Sack paper

Abstract

The invention discloses sack paper, and relates to the field of packaging materials. The sack paper comprises a paper pulp layer and a glue binding layer which are compounded together through adhesives, the paper pulp layer is formed by mixing sulfate wood pulp with long fibers, and the glue binding layer is formed by compounding styrene-acrylic emulsion with rosin. The sack paper is tough in paper quality, not easy to fracture, fine in waterproof property and breathability, high in elongation and suitable for packaging industrial products such as cement, chemical fertilizers and pesticides.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to paper for paper bags. Background technique [0002] Paper sack paper (extensible paper) is similar to kraft paper, and is mostly produced with coniferous wood sulfate pulp. In China, some bamboo pulp, cotton stalk pulp, and rag pulp are also used for production. Therefore, paper sack paper has high mechanical strength and is generally used for Make packaging bags for cement, pesticides, fertilizers and other industrial products. In order to meet the requirements of filling, paper bag paper requires a certain degree of air permeability and greater elongation. The application number is CN201010594658.1, which discloses a kind of stretch paper bag paper and its production method. The used weight is 70-100 Masson pine kraft natural color pulp, eucalyptus kraft natural color pulp with a weight part of 0-30, after pulping, beating at a beating concentration of 23%-28%, beating degre...

AI Technical Summary

Problems solved by technology

In order to meet the requirements of filling, paper bag paper requires a certain degree of air permeability and greater elongation. The application number is CN201010594658.1, which discloses a kind of stretch paper bag paper and its production method. The used weight is 70-100 Masson pine kraft natural color pulp, eucalyptus kraft natural color pulp with a weight part of 0-30, after pulping, beating at a beating concentration of 23%-28%, beating degree is 15-24SR, after beating, sand removal , seasoning, pressure sieve and fine sieve, online forming, pressing, pre-drying, stretching compression, post-drying, coiling, rewinding, and packaging. The longitudinal tensile index of the paper is 54-62Nm / g, and the longitudinal elongation The rate is 6.0%~8.1%, the longitudinal tensile energy absorption index is 2.2~3.3J / g, the longitudinal tear index is 15~22mN m2 / g, the burst index is 4.3~5.3kPa m2 / g, the air permeability 3.5~15μm / Pa·s, but the strength and toughness of the paper bag paper is not high, easy to break, poor waterproof performance, poor air permeability, low elongation

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