| CPC B29C 70/526 (2013.01) [B21C 23/142 (2013.01); B21C 25/02 (2013.01); B21C 35/023 (2013.01); B29C 43/34 (2013.01); B29C 43/46 (2013.01); B29C 48/0011 (2019.02); B29C 48/002 (2019.02); B29C 48/21 (2019.02); B29C 48/34 (2019.02); B29C 48/35 (2019.02); B29C 48/49 (2019.02); B29C 70/527 (2013.01); B29C 70/528 (2013.01); B29D 99/0003 (2013.01); B29C 2043/463 (2013.01); B29C 48/154 (2019.02); B29C 55/30 (2013.01); B29L 2031/001 (2013.01)] | 25 Claims |
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1. An extrusion or pultrusion device for forming a profile product made from a material in a production direction along which the profile product travels, said device comprising:
a rotating die, extending in a radial direction and a width direction, having two opposite first and second side walls and an outer circumferential surface extending in the width direction therebetween, wherein the rotating die comprises a first side portion in connection inward to the first side wall, a second side portion in connection inward to the second side wall, and a mid-portion defining the circumferential surface extending between the first and second side portions, and
a profile definition zone having a longitudinal direction coinciding with the production direction, a height direction, and a width direction being perpendicular to the height direction, and comprising a through channel comprising a first channel section followed by a second channel section downstream the first channel section with reference to the production direction, wherein the rotating die is rotatable about an axis extending across the production direction and arranged to allow the outer circumferential surface to, while the rotating die rotates, exert a pressure onto a surface of the material when fed through the profile definition zone, wherein:
the first channel section is circumferentially delimited by one or more walls,
and wherein:
the second channel section is circumferentially delimited by:
the circumferential surface of the rotating die,
a channel portion comprising
a counter-bearing opposite the rotating die, and
opposing first and second side walls of the channel portion extending between the rotating die and the counter-bearing,
wherein the first channel section is configured to deform the material plastically into a master profile having a maximum height at a predetermined feeding rate dependent on the material and minimum cross-sectional area with a first maximum height of the first channel section, and wherein the second channel section is configured to further deform the material into a final profile continuing in the production direction downstream of the second channel section and having a minimum height by the rotating die being configured to apply increasing pressure on the master profile against the counter-bearing when the master profile exits the first channel section, and
wherein the device comprises at least two inlet channels that connects directly or indirectly to the second channel section, wherein each of the at least two inlet channels is configured to feed one or more materials at a predetermined distance upstream from the second channel section or to a marriage point for the at least two inlet channels in connection to where the first channel section transitions into the second channel section.
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