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US 3,949,036 AGranted
Stable blocks formed of shredded paper-like material
AssigneePapakube Corporation
InventorGerald B. Nelson
Life of this patent
Estimating the term…
Abstract
A method of making a stable block from paper comprising providing a plurality of moist paper fragments, roughening the outer surface of a group of the moist paper fragments, and compressing the group of paper fragments to form the group of paper fragments into a stable block without the addition of an adhesive.
Claims20
A method of making stable blocks from paper comprising:
- providing a plurality of moist paper fragments;
- compacting the moist paper fragments in the plurality;
- dividing into compact groups the compacted and moist paper fragments in the plurality;
- roughening the compacted and moist paper fragments in each compact group at the periphery of each such compact group;
- compressing the moist and compacted paper fragments in each compact group to form said compact groups of moist and compacted paper fragments into stable blocks.
2 more elements
A method of making a stable block from paper comprising:
- providing a plurality of moist paper fragments;
- providing a die having a surface defining a die passage which extends through the die, said die passage having a roughened inlet and an outlet;
- and
- extruding the moist paper fragments in the plurality through said die passage from said roughened inlet to said outlet to form a stable block of paper.
1 more element
A method of making stable blocks from paper comprising:
- providing a plurality of paper fragments;
- fluffing the paper fragments in the plurality to substantially prevent the paper fragments being retained together in chunks;
- moistening the fluffed paper fragments in the plurality;
- compacting the moistened paper fragments in the plurality;
- separating into compacted groups the moistened and compacted paper fragments in the plurality;
- roughening the moistened and compacted paper fragments in each compacted group at the periphery of each compacted group;
- and
- extruding each group of the moistened and compacted paper fragments to form stable blocks.
5 more elements
Dependencies are inferred from the claim text.