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dc.contributor.author Samarawickrama, UDA
dc.date.accessioned 2014-06-06T13:21:30Z
dc.date.available 2014-06-06T13:21:30Z
dc.date.issued 2014-06-06
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/9985
dc.description.abstract Designing of the proposed profile extrusion die had few main tasks. One was to find out the most suitable type of die and the other was to calculate important operating parameters like pressure drop. The next is to calculate the land and calibration dimensions. Due to complex nature of the proposed profile, it was approximated to a slit die for the purposes of calculating pressure drops and die swell / draw down effects. Based on the thickness calculated for die, product and equilibrated swell state were used to calculate the dimensions of the complex die land and calibrator. When designing the die, due consideration was given to phenomenon like ,melt flow instabilities and shrinkage on cooling. Only top half of the PVC trunking profile was designed in this exercise, as trials are needed to validate the models selected and based on these values only, progress onwards could be envisaged. en_US
dc.language.iso en en_US
dc.subject CHEMICAL ENGINEERING-THESIS ; POLYMER TECHNOLOGY ; DIES ; EXCLUDERS-DIES en_US
dc.title Designing of a profile extrusion die en_US
dc.type Thesis-Abstract en_US
dc.identifier.faculty Architecture en_US
dc.identifier.degree M.Sc. en_US
dc.identifier.department Department of Architecture en_US
dc.date.accept 1999
dc.identifier.accno 72265 en_US


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