Article Archive

Close-Up on Technology

Materials Additives & Blends Take PLA Upscale
The second conference on biopolymers hosted by NatureWorks testified to the burgeoning interest in this new field of plastics.

Dryers Use Less Energy to Dry PET
Novatec Inc., Baltimore (novatec.com), is introducing two patented dryer control technologies intended to cut energy costs for processors of PET.

Features

Getting Into LSR: Part II--Chosing an Injection Machine
The criteria for selecting a liquid silicone rubber injection molding machine are very similar to selecting a machine for standard thermoplastic injection molding, with several key differences.

Injection Molding PHA Bioplastics: Validating Moldability for Paper Mate Pens
As part of the commercialization process for Mirel PHA bioplastics, it became necessary to validate the injection molding process for a high-profile consumer products launch.

Tips and Techniques: Compounding 10 Ways to Improve Twin-Screw Compounding Performance
There are many techniques known to operators and plant engineers for increasing the performance of a twin-screw compounding extruder.

On-Site: Progressive Injection Molder Pioneers in Thermoforming IML
When you’re a successful injection molder with more than 40 years under your belt and more than 50 presses producing 1.8 billion containers and lids for food-packaging containers annually, what do you do when you feel the time is right to expand?

Keeping Up With Technology

Glass-Filled PP Beats Nylon in Air Intake Manifolds
WEB EXCLUSIVE: Glass-reinforced nylon 6 has been the material of choice for replacing metal in automotive air-intake manifolds.

First Flexible PPA Replaces Metal Tubing Under the Hood
WEB EXCLUSIVE: Rilsan HT, a polyphthalamide (PPA) high-temperature thermoplastic, exhibits a flexibility previously unknown in this material family.

Long-Glass PP Sheet for Thermoforming
WEB EXCLUSIVE: Ensinger’s Penn Fibre Div., Bensalem, Pa., has just launched thermoformable long-glass reinforced PP sheet.

Electric Hybrid with Accumulator
Negri Bossi, Inc., New Castle, Del., has expanded its new Janus Series electric/hydraulic hybrid line with additional models that offer higher performance.

Conical Twin-Screw for Wood-Plastic Newcomers
Aimed at wood-plastic composites, the fi berexK72 conical twin-screw extruder series from Battenfeld-Cincinnati in Germany (represented in North America by American Maplan, McPherson, Kan.), offers an output range from 200 to 600 lb/hr, making it possible to extrude a great variety of different profiles with only one machine—an attribute frequently demanded by newcomers.

New Materials for Aircraft Interiors
WEB EXCLUSIVE: Five new sheet and pellet materials for aircraft interiors are said to offer new opportunities for weight reduction.

Improved PC for Optical Disks
WEB EXCLUSIVE: Newly formed Styron LLC (formerly part of Dow Chemical) will replace its Calibre 1080 DVD polycarbonate for optical media with an improved grade, Calibre 1060 DVD. (The changeover has already been made in Europe.) The new version is said to match the high optical quality and flow (58 MFR) of the earlier grade but adds greater ductility and toughness to provide better protection from breakage.

Chinese TPEs Arrive
Alliance Polymers and Services LLC, Romulus, Mich., a year-old distributor of thermoplastic elastomers, has introduced an initial slate of at least 20 SEBS-based Maxelast TPE compounds produced by Polymax Elastomer Technology Co., Ltd. in Nantong, China.

Here’s Another Biopolymer Ballpoint Pen
WEB EXCLUSIVE: S.R. Promocionais Ltda in Brazil will produce Eko BIO compostable pens from a blend of polylactic acid (PLA) biopolymer and plant starch.

Low-Melting PET for Heat-Seal Films
WEB EXCLUSIVE: Two clear amorphous PET copolymers have been introduced to meet the need for low-melting heat-seal layers in packaging films.

Colorful Carbon-Fiber Compounds
WEB EXCLUSIVE: Carbon fibers can add strength, stiffness, and static dissipation (ESD) or electrical conductivity to thermoplastics, but they also tend to color them black.

PVC Cable Compounds for Wind Turbines
WEB EXCLUSIVE: Two new Apex PVC cable jacket compounds from Teknor Apex Co.’s Vinyl Div., Pawtucket, R.I., withstand harsh weather in wind turbine and other outdoor control and power cable applications.

Blow Molding: PET Reheat Machine for Small to Medium Outputs—August 2010
W. Amsler Equipment introduced a new reheat stretch-blow machine for low- to medium-volume PET bottle requirements.

Extrusion: Conical Twin-Screw for Wood-Plastic Newcomers—August 2010
Aimed at wood-plastic composites, the fi berexK72 conical twin-screw extruder series from Battenfeld-Cincinnati in Germany (represented in North America by American Maplan, McPherson, Kan.), offers an output range from 200 to 600 lb/hr.

Injection Molding: Electric Hybrid with Accumulator—August 2010
Negri Bossi, Inc., New Castle, Del., has expanded its new Janus Series electric/hydraulic hybrid line with additional models that offer higher performance.

Materials: Glass-Filled PP Beats Nylon in Air Intake Manifolds—August 2010
WEB EXCLUSIVE: Glass-reinforced nylon 6 has been the material of choice for replacing metal in automotive air-intake manifolds.

Materials: First Flexible PPA Replaces Metal Tubing Under the Hood—August 2010
WEB EXCLUSIVE: Rilsan HT, a polyphthalamide (PPA) high-temperature thermoplastic, exhibits a flexibility previously unknown in this material family.

Materials: PVC Cable Compounds for Wind Turbines—August 2010
WEB EXCLUSIVE: Two new Apex PVC cable jacket compounds from Teknor Apex Co.’s Vinyl Div., Pawtucket, R.I.

Materials: Colorful Carbon-Fiber Compounds—August 2010
WEB EXCLUSIVE: Carbon fibers can add strength, stiffness, and static dissipation (ESD) or electrical conductivity to thermoplastics.

Materials: Biodegradable Cellulosic Resins Similar to PS—August 2010
WEB EXCLUSIVE: FkuR Plastics Corp., Cedar Park, Texas, a newly established office of a German supplier of biodegradable polymers, is offering Biograde cellulose acetate blends with higher heat resistance than most of today’s biopolymers.

Materials: Improved PC for Optical Disks—August 2010
WEB EXCLUSIVE: Newly formed Styron LLC (formerly part of Dow Chemical) will replace its Calibre 1080 DVD polycarbonate for optical media with an improved grade, Calibre 1060 DVD.

Materials: Low-Melting PET for Heat-Seal Films—August 2010
WEB EXCLUSIVE: Two clear amorphous PET copolymers have been introduced to meet the need for low-melting heat-seal layers in packaging films.

Materials: New Materials for Aircraft Interiors—August 2010
WEB EXCLUSIVE: Five new sheet and pellet materials for aircraft interiors are said to offer new opportunities for weight reduction.

Materials: Long-Glass PP Sheet for Thermoforming—August 2010
WEB EXCLUSIVE: Ensinger’s Penn Fibre Div., Bensalem, Pa., has just launched thermoformable long-glass reinforced PP sheet.

Materials: Chinese TPEs Arrive—August 2010
Alliance Polymers and Services LLC, Romulus, Mich., a year-old distributor of thermoplastic elastomers, has introduced an initial slate of at least 20 SEBS-based Maxelast TPE compounds produced by Polymax Elastomer Technology Co., Ltd. in Nantong, China.

Tooling: New Mold Components for Releasing Undercuts—August 2010
Two new series of mold components for undercut parts were introduced at the fi rst PDx/Amerimold show this spring in Cincinnati, sponsored by Moldmaking Technology and Time Compression magazines.

Know How

Extrusion: Take Care of Your Rolls So They Can Play Their Role
In the sheet extrusion business, one of your most important manufacturing assets is your cooling rolls.

Tooling: The Science of Profile Die Balancing
In our last column, we discussed the five things profile extruders need to know about profile die design—proper land length, land-length ratio, drawdown, considerations for sensitive materials, and decompression.

Injection Molding: The Basics of Machine Evaluation, Part III
In the last two issues, we started defining some basic tests to ensure your injection molding machine is working properly.

Starting Up

Industry & Technology News
Bemis Molds Chair Out of 111 Recycled Coke Bottles - Styron Makes Its Official Debut - At Spartech, a Decade of PLA Sheet Pushes the Boundaries.

Column

Wood on Plastics: Building a Foundation for Construction Market Recovery
Now that the first half of 2010 is behind us, it appears safe to make two observations about the latest trends in the residential construction sector.

Resin Buying Strategies - August 2010: Commodity Resins Still Falling
The steady decline in commodity resin prices continued last month and into August.

The Practical Processor: August 2010
Your Processing Questions Answered

Processor Strategies - Cashmere Molding Inc.: ‘Compete Globally, Produce Locally’
What kind of a company increases sales by an average of 60% annually, including a 10% gain last year, in the depth of the Great Recession?

Three Paths, One Theme: Innovation
Innovation.

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