Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1988-12-08
1989-09-19
Lorin, Hubert
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
2641761, 2642108, 26421114, 422131, 422134, 422135, 159 62, 159 63, D01D 512, D01D 102
Patent
active
048679364
ABSTRACT:
High strength polyester multifilament yarn of improved dimensional stability, which has the proper combination of an intrinsic viscosity of at least 0.90, relatively low work loss and a high degree of toughness, is incorporated as tire cord into a rubber tire for reinforcement to provide an important improvement in fatigue life and retained fatigue strength. The continuous melt-spin process comprises the steps of feeding prepolymer to a first finisher vessel to achieve at least 0.4 intrinsic viscosity transferring polymer to a second finisher vessel for a period sufficient to achieve an intrinsic viscosity of at least 0.95, and supplying this polymer to an extrusion spinnerette.
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Buyalos Edward J.
Millure David W.
Neal James G.
Rowan Hugh H.
Allied-Signal Inc.
Lorin Hubert
Thrower William H.
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