The present invention is directed to a method and apparatus for manufacturing a tray having an integral purge juice trap. A particularly important step in the method is adhering a border area of a perforated thermoplastic sheet to a raised shoulder area of a tray. Preferably, this step is accomplished...http://www.google.sh/patents/US4552600?utm_source=gb-gplus-sharePatent US4552600 - Method and apparatus for manufacturing a purge trap tray
