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Many resins used in plastic forming techniques are hygroscopic which can require many hours of drying time before use. Examples of such hygroscopic resins are nylon, acrylics, ABS (acrylonitrile-butidiene-styrene), polycarbonates and thermoplastic polyesters.
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www.freepatentsonline.com/4531308.html
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This is particularly true for all hygroscopic plastic resins. Hot air drying is recommended for non-hygroscopic resins where the moisture is present on the ...
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www.bryair.com/pdf/pde_paper.pdf
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Hygroscopic Swelling in Plastic Encapsulated Microelectronics: An Experimental Study Using Moir?Interferometry ... These results demonstrate that hygroscopic swelling must be taken into account in environments where plastic packages are exposed to a high temperature/high relative humidity environemt.
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www.calce.umd.edu/general/grads/thesis/2003.htm
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Index Terms - Chip/mold compound interface, humidity, hygroscopic swelling behavior, mold compounds, plastic encapsulated microcircuit (PEM).
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www.calce.umd.edu/articles/abstracts/2004/characterizat...
www.calce.umd.edu/articles/abstracts/2004/characterization.htm
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A flexible light guide of plastic tubing is filled with a liquid which does not wet the plastic material, and preferably also is hygroscopic. The plastic material of the tube is preferably Teflon, FEP, PFA or PTFE; ... a flexible hollow tube of plastic material; light transmissive means closing the tube at its ends;
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www.patentgenius.com/patent/4009382.html
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The consequence of this is that the quantity of air for the afterheating process amounts to at least 180 Nm.sup.3 /h. Since with hygroscopic plastic materials,especially with polyethylene terephthalate (PET), the afterheating process must take place under a dry atmosphere, both return air streams should be combined...
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www.patentgenius.com/patent/6449875.html
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2 Used for high hygroscopic engineering plastic and rubber such as PA,PC PBT,PET.etc.,H4 and H5 ypes of can be selected according customers'demand. 3 Integrates dehumidifying,drying and two-step feeding... Click for detail...
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www.plastic-machinery-manufacturer.com/Plastic-Auxiliar...
www.plastic-machinery-manufacturer.com/Plastic-Auxiliary-Machine-c17.html
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Manufacturers of desiccant dryers and hot air dryers for the material handling industry. ... Foremost Machine Builders designs and manufactures hot air and dehumidifying or desiccant dryers for drying hygroscopic and non-hygroscopic plastic resins.
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www.foremostmachine.com/dryers.htm
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Manufacturers of dehumidifying or desiccant dryers and hot air dryers for drying plastic resins. ... Foremost Machine Builders designs and manufactures a full line of twin tower dehumidifying or desiccant dryers for drying hygroscopic and non-hygroscopic plastic resins.
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www.foremostmachine.com/dryers1.htm
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