Moisture Analyzing is an important process in plastic molding industry but mostly neglected. Engineering plastic, such as PA (Nylon), PC and PET, are hygroscopic. They adsorb moisture from the humid ambient air and give it back during the dry days. And every type of resin can hold a certain amount of moisture between its molecular chains.

According to the research, the presence of excessive moisture in resin has significant effect on its physical properties, i.e. weight, density, viscosity, melt flow index and conductivity. These properties are directly related to the resin’s working conditions and will finally affect the molded parts. i.e. mechanical strength and appearance.

During the injection process, excessive moisture in resins vaporizes and condenses on the surface of the mold. Splay, silver streaking, internal bubbles or craters are commonly found defects on the molded parts. In the worst case, the moisture may even cause attrition to the mold over a period of......

Join Now to view the rest of this term paper!
Members: Login to view this research paper.

Title: Indispensable Tools For “moistur Control” On Plastic - Mark 3
Approximate Word Count: 512
Approximate Pages: 3 (250 words per double-spaced page)

With the Term Papers Lab Membership Pass, you get instant access to every essay on this site, including this essay on Indispensable Tools For “moistur Control” On Plastic - Mark 3, for as long as you remain a member.

Other essays sites charge almost $100 for a single term paper. At Term Papers Lab, you can get instant access to over 100,000 research papers for as little as $29.95!