WO1992017276A1 - Matiere cellulosique hydrophobe et procede de production - Google Patents

Matiere cellulosique hydrophobe et procede de production Download PDF

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Publication number
WO1992017276A1
WO1992017276A1 PCT/US1992/002651 US9202651W WO9217276A1 WO 1992017276 A1 WO1992017276 A1 WO 1992017276A1 US 9202651 W US9202651 W US 9202651W WO 9217276 A1 WO9217276 A1 WO 9217276A1
Authority
WO
WIPO (PCT)
Prior art keywords
cardboard
hammer mill
product
waxed
introducing
Prior art date
Application number
PCT/US1992/002651
Other languages
English (en)
Inventor
Charles R. Lohr
Original Assignee
American Cellulose Manufacturing, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cellulose Manufacturing, Inc. filed Critical American Cellulose Manufacturing, Inc.
Publication of WO1992017276A1 publication Critical patent/WO1992017276A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
    • A01K1/0152—Litter
    • A01K1/0155—Litter comprising organic material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/32—Hammer mills
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary fibres

Definitions

  • This invention relates to the provision of hydrophobic material manufactured from scrap waxed cardboard and/or a combination of the waxed cardboard and waste paper.
  • Two products have been invented, one a kitty litter product and the other a product which absorbs oil.
  • the invention relates to the ongoing search to recycle materials and to provide means for cleaning oil waste such as in garages and plants using heavy machinery and the like.
  • the invention deals particularly with waxed boxes of the type used for meat and poultry as well as of the type used for vegetables and fruit.
  • waxed cardboard is of two types.
  • Curtain coated cardboard is commonly used in boxes for meat and poultry wherein meat juices and the like would soak through unwaxed cardboard.
  • a heavy wax coating in the form of a curtain is laid onto the cardboard, hence the name curtain coating.
  • This type of cardboard box may be curtain coated on one or on both sides.
  • the other type of waxed cardboard commonly used is saturated cardboard which is commonly used for fruit and vegetable boxes where the amount of moisture encountered is less.
  • the oil absorbing product of this invention may be made with either or both of the curtain coated or saturated cardboard whereas the kitty litter product hereinafter described must be made with at least a certain amount of curtain coated waxed cardboard.
  • the highly oil absorbent material hereinafter described is made principally from waxed cardboard and may be made from any combination of single or double sided curtain coated cardboard or saturated cardboard.
  • the material in its final form is a fluffy slightly hydrophobic and hydrophilic cellulosic material having wax distributed or bonded throughout the fluffy cellulose fibers.
  • the oil absorbing material is made by introducing the feedstock of curtain coated or saturated wax cardboard into a hammer mill. The product which comes out of the hammer mill is physically altered and perhaps chemically altered in the sense that the waxed cardboard entering the hammer mill is slightly hydrophilic but the material which exits the hammer mill is slightly hydrophobic.
  • waste or scrap waxed cardboard is torn, cut or shredded into smaller pieces and introduced into one of two serially connected hammer mills each operating at 3600 rpm.
  • the material exits the first hammer mill and is introduced into a second hammer mill for further processing.
  • the product enters the second hammer mill, it is passed through a 3/8" mesh screen after which the product is in its final fluffy slightly hydrophobic condition.
  • the material may be then packaged in a variety of configurations and used to absorb oil in garages, machine shops and the like.
  • the material may be used as a loose fill or it may be packaged in cylinders such as a tube sock and used for dams in oil spills on oceans or lakes.
  • the product is extremely oil absorbent.
  • the kitty litter product is an improvement over present kitty litter products which are made of fullers earth because fullers earth is not combustible and thereby presents an environmental disposal problem not encountered with the present product.
  • curtain coated waxed cardboard In order to make a kitty litter product according to the present invention, curtain coated waxed cardboard must be used rather than the saturated material previously discussed.
  • the curtain coated waxed cardboard is mixed with normal waste paper which may be newspaper, any other waste paper available, magazine slicks or any combination thereof.
  • a disadvantage with magazine slicks is that they contain fullers earth and so to a small degree there will be a residue remaining whereas except for the fullers earth present in magazine slicks, the material is completely combustible in any commercial incinerator.
  • the mixture which is fed to the hammer mill as previously described is paper and waxed curtain coated cardboard present in an amount not less than about 1% by weight and preferably about 5% by weight.
  • the preferred mixture is 95% by weight paper and 5% by weight curtain coated cardboard which is fed into successive hammer mills.
  • the product in the second hammer mill is then forced through 3/8" screen and is transported therefrom to a machine which is used to form a dense solid product such as a pellet.
  • a pellet is preferred for the kitty litter product
  • a normal extrusion die is used to produce, for instance, a 5/16" diameter by 1" long pellet. It is understood that pellets of various lengths and diameters may be used as desired.
  • briquettes may be formed of the material which is forced through the 3/8" screen and this may also be advantageous for the kitty litter product.
  • the kitty litter product of the present invention in the form of 5/16" x 1" pellets is advantageous because the material is slightly hydrophobic and retains its integrity in water. When used as a kitty litter, this means that the cat urine will seep farther down into the kitty litter before being absorbed while the feces remains at or near the top even after being buried by the animal. Because it is the contact of the urine with the feces which produces an offensive "cat box" odor, this kitty litter is advantageous over presently available kitty litters in that the subject invention serves to separate the urine from the feces.
  • another advantage to the present invention is that the kitty litter formed from this invention is completely combustible in a commercial incinerator thereby leaving no residue for disposal.
  • the material will retain its integrity even when exposed to urine or water and will not disintegrate as will newspaper when wet. Even though the product may be from 95% to 99% paper, it sill retains its form and shape upon exposure to moisture.
  • the kitty litter such as perfumes, or other additives.
  • Tests with the kitty litter have shown that the pellets can be produced as dense solids having a density in the range of from about 2 lbs. per cubic foot to about 14 lbs. per cubic foot.
  • products with varying moisture content may be produced and it is well within the scope of this invention to produce products with predetermined moisture content.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Paper (AREA)
  • Peptides Or Proteins (AREA)

Abstract

Procédé de production d'une matière absorbant l'huile, consistant à introduire du carton ciré dans un broyeur à marteaux pour produire une matière cellulosique hydrophobe et/ou hydrophile pelucheuse où la cire est répartie entre les fibres de cellulose pelucheuses, et matière ainsi produite. Est également décrit un procédé de production de litière absorbante consistant à introduire un mélange de papier et de carton ciré couché par voile dans un broyeur à marteaux et à façonner le produit sortant du broyeur en un solide dense. L'invention se rapporte également au produit obtenu, sous forme de boulettes ou de briquettes.
PCT/US1992/002651 1991-04-05 1992-04-02 Matiere cellulosique hydrophobe et procede de production WO1992017276A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68157591A 1991-04-05 1991-04-05
US681,575 1991-04-05

Publications (1)

Publication Number Publication Date
WO1992017276A1 true WO1992017276A1 (fr) 1992-10-15

Family

ID=24735867

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/002651 WO1992017276A1 (fr) 1991-04-05 1992-04-02 Matiere cellulosique hydrophobe et procede de production

Country Status (2)

Country Link
CA (1) CA2084766A1 (fr)
WO (1) WO1992017276A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296215A (en) * 1994-12-20 1996-06-26 Pope Apparatus and process for forming pellets from waste absorbent material by shredding,pressing into pellets and distribution or storage

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203388A (en) * 1976-03-31 1980-05-20 Brown Company Animal litter and process
US4378756A (en) * 1979-09-10 1983-04-05 Recycled Paper Bedding, Inc. Animal bedding, process and apparatus for preparing the same
US4486501A (en) * 1979-07-31 1984-12-04 Kjeld Holbek Process for the preparation of fibers
US4560527A (en) * 1984-04-24 1985-12-24 Kimberly-Clark Corporation Method of making agglomerated cellulosic particles using a substantially horizontal rotating drum
US4730790A (en) * 1987-01-05 1988-03-15 Williams Patent Crusher And Pulverizer Company Waste material classifying and reducing apparatus
EP0272950A1 (fr) * 1986-11-17 1988-06-29 Sibille S.A. Procédé de préparation, à partir de boues de papeterie, d'un produit en particules, absorbant bien les liquides
FR2618641A1 (fr) * 1987-07-27 1989-02-03 Tranie Bernard Granules cellulosiques pour litieres pour animaux domestiques
US4804695A (en) * 1987-09-03 1989-02-14 Western Fibers, Inc. Method and composition for producing and installing cellulosic installation
CH672971A5 (en) * 1987-01-15 1990-01-31 Fritz Keller Cat litter material - comprises granulate formed from shredded waste-paper bonded with plastic and/or natural prod. e.g. gum arabic
US5064126A (en) * 1987-05-06 1991-11-12 Formark Pty. Limited Shredder
US5100600A (en) * 1989-12-09 1992-03-31 Fritz Keller Method of making an absorbent paper-containing granulate

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203388A (en) * 1976-03-31 1980-05-20 Brown Company Animal litter and process
US4486501A (en) * 1979-07-31 1984-12-04 Kjeld Holbek Process for the preparation of fibers
US4378756A (en) * 1979-09-10 1983-04-05 Recycled Paper Bedding, Inc. Animal bedding, process and apparatus for preparing the same
US4560527A (en) * 1984-04-24 1985-12-24 Kimberly-Clark Corporation Method of making agglomerated cellulosic particles using a substantially horizontal rotating drum
EP0272950A1 (fr) * 1986-11-17 1988-06-29 Sibille S.A. Procédé de préparation, à partir de boues de papeterie, d'un produit en particules, absorbant bien les liquides
US4730790A (en) * 1987-01-05 1988-03-15 Williams Patent Crusher And Pulverizer Company Waste material classifying and reducing apparatus
CH672971A5 (en) * 1987-01-15 1990-01-31 Fritz Keller Cat litter material - comprises granulate formed from shredded waste-paper bonded with plastic and/or natural prod. e.g. gum arabic
US5064126A (en) * 1987-05-06 1991-11-12 Formark Pty. Limited Shredder
FR2618641A1 (fr) * 1987-07-27 1989-02-03 Tranie Bernard Granules cellulosiques pour litieres pour animaux domestiques
US4804695A (en) * 1987-09-03 1989-02-14 Western Fibers, Inc. Method and composition for producing and installing cellulosic installation
US5100600A (en) * 1989-12-09 1992-03-31 Fritz Keller Method of making an absorbent paper-containing granulate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296215A (en) * 1994-12-20 1996-06-26 Pope Apparatus and process for forming pellets from waste absorbent material by shredding,pressing into pellets and distribution or storage

Also Published As

Publication number Publication date
CA2084766A1 (fr) 1992-10-06

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