polymer processing

Material Dynamic viscosity, Pa·s Air (temp. 20 0 C) 10 -5 Water (temp. 20 0 C) 10 -3 Mercury (temp. 20 0 C) 1,5·10 -3 Aluminum (temp. 700 0 C) 1,1·10 -3 Zinc (temp. 700 0 C) 1,7·10 -3 Iron (temp. 1400 0 C) 6·10 -3 Blood (temp. 37 0 C) 10 -2 Oil 10 -2 -10 0 Honey 10 1 Melted polymers 10 2 -10 4 Cake 10 3 -10 5 Cheese 10 7 -10 8 asphalt 10 8 Melted glass (temp. 500 0 C) 10 12 Glass 10 40

Reifenhäuser supplied in 2005 a 35 m high 3-layer blown film line . Essential components of the new wide film extrusion line are: - gravimetric dosing system for each extruder, - 2 extruders, 150 mm screw diameter, - 1 extruder, 200 mm screw diameter, - 3-layer blown film die with internal bubble cooling and 2200 mm die diameter ensuring a high production capacity, - high-performance air ring KRF 2200, - film guiding system with 4 ultrasonic sensing arms, collapsing assembly and side gusseting unit, - 8-ply folding station for C-type folding enabling simple handling of the oversized film widths in greenhouse construction, - fully automatic short-length winder FAC 4200 with bobbin magazine, adjustable for winding different film lengths and to cope with extremely short reel changing cycles, - REIcofol automation system for process control, including film measuring station and indication of side gusseting depth. The new 3-layer blown film line is designed for an extremely high producti...

All you have to do is one click on the picture and then experiment with available options Polyethylene, PE Polypropylene, PP Polyvinyl chloride, PVC

Polypropylene is thermoplastic polymer consisting mainly of propylene come from a low pressure process based on catalysts and have generally linear polymer chain. There are three general types of polypropylene: homopolymer , random copolymer and impact or block copolymer . Random copolymer is produced by statistical insertion of units mainly ethylene . Through this, the glass transition temperature and melting point are lower than in homopolymer . Additionally we receive better mechanical properties in the temperature below zero (e.g. impact) and optical (transparency). Processing of random copolymer by injection molding considering properties mentioned above characterizes lower temperature (lower cycle time) and pressure. Application, e.g. thin wall and transparent products on the other hang thick wall, because of lower crystallization ratio (amorphous structure).

The story of Ponar Zywiec The successor of the machine factory with more than 100 years of traditions in construction of different kinds of machines, among them also machines with hydraulic drive, has specialized in construction of injection moulding machines and hydraulic presses for plastics and rubbers for above 30 years.