Polypropylene-type resin pre-expanded particles, and method for producing said pre-expanded particles

Pre-expanded polypropylene-based resin particles include a polypropylene-based resin. The polypropylene-based resin satisfies tan δ≤0.32×V+0.1, where tan δ represents a loss tangent at an angular frequency of 0.1 rad/s in dynamic viscoelastic behavior measurement at 200° C. and V represents a melt f...

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Bibliographische Detailangaben
Hauptverfasser: Nakayama, Ryoji, Kutsumizu, Ryuta
Format: Patent
Sprache:eng
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Zusammenfassung:Pre-expanded polypropylene-based resin particles include a polypropylene-based resin. The polypropylene-based resin satisfies tan δ≤0.32×V+0.1, where tan δ represents a loss tangent at an angular frequency of 0.1 rad/s in dynamic viscoelastic behavior measurement at 200° C. and V represents a melt fracture take-up speed (m/min) at 200° C.