Method for preparing packaging material

Abstract

The invention provides a method for preparing packaging material. The method comprises the steps of preparing fiber pulp and processing a packaging material by utilizing the fiber pulp, wherein the process of preparing the fiber pulp comprises the following steps: pre-impregnating agricultural wastes such as straws with defibering liquid at the temperature not higher than 65 DEG C and then defibering the pre-impregnated agricultural wastes such as straws, wherein the defibering liquid is prepared by diluting a multienzyme compound preparation with water; adding a fiber softener and a cationic surfactant after defibering and treating for 40-60 minutes at the temperature of 60-80 DEG C, then softening and curing; and grinding the softened and cured agricultural wastes such as straws at least once, and then diluting, diverting and concentrating the ground materials to obtain the fiber pulp. In the method, no chemical agent is used in the pulping stage; and the prepared packaging material is clean and environment-friendly and do not have chemical residues.

Description

technical field [0001] The invention relates to a method for preparing a paper material, in particular to a method for preparing a package. Background technique [0002] Traditional packaging preparation methods mostly use pure chemical methods for pulping in the pulping stage, which has exposed many shortcomings: large consumption of chemicals, high energy consumption, high investment in equipment, especially the wastewater discharged from the pulping process has High BOD, COD load, and contains highly toxic and strong carcinogenic substances, causing serious pollution to the environment. [0003] With the improvement of people's requirements for environmental protection, the process of packaging preparation method is gradually improved, by using enzyme pretreatment chemical pulping method in its pulping stage to replace the traditional pure chemical method for the preparation of fiber pulp, however, this method After pretreatment of materials with enzyme preparations, hig...

AI Technical Summary

Problems solved by technology

[0002] Traditional packaging preparation methods mostly use pure chemical methods for pulping in the pulping stage, which has exposed many shortcomings: large consumption of chemicals, high energy consumption, high investment in equipment, especially the wastewater discharged from the pulping process has Very high BOD, COD load, and contains highly toxic and strong carcinogenic substances, causing serious pollution to the environment

[0003] With the improvement of people's requirements for environmental protection, the process of packaging preparation method is gradually improved, by using enzyme pretreatment chemical pulping method in its pulping stage to replace the traditional pure chemical method for the preparation of fiber pulp, however, this method After pretreatment of materials with enzyme preparations, high temperature and high pressure chemical cooking (mainly alkali cooking) is still required to obtain fiber pulp that meets the requirements of papermaking. In the process of chemical cooking, lignin is maximized The destruction of lignin makes it difficult to separate lignin from waste liquid for further utilization after pulping, for example: for the production of functional bio-organic fertilizer; Packaging boxes or paper products, due to the use of chemicals in the slurry preparation process, the prepared packaging boxes or paper products inevitably contain chemical residues, which have problems of safe use and environmental pollution after degradation. Further adding subsequent steps for processing can solve the above problems, thus resulting in an increase in the processing cost of paper products such as packaging boxes, and making the packaging preparation process more complicated, which is not conducive to large-scale production and processing