Method for producing compression resistant moisture-proof corrugating medium paper for heavy packaging

• Main Author: HAN JIANSHI
• Format: Patent
• Language: Chinese; English
• Published: 22.01.2014
• Subjects: METHODS OF PRODUCING PAPER THEREON; PAPER-MAKING; PAPER-MAKING MACHINES; PRODUCTION OF CELLULOSE; TEXTILES

The invention discloses a method for producing compression resistant moisture-proof corrugating medium paper for heavy packaging. The method comprises the following steps of material distribution and feeding, riddling conducted by a pulp scattering machine, fine screening conducted at a low concentration, concentrating storage, sizing and delivery, net portion dehydration, squeezing dehydration, drying, coating, drying, winding, rewinding and storage. When materials are distributed, waste paper raw materials are prepared, wherein high-ring-crush raw materials with the ring crush compression resistance between 9.0Nm/g and 9.5Nm/g account for 80% to 100% of the total weight of the waste paper raw materials. When sizing is conducted, a retention and drainage agent and a wet strength agent are added, the use level of the retention and drainage agent is 300 to 350 ppm by mass and the use level of the wet strength agent is 30kg to 40kg per ton of paper. The sizing process further comprises the steps that paper is m