|
Equistar has introduced novel linear low and high density PE resins
and low density HMW resins for the first time. These would find
an application in the several high-volume, tough film end-markets
such as merchandise bag, food, and industrial packaging. Petrothene
GA-605 is the LLDPE material with an 0.930 g/cc density and an 0.6
g/10 min. melt index. GA-605 offers excellent stiffness/strength
balance compared to other lower-density LLDPEs, besides offering
excellent optical properties. This would allow it to be used in
single-layer structures, or as a cost-efficient skin layer in co-extrusion
with standard LLDPE or HMW-HDPE. The food grade approved material
also provides for excellent printability with a high gloss (40 per
cent value at 45 degrees centigrade). Both standard, smooth-bore
extrusion systems and grooved-feed extruders with short L/D ratios
process GA-605 quite well, which also has a processing aid. The
product can replace butene-LLDPE, and sometimes, hexane-LLDPE. Alathon
XL3805 is the new HMW-HDPE material with an 0.938 g/cc density and
an 0.05 g/10 min. melt index, made possible by Equistar's bimodal
production capability. This material offers enhanced clarity, softer
feel and improved tear properties compared to traditional HMW-HDPE.
The greatest advantage of XL-3805 lies in it's excellent blending
with HDPE resin properties which would greatly benefit the heavy-duty
industrial sacks sector. The material, that allows for blending
of up to 70 per cent of LLDPE, results in films which combines the
dart impact and tear strength properties of LLDPE providing a stiffness
equal to that of HMW-HDPE.
Previous Article
Next Article
Colines 3 layers cast film extrusion machine
| | | |
