| 摘要 |
<p>A method and apparatus for manufacturing a cup (1) formed of a thermoplastic resin foamed sheet material and having a lip, the side wall (10) and bottom of the cup being integrally formed, the lip extenting outwardly from the mouth portion of the cup (1) and being bent at its end radially inwardly towards the side wall (10). The method includes forming a rim (20') extending outward from the mouth portion of the cup (1) and having a downwardly extending end, providing a bending furrow (50) on the outer periphery of the side wall (10) and bending the rim (20'), as it is heated, at the bending furrow (50). The apparatus comprises a mandrel block (7) adapted to hold cups and rotatable and axially slidable, a hot blade (4) or cutting blade movable toward the mandrel block (7) and adapted to form a bending furrow (50) for bending the rim (20'), and a lip forming tool (6) having a lip forming groove (60) adapted to be heated.</p> |
