Article Archive

December 2006


Past Issues

Troubleshooter

How to Clean a Flashed Hot Manifold-Part Three
We left off last month with all 16 nozzles removed from the manifold (with the tips protected by tape) and still wired to the electric box.

Try These Steps to Fix Injection Molding Problems
Here is a do-it-yourself guide to solving the 16 most common injection molding process problems in a step-by-step fashion.

Starting Up

Your Business In Brief - December 2006
Bayer to Restart Damaged TDI UnitBayer MaterialScience LLC, Pittsburgh, is aiming to restart its damaged TDI unit in Baytown, Texas, next month.

Pricing Update - December 2006
Prices of commodity resins were falling in October and November.

Features

Detroit Fills Up With Lightweight Plastics
To get the attention of newly fuel-conscious consumers, Detroit will need a lot of help from plastics.

Polyurethanes: Fine-Tuning Insulation Foams
Thermal insulation has become ‘eco-friendly,’ but now the challenge is to optimize economics, processing, and performance.

More Filler, Less Resin: Bag Films Load Up to Cut Costs
Filler isn’t a bad word in T-shirt bags and can liners any more.

Keeping Up With Technology

Bigger Presses from Arburg
Three new horizontal presses and a vertical model that are the largest in their respective lines were introduced at the recent Fakuma show in Friedrichshafen, Germany, by Arburg (U.S. office in Newington, Conn.). As reported in October, the company previewed its largest press ever, the 550-ton Allrounder 920 S with hydraulic clamp, 920 x 920 mm tiebar spacing (100 mm larger than the 820 S), 900 mm opening stroke, and a max. daylight of 1950 mm (top photo). Arburg also rolled out the sixth and largest model in its Golden Edition series that commemorates its 50th anniversary of manufacturing presses.

New Tiebarless, Electric, and High-Speed Presses
A brand-new line of small tiebarless hydraulic machines is new from Engel Canada, Guelph, Ont.

Nano-Dispersion on Film Absorbs Infrared
PET window film coated with a 6-micron layer containing 30% to 60% by weight infrared-absorbing nanoparticles retains heat while transmitting visible light.

GE's New Plastic Is a TP Polyimide
Extem is the name of the new thermoplastic polyimide (TPI) family announced this month by GE Plastics, Pittsfield, Mass.

Smaller Valve Gate for Multi-Cavity Molding
A new pneumatic valve-gate system designed for ultra-compact, multi-cavity production of small parts using low-viscosity resins comes from Husky Injection Molding Systems Ltd., Bolton, Ont.

Valve Gate Allows Side Gating
A valve gate for side gating in packaging or medical applications is new from Ewikon Hotrunner Systems of America Inc., East Dundee, Ill.

First Toll MDO Capability
Polymer Packaging Inc.'s new converting plant in Massillon, Ohio, will offer what is believed to be the first toll capability for machine-direction orientation (MDO) in the U.S.

Economical Hydraulic And Electric Presses
An economical line of small hydraulic presses that can be delivered in two to four weeks is new from Demag Plastics Group in Germany (U.S. office in Strongsville, Ohio). The Extra EcQ series from 38.5 to 220 tons offers a choice of two injection units, four screw diameters, and two pump sizes for each clamp size.

PET Has Higher Clarity, Lower AA Levels
Significant improvements in clarity and purity are claimed for a new generation of PET bottle resins that will be commercialized in the first quarter of 2007 by the Voridian Div. of Eastman Chemical Co., Kingsport, Tenn.

Nylon Nanocomposite for Barrier Tanks
A new nylon nanocomposite is offered as a monolayer solution for small fuel tanks and hoses that are now required to meet more stringent fuel-permeation requirements from the State of California and the U.S.

Calibration Tank Controls More Temperature Zones
Custom cooling tanks have been built with two or even three different temperature-control zones in the water bath.

Small Two-Platen Line Goes Larger
A 220-ton hydromechanical, two-platen model has been added to the CX line of presses from Krauss-Maffei Corp., Florence, Ky.

Glass-Filled ABS/Nylon Debuts in Car Interiors
BASF AG in Germany developed its first glass-filled grades of Terblend N ABS/nylon 6 alloy for an interior application on the 2006-2007 GM Opel Zafira Tracker SUV.

High-VA Copolymers For Adhesive Tie Layers
A new line of EVA copolymers designed for use as adhesive tie layers is said to offer advantages over conventional EVAs in specialized coextrusion applications such as food and beverage packaging.

C-Shaped Haul-Off For High-Speed Tubing
A new high-speed haul-off with a C-shaped frame for the tractors and a clear, hinged window on one side allows complete access for easier start-up, especially with delicate profiles, such as five-material automotive gaskets.

Chipless Cutting of Rigid PVC Foam Sheet
An unusual chipless cutter from Baston Extrusionstechnik GmbH in Germany (represented here by Automated Extrusion Tooling and Design, Ramsey, Minn.) provides clean cuts of foamed rigid PVC sheet and boards up to 20 mm thick with a round, toothless, turning blade.

Close-Up on Technology

Adhesion Promotion: Now Plasma-Treat the Resin, Not the Molded Part
A new approach to plasma treating applies the treatment to resin pellets or powder in order to achieve enhanced adhesion of paints, glues, or foamed-in-place urethanes to the molded part.

Long-Glass Thermoplastics and Blow Molding Grab SPE Automotive Awards
Long-glass reinforcements and structural blow molding accounted for four of this year’s nine SPE Automotive Innovation Awards, presented last month in Detroit.

Processor's Edge

High-Tech Thermoformer Takes Aim at Injection Molding
Kintz Plastics is not your typical thermoformer.

CW Brabender
HammerTek
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