Process for the continuous manufacture in an aqueous environment of fibrous webs containing latex or a similar composition and/or a phenoplastic or aminoplastic, webs so obtained and their optional reuse

摘要

manufacture of sheets of fibrous material containing latex by means of preparing paper pulp containing the fibrous material in the following manner: - adjustment of ph between 4 and5.5, and preferably between 4 and 4.5, addition of an electrolyte whose polarity is opposite to that of the latex or the like is used, and addition of an antifoam.- adjustment of the ph to between 4 and 5, if necessary, the addition, preferably by injection of latex, or the like.second, addition of electrolyte with the same characteristics as set out above, may be added (for amino resins or).- adjustment of the ph to values previously reported, if necessary.;we can apply, during the manufacture of the sheet in a section of the induction (16) on one or both surfaces of the sheet, a variety of products, such as.an aqueous suspension comprising the carboxy methyl cellulose with anti adhesive properties to the paper.;the papers prepared for the recovery of fibrous material in an aqueous medium, cold in the presence of a wetting agent and chloride ions, sulfate ions and / or sulfamate.