New developments for biaxially stretched polyolefin films with linear motor driven simultaneous stretching

摘要

The simultaneous stretching technology with linear motors provides new possibilities for the production of biaxially stretched polyolefin films, e.g. BOPP and BOPE shrink films. The development of new film types is done in the first stage on a discontinuous frame stretcher on a laboratory scale and from there, transferred in a continuous process onto a pilot line. This development environment represents the basis for the transfer to production scale and has meanwhile been realized on several large scale production lines. The given examples shall outline the outstanding properties of shrink films achieved wit h this technology.