| 摘要 |
A THERMOPLASTIC CAN (1) COMPRISING A THERMOPLASTIC BODY (2) HAVING A DISC LIKE TOP (3) MOULDED AS ONE WITH A TUBULAR ELEMENT (5) DEFINING THE SIDES OF THE BODY AND EXTENDING DOWNWARDLY FROM THE PERIPHERAL PORTIONS (4) OF THE TOP; AN OPENABLE PORTION ASSOCIATED WITH THE TOP TO FACILITATE USE OF THE CAN CONTENTS BY AN END USER; A THERMOPLASTIC BASE MEMBER (7) HAVING AN EXTERNALLY DIRECTED PROTRUSION (8) ENGAGED IN A RELATIVELY THIN WALLED RECESS (9) IN THE RADIALLY INTERNALLY FACING LOWER PERIPHERAL PORTION OF THE BODY THEREBY EFFECTING A PERMANENT SEAL AT THE BASE OF THE CONTAINER AFTER FILLING THEREOF; THE RESISTANCE TO PERMANENT INWARD DEFORN1ATION OF THE EXTERNALLY DIRECTED PROTRUSION (8) EXCEEDING THE RESISTANCE TO PERMANENT OUTWARD DEFORN1ATION OF THE THIN WALLED RECESS (9); THE WALL THICKNESS OF THE LOWER PERIPHERAL PORTION (6) OF THE BODY BELOW THE THIN WALLED RECESS (9) EXCEEDING THAT OF THE THIN WALLED RECESS (9).FIG. 3
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