| abstract |
The invention discloses a fully biodegradable high-barrier sheet for coffee capsule cups and a preparation method thereof, and relates to the technical field of packaging materials. Sheet, the sheet has a five-layer structure, including an inner film layer, an adhesive layer provided on both sides of the inner film layer, and a substrate layer provided on the side of the adhesive layer away from the inner film layer; the raw material of the inner film layer Including high-barrier degradable resin; the raw material of the adhesive layer is degradable adhesive resin; the raw material of the base material layer is fully degradable plastic; the high-barrier degradable resin is BVE8049 provided by Japan Synthetic Chemical; the The degradable adhesive resin is BTR8002P provided by Nippon Synthetic Chemical. The sheet of the present invention has excellent degradability, water and oxygen barrier properties, fragrance retention, better impact resistance and thermal deformation resistance. |