Method and apparatus for manufacturing cups having a lip

Details Method and apparatus for manufacturing cups having a lip Method and apparatus for manufacturing cups having a lip

B - Operations, Transporting

29

C

18/914

B29C 57/12 (2006.01) B29C 53/06 (2006.01) B29C 37/00 (2006.01)

Patent

CA 1205968

- 1 - Abstract: A method and apparatus for manufacturing a cup formed of a thermoplastic resin foamed sheet material and having a lip, the side wall and bottom of the cup being integrally formed, the lip extending outwardly from the mouth portion of the cup and being bent at its end radially inwardly towards the side wall. The method includes forming a rim extending outward from the mouth portion of the cup and having a downwardly extending end, providing a bending furrow on the outer periphery of the side wall, and bending the rim, as it is heated, at the bending furrow. The apparatus comrpises a mandrel block adapted to hold cups and rotatable and axially slidable, a hot blade or cutting blade movable toward the mandrel block and adapted to form a bending furrow for bending the rim, and a lip forming tool having a lip forming groove adapted to be heated.

435772

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