Method and apparatus for making flat top buns

Details Method and apparatus for making flat top buns Method and apparatus for making flat top buns

1976-10-27

1978-01-17

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 458, 264 462, 264 54, 264165, 264216, 264316, 425 4C, 425 89, 425817R, B29D 702, B29D 2704

Patent

active

040692850

ABSTRACT:
A method and apparatus for making flat topped foamed buns (e.g. polyurethane) in a continuous foaming process. The method comprises the guiding of a continuous thin film tubular member through gathering devices adjacent the cream line at each side of a conveyor, and subsequently guiding the tubular members upward along guides at an angle and rate determined in accordance with the rate of longitudinal travel and the rate of rise of the foaming reactants so as to encourage the sides of the bun into the same height of rise as the center region of the bun. Continuous slitting of the tubular members at the appropriate elevation allows the material thereof to progress longitudinally with the cured bun.

REFERENCES:
patent: 3091811 (1963-06-01), Hackert
patent: 3719734 (1973-03-01), Petzetakis
patent: 3768937 (1973-10-01), Haga et al.
patent: 3809512 (1974-05-01), Blackwell et al.

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