Method and device for producing plastic profiles
AssigneeTechnoplast Kunstsofftechnik GmbH
InventorsMeinhard Schwaiger, Frank Dorninger
Life of this patent
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Abstract
The invention relates to a method for producing plastic profiles comprised of at least one hard profile strand (2), for example, consisting of hard PVC, and of at least one soft profile strand (1), for example, consisting of soft PVC, whereby both profile strands (1, 2) are simultaneously produced by separate extrusion nozzles (20, 17a) and are cooled in a cooling device (16, 18). A secure joining can be effected using simple means by leading the soft profile strand (1) directly out or the extruder (17) and into a cooling bath (16, 18), inside of which it is completely cooled, and the hard profile strand (2) and the soft profile strand (1) are subsequently joined under pressure.
Claims15
A method for producing plastic profiles comprised of at least one hard profile strand (2), consisting of hard PVC for example, and at least one soft profile strand (1), consisting of soft PVC for example, with both profile strands (1, 2) being produced simultaneously by separate extrusion dies (20, 17a) and being cooled in a cooling apparatus (16, 18), characterized in that the soft profile strand (1) is led directly from the extruder (17) into a cooling bath (16, 18) in which it is cooled off completely and that the hard profile strand (2) and the soft profile strand (1) are subsequently joined under pressure.
An extrusion apparatus for producing plastic profiles (11), consisting of at least one hard profile strand (2), e.g. of hard PVC for example, and at least one soft profile strand (1), e.g. of soft PVC for example, with separate extrusion dies (20, 17a) for producing at least one hard profile strand (2) and at least one soft profile strand (1) as well as a joining device in which the hard profile strand (2) is joined with the soft profile strand (1) by using pressure, characterized in that a common cooling bath (18) or separate cooling baths (16, 18) for each profile strand (1, 2) are provided.
Dependencies are inferred from the claim text.