公开(公告)号：US20210016486A1

公开(公告)日：2021-01-21

申请号：US16932232

申请日：2020-07-17

申请人： BRÜCKNER MASCHINENBAU GMBH & CO.KG

发明人： Thomas KNOCHE ,  Maximilian ARMBRUSTER ,  Andreas HOFFMANN ,  Sebastian FRASS ,  Heiko KRIPPNER ,  Steffen KUHNIGK

IPC分类号： B29C48/88 ,  B29C48/08

摘要： An improved method and an improved device for producing a monoaxially or biaxially stretched plastic film are distinguished, inter alia, by the following features:
In the intermediate space (Z) tapering in a wedge shape to the contact line (111, 11′) between the melt film or plastic film (5, 5′) and the roller jacket (9) spaced apart therefrom or the roller surface (9′) spaced apart therefrom of the cooling roller (1, 1′), at least one device for preventing precipitation of condensate (K) in the intermediate space (Z) is used and is designed such that precipitation of condensate (a) on the underside (5a) of the melt film or plastic film (5, 5′) facing the roller jacket (9) or on the roller jacket (9) of the cooling roller (1, 1′) is prevented, and/or a condensate (K) which has precipitated there evaporates or vaporises, and/or condensate disposed in the intermediate space (Z) is transported away, suctioned off, or blown out and/or runs out to the side.

公开(公告)号：US20230311401A1

公开(公告)日：2023-10-05

申请号：US18332040

申请日：2023-06-09

申请人： BRÜCKNER MASCHINENBAU GmbH

发明人： Thomas KNOCHE ,  Maximilian ARMBRUSTER ,  Andreas HOFFMANN ,  Sebastian FRASS ,  Heiko KRIPPNER ,  Steffen KUHNIGK

IPC分类号： B29C48/88 ,  B29C48/08 ,  B29C48/27 ,  B29C48/14

CPC分类号： B29C48/914 ,  B29C48/08 ,  B29C48/274 ,  B29C48/1472 ,  B29C55/12

摘要： A method and device for producing a monoaxially or biaxially stretched plastic film are disclosed in which in the intermediate space (Z) tapering in a wedge shape to the contact line between the melt film or plastic film and the roller jacket spaced apart therefrom or the roller surface spaced apart therefrom of the cooling roller, at least one device for preventing precipitation of condensate (K) in the intermediate space (Z) is used and is designed such that precipitation of condensate (a) on the underside of the melt film or plastic film facing the roller jacket (9) or on the roller jacket of the cooling roller is prevented, and/or a condensate (K) which has precipitated there evaporates or vaporises, and/or condensate disposed in the intermediate space is transported away, suctioned off, or blown out and/or runs out to the side.

公开(公告)号：US20220203659A1

公开(公告)日：2022-06-30

申请号：US17609202

申请日：2020-04-30

申请人： Brückner Maschinenbau GmbH & Co. KG

发明人： Thomas KNOCHE ,  Steffen KUHNIGK ,  Martin ZIER

IPC分类号： B32B27/08 ,  B32B27/32 ,  B32B27/20 ,  H01M10/0525 ,  H01M50/417 ,  H01M50/449 ,  B29C48/00 ,  B29C48/08 ,  B29C48/21 ,  B29C48/91 ,  B29C71/02

摘要： A biaxially-oriented film is disclosed having at least the layers (A) and (B), wherein layer (A) contains a polyethylene of a low molecular weight and layer (B) contains a polyethylene of a higher molecular weight, wherein layer (A) contains at least percent by weight of the polyethylene of low molecular weight, and layer (B) contains at least percent by weight of the polyethylene of high molecular weight and the film has a porosity in the range from 30 to 70%. The film may additionally be provided with a ceramic coating. A method for producing such a film by the Evapore process is disclosed.