PVC
EXTRUSION: Why Barrier Screws & Rigid PVC Don’t Always Mix
RPVC’s somewhat unusual melting mechanism makes it unsuited to traditional barrier type designs.
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EXTRUSION: Processing Rigid PVC? Know Your Rheology
Before choosing and sizing extruders for running rigid vinyl, it is wise to bone up on the viscosity behavior of the material.
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Prices Firmer for PE, PP, Looser for PS, PVC
PE and PP are expected to hold firm or head upwards, but it’s a mixed bag for PS and PVC prices.
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Prices of Commodity & Engineering Thermoplastics Trend Flat to Lower
Prices of PP, PS drop as PE, PVC are flat or softening. Ditto for ABS, PC, and nylon 6 and 66.
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Price Trend Still Flat to Lower
Prices for three of four commodity resin trending down. PE relatively stable.
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Prices Up, Except for PP
Prices of PE, PS and PVC were on the way up last month, while PP prices could be headed in the other direction.
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Commodity Resin Prices Up, Engineering Resins Steady
Strong year-end demand, somewhat tighter supplies of polyolefins, and a spike in feedstock prices with the possibility of more to come for PS, PVC and PP, have already brought higher prices to commodity resins, and continuing upward pressure will likely generate further hikes. Meanwhile, despite strong demand in the automotive market, prices of the four largest-volume engineering resins have been flat or slightly lower.
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