Sealing parisons using preblow and contoured sealing surface

Details Sealing parisons using preblow and contoured sealing surface Sealing parisons using preblow and contoured sealing surface

1972-05-26

1976-03-09

Lazarus, Richard Bernard

Plastic article or earthenware shaping or treating: apparatus

Diverse distinct type shaping means

425DIG212, 425DIG213, 425DIG215, 425DIG216, B23D 2303

Patent

active

039429326

ABSTRACT:
An open end parison preform is stretched longitudinally, expanded slightly with preblow fluid, and pinched shut with a contoured sealing member to form a bead along the sealing seam.

REFERENCES:
patent: 2790994 (1957-05-01), Cardot et al.
patent: 2936481 (1960-05-01), Wilkalis et al.
patent: 3163690 (1964-12-01), Scott
patent: 3311684 (1967-03-01), Heider
patent: 3390426 (1968-07-01), Turner et al.
patent: 3509596 (1970-05-01), Shaw et al.
patent: 3592885 (1971-07-01), Goins et al.

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