METHOD AND DEVICE FOR DE-ACIDIFYING PAPER

For decades books and other paper documents have been deteriorating in archives and libraries around the world because the acidity of the paper is increasing so much (wherein the pH decreases) that the paper cellulose is decomposing so that the paper loses its cohesion and thereby degenerates in ter...

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Bibliographische Detailangaben
Hauptverfasser:	VAN ROOSMALEN, MAAIKE JACOBINE ESTHER, BLANKENBORG, STEPHANUS GERARDUS JOHANNES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	IMPREGNATING OR COATING OF PAPER PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	For decades books and other paper documents have been deteriorating in archives and libraries around the world because the acidity of the paper is increasing so much (wherein the pH decreases) that the paper cellulose is decomposing so that the paper loses its cohesion and thereby degenerates in terms of quality. The invention relates to an improved method for de-acidifying paper. The invention also relates to a device for applying such a method. Les livres, comme les autres documents papier, s'abîment depuis des décennies dans les archives et les bibliothèques du monde entier parce que l'acidité du papier augmente si fortement (c'est-à-dire que son pH baisse) que la cellulose du papier se décompose et que le papier perd de sa cohésion, ce qui entraîne une dégradation de sa qualité. L'invention a trait à un procédé amélioré de désacidification du papier. L'invention a également trait à un dispositif de mise en oevre dudit procédé.