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    • 3. 发明公开
    • EXPANDED PARTICLES OF POLYLACTIC ACID-BASED RESIN, AND MOLDINGS OF THE EXPANDED PARTICLES
    • 多达GEFORMTEGEGENSTÄNDE的EXPANDIERTEPOLYMILCHSÄURE-HARZPARTIKEL
    • EP2573133A1
    • 2013-03-27
    • EP11783328.5
    • 2011-03-24
    • JSP Corporation
    • SHINOHARA MitsuruOIKAWA Masaharu
    • C08J9/16
    • C08J9/122C08J9/16C08J9/18C08J9/232C08J2205/052C08J2367/02Y10T428/2989
    • The present invention is aimed at the provision of polylactic resin expanded beads that are suited to be molded in a mold and that permit stable production of a polylactic resin expanded beads-molded article having excellent fuse-bonding between the expanded beads without being restricted by the desired shape of the expanded beads-molded article. The polylactic resin expanded bead is formed of a polylactic resin as a base resin and is characterized in that an endothermic calorific value (Br:endo) [J/g] of the whole expanded bead, an endothermic calorific value (Brs:endo) [J/g] of a surface region of the expanded bead and an endothermic calorific value (Brc:endo) [J/g] of a center region of the expanded bead, as determined under specific Condition 1 in accordance with heat flux differential scanning calorimetry stipulated in JIS K7122(1987), meet the following formulas (1) and (2): Br : endo > 25 Brc : endo > Brs : endo ≥ 0
    • 本发明的目的在于提供适合于在模具中成型的聚乳酸树脂发泡珠粒,并且能够稳定地生产具有优异的膨胀珠粒之间的熔融粘合的聚乳酸树脂发泡珠粒成型体,而不受 所需形状的发泡珠成型制品。 聚乳酸树脂膨胀珠由聚乳酸树脂作为基础树脂形成,其特征在于,整个发泡珠的吸热量(Br:endo)[J / g],吸热热值(Brs:endo)[ J / g]和根据热通量差示扫描量热法在特定条件1下测定的发泡珠的中心区域的吸热量(Brc:endo)[J / g] 在JIS K7122(1987)中规定,符合下列公式(1)和(2):Br:endo> 25 Brc:endo> Brs:endo‰¥0