Advanced wet-end system with carboxymethyl-cellulose.APPLICATION: Treating pulp fiber with CMC (Common Messaging Calls) A programming interface specified by the XAPIA as the standard messaging API for X.400 and other messaging systems. CMC is intended to provide a common API for applications that want to become mail enabled. 1. could reduce the dosage dosage /dos·age/ (do´saj) the determination and regulation of the size, frequency, and number of doses. dos·age n. 1. Administration of a therapeutic agent in prescribed amounts. levels of wet-end additives, resulting in a cleaner mill system, improved quality, and increased economic efficiency. We developed a novel and practical method to greatly enhance the efficacy of wet-end chemicals. It involves the adsorption adsorption, adhesion of the molecules of liquids, gases, and dissolved substances to the surfaces of solids, as opposed to absorption, in which the molecules actually enter the absorbing medium (see adhesion and cohesion). of carboxymethyl-cellulose (CMC) onto pulp. Investigation showed that paper made from CMC-treated pulp required as much as 30% to 50% less wet-end additives than usual to obtain the desired quality when compared to paper made from non CMC-treated pulp. Furthermore, the study identified both the degree of substitution of CMC and electrical conductivity Not to be confused with electrical conductance, a measure of an object's or circuit's ability to conduct an electric current between two points, which is dependent on the electrical conductivity and the geometric dimensions of the conducting object. of the pulp slurry slurry, n a thin mixture of insoluble material floating in liquid. slurry solids in suspension. Used as a method of feeding pigs—slurry is pumped through fixed lines and delivered to troughs by hoses equipped with gasoline pump fittings. as key variables critical to CMC adsorption onto pulp. Improved fiber charge distribution, which facilitates improved wet-end additive distribution, is believed to be the main reason for the synergy seen when CMC is used in conjunction with wet end applications. Results of laboratory investigations and development of CMC application were effectively reproduced in mill trials. View this paper online at http://www.tappi.org/index.asp?pid=29256 Masasuke Watanabe, Tomohisa Gondo, and Osamu Kitao are with the Pulp and Paper Research Laboratory. Oji Paper Co, Ltd., 1-10-6 Shinonome, Koto-ku, Tokyo 135-8558. Japan. Email Gondo at tomohisa-gondo@ojipaper.co.jp |
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