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AssigneeImperial Chemical Industries PLC
InventorsGeoffrey Cowen, Philip Norton-Berry, Margaret L. Steel
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A process for the production of heterogeneous articles such as heterofilaments and fibres containing a plurality of solid phases, comprises supplying a thermoplastic first material in particulate solid form to a surface of rotation of a rotating body so that it travels across said surface towards a discharge zone due to forces generated by the rotation of the body, melting the thermoplastic first material as it travels across the surface, supplying a second solid material to the surface, discharging both materials together from the discharge zone by centrifugal forces, and solidifying the thermoplastic material to form the heterogeneous article. The second material is preferably also thermoplastic and further solids, especially reinforcing fibres, can also be incorporated likewise.
A process for the production of heterogeneous articles containing a plurality of solid phases, wherein the process comprises supplying a thermoplastic first material in particulate solid form to a surface of rotation of a rotating body, the surface of rotation having a coaxial discharge rim around its periphery and the first material being supplied to the surface so that it is caused to travel across said surface towards the rim by forces generated by the rotation of the body, melting the thermoplastic first material as it travels across the surface, supplying a second solid material to the surface so that it also travels across the surface in like manner to reach the rim with the molten first material, discharging the materials together from the rim of the surface by centrifugal forces, and causing or allowing the thermoplastic first material to solidify and form the heterogeneous article thereby.
A process according to any one of the preceding claims which comprises supplying to the surface at least one other solid material in addition to the said first and second materials.
Dependencies are inferred from the claim text.