| 摘要 |
This invention relates to a process for the production of containers from thin-walled, stretched, seamless tubes of thermoplastic material which comprises introducing a collapsed tube into an open clamp in a manner such that the edge of the tube projects beyond the clamp, closing the clamp, and fusing said projecting edge into a seam adjacent the clamp, the extent of the projecting portion of the tube being sufficient to produce a seam of a thickness of 2 to 10 times the total thickness of the superposed layers of film, and the fusing operation being effected at a temperature such that no degradation of the thermoplastic material results. The invention also includes an apparatus for performing the process. |
