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The Effect on Recycled resin Ratio of High Density Polyethylene on the Molded Parts  

Kang, Tae-Ho (School of Mechanical Engineering, Pukyong National University)
Kim, In-Kwan (School of Mechanical Engineering, Pukyong National University)
Kim, Young-Soo (School of Mechanical Engineering, Pukyong National University)
Publication Information
Resources Recycling / v.13, no.5, 2004 , pp. 23-27 More about this Journal
Abstract
In this study, experimental work was performed to mold tensile specimens by using the injection molding machine. Melt temperature, mold temperature and the mixed ratio of recycled resin were selected as processing parameters for studying the effect of those conditions on the shrinkage, weight, absorption, and tensile strength of molded parts. As a result, the shrinkage was increased according to the higher mold and melt temperature and it was more sensitive to the change of mold temperature. On the other hand, the weight of molded parts was decreased due to the increment of mold and melt temperature. Tensile strength was increased with mold and melt temperature, and it was also easy to change by mold temperature.
Keywords
polyethylene; injection molding; melt temperature; mold temperture; mixed ratio of recycled resin;
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