Surface Application of Paper Chemicals

This volume examines the chemicals used in the surface treatment of paper products: the means used to apply them; and the product characteristics they are intended to enhance. The emphasis of the book is on the technologies for "on-machine" surface treatment (that is, on the paper machine) rather than separate coating operatons. Accordingly, the book includes a comprehensive treatment of metred size press technology from one of the formost manufacturers; the chapters describing the chemicals used are biased towards on-machine application. Similarly the product areas that are particularly discussed are two of those where development into on-machine application is most intense: non-impact printing papers and food-grade board (often made from 100 percent recycled base). There is extensive discussion of how the different chemicals used in surface treatment can interact, both with one another, and in some circumstances, even with those used in the bulk treatment (especially sizing). Suggestions as to avoiding these interactions are made and examples are given. The book ends with a discussion of the impact of surface treatment on the recycling of papers treated in the various ways. Though written principally for technologists in paper mills, this book should also be a suitable reference source for chemical and equipment suppliers, and for research staff in academic and technical institutes. This book should also be of interest to paper industry and its raw material and equipment suppliers.