| 摘要 |
<p>Apparatus to lay flat and draw off extruded thermoplastic film tubing comprises a reversible table plus an edge guide for the flat tubing, and a fixed final guide to leat it e.g. for reeling. The reversible table evens out the length and consists of a rotating sleeve with part-cylinder-shaped inner and outer walls and a gap between. The inner wall is fixed to the horizontal reversible table and the outer wall to a moving reversible rim round the table. The flattened tubing passes from a guide at one side, round one end of the inner wall into the gap, round the other end of the outer wall and to the final guide.</p> |
