THERMOPLASTIC ELASTOMER FOAM PARTICLES AND MOLDED BODY OF SAME

The present invention relates to cylindrical expanded thermoplastic elastomer beads provided with through-holes, the expanded thermoplastic elastomer beads including a core layer in an foamed state constituted of a base polymer containing a thermoplastic elastomer and a cover layer covering the core...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAGI, Shota, HIRA, Akinobu
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to cylindrical expanded thermoplastic elastomer beads provided with through-holes, the expanded thermoplastic elastomer beads including a core layer in an foamed state constituted of a base polymer containing a thermoplastic elastomer and a cover layer covering the core layer and constituted of a thermoplastic polymer, wherein a coefficient of dynamic friction of the thermoplastic polymer is 0.8 or less, and a difference between a melting point (Tmc) of the base polymer and a melting point (Tms) of the thermoplastic polymer is -20°C or more and 20°C or less. The present invention also relates to an expanded thermoplastic elastomer beads molded article formed by subjecting expanded thermoplastic elastomer beads provided with through-holes to in-mold molding, the molded article including a core layer in a foamed state and a cover layer covering the core layer, wherein a voidage is 15% or more, a density is 10 kg/m3 or more and 200 kg/m3 or less, and the product of a tensile strength (MPa) and a tensile elongation (%) is 5 or more.