Abstract: An apparatus and method for monitoring and controlling microbiological activity in a process stream by measuring dissolved oxygen is disclosed.

Abstract: The invention concerns a process for the production of activated fibres or particles having self-binding properties comprising the steps of treating fibers or particles of lignocellulose containing material by contacting them with an oxidant during a time sufficient for the formation of water soluble reaction products with binding properties and retaining at least a significant part of said water soluble reaction products with the treated fibers or particles. The invention further concerns activated fibers or particles obtainable by the process, a press molded product and a process for the production thereof from activated fibers or particles.

Abstract: An object of the present invention is to provide an interleaf paper for packaging planographic printing plates and preventing breakage of the plate-making layer at the time packaging, and a planographic printing plate package structure using a plurality of the above-mentioned interleaf paper. According to the invention, the interleaf paper for packaging the planographic printing plates is an interleaf paper, which contacts a plate-making layer of a planographic printing plate when packaging the planographic printing plates, and the interleaf paper contains Mg, Al, and Si, each at 0.5% by weight or less.

Abstract: The present invention relates to the use of urea sulfate or urea hydrochloride, or both, in process streams in the paper and pulping industries to control pH, to bring about flocculation or precipitation of various materials, and to replace all or part of the sulfuric acid, hydrochloric acid, and/or papermaking alum used in the paper and pulping industries.

Abstract: The present invention relates to a process for sizing paper comprising providing an aqueous suspension comprising cellulosic fibres, dewatering said aqueous suspension thereby forming a paper web, said process comprising adding to the cellulosic suspension an aqueous composition comprising aggregates comprising a sizing agent, the composition obtainable by mixing in any order prior to the addition to the aqueous suspension, (i) an aqueous solution comprising at least one coagulation agent, and (ii) an aqueous dispersion comprising a sizing agent, wherein the zeta potential of the composition is less than 20 mV. The invention also refers to an aqueous sizing composition.

Abstract: This invention relates to a novel composition for the production of planar structures, whereby said composition is based on a cationic amylaceous material and a sulphonated amylaceous such as sulphocarboxylate. The composition can exist in the form of a pulverulent solid mixture or an aqueous suspension in which both amylaceous materials take the form of granules which are swollen or unswollen. Said composition can also exist in the form of an adhesive which can or cannot contain granular structures which are swollen or unswollen and/or complexes which associate both amylaceous materials. Said complexes flocculate and precipitate generally during the solubilization stage which can advantageously consist of a continuous or discontinuous curing stage.

Abstract: The invention concerns the use of hydrosoluble homopolymers and/or copolymers of acrylic/or methacrylic acid with one or more acrylic, vinyl or allyl monomers as an aid to the grinding of mineral particles in aqueous suspension, providing them by their use particular optical properties.

Abstract: An anti-static paper is formed by treating a fibrous base paper with a saturant. The saturant comprising a solution of an anti-static agent, and a liquid carrier and the anti-static agent is deposited in the interstices of said fibrous base paper. A viscosity increasing agent is employed to produce a viscosity in the range that suppresses saturation of said base paper while not substantially suppressing delivering of said anti-static agent to the interstices of the fibrous base paper.

Abstract: A process for forming an abrasion resistant, decorative sheet which comprises forming a web of cellulosic fibers on a papermaking machine and applying a coating suspension including an abrasion-resistant grit and decorative inclusion particles to the upper surface of the web on the papermaking machine.

Abstract: An organic substrate is manufactured from recycled waste paper, cotton fiber and cotton gin waste, and gypsum. The recycled waste products are combined to form a slurry mixture for processing by conventional paper making machinery into a substrate that may be used in sheet form or comminuted pieces.

Abstract: Aggregated mineral pigments (such as kaolin clay pigments) having a high surface area and useful in coating and filling compositions for ink jet printing media are manufactured by dry grinding an unground mineral composition starting material and then optionally acid treating the ground material.

Abstract: The invention relates to a process for manufacturing liquid packaging board, in which process a board pulp is treated with a percarboxylic acid by adding to the pulp percarboxylic acid in an amount of 0.5-5 kg/ton of dry pulp, indicated as a 100 percent percarboxylic acid, whereafter, or simultaneously with the percarboxylic acid treatment, sizing is carried out with a combination of a resin size and a neutral size, which is followed by board forming. The manufactured board has good resistance to liquid penetration.

Abstract: A method of reducing the level of malodorous amines emitted by paper when exposed to an alkaline environment is provided, which comprises making the paper so that it does not contain ammonium groups that are bonded to any polymer contained in the paper by only one chemical bond. Laminates which emit reduced levels of amines and which are comprised of this paper are also provided. In a preferred embodiment, the paper is sized with a sizing emulsion comprised of alkenyl succinic anhydride and a cationic water-soluble polymer having ammonium groups that are attached to the polymer by at least two chemical bonds.

Abstract: The aqueous suspension contains hydrated n calcium sulfate (CaSO4 nH2O), the value of n ranging from 0 to 2 (0<n<2) and an additive. The method for preparing said aqueous suspension involves the following steps: a) mixing the calcium sulfate and at least one of said additives with water and b) homogenizing the mixture under strong agitation. The method for preparing the paper includes adding said aqueous suspension to the cellulose fiber suspension.

Abstract: The invention concerns sulfate-containing and aluminum-containing pigments having pseudoboehmitic structural units, their manufacture and use for paper making. In the manufacture of paper, these pigments produce surprisingly good printing results with inkjet color printers and are also simple to manufacture.

Abstract: Paper is made by mixing anionic starch, carboxyl methyl cellulose or other polymeric binder into a cellulosic thin stock together with a cationic inorganic or polymeric coagulant and then flocculating the suspension by means of an anionic swelling clay or other anionic retention aid.