Paper making and fiber liberation inventions 09/06

20060207732 - Methods for improving discoloration resistance of pulp and pulp improved in discoloration resistance: The present invention aims to provide a method for improving discoloration in pulp, characterized by a versatile technique adaptable to any type of pulp, a time-saving process, a great and permanent anti-fading effect, environmental friendliness and other properties, as well as a pulp with greatly improved discoloration obtained by said...

20060207733 - Method and system for controlling the addition of oxygen gas and alkali during oxygen gas delignification: The method and system is for the acid gas delignification of cellulose pulp in a gas/fluid suspension. The oxygen gas delignification takes place in a reactor system with one or several oxygen gas reactors. Delignification chemicals are added at least before the first oxygen gas reactor such that oxygen gas...

20060207734 - Chemical oxidation for cellulose separation: An oxidative solution (Ox-B, a solution of no less than 5:1 sodium hypochlorite: hydrogen peroxide) was found to remove both lignin and hemicellulose from sugarcane bagasse. After treatment the cellulosic residue readily separated from the lignin and hemicellulose by sedimentation. The residue (the pulp) contained up to 80% by weight...

20060207735 - Creped paper product and method for manufacturing: A creped paper product is provided according to the invention. The creped paper product comprises a result of creping a web of fibers comprising synthetic fibers to provide a creped paper product having a stretch of at least 3% in the machine direction according to TAPPI test T494. The web...

20060207736 - Phosphoric acid quenched creping adhesive: An improved creping adhesive is prepared by first reacting a dibasic carboxylic acid, or its ester, half-ester, or anhydride derivative, with a polyalkylene polyamine, preferably in aqueous solution, under conditions suitable to produce a water soluble polyamide. The water-soluble polyamide is then reacted with an epihalohydrin until substantially fully cross-linked,...

20060207737 - Aqueous pigmented coating formulation providing for improved opacity: Aqueous pigmented coating formulations for improving opacity and processes for their manufacture are disclosed. Specifically, the aqueous pigmented coating formulations comprise an acylated lecithin that comprises a chemically modified lecithin and less than 10% (by total weight acylated lecithin) free fatty acid. Additionally, the acylated lecithin is substantially free of...

20060207738 - Paper substrates useful in wallboard tape applications: A paper substrate, particularly useful in wallboard tape applications containing PVOH on and/or in at least one surface of the paper, as well as methods of making and using the same. The use of the tape of the invention is used in conjunction with a joint compound that may contain...

20060207739 - Paper machine and reconditioning method of paper conveying belt: [Solving Means] Providing a press device having a pair of paper conveying endless belt and a polishing device disposed on a return side of the paper conveying belt having a polisher to polish a wet paper contacting face of the paper conveying belt, which are arranged in such a way...

20060201640 - Method and apparatus to optimize displacement batch cooking using advanced control: Method and apparatus for batch displacement digester systems to increase tank farm vessel temperatures for more efficient delignification rates by mitigating the formation of flow channels in the chip bed, minimizing the vertical temperature gradient in the digester and segregation of returning liquors to the tank farm from the digester....

20060201641 - Methods for producing pulp and treating black liquor: A method is provided for treating black liquor particularly derived from non-wood pulp, by heating with an alkaline earth metal oxide in a toroidal fluidised bed reactor at a temperature of above 650° C. The method may be used alone or as part of a method of converting graminaceous raw...

20060201642 - Methods of treating chemical cellulose pulp: A single pulp bleaching stage comprises an acid treatment, A, a neutralization treatment, n, and a chlorine dioxide treatment, D0. The AnD0 bleaching stage may optionally include washing between treatments, either between each treatment or only some treatments, represented by A-n-D0 which indicates there is washing between the acid (A)...

20060201643 - Method for embossing textured tissue sheets: Embossing regularly textured sheets with an appropriate regular, discrete embossing pattern to improve softness can result in a combined texture that creates an interference pattern that camouflages the original texture pattern and the embossing pattern. The resulting pattern is more appealing to the eye and is more random in appearance...

20060201644 - Ink jet printing paper: An ink jet printing paper which has a degree of bulk equal to or higher than that of non-coated paper, retains the same quality as that of coated type sheet with respect to surface smoothness, sharpness of print images, ink absorbability and water resistance, and shows improved ink strike-through and...

20060201646 - Aqueous suspension providing high opacity to paper: The addition of small quantities of at least one additive to calcium sulfate prior to addition of the calcium sulfate to the cellulose fiber solution for paper manufacture has been found to significantly increase its opacifying capacity. Suitable additives for this invention include: kaolin, calcium carbonate, talc, titanium dioxide, aluminum...

20060201645 - Method for the production of paper: A method for the production of paper which is characterized in that it employs an anionic fluorine-based oil-proofing agent and a fixing agent comprising polymer in which at least N-vinylformamide is a polymerization component and/or a derivative of said polymer; together with paper which is characterized in that it contains...

20060201647 - Pyrogenic silicon dioxide powder and dispersion thereof: Pyrogenically produced silicon dioxide powder with a specific surface area of between 5 and 600 m2/g and a carbon content of less than 500 ppm, which displays a specific dibutyl phthalate absorption of less than or equal to 1.2 g dibutyl phthalate/100 g SiO2 per m2 of specific surface area...

20060201648 - Method and apparatus for transporting a sheet from a dryer to a reel: A system and method for transferring a continuously advancing paper web from a dryer to a reel section is provided. The system includes a first fabric defining a first moving conveyor. The first fabric may be a permeable fabric, which is positioned downstream from the dryer. A second fabric, which...

20060201649 - Press belt, process for producing the same and shoe press roll using the press belt: A press belt having superior cracking resistance, wear resistance and pressure deflection resistance and an excellent traveling property and a method of manufacturing the same as well as a shoe press employing the same are provided. A press belt in a press comprising a rotatively traveling endless press belt and...

20060196622 - Method for determining chemical pulp kappa number with visible-near infrared spectrometry: A method for the determination of cellulosic-fibre properties, such as, but not limited to, residual lignin content of chemical pulp, with the aid of a spectroscopic technique obtained over a range covering the visible and the near-infrared regions of the electromagnetic spectrum, comprising the steps of obtaining a sample from...

20060196621 - Virtual hand sheet method and system for estimating paper properties: A method and system for estimating a property of pulp or paper, such as freeness, tensile index, or tear index. In one embodiment, the method comprises receiving image data depicting a plurality of pulp fibers, virtually distributing the pulp fibers over a predetermined area to create a virtual distribution of...

20060196623 - Making of paper product which surface layer possesses bactericidal action: A making method of paper product which surface layer possesses bactericidal action, that is to mix and heat the polygonal nano-silver particle, nano-far infrared particle and nano-polymer particle in order to make the nano-polymer particle instantly cover the nano-silver and far infrared particle at its semi-melted state to form a...

20060196624 - Papermaking method using opacification aid, and paper product made thereby: A method for making an opacity relevant grade paper or paperboard product, such as a communication type paper used for printing and writing applications, utilizes an effective amount of quaternized alkanolamine fatty acid ester compounds as an opacification aid to control the optical properties of the paper or paperboard product...

20060196622 - Method for determining chemical pulp kappa number with visible-near infrared spectrometry: A method for the determination of cellulosic-fibre properties, such as, but not limited to, residual lignin content of chemical pulp, with the aid of a spectroscopic technique obtained over a range covering the visible and the near-infrared regions of the electromagnetic spectrum, comprising the steps of obtaining a sample from...

20060196621 - Virtual hand sheet method and system for estimating paper properties: A method and system for estimating a property of pulp or paper, such as freeness, tensile index, or tear index. In one embodiment, the method comprises receiving image data depicting a plurality of pulp fibers, virtually distributing the pulp fibers over a predetermined area to create a virtual distribution of...

20060196623 - Making of paper product which surface layer possesses bactericidal action: A making method of paper product which surface layer possesses bactericidal action, that is to mix and heat the polygonal nano-silver particle, nano-far infrared particle and nano-polymer particle in order to make the nano-polymer particle instantly cover the nano-silver and far infrared particle at its semi-melted state to form a...

20060196624 - Papermaking method using opacification aid, and paper product made thereby: A method for making an opacity relevant grade paper or paperboard product, such as a communication type paper used for printing and writing applications, utilizes an effective amount of quaternized alkanolamine fatty acid ester compounds as an opacification aid to control the optical properties of the paper or paperboard product...