Fluidized bed package

Claim 1

A UNITARY PACKAGE ARTICLE ADAPTED TO BE CONVERTED INTO A FLUIDIZED BED FOR COATING HEATED ARTICLES BY DIPPING THEREIN, SAID ARTICLE COMPRISING AN OUTER PAPERBOARD CARTON, A CONTAINER HAVING AN UPPER AND LOWER CHAMBER WHOLLY ENCLOSED WITHIN SAID CARTON, AND A BAG OF FUSIBLE UNCURED FINELY-DIVIDED RESIN PARTICLES IN THE UPPER CHAMBER OF SAID CONTAINER, SAID CONTAINER COMPRISING A BASE MEMBER, SIDE WALLS CONNECTED TO SAID BASE MEMBER, A FLEXIBLE AIR-PERMEABLE DIAPHRAGM AFFIXED ALONG ITS EDGES TO SAID SIDE WALLS IN SPACED RELATION FROM SAID BASE MEMBER SO AS TO FORM THE UPPER CHAMBER AND LOWER CHAMBER OF SAID CONTAINER, A SPOUT ADAPTED FOR COMMUNICATION WITH SAID LOWER CHAMBER, AND MEANS WITHIN SAID LOWER CHAMBER INTERMEDIATE SAID SIDE WALLS TO SUPPORT SAID FLEXIBLE DIAPHRAGM IN SPACED RELATIONSHIP FROM SAID BASE MEMBER WITHOUT OBSTRUCTING GASEOUS FLOW FROM SAID LOWER CHAMBER THROUGH SUBSTANTIALLY ALL AREAS OF SAID DIAPHRAGM.