Contamination proof package

Claim 1

A SEALED CONTAINER WITH CONTAINER THEREIN COMPRISING A TRAY SECTION FORMED FROM A SINGLE PIECE OF FLEXIBLE SHEET MATERIAL MOLDED TO PRESENT A BOTTOM PORTION WITH STRAIGHT UPSTANDING WALL PORTIONS DISPOSED ALONG THE PERIPHERY OF THE BOTTOM PORTION, SAID STRAIGHT WELL PORTIONS HAVING END EDGES IN CLOSE CONTIGUITY OF DEFINE WITH SAID BOTTOM PORTION A TRAY CAVITY ACCOMMODATING SAID CONTENTS, FLANGES FROM THE SAME SINGLE PIECE OF FLEXIBLE SHEET MATERIAL FORMED INTEGRAL WITH AND LOCATED AT THE TOP EDGES OF SAID WALL PORTIONS WITH THEIR END EDGES IN CLOSE CONTIGUITY, SAID FLANGES PRESENTING SUBSTANTIAL FLAT AREAS ADJACENT TO AND ALL AROUND THE TRAY CAVITY, A CLSOING MEMBER ADHESIVELY SECURED TO SAID FLANGES ALL AROUND SAID CAVITY TO CLOSE THE CONTAINER AND ACCOMMODATE THE CONTENDS THEREIN, AND A THERMOPLASTIC MATERIAL INTERCONNECTING SAID WALL PORTIONS AND SAID FLANGES AT THE JUNCTURES OF THEIR CONTIGUOUS END EDGES AND SEALING THE CONTAINER AT SAID JUCTURES, SAID THERMOPLASTIC MATERIAL FILLING UP COMPLETELY ALL OF THE SPACE AT THE JUNCTURES BETWEEN THE END EDGES OF THE FLANGES AND BEING IN ADHESIVE ENGAGEMENT WITH SAID CLOSING MEMBER IN THE VICINITY OF SAID JUNCTURES, SAID ADHESIVE ENGAGEMENT OF THE CLOSING MEMBER ALONG SAID FLANGES AND WITH THE THERMOPLASTIC MATERIAL FILLING THE SPACES AT THE JUNCTURES THEREOF PROVIDING A CONTAINER DEVOID OF INGRESS CHANNELS ADJACENT THE TOP OF THE CONTAINER THAT WOULD GIVE ACCESS FOR CONTAMINATION TO THE INTERIOR THEREOF.