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Thermoplastic rubber material adjusting parameters of injection molding machine used in injection

View: 74305/26/2015  

Thermoplastic rubber adjusting parameters of injection molding machine used in injection

1.injection parameters:
molding shrinkage : 1.0%~1.8%
barrel temperature: rear part: 160℃~185℃
middle part: 185℃~195℃
front part: 195℃~205℃
nozzle: 195℃~205℃
mold temperature: 20℃~40℃
back pressure : 0.3MPa~0.7MPa
injection speed: medium


2.other points for attention

1.) The above parameters are obtained based on the material's characteristics and processing equipment requirements, the practical processing is subject to the slight adjustment of processing condition.
2) The  temperature parameters of TPR of base material  SBS are set slightly lower than those of  TPE of base material  of SEBS.
3) The injection temperature:  160~250℃ ,the specific temperature is related to material's formula, melt adhesive capacity of processing equipment and   mould design.You may consult with our factory--CHANGZHOU FENGYUAN PLASTIC RUBBER CO., LTD for the specific injection processing temperature,and make some proper adjustments according to the practical processing condition,namely:
the injection temperature of TPE of base material of SEBS is higher than that of  TPR of mase material of SBS.
4.) The extrusion temperature: 120~180℃ the specific temperature is related to processing equipment and material's formula,,the extrusion temperature of  TPE of base material SEBS is higher than that of TPR of base material SBS.

 

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