REFERENCES:
patent: 3072959 (1963-01-01), Leeds et al.
patent: 3255716 (1966-06-01), Knoechel et al.
patent: 3374887 (1968-03-01), Parvold
patent: 3577291 (1971-05-01), Uchida
patent: 3677680 (1972-07-01), Etherington
patent: 3728063 (1973-04-01), Langecker
patent: 4042657 (1977-08-01), Ostapchenko et al.

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