TH165800B - Polypropylene resin foam particles, molded polypropylene resin foam objects, and a method for producing the same. - Google Patents

Abstract

New Request Update 20/02/2016 Polypropylene resin foam particles (polypropylene resin) where the base material resin contains poly A randomized propylene copolymer with the ratio of mean molecular weight -Z Mz to mean molecular weight by the number of Mn, Mz / Mn 20 or more and 300 or less, melting rate of 5 g. / 10 min or more and 20 g / 10 min or less, melting strength of 2.5 centi Newton or less, desirable to be 1.5 centi Newton or less, and the bend modulus. 600 Mpa Pascal or more and 1600 Mpa Pascal or less, Desirable is 1300 Mpa or more and 1600 Mpa or less, and Desirable is at least Second Melting calorific area was measured according to differential scanning caloric method. The meter can provide a foam molding object in a mold, such as a turnover package with a short molding cycle at In-mold foam molding and beautiful surface properties; And has excellent formability Even if internal pressure greater than atmospheric pressure is not provided to the particle. Or particles contained in the mother Printed without gassing during the molding of the foam in the mold.

Claims (1)

New Request Update 20/02/2016 1. Polypropylene resin foam particles. (polypropylene resin) where the resin base material is combined With randomized polypropylene copolymer with the ratio of mean molecular weight by -Z Mz to mean molecular weight by the number of Mn, Mz / Mn 20 or more and 300 or less; Melting rate, flow 5 g / 10 min or more and 20 g / 10 min or less; Melting strength of 2.5 centi Newton or less; And the bend modulus 600 ° F