Patent ID: 9505894
Filing Date: 2016-11-29
CPC Classification: B29C,B29K,B32B,C08F,C08J,C08L,Y10T

Claim Text:
1. A polypropylene-based resin foamed sheet obtained by extruding a foam molding resin comprising: (X) 5 to 99% by weight of a polypropylene resin comprising a structure with long chain branches, 0.05 to 6.0 parts by weight of a blowing agent, based on 100 parts by weight of said foam molding resin; and (Y) 1 to 95% by weight of a sequentially polymerized propylene-based block copolymer wherein said resin (Y) comprises: said resin (X) has: (X-i): a melt flow rate (MFR) of 0.1 to 30.0 g/10 minutes, (X-ii): a molecular weight distribution Mw/Mn of 3.0 to 10.0 measured by GPC and Mz/Mw of 2.5 to 10.0, (X-iii): a melt tension (MT) (unit: g) where (X-iv): a content of p-xylene soluble components (CXS) at 25° C. of less than 5% by weight based on the total amount of said resin (X), and wherein said block copolymer (Y) has: (Y-i): a weight ratio of 50 to 99% of (Y-1) and 1 to 50% of (Y-2) where said ratio is calculated based on the total weight of said block copolymer (Y) regarded as 100% by weight, and (Y-ii): an MFR of said block copolymer (Y) of 0.1 to 200.0 g/10 minutes, (Y-iii): a melting point of said block copolymer (Y) of more than 155° C., (Y-iv): an ethylene content of said (Y-2) of 11.0% or more and less than 60.0% by weight, wherein said ethylene content is calculated based on the total weight of monomers comprising (Y-2) regarded as 100% by weight, and (Y-v): the intrinsic viscosity [η] of said (Y-2) measured at 135° C. in decalin is