NEWSWIRETODAY Press Release& Newswire Distribution | HOME
MOST TRUSTED NEWSWIRE PRESS RELEASE DISTRIBUTION
PRTODAY / NewswireToday press release distribution service network
More news: Research
Written by / Agency / Source: AIJU (Toy Technological Institute)
Check Ads Availability|e-mail Article

Are you the owner of this article?, Turn it PREMIUM with your LOGO instead - and make it 3rd party Ads-Free! within the next hour!

AIJU Undertook A Study on Thermography in the Plastic Industry - Infrared Thermography is a technique that can be employed in the plastic industry for process optimization and quality improvement, as well as in the development of new tools
AIJU Undertook A Study on Thermography in the Plastic Industry

 

NewswireToday - /newswire/ - Ibi, Alicante, Spain, 2009/07/17 - Infrared Thermography is a technique that can be employed in the plastic industry for process optimization and quality improvement, as well as in the development of new tools.

   
 
Your Banner Ad Here instead - Showing along with ALL Articles covering Research Announcements

Replace these Affiliate Programs at ANYTIME! Your banner here within the next hour. Learn How!


 

Thermography in the Plastic Industry

Infrared Radiation
Infrared rays were discovered in 1800 by Frederick William Herschel. He noticed that the heat going through the coloured filters, with which he observed the sun, was dependant on the colour of the filter. Then, Herschel decided to shine the light through a crystal prism in order to generate a spectrum (the rainbow) and he measured the temperature of each colour. He observed that the temperature was higher on the red side, where there was no visible light to the human eye. This radiation was called “caloric rays”, and finally became known as infrared radiation.
Around 1880, Samuel P. Langley invented the first infrared radiation detector (bolometer) which could detect radiation by the temperature increase produced by a heat absorbing body. In 1980 the first micro-bolometers appeared which are currently used as detectors in thermographic cameras.
All objects that have a temperature superior to absolute “Zero” (0 Kelvin or -273.15 ºC); emit waves in the infrared band. When the temperature of an object increases, it emits more energy in a lower wavelength.
Infrared radiation, visible light and ultraviolet light are energy forms in the electromagnetic spectrum which differ in wavelength.

Thermopraphic Cameras
The human eye can only see a small range of wavelengths (from 0.4 till 0.75 µm); nevertheless thermographic cameras can detect infrared energy that is non-visible to the human eye. The normal range of temperatures these cameras can register is between -20ºC and 500 ºC, but this range can be extended from -40 ºC at the bottom end up to 2000ºC at the top end. The cameras transform the infrared energy into an image with a colour map which shows the temperature of the object at each point. This makes them very versatile and gives them an infinite range of applications both, in the plastic sector as well as other sectors.
One of the most important parameters when measuring temperature with a thermographic camera is the emissivity. It indicates the capacity of an object to emit infrared radiation. This capacity can be measured and the values go from zero, for non-emitting materials, to one for black objects. There are several variables that affect the emissivity of an object, such as the wavelength, the visual field, the geometrical form and the temperature.

Figure 2 shows a table with the emissivity values of some materials:
• Materials : Emissivity (ε)
• Black Object : 1
• Human Skin : 0.98
• Water : 0.98
• Asbestos : 0.95
• Ceramic : 0.95
• Mud : 0.95
• Cement : 0.95
• Fabric : 0.95
• Gravel : 0.95
• Paper : 0.95
• Plastic : 0.95
• Rubber : 0.95
• Wood : 0.95
• Copper (rusty) : 0.68
• Stainless Steel : 0.1
• Copper (polished) : 0.02
• Aluminium (polished) : 0.05

If high precision is required when measuring the temperature of an object, we need to introduce the emissivity value of the object into the thermographic camera or into the analysis software. These already have the algorithms required to correct the temperature according to the emissivity values.

Applications in the Plastic Industry
Infrared Thermography is a technique that can be employed in the plastic industry for process optimization and quality improvement, as well as in the development of new tools.
In the thermoplastic injection process, a large amount of information about the transformation process can be collected by taking thermographic images of the recently injected pieces that are still in the mould or that have just been extracted, or even of the mould surface itself:

• Temperature deviation in the critical points (injection points, insertions, thicker areas of the piece, etc.)
• Detection of hot spots, caused by thermoplastic material friction in some area of the mould.
• Effectiveness of the temperature control.
• Effectiveness of the mould temperature controller.
• Appropriate heat distribution both in the piece and the mould.
• Study of the temperature changes on the mould surface until the process becomes stable.
• Optimization of cooling times.
• Validation of results obtained using Simulation Programmes.
As a practical case study to see the possibilities that thermography can offer, AIJU undertook a a thermographic study of the injection process on a mould for a toy hobby-horse.
It was a one cavity mould with the feeding system by pouring cold with three entrance points on the workpiece. The test was undertaken using a Demag Ergotech machine of 110 Tn and Wittmann cooling equipment.
The superficial temperature of the pieces obtained, which vary according to the cooling times established, could be observed:
- After 15s cooling, it was 1100, 1100 & 82'2 in three strategic points;
- After 30s cooling, 107'2, 83'8 & 67'1 in the same points, and
- After 60s cooling, 72'7, 57'6 & 52'3.

It could be appreciated that the widest areas of the piece had higher temperatures than the rest. According to the material used and the injection conditions, you can determine the time required to remove the piece from the mould without any difficulty, validate the refrigeration system of the mould and determine the cause of some problems in pieces such as shrinkage. In this practical case the influence of the cooling time was studied to optimise the process conditions, but a similar study can be done, applying it to other variables like the material temperature, the mould temperature, the injection speed (shear load problems), etc.
The experimentation showed the changes of the superficial temperature of the mould after several injection cycles, in such a way that it can be used to determine the times that a mould takes to become stabilised and consequently, to obtain pieces with the same properties, a basic aspect for technical pieces with high quality requirements.

 
 
Your Banner Ad Here instead - Showing along with ALL Articles covering Research Announcements

Replace these Affiliate Programs at ANYTIME! Your banner here within the next hour. Learn How!


 

Written by / Agency / Source: AIJU (Toy Technological Institute)

 
 

Availability: All Regions (Including Int'l)

 

Traffic Booster: [/] Quick NewswireToday Visibility Checker

 

Distribution / Indexing: [+]

 
 
# # #
 
 
  Your Banner Ad showing on ALL
Research articles,
CATCH Visitors via Your Competitors Announcements!


AIJU Undertook A Study on Thermography in the Plastic Industry

Company website links NOT available to basic submissions
It is OK to republish and/or LINK any newswire for any legitimate media purpose as long as you name NewswireToday and LINK as the source.
 
Publisher Contact: Miguel A. León - AIJU.info 
+34965554475 procesos[.]aiju.info
 
Newswire Today - PRZOOM / PRTODAY disclaims any content contained in this article. If you need/wish to contact the company who published the current release, you will need to contact them - NOT us. Issuers of articles are solely responsible for the accuracy of their content. Our complete disclaimer appears here.
IMPORTANT INFORMATION: Issuance, publication or distribution of this press release in certain jurisdictions could be subject to restrictions. The recipient of this press release is responsible for using this press release and the information herein in accordance with the applicable rules and regulations in the particular jurisdiction. This press release does not constitute an offer or an offering to acquire or subscribe for any AIJU (Toy Technological Institute) securities in any jurisdiction including any other companies listed or named in this release.

Research via RSSAdd NewswireToday - PRZOOM Headline News to FeedBurner
Find who RetweetFollow @NewswireTODAY

Are you the owner of this article?, Turn it PREMIUM with your LOGO instead - and make it 3rd party Ads-Free! within the next hour!


Read Latest Articles From AIJU (Toy Technological Institute) / Company Profile


Read Research Most Recent Related Newswires:

Frost & Sullivan Awards EBSCO Information Services for Delivering Innovative Solutions to Access Medical Research Information for Healthcare Providers
International Conference on Machine Learning & Data Mining to Debut July 16-21, 2022 in New York USA
Elanco and Royal DSM Announce Strategic Alliance in U.S. for Bovaer® A Revolutionary, Methane-Reducing Feed Additive for Cattle
Canopy Biosciences Launches the First of a Series of Targeted Assay Kits for ChipCytometry
Safran Teams Up with the University of Limoges, CNRS and the National Research Agency to Inaugurate the Joint X-SELANS Lab
DSM’s Global Head Office to Move to Maastricht, The Netherlands
Precision NanoSystems joins Danaher’s Life Sciences Platform
Bruker’s Molecular Phenomics Research Tools Enable New Insights into ‘Long COVID’ and Post-Acute Metabolic Abnormalities
ABB and ETH Extend Partnership to Advance Research into the Future of Robotics
Naval Group Partners with Flinders University on Exoskeleton Research
Leonardo Contributes to the Innovation of the Sardinia Radio Telescope in Sardinia
Bruker Establishes New Customer Support Center in the Middle East At King Abdullah University of Science and Technology Research Park
ABB and Talga to Explore Development and Construction Options for Major European Battery Anode Project
WuXi AppTec Applauded by Frost & Sullivan for its Unmatched Breadth of Expertise in Facilitating Early-stage Innovation and Clinical Research
ABB Strengthens Research into Smart Materials with New R&D Facility

Boost Your Social Network
& Crowdfunding Campaigns


LIFETIME SOCIAL MEDIA WALL
NewswireToday Celebrates 10 Years in Business


PREMIUM Members


Visit  BizJobs.com

Visit  Limelon Advertising, Co.





 
  ©2022 NewswireToday — Limelon Advertising, Co.
Home | About | Advertise/Pricing | Contact | Investors | Privacy/TOS | Sitemap | FRANCAIS
newswire, PR press releases distribution service magazines engine news alert newsroom press room breaking news public relations articles company news alerts newswiredistribution ezine bizentrepreneur biznewstoday digital business report market search pr firms agencies reports distri-bution today investor relation successful internet entrepreneurs newswire distribution prtoday.com newswiredistribution asianewstoday bizwiretoday USA pr UK today - NOT affiliated with PRNewswire as we declined their partnership offer in 2013
 
PRTODAY & NewswireTODAY are proudly NOT affiliated with USA TODAY (usatoday.com)