Method and apparatus for waste paper treatment
OwnerIvar H. Stockel, Willard E. Carlsoninventors
Life of this patent
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Abstract
A method and apparatus for reclaiming cellulosic fibers from a bale containing waste papers, in which the bale is positioned in a treatment enclosure, and the enclosure is placed under a vacuum. A treating fluid is drawn into the enclosure, which penetrates the bale interior spaces, and produces a preferential swelling-of uncontaminated cellulosic fibers. After the treating fluid is withdrawn from the enclosure, a slurrying fluid is passed through the bale contents, to form a fiber-fluid suspension slurry.
Claims27
An apparatus for treating cellulosic fibers from a bale containing waste papers, said apparatus comprising:
- a base;
- an annular upstanding wall, having an upper end and a lower end, said annular wall having a raised position wherein its lower end is spaced away from said base and a lowered position, wherein its lower end is seated on said base;
- said annular wall cooperating with said base to form a columnar enclosure for containment of said bale when said annular wall is in its lowered position;
- a piston slidably positioned within said annular wall for vertical motion therealong;
- said piston being movable downwardly within said annular wall to exert a mechanical force on the contained bale;
- means for applying a vacuum to said columnar enclosure;
- and means for passing at least one fiber-treating fluid into and out of said columnar enclosure.
The apparatus, as described in claim 7, further comprising a fluid nozzle means located on the upper end of said post for directing a jet of fluid upwardly into said bale facilitating passage of said post through the contained bale.
An apparatus for extracting cellulosic fibers from a bale containing waste paper, said apparatus comprising:
- a base and an annular upstanding wall cooperatively defining a columnar enclosure for containment of said bale,
- said enclosure comprising a hood structure adapted for being raised and lowered relative to said base with said annular wall forming a part of said hood;
- means for applying a vacuum to said enclosure;
- means for passing at least one fiber-ring fluid into and out of said enclosure;
- means for introducing a slurrying fluid into said enclosure;
- and means for withdrawing a fiber-fluid slurry from said enclosure.
An apparatus for treating cellulosic fibers in a bale containing waste paper, said apparatus comprising:
- a base and an annular upstanding wall cooperatively defining a columnar enclosure for containment of said bale,
- said enclosure comprising a hood structure adapted for being raised and lowered relative to said base with said annular wall forming a part of said hood structure;
- means for applying a vacuum to said enclosure;
- and means for passing at least one fiber-treating fluid into and out of said enclosure.
In a waste material recycling installation for recovering paper fibers from waste paper contained in waste material packaged in bale form, including means for the wetting impregnation of said bale with a cellulosic fiber softening and swelling fluid to a sufficient degree as establishes a debonding swelling of cellulosic fibers of said bale and means for extracting from the fluid impregnated bale a pulp slurry of the swollen debonded cellulosic fibers, the improvement wherein said wetting impregnation means comprises:
- a chamber internally sized to contain said bale and adapted to receive said bale and seal the interior of said chamber containing said bale from the atmosphere, said chamber comprising:
- a base and a vertically displaceable hood having a top portion extending transversely of a columnar annular wall portion vertically depending below said hood top portion and cooperating with said base in defining said chamber when said hood is in a lowered position with the lower end of the hood wall portion in contact with said base and
- means vertically displacing said hood between said lowered position and a raised position in which said hood wall lower end is spaced above said base;
- means establishing a vacuum pressure within said chamber;
- means introducing into and retaining in said chamber said softening and swelling fluid for establishing said debonding swelling of the cellulosic fibers in said bale;
- and said slurry extracting means comprises:
- means introducing a slurrying fluid into said chamber into contact with the contents of the swelling fluid impregnated bale and
- means for withdrawing from said chamber cellulosic fiber containing slurry resulting from contact of said slurrying fluid and the waste paper debonded swollen fibers.
Dependencies are inferred from the claim text.