3 layers BRUCKNER BOPP / BOPET extrusion machine

Biaxially oriented polypropylene (BOPP) and Biaxially oriented polyester (BOPET) are commonly produced in tender-frame lines. In these lines material is melted through a flat extrusion die (T-die) and solidified onto a cooled roller. Material is then stretched in machine direction in an MDO. Thereafter material is stretched in transversal direction in a TDO. These processes deliver a molecule orientation in both axes, this enhances many of their properties, particularly the mechanical, impact, barrier and optical properties.

Machine Code BO63
Manufacturer BRUCKNER
Year 1997
Number of layers 3
Overhaul/renovation 2016
Film structure A-B-C
Material BOPP
Output 3600 KG/H
Width (mm) 8200
Extruder 1 Description Cascade main extruder 250 / 300 diam 250 mm L/D 21 Drive 2 x 700 Kw DC motor - Heting zones total 8 as follow s1 heating zone for Feeding 30,5 KW, 6 sections for Barrel total 183 Kw , 1 for flange
Extruder 2 Description 1x 100 L/D 32 - Drive 117 Kw DC motor total 8 heating zone s1 for feeding , 6 for Barrel, 1 flor flange -Melt pump and Polymer filter
Extruder 3 Description 1x 100 L/D 32 - Drive 117 Kw DC motor total 8 heating zone s1 for feeding , 6 for Barrel, 1 flor flange-Melt pump and Polymer filter
Head description 3 layer Die 7 heating zones - Automatic die lip adj by 40 quick acting bolts push-pull- Continuous control of bolt heaters included in IPC system
Die width 1140 mm Die gap 1,8- 3,5 mm
Thickness controll system EBERLEIN thickness control with Thermo Fischer upgraded control panel RM190 on TUT and before MDO inlet.
Chill roll unit Casting machine 280 WL 120 Working width 1200 mm- movable by 1 mt in machien direction- Double shell chill roller hard chrome plated and polished, with spiral channels diam. 2800 mm width 1400 mm - Pinning device- Coolimg capacity 1.360.000 KJ /h
MDO description Roll width 1300 mm working width 1100 mm 2 stretchinbg gaps- stretching ratio 1: 1 - 1:8 - stretching section composed by 6 stretching rollers diam 150mm- 1 Nip roller preheating , 3 nip roller /stretching - 2 Annealing rollers diam 614 mm 1 nip roller for annealing , Ultrasonic sensor for Film break detector -Drive 28 Kw Dc for preheating and stretchicn roller slow section ( 1-2 ), 136 Kw DC for stretching roller fast section 3-4 , 136 Kw DC for stretching roller fast section 5-6
TDO description TDO type 63G 22,5 EP - Feeding width 950- 1100 mm- Max stretch width 9,5 m- Exit width range 7,8 - 8,6 m. -Total TDO length 64,5 m -5 preheating zones, 5 heating zones in stretching section , 5 annealing zones - Chain track system mod. FOK4.4.4 MAX Speed 375 m/ min . 2 continuos bars in vertical plane-1 in horizontal plane- Hydraulic positiong system for inlet chain tracks -Hydraulic chain tensioning system- Chain and clips mod FOK 4.4.4. -Sliding chain system with double L shaped runners Pitch 60mm - Sprocket diam 955mm - Clip cooling - Gas Heatimng system for TDO -
Corona treatment 3 Corona treater
Flame treatment yes one station Flame teratment station with Nip Roller and treater nip roll diam 430 mm, treater roll diam 450 mm
Pull roll unit Pull roll stand and trim slitting station Thickness gauge unit , treatment stations - Film width after trimming 8,2 m
Rewinder description Automatic turret winder after Pull system
Slitter ATLAS Primary Slitter Rewinder with new system packed in storage room. PLC, cable, motor, automatic system upgrade, blade positioning etc.
Additional information 4 Grinder, 1x offline, 1x online, 2x edge trim RAM Camera inspection system on TUT FOK chain spare available. Kyron Soder Granulate feeding System Additional rewinder for MO film between MDO and TDO 2x hot oil boiler for MDO (one is the new one (built in 2016) Chillers, pumps and towers of cooling system

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