Method for manufacturing a fire-resistant and/or fire-retardant cable
OwnerThierry AUVRAY, Franck GYPPAZinventors
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Abstract
The present invention relates to a method for manufacturing a cable comprising at least one elongate electrically conductive element, at least one composite layer surrounding the elongate electrically conductive element, the composite layer comprising a non-woven fibrous material impregnated by a geopolymer material, and at least one polymer sleeve surrounding the composite layer, the method using a tube of plastic material to facilitate the extrusion of the polymer sleeve around the composite layer.
Claims14
A method for manufacturing a cable having at least one elongate electrically conductive element, at least one composite layer surrounding said elongate electrically conductive element, said composite layer comprising a nonwoven fibrous material impregnated with a geopolymer material, and at least one polymer sheath surrounding said composite layer, said method the steps of:
- i) passing a cable comprising at least one elongate electrically conductive element, and at least one nonwoven fibrous material impregnated with a geopolymer composition surrounding said elongate electrically conductive element, into a plastic tube, and
- ii) extruding a polymer sheath using an extruder comprising at least one extruder head equipped with a die and a punch,
- wherein a portion of said plastic tube is inserted into the extruder head and is configured to prevent contact between the geopolymer composition and the punch of the extruder head.
Dependencies are inferred from the claim text.