Method for producing a rod-shaped composite part and rod-shaped composite part
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
InventorsWilhelm Eckl, Helmut Nagele, Jürgen Pfitzer, Norbert Eisenreich, Peter Eyerer, Peter Elsner
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Abstract
A method for producing a substantially rod-shaped composite body (6) consists of a core (4) enveloped by at least one polymer, according to which the plasticized polymer (5) is extruded onto the core (4). At least one natural polymer is used and a sliding agent on the basis of native oils and/or waxes is added before or during extrusion. The method is used for the production of writing, drawing, cosmetic pencils.
Claims17
A method for producing a substantially rod-shaped composite body having a core surrounded by at least one polymer, the method comprising the steps of:
- a) plastifying said at least one wherein said polymer is a natural polymer;
- b) adding a sliding agent to said plastified polymer, said sliding agent comprising at least one of a native oil and a wax;
- c) extruding said plastified polymer onto said core.
Dependencies are inferred from the claim text.