scholarly journals Discussion: “Infrared Radiation of Thin Plastic Films” (Tien, C. L., Chan, C. K., and Cunnington, G. R., 1972, ASME J. Heat Transfer, 94, pp. 41–45)

1972 ◽  
Vol 94 (1) ◽  
pp. 45-45
Author(s):  
R. F. Boehm
Keyword(s):  
Heat Transfer ◽  
Infrared Radiation ◽  
Plastic Films ◽  
Thin Plastic

Infrared Radiation of Thin Plastic Films

1972 ◽  
Vol 94 (1) ◽  
pp. 41-45 ◽  
Author(s):  
C. L. Tien ◽  
C. K. Chan ◽  
G. R. Cunnington
Keyword(s):  
Infrared Radiation ◽  
Optical Constants ◽  
Metal Substrate ◽  
Radiation Characteristics ◽  
Plastic Films ◽  
Analytical Technique ◽  
Thin Film Analysis ◽  
Normal Emittance ◽  
Thin Plastic ◽  
Film Side

A combined analytical and experimental study is presented for infrared radiation characteristics of thin plastic films with and without a metal substrate. On the basis of the thin-film analysis, a simple analytical technique is developed for determining band-averaged optical constants of thin plastic films from spectral normal transmittance data for two different film thicknesses. Specifically, the band-averaged optical constants of polyethylene terephthalate (Mylar, DuPont Co.) and polyimide (Kapton, DuPont Co.) were obtained from transmittance measurements of films with thicknesses in the range of 0.25 to 3 mil. The spectral normal reflectance and total normal emittance of the film side of singly aluminized films are calculated by use of optical constants; the results compare favorably with measured values.

Moldability improvement in microinjection molding via film lamination

2021 ◽  
pp. 096739112098650
Author(s):  
Dah Hee Kim ◽  
Young Seok Song
Keyword(s):  
Heat Transfer ◽  
Light Guide ◽  
Wall Slip ◽  
Skin Layer ◽  
Pattern Transfer ◽  
Plastic Plate ◽  
Resin Infusion ◽  
Microinjection Molding ◽  
Insulation Effect ◽  
Thin Plastic

The purpose of this study is to integrate a polymeric film onto a mold to impede thermal heat transfer during resin infusion. A thin plastic plate was fabricated by using microinjection molding. A polyimide (PI) film was laminated onto a mold in an effort to produce a thin light guide plate (LGP). The film could decelerate the solidification of molten polymer in the cavity of mold and enhance the wall slip of resin on the mold. The insulation effect was modeled numerically. The surface roughness and pattern transfer characteristics of the LGP were evaluated. It was found that the fluidity of the resin increased due to the decreased skin layer during mold filling. The results showed that the strategy proposed in this study could help decrease the thickness of LGP effectively when manufacturing the part via injection molding.

scholarly journals Sea Water Contamination in the Vicinity of the Italian Minor Islands Caused by Microplastic Pollution

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1108 ◽  
Author(s):  
Giuseppe de Lucia ◽  
Alvise Vianello ◽  
Andrea Camedda ◽  
Danilo Vani ◽  
Paolo Tomassetti ◽  
...  
Keyword(s):  
Water Contamination ◽  
Sea Water ◽  
Ethylene Vinyl Acetate ◽  
Average Density ◽  
Spectroscopy Analysis ◽  
Policy Makers ◽  
Plastic Films ◽  
Thin Plastic ◽  
Abundance And Distribution ◽  
River Mouths

The abundance and distribution of microplastics (MP) were evaluated in six “clean” sites (Italian minor islands) and in two “polluted” areas (near the mouth of two major Italian rivers). Samples of MP, plankton and persistent organic pollutants (POPs) were collected using a manta trawl (MA) and a plankton net (WP2), both lined with a 333 µm mesh net. MP have been confirmed to be ubiquitous since they were found at each site, showing an average density of 0.3 ± 0.04 items/m3 (values ranged from 0.641 to 0.119 ). When comparing the clean sites with the polluted ones, a significantly higher value of MP was found near the river mouths. The most common types of MP were synthetic filaments (50.24%), followed by fragments (30.39%), thin plastic films (16.98%) and spheres (2.39%). Infrared spectroscopy analysis highlighted that the most abundant polymers were polyethylene (PE-26%), polypropylene (PP-11%), polyethylene-terephthalate/polyester (PET/PEST-8%) and ethylene-vinyl-acetate (EVA-5%). Polychlorinated biphenyls and organochlorine pesticides were detected in all the samples with a high variability among sites and depths. This study adds to the existing information on the distribution of contaminants across the Mediterranean Sea, and is useful to policy makers who wish to implement effective measures to reduce MP pollution.

Thermal Effects on Ultrasonic Joining of Thin Plastic Films Using Torsional Vibrations

2008 ◽  
Vol 47 (8) ◽  
pp. 6431-6436 ◽  
Author(s):  
Kazunari Adachi ◽  
Tsuyoshi Takahashi ◽  
Kenichi Kamehashi ◽  
Kazumi Watanabe ◽  
Kenta Uchiyama ◽  
...  
Keyword(s):  
Thermal Effects ◽  
Torsional Vibrations ◽  
Plastic Films ◽  
Thin Plastic

The environmental degradation of thin plastic films

1993 ◽  
Vol 31 (3) ◽  
pp. 179-198 ◽  
Author(s):  
Philip J. Whitney ◽  
Clare H. Swaffield ◽  
Andrew J. Graffham
Keyword(s):  
Environmental Degradation ◽  
Plastic Films ◽  
Thin Plastic

Rapid heating of zirconia nanoparticle-powder compacts by infrared radiation heat transfer

2017 ◽  
Vol 37 (3) ◽  
pp. 1067-1072 ◽  
Author(s):  
Radek Kalousek ◽  
Jiří Spousta ◽  
Jakub Zlámal ◽  
Petr Dub ◽  
Tomáš Šikola ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Infrared Radiation ◽  
Rapid Heating ◽  
Radiation Heat Transfer ◽  
Radiation Heat ◽  
Zirconia Nanoparticle ◽  
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