Method of manufacturing a cable-like plastic composite body
AssigneeRoblon A/S
InventorsJohn Olesen, Jorgen Jorgensen
Life of this patent
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Abstract
A cable-like synthetic composite body which can be used as a support element for technical cables comprises a string of endless filaments of high modulus of elasticity which extend parallel to one another and to the cable axis, with the string being impregnated with a first thermoplastic material (12) in the form of a hot melt adhesive. The string (11') which is held together in this way is then sleeved by extrusion with the second thermoplastic material (13) which is filled with staple fibers (23) of a high modulus of elasticity. A sleeve of a third thermoplastic material (14) is then applied by means of extrusion onto the sleeve layer.
Claims10
A method of manufacturing a high strength cable-like plastic composite support body resistant to kinking, said support body having a longitudinal axis, the method comprising the stops of gathering together a plurality of substantially endless filaments of high modulus of elasticity into a core string so that said filaments in said core string extend parallel to one another in the direction of said longitudinal axis, impregnating said core string throughout its length with a hot melt adhesive which can be made liquid by heating and winding said core string impregnated with said hot melt adhesive with a high strength yarn while said hot melt adhesive is in a soft state to form a wound core string.
A method of manufacturing a cable-like plastic composite body having a longitudinal axis, in which a core string of substantially endless filaments of high modulus of elasticity which are gathered together and extend parallel to one another and to said longitudinal axis is impregnated with a liquid, solidifiable plastic and the plastic is subsequently solidified, characterized in that the core string is impregnated with a hot melt adhesive which can be made liquid by heating;
- and the core string impregnated with the hot melt adhesive is wound with a high strength yarn while said hot melt adhesive is still soft, and wherein said substantially endless filaments are passed over a surface of a heated rotating drum carrying a film of liquid hot melt adhesive in order to wet the filaments with adhesive on all sides to ensure complete watertightness of said cable-like plastic composite body, and wherein said substantially endless filaments coated with hot melt adhesive are gathered together on leaving said heated drum and are passed through an extruding device to form said core string impregnated with said hot melt adhesive.
A method of manufacturing a cable-like plastic composite body having a longitudinal axis, in which a core string of substantially endless filaments of high modulus of elasticity which are gathered together and extend parallel to one another and to said longitudinal axis is impregnated with a liquid, solidifiable plastic and the plastic is subsequently solidified, characterized in that the core string is impregnated with a hot melt adhesive which can be made liquid by heating;
- and the core string impregnated with the hot melt adhesive is wound with a high strength yarn while said hot melt adhesive is still soft, and wherein said filaments are passed over a surface of a heated rotating drum carrying a film of liquid hot melt adhesive in order to wet the filaments with adhesive on all sides to ensure complete watertightness of said cable-like plastic composite body, and wherein said filaments pass beneath a roller prior to contacting the surface of said heated drum.
Dependencies are inferred from the claim text.