FLOW PATH FORMING DEVICE AND EXTRUSION MOLDING DEVICE

A flow path forming device including a first flow path forming member and a second flow path forming member that form a tubular flow path through which a plastic composition is allowed to pass to mold the plastic composition. At least one of a flow path forming surface of the first flow path forming...

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Bibliographische Detailangaben
Hauptverfasser: HANATANI, Shinya, TANAKA, Takashi
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A flow path forming device including a first flow path forming member and a second flow path forming member that form a tubular flow path through which a plastic composition is allowed to pass to mold the plastic composition. At least one of a flow path forming surface of the first flow path forming member and a flow path forming surface of the second flow path forming member has a surface roughness parameter Rk of 1.0 μm or more.