| 摘要 |
<p>Cutting, creasing, folding and thermoforming blanks of thermoplastic sheet in a single group of operations to produce panels which can fold and interlock to make an open-topped container, with louvred side vents if desired. Text implies fabrication of expanded polystyrene containers for transporting foodstuffs. Units may travel relatively flat, form a rigid container without independent fastenings.</p> |
