Patent ID: 6120638
Filing Date: 2000-09-19
Classification: B42C,C09J

Abstract:
A method for casing-in a hardcover book comprising the steps of:(a) applying a redispersible adhesive to the outside of the first and last pages of a book block;(b) inserting the adhesives coated book block into a pre-formed case in the position in which the two are to be adhered; and(c) pressing together the book block and case so as to bond together; wherein the adhesive composition comprises:a polymer made by aqueous emulsion polymerization in the presence of a polyvinyl alcohol colloidal stabilizer, the polymer having a glass transition temperature of about -25.degree.C. to about +15.degree. C. and an emulsion viscosity of from about 500 to about 10,000 cP;the polymer consists of from about 30 weight percent to about 44 weight percent first repeating units, each derived from a vinyl ester monomer; about 55 weight percent to about 70 weight percent second repeating units, each derived from an alkyl acrylate monomer selected from the group consisting of ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate or mixtures thereof; and about 0.1 weight percent to about 10 weight percent third repeating units derived from a monoethylenically unsaturated polar monomer provided that the polymer comprises no more than about 3 weight percent repeating units derived from a monoethylenically unsaturated carboxylic acid monomer; wherein the vinyl ester monomer is selected from the group consisting of vinyl acetate, vinyl propionate, vinyl neonanoate, vinyl neodecanoate, vinyl 2-ethylhexanoate, vinyl pivalate, vinyl versatate and mixtures thereof; and(d) applying pressure to the joint of the book to bring the abuttable portions of the joint into bonding contact to effect an attachment, and allowing the adhesive to dry.