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Extrusion of PP and HCR blends
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Hydrocarbon resins can be extruded with polypropylene resin (PP) directly from a dry blend to save tolling costs in a masterbatching process. A glassy, lowmolecular-weight polymer, HCR is compatible with a wide range of polymers. When used in film, it significantly improves barrier properties, clarity, stiffness, and many other attributes. Because of its low softening temperature and low viscosity, most applications use HCR masterbatch to avoid extrusion instability and poor mixing. In most applications, up to 15 percent to 20 percent of HCR are used in order to optimize the final properties. If an extrusion system can be developed to directly feed the HCR to the extruder, a significant cost saving can be achieved.

This article appears in the June 2011 issue of SPE's Plastics Engineering magazine.
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Faster thermoplastic polyurethane crystallization with an organic nucleating agent
SPE Plastics Research Online    Share    Share on FacebookTwitterShare on LinkedinE-mail article
A combination of rubber-like properties and easy processing makes thermoplastic polyurethanes an important class of materials. Due to their high toughness and good abrasion resistance, polyester-based TPUs are extensively used in the automotive, footwear and furniture industries. Reasonably low crystallization time is very important for acceptable productivity for some applications, such as footwear. Beside this, the crystallization process can noticeably affect morphology and, as a consequence, the physical, chemical and mechanical properties of semicrystalline TPUs. More

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Thermally stable unsaturated polyester composites
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The use of polymeric materials for structural applications such as automobile body panels and airplane ducting has increased in recent years, placing greater demands on performance. The advantage of these materials over metal is their high strength-to-weight ratio. Indeed, replacing metals with polymers lowers transportation costs and increases mobility for products generally, and, in the case of automobiles and aircraft, raises their fuel efficiency. Such applications, which require high thermal stability and robust mechanical properties, usually rely on epoxies. More



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PLASTICS INDUSTRY NEWS


Chemist works on polymers to fight E. coli
UPI    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Two different materials, both equally effective against E. coli, are being developed by a University of Houston team, a university polymer chemist said. Rigoberto Advincula said a graphene material proved to be an effective anti-microbial to kill or inhibit the growth of E. coli, the Texas university reported in a release. More

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BASF expects high demand for engineering plastics
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BASF (expects consumption of engineering plastics — important products for the German chemicals company — to return to pre-crisis levels in Europe this year. "In comparison to the crisis year of 2009, demand rose by more than 30 percent in 2010. For 2011 as well, we are counting on double-digit growth," the head of BASF's business unit Engineering Plastics Europe, Willy Hoven-Nievelstein, said, adding this resulted in a move to levels reached before the economic crisis. More

Resin firms say China's 5-year plan favors plastics
Plastics News    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The emphasis on energy efficiency and boosting domestic demand in China's new five-year plan plays to the strengths of plastics, according to executives at materials suppliers, with many stepping up investments in research and development to handle increasingly sophisticated local demands. More

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UV-curable plastic makes self-healing sensor possible
Plastics Today    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Sensors that measure the strain or forces exerted on materials in everything from airplanes to civil infrastructure have one vital flaw; they can break under stress rendering themselves useless but not necessarily the material they were monitoring. Researchers have overcome this by designing a sensor that can measure strain in structural materials and is capable of healing itself, allowing for continued collection of data that can help determine structural safety in the wake of earthquakes, explosions or other unexpected events. More

Unique Value From Innovative Resins

UPES® is a family of innovative, interpolymer resins (polyethylene and polystyrene) that simplify compounding, enhance compatibility with polymers systems and broaden the processing window of most polyolefins. MORE


US wholesale prices rise 0.2 percent on plastics, fuel, textiles
Bloomberg    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Wholesale costs in the U.S. rose more than forecast in May, led by higher prices for fuel, plastics and the fastest rise in 30 years for apparel and textile costs. The 0.2 percent increase in the producer-price index compares with the 0.1 percent median estimate of economists surveyed by Bloomberg News, Labor Department figures showed in Washington. The so-called core measure, which excludes volatile food and energy costs, increased 0.2 percent, matching projections. More



Plastic compounds target lead in radiation shielding
Plastics Today    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Lead's time in medical devices is quickly running out and opportunistic plastics suppliers are jumping into the void being left by out-of-favor toxic metal to offer polymer compounds that offer equivalent radiation shielding. More

Silver antimicrobial combats swine flu virus
European Plastics News    Share    Share on FacebookTwitterShare on LinkedinE-mail article
A university-supported study has demonstrated that silver antimicrobial additive technology can be effective against the HIN1 "swine" influenza virus. Research showed that treating a polymer laminate material with BioCote antimicrobial can effectively wipe out the virus. More



Waste Expo: Plastics recycling has room for growth
Recycling Today    Share    Share on FacebookTwitterShare on LinkedinE-mail article
During the 2011 Waste Expo, held May 9-12 in Dallas, attendees at a session titled "Plastics Recycling Markets: Room for Growth" heard about how demand for many post-consumer plastics grades is much greater than the supply being generated. Tamsin Ettefagh, vice president of Reidsville, N.C.-based Envision Plastics, said that Envision recycles high-density polyethylene and uses it to make post-consumer resins that are used in packaging and other products. More

Used Equipment Provides Great Opportunities

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Saint-Gobain Performance Plastics completes significant investment in manufacturing capabilities
Global Solar Technology    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Saint-Gobain Performance Plastics celebrated the completed expansion of its Worcester, Mass., extrusion facility. The investment more than doubles Saint-Gobain's fluoropolymer (ETFE and FEP) and ethylene vinyl acetate (EVA) film manufacturing capability to produce films for photovoltaic (solar) products. More

Metal binding polymer shows remediation promise
Australian Journal of Mining    Share    Share on FacebookTwitterShare on LinkedinE-mail article
A metal binding polymer product, developed at the University of Queensland in Australia, is showing promise in early trials. When added to contaminated soils the product binds to toxic metals, potentially making vegetation cover safe for cattle to graze. More

NEW PLUG ASSIST SELECTION GUIDE
CMT Materials, Inc, the world’s leading manufacturer and supplier of syntactic foam plug assist materials, has developed a New Selector Guide filled with specifications, recommendations and tips to aid in the development of thermoforming plug assists. Visit www.cmtmaterials.com for downloadable PDF formats or call 508-226-3901 for a print version. more


Novamont and Polimeri Europa to construct bio-based chemical complex
Azom    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Novamont, a producer of biodegradable plastics, has formed a new joint venture with Polimeri Europa, a subsidiary of Eni Group, to construct an advanced bio-based chemical complex in Porto Torres, Italy. Matrica, the new Italian joint venture, will operate the bio-based chemical complex. More


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