Filter bag cuff

The method of forming a cuff on a filter bag, said bag comprising an essentially tubular, elongated fabric body, said fabric body having a first end and a second end, said first end being closed and said second end being open, said second end terminating in a cuff having disposed therein a first ring member and a second ring member, wherein at least one of said ring members is fabric-encased, which comprises emplacing said first ring member around said bag and turning back the edge of said second end over said first ring member thereby forming a cuff, emplacing said second ring member around said bag above said cuff-enclosed first ring member, turning back said cuff having said first ring member disposed therein over said second ring member and stitching said cuff to said bag between said first and second ring members.

A filter bag comprising an essentially tubular, elongated fabric body, said fabric body having a first and a second end, said first end being closed and said second end being open, said second end terminating in a cuff, said cuff having disposed therein a first ring member and a second ring member, said cuff having been formed by emplacing said first ring member around said bag and turning back the edge of said second end over said first ring member, thereby forming a cuff, emplacing said second ring member around said bag above said cuff-enclosed first ring member, turning back said cuff having said first ring member disposed therein over said second ring member, and stitiching said cuff to said bag between said first and second ring members.