Materials

Materials

PBT & PET Polyester: Part 2 The Performance Factor

All things being equal, PET will outperform PBT mechanically and thermally. But the processor must dry the material properly and must understand the importance of mold temperature in achieving a degree of crystallinity that allows the natural advantages of the polymer to be realized.

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polyolefins

Resin Prices Go Up, Down and Sideways

Tight resin inventories and upward pressure from feedstocks were two factors pushing prices of PE, PP, and PVC higher last month.

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Materials

Octal Expands in PET Pellets for the Americas

WEB EXCLUSIVE: Octal Petrochemicals of Oman (U.S. office in Dallas) has started full production at its new PET plant, the second phase of a capacity expansion targeted specifically targeted for North and South American markets.

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Materials

NASA's 'Mars Rover' Has Many 3D Printed Parts

A Fortus 3D printer from Stratasys, Inc., Eden Prairie, Minn., was used by NASA to help build a next-generation rover capable of supporting two humans on near-earth asteroids and Mars.

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Automotive

Expansions in TP Composite Materials

Polystrand, Inc., Englewood, Colo., is starting up a new and larger production facility for continuous-fiber reinforced thermoplastic composites in Montrose, Colo.

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Commodity Resins

PE , PS , PVC Prices Rise While PP Tabs Dip

Prices of PE and PS rose in August, and PVC prices were set to move up this month, while PP prices did the reverse.

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polyolefins

Commodity Resin Prices Still Dropping - July 2012

Lower feedstock costs, ample material availability, and overall sluggish demand has driven prices down for the four commodity thermoplastics.

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Use MFR Cautiously with Filled Materials

If melt flow rate tests are used to evaluate the effect of processing on the average molecular weight of the polymer, the applicable rules must consider the contribution of the filler to the test result.

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Packaging

On-Line Modeling Tool for Easy Tie-Layer Selection

WEB EXCLUSIVE: DuPont Packaging, Wilmington, Del., has introduce the second in a series of online predictive modeling tools that promises to simplify tie-layer material selection, a critical step in multilayer packaging design.

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Resin Prices Still Heading South

A sharp decline in U.S. energy prices and tabs for all key feedstocks, along with dismal-to-lackluster domestic and global demand, have brought significantly more attractive pricing for the four commodity thermoplastics and downward movement for four high-volume engineering resins.

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