ㆍCycle time reduction for PP homo- and copolymer as well as impact strength improvement
Also for unfilled PP/EPDM.
ㆍEjection temperature of part is approx 10C higher as a result of higher crystallization
temperature and therefore the cycle time is shorter
ㆍHigher level of crystalinity and finer crystal structure
ㆍIncreased crystallization speed
ㆍIncreased stiffness(E-mod) by approx 10%
ㆍImprovement of the low temperature impact strength
ㆍImprovement resistance to creep under pressure
ㆍReduction of sink marks.
ㆍFigure shows the effect of TIMECUT PP on the cooling time for various thicknesses.
ㆍIn practice it means that for 15mm thick PP parts the cycle time could be
reduced from 6to3 minutes. In a part made from structural PP foam with a thickness
of 25mm, the cycle time could be reduced from 7to4 minutes.
ㆍA typical example is a cycle time reduction for 100s to 70s for an office chair with a
wall thickness of 45mm
ㆍIn thin walled parts, cycle time reductions of 10to20% can be obtained. For thick-walled
parts 30-50% shorter cycle times are possible.
ㆍFigure shows that the addition of TIMECUT PP PLUS3.0 dramatically improves
the impact resistance even at -20°C