POLYPROPYLENE-BASED MULTILAYERED HOLLOW MOLDED OBJECT

摘要

PROBLEM TO BE SOLVED: To enhance color developability and wall thickness uniformity by setting a base layer comprising a resin compsn. based on a specific olefin (co)polymer compsn. on an inner layer side and setting a colored layer compressing a resin compsn. based on an olefin (co)polymer compsn. having different characteristics on a surface layer side. SOLUTION: A base layer comprising a resin compsn. [I] based on an olefin (co)polymer compsn. (I) is set on an inner layer side and a colored layer consisting of a resin compsn. [II] containing a resin compsn. based on an olefin (co)polymer compsn. (II) having characteristics different from those of the compsn. (I) and a colorant is set on a surface layer side. The olefin (co)polymer compsn. (I) is based on a propylene/olefin copolymer and has an intrinsic viscosity of 2.0-4.0 dl/g. The olefin (co)polymer compsn. (II) is based on a propylene/ olefin random copolymer and the content of a main monomer polymn. unit thereof is set to 90 wt.% or less.