Patent ID: 11969972
Assignee: SPC SUNFLOWER PLASTIC COMPOUND GMBH
Field: Surface technology, coating (Chemistry)
Classification: CPC B  Y | IPC B

Claim 0:
1. A multilayer film as packaging for at least one of food containers, drinks capsules, and coffee capsules, wherein the film consists of at least one first layer, at least one second layer, and at least one third layer, wherein
the at least one first layer consists of porous filter paper having a thickness of about 40 to 100 μm,
the at least one second layer consists of a gas-impermeable film, wherein the gas-impermeable film consists of cellulose acetate and/or regenerated cellulose and forms a layer coated on one and/or both sides with polyvinylidene chloride, wherein the at least one second layer has a thickness in the range between 10 μm and 30 μm and the at least one second layer follows the at least one first layer, and
the at least one third layer consists of porous filter paper having a thickness of about 30 to 100 μm and the at least one third layer follows the at least one second layer.