POLYOLEFIN RESIN COMPOSITE LAMINATE

摘要

A polyolefin resin composite laminate comprising a polyolefin resin expanded sheet having a expansion ratio of 3 to 20 and a compression modulus of 5 Mpa or more and, laminated on at least one surface thereof, a polyolefin resin sheet having been uniaxially stretched by a factor of 10 or more and having a tensile modulus of 5Mpa or more. The composite laminate can be produced by a method comprising providing an expandable sheet comprising a polyolefin resin modified with a modifying monomer and a chemical blowing agent of heat decomposition type, laminating a face material capable of suppressing the expansion of the sheet to an in-plane direction on at least one surface of the sheet, and then expanding the sheet by heating. The composite laminate is lightweight, and has high rigidity and dimensional stability.