Patent ID: 9309384
Filing Date: 2016-04-12
CPC Classification: C08J,C08K

Claim Text:
1. Polyethylene resin foamed particles comprising, as a base resin, a polyethylene resin composition which contains, in an amount of not less than 1000 ppm to not more than 4000 ppm in total, compounds selected from the group consisting of antioxidant, metal stearate, and inorganic substance, the polyethylene resin foamed particles having a Z-average molecular weight of not less than 40×10 wherein the antioxidant includes a phosphorus-based antioxidant and a phenol-based antioxidant, an amount of the phosphorus-based antioxidant contained in the polyethylene resin composition is not less than 500 ppm to not more than 1500 ppm, and a ratio of the amount of the phosphorus-based antioxidant to an amount of the phenol-based antioxidant in the polyethylene resin composition (the amount of the phosphorus-based antioxidant/the amount of the phenol-based antioxidant) is not less than 2.0 to not more than 7.5, and wherein the inorganic substance is in an amount of not less than 300 ppm to not more than 2500 ppm.