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7618517 |
Method and apparatus for monitoring liquid and solid contents in a froth
A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation...
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7544271 |
Open flotation de-inking module for recycled paper
Disclosed is an open flotation de-inking module for recycled paper comprised of a flotation cell having an injector module and air control module used in conjunction to infuse micro air bubbles...
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7537674 |
Closed floatation de-inking module for recycled paper
Disclosed is a closed floatation conventional de-inking process adopted in the recycled paper processing plants, in which, ink separation and removal constitutes a major task. The specific concerns...
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7381305 |
Method and apparatus for monitoring liquid and solid contents in a froth
A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation...
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7377993 |
Methods for reducing fluorescence in pulp and paper
Methods for reducing, and in some cases eliminating, fluorescence in pulp and paper, as well as the resulting articles, are provided. The methods destroy fluorescent activity of agents (e.g.,...
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7306697 |
Used paper diaper processing method and used paper diaper processing device
The present invention provides a used paper diaper processing method comprising: a swell suppressing step for immersing a used paper diaper in a swell suppressant solution to suppress the swelling...
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7297224 |
Method of deinking waste paper using cellulase without lowering paper strength and method of evaluating the same
A deinking method using a cellulase which enables the load upon the environment to be reduced; and an evaluation method whereby a cellulase effective in deinking and the effective addition level of...
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7282113 |
Method for enzymatic deinking of waste papers, the waste papers so treated and the treating composition
The present invention relates to a deinking composition and a method of deinking wastepaper by using a mixture of enzymes that act on constituents of all three waste paper components involved in...
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7279073 |
Apparatus for liquid-based fiber separation
An apparatus for treating fibrous material is disclosed. The apparatus may include a fiber separator, a de-liquefier, a dry-to-wet blender and a flash dryer. The fiber separator may be a...
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7267743 |
Wax emulsion coating applications
Waxes prepared from hydrogenated plant oils, such as castor, palm, and soybean, are used to prepare water based emulsions. The inventive waxes, obtained from naturally derived, renewable resources,...
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7169257 |
Method of deinking waste paper using a reduced alkali system
The present invention relates to methods and compositions for deinking waste paper, optionally in non-alkaline or low-alkaline systems. Deinking compositions are provided that include a blend of an...
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7125471 |
Papermaking process using enzyme-treated sludge, and products
Enzyme-treated papermaking sludges are provided, as are methods of making the enzyme-treated sludge. Papermaking processes that incorporate the enzyme-treated papermaking sludges into papermaking...
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6969443 |
Method of making absorbent sheet from recycle furnish
A process for making absorbent sheet material from recycle furnish includes treatment with a synergistic debonder composition. The debonder is capable of reducing tensile strength by 40 percent or...
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6905028 |
Method of separation by altering molecular structures
Method of separation that uses at least one organic chemical reaction to alter the molecular structure of a substance or substances ( 102 ) so that a mechanical method of separation can be used to...
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6784146 |
Deinking method and composition for wastepaper
The present invention is a deinking method and composition that uses at least 50% by weight based on the total weight of surfactants of non-ionic, C16 to C25 aliphatic, monohydric alcohol...
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6666950 |
Process for deinking paper using a triglyceride
A method is provided for deinking paper. Repulped paper is treated with a deinking comprising a triglyceride. A preferred triglyceride is beef tallow. The deinking composition reduces foaming and...
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6656324 |
Method for removing wax from a pulp furnish
A method for removing wax from a pulp furnish is disclosed. The method is effective for removing wax from a pulp furnish containing waxed old corrugated containers (OCC). In the method, the pulp...
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6623658 |
Additive for controlling secondary contaminates
An additive for controlling the detrimental effects of secondary recycled contaminants in the papermaking process. In the preferred embodiment, the additive includes a first low molecular weight,...
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6576083 |
Deinking of waste paper
In the production of pulp and paper from starch-containing paper, the deinking effect can be improved by including treatment with both a starch-degrading enzyme and a pectate lyase. The process...
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6565708 |
Paper quality improver composition for papermaking
The present invention provides a paper quality improver composition for papermaking, which is excellent in improved efficiencies of bulky value, brightness, opacity and the like of pulp sheet,...
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6544383 |
Flotation deinking process
The removal of inks from a pulp fiber slurry is accomplished by use of a combination of (1) a polyester obtained through reaction between di and/or tricarboxylic acids and/or anhydrides thereof and...
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6524435 |
Method and composition for dispersing hydrophobic particles in aqueous suspensions
A method of dispersing hydrophobic particles in aqueous suspensions comprising adding to the suspension an effective amount of an ethylene oxide-propylene oxide block copolymer, wherein the...
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6488808 |
Styrene copolymers in de-inking
Provided herein are compositions of matter useful in de-inking secondary fibers. A composition according to the invention includes an aqueous solution of an anionic form of a styrene-methacrylic...
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6458240 |
Method for removing contaminants from fibers in recycle fiber pulping
An improved process for the separation of cellulosic fiber from difficult to process coated and inked paper products is disclosed and claimed. This process readily separates the paper pulp fraction...
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6451063 |
Cellulase for use in industrial processes
A method for treating cellulosic materials is disclosed which comprises contacting the cellulosic material with a cellulase obtainable from Thermomonospora fusca corresponding to E5 or a...
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6441240 |
Method for inhibiting the deposition of white pitch in paper production
Ethyleneamine compound(s), or mixtures thereof, are used in effective amounts to reduce or inhibit the deposition of white pitch on the paper making equipment during the processing to recycle...
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6432262 |
Method of bleaching recycled papers with hydrogen peroxide stabilized with a methylolhydantoin
A method of stabilizing hydrogen peroxide in an aqueous solution, such as a circulating water slurry, comprising a peroxide, such as hydrogen peroxide. The aqueous solution may include organic...
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6419786 |
Method for bleaching wood pulp containing recycled paper
A method of treating wood-fiber pump, particularly wood-fiber pulp that contains recycled paper, comprises delivering the pulp to and advancing the pulp in a heating zone while delivering steam to...
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6416620 |
Method of repulping repulpable and recyclable moisture resistant coated articles
A repulpable wax containing paper product consists essentially of a hot melt formulation with an effective amount of an inorganic mineral filler such as clay. The inorganic mineral filler is in an...
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6413363 |
Method of making absorbent tissue from recycled waste paper
A product and process of making an absorbent paper article such as paper products, towels, napkins and the like is disclosed. In the invention, one may supply a single furnish, or slurry, of...
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6413364 |
Method, for the recovery of wood fiber from compressed fiberboard scrap
The invention provides a process and apparatus for the treatment and recovery of fiberboard and particle board waste. Waste fiberboard and particle board is fed into a steam chamber and steam...
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6387211 |
Methods for reducing fluorescence in paper-containing samples
The present invention provides methods for reducing fluorescence in a paper-containing sample. Methods for destroying fluorescent whitening agents in a paper-containing sample are also provided.
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6375742 |
Apparatus for processing paper sheets to decolor an image formed thereon
A decoloring apparatus for an image forming material comprising means for bringing a solvent into contact with an image forming material formed on a paper sheet and containing a color former, a...
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6355137 |
Repulpable wet strength paper
A paper composition comprising: at least one cationic thermosetting resin comprising the reaction product of (i) at least one polyamide having secondary amine groups made from reactants comprising...
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6340407 |
Process of making recycled linerboard or Kraft paper from old corrugated container
A process for producing new corrugated containerboard from old corrugated container (OCC) without using expensive virgin UKP includes three new steps. These steps are separating corrugated medium...
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6319356 |
Process for controlling odor in paper and paperboard using a halohydantoin
A method of inhibiting the autooxidation of fatty acids in a paper product made from pulp fiber is accomplished by adding to the pulp fiber between about 1 mole/metric ton and about 25 moles/metric...
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6312559 |
Deinking process using amine compounds and white water recycling
There is provided a deinking process carried out using white water according to which an excellent whiteness and an excellent areal ratio of residual ink fines can be secured while maintaining a...
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6309509 |
Composition and paper comprising cellulose ester, alkylpolyglycosides, and cellulose
This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and,...
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6306250 |
Method of removing capsule oils from self-copying paper
A process for removing capsule oils from carbonless copy paper involving: (a) providing carbonless copy paper containing capsule oils; and (b) disintegrating the carbonless copy paper in the...
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6281002 |
Method for preserving aqueous solutions or dispersions
The invention relates to a method for preserving aqueous solutions or dispersions containing organic substances, and to an apparatus for carrying out this method and the application of the method....
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6273993 |
Method of dispersing wax from a hot melt wax-coated paper
The present invention relates generally to a hot melt wax coating composition containing at least one chemical compound which is either itself capable of acting as a latent dispersant for the...
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6273995 |
Paper bulking promoter, highly bulky pulp sheet, and process for producing the pulp sheet
A paper bulking promoter containing a compound represented by the following formula (1) with which a highly bulky sheet can be obtained without impairing paper strength: RO(EO) m (PO) n H (1)...
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6254722 |
Method for making dissolving pulp from paper products containing hardwood fibers
A method for making dissolving pulp from cellulosic fiber. The fiber is treated with a 3-stage sequence having a first alkali extraction stage, a xylanase treatment stage, and a second alkali...
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6255375 |
Repulpable hot melt paper coating and coated product
A hot melt wax coating composition and hot melt wax coated paper product are provided which coating contains at least one chemical compound which is either itself capable of acting as a latent...
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6251220 |
Wastepaper deinking method using amine or acid salt of amine in the flotation stage
A deinking method comprising the steps of liberating ink from waste paper as a raw material and removing the liberated ink from a flotation system, wherein a nonionic surfactant, e.g., a reaction...
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6251221 |
Process for preparing cellulose from lignin-poor cellulose-containing feed stocks
The method of the invention involves treating cellulosic vegetable matter (the "Feed Stocks") for the selective recovery of lignin (when present in the feed-stock), cellulose and hemi-celluloses...
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6245195 |
Decontamination of waste papers
An improved process is disclosed for removing nonimpact inks and stickies contaminants from waste paper containing same by repulping the waste paper to form a slurry, adding a densifying agent and...
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6241849 |
Methods for deinking and decolorizing printed paper
The present invention relates to methods for deinking and decolorizing a printed paper, comprising: (a) pulping the printed paper to obtain a pulp slurry; (b) dislodging an ink from the pulp slurry...
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6235149 |
Acrylic acid/maleic acid copolymers as detackification agents for adhesives contained in secondary fiber
An improved method for inhibiting the deposition of adhesive contaminants, hot melts and/or pressure sensitive adhesive materials onto the surfaces of secondary paper products and repulping...
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6200416 |
Recycled paper production process which incorporates carbon dioxide
A method for the manufacture of paper products includes the feeding of a carbon dioxide stream to a product flow which includes a material containing an aluminum compound. The material is...
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