TY - GEN
T1 - Innovative extrusion process for liquid silicone rubber
T2 - 74th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Indianapolis 2016
AU - Haerst, Miriam
AU - Ecke, Nicholas C.
AU - Wintermantel, Erich
PY - 2016
Y1 - 2016
N2 - Silicone rubber with its good chemical and physical resistance properties is of major interest for elastic tubing. The breadth of silicone tubings is continuously manufactured by extrusion. The extruded silicone products are cured downstream of exiting the die. Thus the viscosity of the uncured silicones must be high enough for a dimensionally stable extrudate and even with high viscosities, achievable precision and tolerances are limited due to this fact. Therefore an innovative extrusion process, which uses a heated die in order to vulcanize the extrudate inside the die, has been developed. In this work, a formula for the flow rate is derived for an in-die-curing silicone extrusion in order to mathematically describe this process and to be able to predict the capabilities of this technology. The results of the calculations are being compared to experimental results to determine their validity.
AB - Silicone rubber with its good chemical and physical resistance properties is of major interest for elastic tubing. The breadth of silicone tubings is continuously manufactured by extrusion. The extruded silicone products are cured downstream of exiting the die. Thus the viscosity of the uncured silicones must be high enough for a dimensionally stable extrudate and even with high viscosities, achievable precision and tolerances are limited due to this fact. Therefore an innovative extrusion process, which uses a heated die in order to vulcanize the extrudate inside the die, has been developed. In this work, a formula for the flow rate is derived for an in-die-curing silicone extrusion in order to mathematically describe this process and to be able to predict the capabilities of this technology. The results of the calculations are being compared to experimental results to determine their validity.
UR - http://www.scopus.com/inward/record.url?scp=85010676958&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85010676958
T3 - Annual Technical Conference - ANTEC, Conference Proceedings
SP - 795
EP - 801
BT - ANTEC 2016 - Proceedings of the Annual Technical Conference and Exhibition of the Society of Plastics Engineers
PB - Society of Plastics Engineers
Y2 - 23 May 2016 through 25 May 2016
ER -