Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1977-01-21
1978-10-24
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
264236, 264329, 264331, 264349, 425113, 425114, 427117, 427120, B29F 310
Patent
active
041221451
ABSTRACT:
A method and apparatus for continuously coating a thread or core with a thermoplastic is disclosed wherein a flowing stream of the plastic, in the form of a melt or liquid monomer is used to convey the core from one or more elongated and heated guide tubes into and through one or more elongated and cooled molding tubes axially aligned with each guide tube whereby the thread or core is automatically centered in the tubes and a uniform outer coating of hardened plastic is applied. The liquid monomer can be treated with a suitable activator or catalyst before entry into the mold tubes or at an intermediate mixing zone located between the exit part of the guide tubes and the inlet part of the cooling tubes. The mixing zone is larger in volume than the tubes and provides an off-center convolution about the exit ports of the guide tubes and coaxial conical exit ports converging into the entry ports of the molding tubes.
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Thomas Bruce K.
Thurlow Jeffery R.
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