Patent ID: 9512265
Filing Date: 2016-12-06
CPC Classification: B29C,B32B,C08G,C08J,Y10T

Claim Text:
1. A foam sheet, comprising: one or more resin layers comprising a non-crystalline polylactic acid; and forming cells, wherein the non-crystalline polylactic acid is cross-linked, and each of the foaming cells has a closed structure, wherein each of the one or more resin layers is formed from a biodegradable resin composite comprising 0.001˜10 parts by weight of a cross linking agent, 0.1˜10 parts by weight of a foaming agent, per 100 parts by weight of the non-crystalline polylactic acid, wherein the cross linking agent is one or more of organic peroxides selected from perbutyl peroxide, and t-butylethylhexylmonoperoxy carbonate, wherein the biodegradable resin composite further comprises a plasticizer, a co-foaming agent and a co-crosslinking agent, wherein the content of the plasticizer is 40˜100 parts by weight per 100 parts by weight of the non-crystalline polylactic acid, wherein the co-foaming agent comprises one or more elements selected from zincneodecarbonate, potassiumneodecarbonate, and zinc 2-ethylhexanoate, wherein the content of the co-foaming agent is 10.0 or less parts by weight per 100 parts by weight of the non-crystalline polylactic acid, wherein the content of the co-crosslinking agent is 1.0 or less parts by weight per 100 parts by weight of the non-crystalline polylactic acid, and wherein the co-crosslinking agent comprises triallyl isocyanurate(TAIC).