Recycled Plastic Vacuum Cleaner Filter Bags

The patent changes the material composition parameter by using recycled plastics (rPET, rPP) instead of virgin thermoplastics. This maintains the functional properties of the nonwoven filter bags while improving ecological sustainability. The recycled materials are processed to achieve the required fiber properties for effective dust separation.

The patent recovers and reuses plastic materials that would otherwise be discarded as waste. By collecting and processing recycled plastics into fibers for filter bag production, it creates a circular economy approach that improves ecological sustainability without compromising the separation performance of the filter bags.

The patent changes the material source parameter from virgin plastics to recycled plastics. Recycled materials are generally less expensive than virgin materials, thus reducing manufacturing costs while maintaining the required separation performance through proper material processing and nonwoven structure optimization.

The patent uses recycled materials that provide cost-effective alternatives to expensive virgin materials. The filter bags maintain adequate service life for disposable application while being manufactured from lower-cost recycled content, improving overall cost-effectiveness.

The patent divides the filter bag into multiple functional layers, each with specific properties optimized for particular functions (support, dust storage, filtration). This segmentation allows each layer to be relatively simple in structure while the combination achieves high mechanical strength and effective dust storage capacity.

The patent uses composite nonwoven structures combining different fiber types and configurations in multiple layers. These composite materials provide enhanced mechanical strength and dust storage capacity while maintaining manageable complexity through systematic layer design.