Vacuum cleaner filter bag made from recycled plastic

A vacuum cleaner filter bag, comprising a wall surrounding an inner space comprising an air-permeable material and an inlet opening inserted into the wall,

• wherein
• the air-permeable material comprises at least one layer of a nonwoven fabric or one layer of a fiber web that comprises fibers or is composed thereof, said fabric or web comprising one recycled plastic or a plurality of recycled plastics or being composed of one recycled plastic or a plurality of recycled plastics,
• wherein at least a part of the recycled plastic is present in the form of a bicomponent fiber of the core-sheath type (core-core bicomponent fiber), comprising a core of a recycled plastic, wherein the sheath is composed of a fresh plastic, and
• wherein in case of a nonwoven fabric said fibers are bonded by thermally activated bicomponent fibers.