Plastic and nonmetallic article shaping or treating: processes – Treating shaped or solid article – By a temperature change
Patent
1976-03-08
1977-10-11
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Treating shaped or solid article
By a temperature change
34155, 264236, 425325, 425363, B29H 501
Patent
active
040535509
ABSTRACT:
A method of vulcanizing continuous lengths of elastomeric or plastomeric material which comprises driving the material through an enclosure, within which it is subjected to vulcanizing conditions, in the form of a helix, the helix convolutions in part contacting a drive mechanism and in part being freely suspended. Also an apparatus for vulcanizing continuous lengths of flexible material, comprising an enclosure, means for providing therein an atmosphere at an elevated temperature and pressure, spaced pressure-retaining inlet and outlet means for the continuous flexible material, and drive and support means for feeding the material through the enclosure in the form of a helix comprising partially unsupported convolutions. The invention is particularly useful in the vulcanization of hosing formed for example by extrusion or by helical winding or both.
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Brunner F. W.
Germain L. A.
The Goodyear Tire & Rubber Company
Thurlow Jeffery R.
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