| abstract |
The present invention relates to an eco-friendly coffee packaging multilayer film having excellent oxygen barrier properties and composting, and more specifically, polylactic acid (PLA), polycaprolactone, polyglycolic acid, polybutylene succinate, polybutylene adipate , Polyhydroxybutyrate (PHB), poly-3-hydroxyvalerate (PBV), polyhydroxybutyrate valerate (PHBV), poly-3-hydroxybutyrate- Poly-3- (3-hydroxybutyrate-co-3-hydroxyvalerate), poly-3-hydroxybutyrate-co-3-hydroxyhexanoate (poly- (3-hydroxybutyrate-co- 3-hydroxyhexanoate) selected from the group consisting of one or more biodegradable resins and polybutylene adipate-co-butylene terephthalate (PBAT) or polyethylene carbonate (PEC) 50 to 70% by weight: 50 to 30% by weight By weight ratio of It is composed of a base film layer formed of an organic-inorganic hybrid resin in which nano montmorillonite is dispersed in a mixed resin composition, and an oxygen barrier coating layer coated on an upper surface of the base film layer; and excellent oxygen barrier properties. It is related to a multi-layered film for eco-friendly coffee packaging with compostability and excellent mechanical strength while being biodegradable. |