METHOD FOR MANUFACTURING OF CARDBOARD AND METHOD FOR REDUCING MOISTURE-PERMEABILITY OF CARDBOARD

摘要

FIELD: production of cardboard for manufacture of packages for liquids. ^ SUBSTANCE: method involves treating fibrous mass designated for preparing of cardboard with percarbonic acid used in an amount of 0.5-5 kg per t of dry fibrous mass on conversion to 100%-concentration of percarbonic acid; thereafter or simultaneously with indicated treatment process, providing gluing-through by combining resin-based and neutral adhesives; forming cardboard. ^ EFFECT: reduced moisture-permeability and improved quality of gluing-through of cardboard. ^ 11 cl, 3 tbl, 3 ex