公开(公告)号：US20180126628A1

公开(公告)日：2018-05-10

申请号：US15863037

申请日：2018-01-05

申请人： Reifenhaeuser GmbH & Co. KG Maschinenfabrik

发明人： Edgar GANDELHEIDT

IPC分类号： B29C55/28 ,  B29C55/06 ,  B29C47/92 ,  B29C47/90 ,  B29C55/02 ,  B29C47/00 ,  B29C47/88 ,  B29C55/12 ,  B29C71/04

CPC分类号： B29C55/28 ,  B29C48/0018 ,  B29C48/002 ,  B29C48/08 ,  B29C48/10 ,  B29C48/90 ,  B29C48/908 ,  B29C48/91 ,  B29C48/914 ,  B29C48/92 ,  B29C55/023 ,  B29C55/06 ,  B29C55/12 ,  B29C71/04 ,  B29C2948/92171 ,  B29C2948/92447 ,  B29C2948/92523 ,  B29C2948/92666 ,  B29K2023/12 ,  B29K2883/005 ,  Y10T428/31504

摘要： In blown film installations, it is known to provide longitudinal stretching of the produced double layer film strip downstream of the draw-off, more precisely downstream of the reversing unit and upstream of the winder. It is also known to stretch the down-drawn film, wherein the film must then be preheated owing to the long cooling path from the draw-off. According to a first feature, the present invention specifies warming the film above the draw-off and then treating it mechanically. The film can thereby be brought with only little energy from a first level of warmth to a temperature level at which it can easily be worked. According to a second feature, the invention specifies providing a tractive force breakdown brake.