Patent ID: 7100862

Claim:
A roll-up machine for rolling up a compressible material comprising: three continuous belts defining a circular cavity and establishing generally circumferential contact with said compressible material so that said compressible material is under compressive pressure as it is being rolled; each of said three continuous belts providing only a portion of the circumference of said circular cavity; means for putting said three continuous belts under a desired level of tension; means for driving said three continuous belts to rotate said compressible material within said circular cavity; six sufficiently stiff forming rollers, two for each of said three continuous belts, for defining said circular cavity; means for coordinating the positions of said six forming rollers, to maintain the shape of said circular cavity as said compressible material is fed into said circular cavity; and means for feeding said compressible material into said circular cavity through an entry zone between forming rollers of two of said three continuous belts.