COMPOSICAO DE MATERIA CURAVEL;PROCESSO PARA A PREPARACAO DE UMA COMPOSICAO DE RESINA DE ALDEIDO E AMIDO;PROCESSO PARA A PREPARACAO DE PAPELAO CORRUGADO;PROCESSO PARA AUMENTAR AS HIDROFOBICIDADE DA SUPERFICIE DE UM SUBSTRATO DE PAPELAO

摘要

The invention relates to a curable aldehyde resin and starch composition useful as a saturant and laminating adhesive for paperboard products, including dual arch corrugated cardboard. The aldehyde resin to starch ratio is from approximately 7:5 to 5:1 by weight. By the present invention is produced corrugated paperboard which has substantially improved crush strength over that obtained with polyvinyl acetate adhesives, and higher moisture resistance than either polyvinyl acetate or starch adhesives.