Abstract: A particle reduction device with a housing containing an inlet for receiving paper material into a flow chamber, at least two adjacently spaced particle reduction stages through which paper material flows from one stage to the other for reducing the particle size of the material, and an outlet for outputting processed material with reduced particle size. Each particle reduction stage of the paper particle reduction device includes an impact member that rotates about a central shaft for impacting material into smaller particles. At least one of the stages has a screen, located downstream from the impact member, that includes perforations through which particles of a sufficiently small size can pass.

Abstract: A particle reduction device comprising: a housing containing an inlet for receiving material into a flow chamber, at least two adjacently spaced particle reduction stages through which material flows from one stage to the other for reducing the particle size of the material, and an outlet for outputting processed material with reduced particle size; each particle reduction stage having an impact member that rotates about a central shaft for impacting material into smaller particles; wherein at least one of the stages has a screen located downstream from the impact member, the screen having perforations through which particles of a sufficiently small size can pass.

Abstract: A process and apparatus for producing a paper product, in which paper (M) in a particular form, and mixed with water, is subjected to pressure to form a compacted mass which involves, or includes, depositing the mix onto a first conveyor belt (10) and then progressively forming the conveyor belt into an upwardly open U-shape configuration and compressing the mix by means of a second conveyor belt (20) guided to progressively enter the first conveyor belt and progressively compact the mix.