| Due to variations in screw design, heat efficiency, etc. according to types of facilities, optimal conditions for each facility may differ. Therefore , the optimal temperature conditions for each facility must be taken into consideration depending on extruding pressure, cooling efficiency, changes in MI of the final product, appearances of the final product, etc. |
| To meet the impact strength and creep strength required for PP-R pipe, R200P has a very low melt index. Therefore special care is required when deciding adequate extrusion conditions. Because of the low melt index of R200P, extruding pressure can substantially increase during extrusion and mixing efficiency of Color M/B may be decrease. In addition, because Random PP has a characteristic of cooling down slowly, cooling conditions must be strengthened for achieving normal production speed. Rheology data of PP-R offers much information about the flow of PP under stress.It is also useful in deciding optimal processing conditions. Hyosung is eager to supply detailed rheology data upon customer request. |
Recommended processing condition. |
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| The most important factor in Injection moulding of fitting is to secure the optimal mold design for the flow of PP-R resin, which is characterized by very low MI. Excessive stress applied to melted R200P can result in rough surface areas in the final products or otherwise damaged products. Therefore, it is important to apply as less stress as possible at the optimal temperature. |
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