Film coatedbasepaper and bagasse pulp for film coatedbasepaper

Abstract

The invention discloses a bagasse pulp for a film coatedbasepaper. The bagasse pulp is obtained by the following steps that: step 1, after drying the bagasse, dust and pith are removed from the bagasse, and ammonia, alkali and anthraquinone are added to the bagasse as cooking agents, distilled water is added to immerse the bagasse, and a mixed bagasse is obtained; step 2, the mixed bagasse is put in a digester, temperature is raised to 100-150 DEG C to boil the mixed bagasse, cooling, washing and concentrating are conducted to obtain a coarse bagasse pulp; step 3, hydrogen peroxide and modified zeolite are added to the bagasse pulp, a first adding of an alkali, a first heating to 50-90 DEG C, a first thermal insulation, a second adding of an alkali, a second heating to 70-100 DEG C, and a second thermal insulation are conducted, a bleached bagasse pulp is obtained; step 4, the bleached bagasse pulp is diluted, washed and purified to neutral, and is concentrated to obtain the bagasse pulp for film coatedbasepaper; the invention also discloses a film coatedbasepaper. Base slurry of the film coatedbasepaper is obtained by boiling the bagasse using ammonia method, the cost-recovering of black liquor is reduced, the modified zoelite is used as stabilizer, the efficiency of bleaching is improved, the paper pulp process design is reasonable, and the economic benefits of the film coatedbasepaper is improved.

Description

technical field [0001] The invention relates to the technical field of coated base paper, in particular to a coated base paper and bagasse pulp for the coated base paper. Background technique [0002] Laminated base paper is a kind of cardboard specially used for laminating cups. It has high stiffness and high water resistance, and is generally not coated. Coating (and printing) is carried out on the coated base paper, and then used to make coated paper for containing and storing liquids. Currently commercially available coated paper is mainly made of coniferous wood pulp and hardwood wood pulp. With the gradual reduction of wood production in my country and the scarcity of natural materials, it is becoming more and more important to look for alternative wood pulp, more environmentally friendly, and raw paper pulp materials. One of the difficult problems that need to be overcome in the paper industry and related fields. [0003] Bagasse is a by-product of the sugar industry...

AI Technical Summary

Problems solved by technology

Compared with film and other non-wood raw materials and wood raw materials, sugarcane has its own particularity, the traditional pulping process of wood raw materials is directly used for bagasse pulp, often resulting in poor bleaching, high viscosity of black liquor recovery, resulting in high recycling costs.