发明名称 POLYPROPYLENE-BASED MULTILAYERED SHEET AND MOLDED OBJECT
摘要 PROBLEM TO BE SOLVED: To obtain a molded object excellent in color developability, good in thermal moldability in a vacuum molding method or a pressure forming method and uniform in wall thickness by providing a resin compsn. layer comprising a resin compsn. to form a multilayered sheet. SOLUTION: A multilayered sheet has two or more layers and the thickness of a base layer is pref. 50% or more of the total thickness of the multilayered sheet in an aspect of the rigidity or thermal moldability of the sheet and the thickness of colored layer is pref. 0.1 mm or more in an aspect of color developability. In a usual case, the colored layer constitutes the surface of the multilayered sheet but, for the purpose of increasing the glossiness of the multilayered sheet and a molded object obtained by thermally molding the multilayered sheet and preventing the damage of them a colorless transparent layer comprising a propylene homopolymer or a propylene/olefin random copolymer may be further provided on the surface of the colored layer. The multilayered sheet may be formed by providing one or more layer comprising polypropylene or a propylene/olefin copolymer between the base layer and the colored layer.
申请公布号 JP2000334899(A) 申请公布日期 2000.12.05
申请号 JP19990146396 申请日期 1999.05.26
申请人 CHISSO CORP 发明人 SAITO NORIAKI;YAMANAKA YUICHI;AKITAYA SHINICHI;NAKAJIMA TAKANORI
分类号 B32B27/32;B32B27/20;(IPC1-7):B32B27/32 主分类号 B32B27/32
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