METHOD OF FORMING A STRENGTHENED BOND IN A PAPERBOARD PRODUCT AND PRODUCTS THEREFROM

摘要

A method for adhesively bonding opposed paperboard surfaces to each other to form a strengthened bond in a paperboard product and paperboar d products formed thereof, comprising the steps of (A) applying a green-streng th adhesive to at least a portion of the first paperboard surface; (B) applying a styrene- butadiene latex adhesive or a modified styrene-butadiene latex adhesive as a strengthening adhesive to at least a portion of either the first or the seco nd paperboard surface such that the green-strength adhesive is substantially of fset from the strengthening adhesive when the first and second paperboard surfaces are positioned in an opposed relationship; (C) orienting the first and second pa perboard surfaces such that they are opposed to each other; (D) contacting the first and second surfaces together to form the strengthened bond and (F) sufficiently immobilizing the strengthened bond for a suitable period of time to allow th e strengthened bond to set. In addition, there is provided a method for adhesi velybonding opposed paperboard surfaces to form a streng thened bond in a paperboard product, and paperboard products formed thereof, by applying a strengthening adhesive consisting essentially of a styrene-butadiene latex adhesive or a m odified styrene-butadiene latex adhesive to at least a portion of the first paperboa rd surface, contacting together the paperboard surfaces to form the strengthened bond an d sufficient1y immobilizing the strengthened bond for a suitable period of tim e toallow the strengthened bond to set. Both virgin and recycled paperboard can be used. bjc/c:/wpf/patwork/apps/1358.002