Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Infrared Heat Used to Form and Join Plastics

19.10.2004


An infrared tube furnace for drying plastic coatings or tempering polyurethane pipes after extrusion. (Copyright Heraeus Noblelight 2004)


Heraeus at the plastics industry`s trade fair K in Düsseldorf - Infrared emitters for every application

In the plastics industry today, when extruding foil, forming PET bottles, riveting automotive interior panels, drying the print on yoghurt cups, or sealing tank containers, an increasingly important tool is the unique source of heat known as infrared radiation. Heraeus Noblelight is known for its innovative product development and application of infrared heat systems. The company is a subsidiary of the globally active precious metals and technology group Heraeus Holding GmbH in Hanau, Germany, and is presenting its infrared emitter technology at the plastics industry’s largest trade fair, the K in Düsseldorf, from October 20-27, 2004. These infrared emitters can be specially designed in terms of shape, voltage, and performance to meet the various product and process needs of today’s plastics manufacturers and treatment plants. Heraeus Noblelight is among the few companies specialized in providing customized artificial sources of light for the entire spectrum of industrial applications - from ultraviolet (UV) to infrared (IR) – for use in the fields of research, analysis, engineering, manufacturing, medicine, and environmental protection.

The Carbon Infrared Technology (CIR) developed by Heraeus Noblelight produces a special type of medium wave IR radiation. The carbon emitters are noted for their exceptional efficiency in the drying and treatment processes, and can be quickly powered for energy efficient use in individual thermal processes. CIRâ lamps are ideal for targeted thermal radiation of defined surfaces and for the quick drying of water based coatings.



The benefits to the user are clear

Infrared light (with wavelengths between 800 and 5,000 nanometers) is very intense and energy efficient, so it increases the rate of production while simultaneously reducing manufacturing costs. Further, many of the IR emitter systems can be integrated in existing manufacturing processes with only minimal space requirements. In comparison to conventional techniques, like warm air and contact heating, many of the manufacturing steps can be simplified by the use of non-contact, infrared radiation.

The shape and material of the plastic products determine how an infrared lamp is designed and built. IR emitters can have any imaginable shape: long, straight emitters for large flat surfaces and curved, circular or small emitters for thin edges or very small surface areas. Custom built emitters make thermal processing available even to plastic parts with challenging, complex shapes.

An example of such a processing solution is a circular IR emitter built into a tube furnace that focuses the heat directly onto thin materials passing below it. This enables an efficient thermal processing of continuous flow materials in a typical throughput process. In such ovens, plastic ropes are fixed, wires are sheathed with plastic or tubes are shrunk onto electrical screw connections as insulating sheaths..

Infrared waves create temperatures up to 3,000 °C

The useful wavelengths for IR heat have a significant impact on industrial processes and range between 800 and 5,000 nanometers. The shorter the wavelength, the greater the energy emitted and, in turn, the higher the temperatures produced.

IR thermal emitters that operate in the near infrared (NIR) spectrum use a wavelength of 800 nanometers, produce temperatures up to 3,000 °C, and can radiate a large volume of thermal energy to a very precise point in a very short time. NIR is appropriate for coatings and heat conductive solid materials. Medium IR wave emitters can produce temperatures from 900 to 1,200 °C and have a wavelength of up to 3,000 nanometers. They are ideal for drying thin layers of paint, warming plastic, and drying such materials as paper. A significant advantage in use is that less stress is placed on the base material and the entire system remains cooler due to the rapid heating of water particles by the medium IR waves.

The material characteristics such as thickness and color also influence the choice of the appropriate IR emitter. Generally, the short wave IR energy penetrates to a deeper level while the medium waves transfer more heat energy to the surface. However, no matter how much the individual characteristics of plastics may vary, or what the different treatments they undergo must be, for almost 100 years, Heraeus Noblelight has provided the latest thermal technology and continuously set the standards for this sector.

Dr. Jörg Wetterau | Heraeus Holding GmbH
Further information:
http://www.heraeus.com
http://www.heraeus-noblelight.com

More articles from Process Engineering:

nachricht Etching Microstructures with Lasers
25.10.2016 | Fraunhofer-Institut für Lasertechnik ILT

nachricht Applying electron beams to 3-D objects
23.09.2016 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Will Earth still exist 5 billion years from now?

08.12.2016 | Physics and Astronomy

Oxygen can wake up dormant bacteria for antibiotic attacks

08.12.2016 | Health and Medicine

Newly discovered bacteria-binding protein in the intestine

08.12.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>