Repak RE20 - Description of the Machine

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Contents
3 Description of the machine ............................................................................... 26
3.1 Operation ....................................................................................................................... 26
3.2 Description of machine frame ........................................................................................ 27
3.3 Description of bottom film unwind unit ........................................................................... 28
3.3.1 Film tracking adjustment ...................................................................................... 28
3.3.2 WP-400 bottom unwinder ..................................................................................... 29
3.3.3 CK-400 bottom unwinder...................................................................................... 30
3.3.4 Jumbo bottom unwinder ....................................................................................... 31
3.4 Description of forming station ........................................................................................ 32
3.4.1 Forming station top heating .................................................................................. 33
3.4.2 Forming station with pre-heating .......................................................................... 33
3.4.3 Forming station with plug assist and pre-heating ................................................. 33
3.5 Description of loading area ............................................................................................ 34
3.5.1 Product support bars ............................................................................................ 34
3.5.2 Confirmation station ............................................................................................. 36
3.5.3 Loading mask ....................................................................................................... 36
3.6 Top film unwinding unit .................................................................................................. 38
3.7 Photocell and film brake ................................................................................................. 38
3.7.1 Usage and application of printed topweb ............................................................. 39
3.7.2 Explanations of notions ........................................................................................ 39
3.7.3 Print mark ............................................................................................................. 40
3.7.3.1 Contrast: ............................................................................................... 40
3.7.3.2 Division, dimensions. ........................................................................... 40
3.7.3.3 Print mark integrated in print design. ................................................... 40
3.7.3.4 Adhesive tape seam. ........................................................................... 40
3.7.4 Tolerance of print marks by using film brake ....................................................... 41
3.7.4.1 Non-stretchable packaging material. ................................................... 41
3.7.4.2 Moderate stretchable packaging material. ........................................... 41
3.7.4.3 Good stretchable packaging material. ................................................. 41
3.7.4.4 Highly stretchable packaging material. ................................................ 41
3.8 Description of sealing station ......................................................................................... 42
3.9 Cross cuttings ................................................................................................................ 43
3.9.1 Flexible film cutter ................................................................................................ 43
3.9.1.1 Method of operation ............................................................................. 44
3.9.1.2 Knife forms ........................................................................................... 44
3.9.2 Film puncher ......................................................................................................... 46
3.9.2.1 Method of operation ............................................................................. 46
3.9.2.2 How to adjust the puncher. (fig. 3.18) .................................................. 47
3.10 Complete-cut puncher .................................................................................................... 48
3.10.1 Method of operation ............................................................................................. 48
3.11 Longitudinal cutters ........................................................................................................ 49
3.11.1 Rotary knives ........................................................................................................ 49
3.11.2 Squeezing knives ................................................................................................. 50
3.11.2.1 Method of Operation ............................................................................ 50
3.11.3 Roll and shear strip cutter .................................................................................... 51
3.11.3.1 Limitations ............................................................................................ 51
3.11.3.2 Method of Operation ............................................................................ 51
3.11.4 Roll and shear line cutter...................................................................................... 52
3.11.4.1 Limitations ............................................................................................ 52
3.11.4.2 Method of Operation ............................................................................ 52
3.11.4.3 How to exchange the cutting units ....................................................... 52
3.12 Discharge conveyor belt................................................................................................. 53
3.13 Control cabinet ............................................................................................................... 54
3.14 Drive gear ....................................................................................................................... 55
3.15 Film edge trim removal ................................................................................................... 56
3.15.1 Film edge trim suction unit ................................................................................... 56
3.15.2 Film edge trim rewinder ........................................................................................ 57
3.15.2.1 Method of Operation ............................................................................ 57
3.15.2.2 Routing of edge trim ............................................................................. 57