Archive for June, 2009

World’s First PLA Production Foam Extrusion Die Developed

Wednesday, June 24th, 2009

Plastic Engineering Associates Licensing, Inc. is pleased to announce the development of the world’s first PLA Production Foam Extrusion Die.

The special PLA foam die developer is Jim Fogarty (Chem. Eng., WPI 1961). Jim has been designing foam extrusion dies since the early 1960’s, mainly for polystyrene foam. Jim is also the inventor of Turbo-Screws® technology foam feed screws.

“The market needs a foam extrusion die for PLA. All of the foam dies in the industry have been made for polystyrene foaming and as most people in the foam polystyrene industry know, PLA is definitely not polystyrene. It is such a viscous polymer and furthermore, has such low shear thinning properties that it just made good sense to develop a die specifically for PLA. We will be offering the die to the market in conjunction with our Turbo-Screws® technology feed screws for PLA foam production.” Fogarty stated.

Plastic Engineering Associates Licensing, Inc. is a Florida corporation headquartered in Boca Raton, Florida. It owns the exclusive patent rights to 7 U.S. and over 50 foreign patents on the Turbo-Screws® technology. For more information visit www.turboscrews.com and www.pea.cc

Premiere: Gravimetric Dosing of Liquid Colors

Tuesday, June 23rd, 2009

Novosystems WB 4000 dosing system with an even broader range of applications: from the smallest amounts right up to high performance extrusion with eccentric screw technology

Seevetal, 23th June, 2009: liquid colors continue to be very popular as material suppliers make full use of energy and polymer cost savings potential. In addition to saving money, liquid colors offer the additional production benefits of high color consistency, low dosing amounts and rapid color changes. Novosystems says that due to these advantages, producer demand for liquid colors continues to rise for injection molding, extrusion and PU manufacture. Reason enough for Novosystems to radically redevelop their whole program of mixing and dosing technology - resulting in a completely new system.

The basis of the new system is the WB4000 dosing device. This makes reliable and clean feed of liquid colors in a closed system possible. Easy calibration enables color changes in seconds, not possible in the same way with Master batch. In addition to the use of a peristaltic pump, the WB4000 also features an eccentric screw head option, greatly extending dosing range. This allows for very large dosing volumes of up to 60 l/hr as required for extrusion processes. What’s more, the eccentric screw head makes technical operation up to pressures of 40 bars possible. Material delivery via eccentric screw results in a very linear feed for the whole range of the feed volume and highest dosing accuracy. A further benefit for special requirements of commercial operation is the delivery of color via pipes up to distances of 8 – 10 meters. This is useful when color containers are not set up directly next to the manufacturing cell or where a steep incline has to be overcome. Last but not least, a special quick-release system allows rapid changing of the eccentric screw attachment.

Total Process Control

The dosing device includes an injection molding and an extrusion mode with regranulate management as well as monitoring of dosing volume and remaining material. Mixing and dosing data is logged by the WB4000 and backed up to databases. Additionally, the module can be integrated into existing IT infrastructure via LAN cable, Blue-Tooth and WLAN. Users have the option of entering commands for the correct recipe via a PDA handheld device or a central PC or notebook. Novosystems also offers special software for these control options, designed to handle up to 100 pumps.

Premiere: Deployment of Gravimetrics for Dosing Liquid Colors

Novosystems have developed two really innovative features: gravimetric management of liquid color dosing via software and scales. According to Novosystems, gravimetric dosing of amounts up to 50 kg is possible. The system calibrates itself: gravimetric dosing also results in even more accurate dosing with minimal variation in comparison with volumetric dosing with automatic adjustment. This new process means optimal consumption while maintaining high color quality, especially with very small amounts of color. Secondly, optional integration of the gravimetric technology via a handheld computer or WLAN – previously the standard for volumetric measurements is now possible.

To sum up: the different demands of plastic production processes and the whole issue of production volumes – from the deployment of liquid colors for laboratory extruders or micro injection molding through to high volume extrusion – Novosystems has taken all of these requirements into account when designing the WB4000. High-tech dosing of liquid colors for increased potential and significantly more flexibility when coloring plastics.

GLOBALINE Debuts at NPE2009 — Efficient, Pre-Engineered Sheet Extrusion Systems

Monday, June 15th, 2009

Aurora, IL, June, 15, 2009 — PTi’s new product line, aptly named GLOBALINE, will be unveiled at NPE2009. GLOBALINE was developed to fulfill the need in the global market place for a cost effective solution configurable as a compact unit (NPE version) for inline thermoforming or a full length configuration for producing roll stock. The GLOBALINE will emphasize flexibility; allowing processors to efficiently produce smaller runs of sheet from key materials such as PP, PS, PET and polylactic acid, the bioresin known as PLA.

Dana Hanson, President of PTi, said “The GLOBALINE has been engineered to cut delivery times and costs, with lead times trimmed 30%-40% and a price tag that’s much lower than custom designed machines.” “Incorporating a patent-pending, linear bearing mounted frame infrastructure, among other features,” Hanson says, “mechanical system installation can take only two to three days.”

The GLOBALINE brand is available in two unique platforms distinguished by finished product widths of 1.0 or 1.5 m (40 or 60”),” stated Hanson. “Depending on the application and the customer requirement, the GLOBALINE can be configured for a range of production outputs between 300 - 1750 kg/hr (650 - 3900 lbs/hr). All GLOBALINE systems are available in mono-layer or co-extrusion formats for A/B, A/B/A, A/B/C, and more.”

GLOBALINE is a key part of PTi’s worldwide strategy for expanding in regions such as Russia, Eastern Europe, South America, China and India, said John Chalmers, Vice President of Sales and Marketing. “Rigid Packaging, particularly for food and medical applications is a growing market in those countries”, he said. “We appreciate that in developing markets customers aren’t able to dedicate their production to one particular product. GLOBALINE will allow them to run multiple products efficiently on one machine. We’re taking a proactive stance to develop a machine that’s going to address the needs of these developing markets.”

GLOBALINE features pre-engineered, compact, components that are configurable to customer specific production requirements. The modular design offers many unique features such as:

- Integral Ratchet Actuated Gap Positioning and Display (patent pending)

- Integral Ratchet Vertical Nip Height Positioning (patent pending)

- Linear bearing mounted frame infrastructure for precise retraction and ease of installation (patent pending)

- Universal anti-stat coater for top, bottom and both side coating applications (patent pending)

- Pivoting extruder base via a unique hydraulic jacking system for ease of screw removal and maintenance

- Touch screen controls featuring on line tutorial instructions for start-up and shut down sequencing as well as AutoRamp™ automatic - line coordination control

- Individual roll drives

- Quick style electrical plug-ins throughout for ease of installation and maintenance

- Mechanical system installation in 2 - 3 days

GLOBALINE also has applications in markets where extremely short production timelines and cost reductions are the rule rather than the exception. Being a pre-engineered system, the cost is reduced and lead times / speed to market are greatly improved. GLOBALINE’s pre-engineered modular lines can provide solutions for:

- Rapid start-ups with cost containment. Perfect for Contract Packagers or for larger companies needing small, versatile machinery for use in pilot lines for new product development, rapid product deployment or market testing

- JIT(Just In Time) production needs — GLOBALINE is ideal for smaller quantity, decentralized production lines

For more information on GLOBALINE, contact [email protected] or visit www.ptiextruders.com

TSM Loss in Weight (Continuous)

Friday, June 12th, 2009

The TSM loss in weight (continuous) gravimetric blenders provide a “dosing” solution for blending and extrusion control for up to 7 components and up to 3000 kg/hr. Having constantly improved these systems over the years, the TSM loss in weight blenders now give total reliability, excellent precision and advanced process control options to ensure consistent product quality. Not only do TSM provide continuous throughput measurement, the option is also available to maintain the extruder throughput at the desired level, i.e. Kg/hr control.

Optional haul off speed measurement can be added to ensure that the weight per length is controlled to the desired specification (yield control). This ensures that the product being produced is maintained at the desired thickness without operator intervention. This mode can be extended to weight per area control through entry.

An easy-to-service control module contains the weigh system electronics. The colour touch screen control panel is extremely user friendly and provides intuitive text prompts. As the job progresses, the operator can view material weights and kg/h throughput, and alarm incidents which are time and date stamped. Furthermore, the electronics design also allows TSM to get a rapid weight loss measurement from which we can get excellent control response, thus allowing the blender to react almost instantly to any change in line speed or screw speed. Additionally the newly added blockage/stall feature will detect a stalled screw or material blockage while an encoder will provide instantaneous dosing screw speed data. Moreover, the system also provides inventory reporting by component, total weight summaries and current order reports, all keyed with customer and material codes.