MOISTURE-SHRINKING RESIN MOLDING

摘要

PURPOSE:To obtain the title molding comprising a specified graft copolymer and/or a block copolymer and having specified properties, which has excellent shrink characteristics in a moisture-containing atmosphere and decreases less in strength after absorbing moisture. CONSTITUTION:The title molding comprises a graft copolymer and/or a block copolymer each of which is composed of an ionic resin part and a thermoplastic resin part (e.g. polysodium acrylate/polymethyl acrylate block copolymer), is in a stretched state and shrinks at a relative humidity of 70% or above.