All raw materials and application steps needed for papermaking.

Papermaking is step by step. I searched for some functions of cassava modified starch in papermaking, hoping it would be useful.

1. Used for wet end addition: a certain amount of gelatinized tapioca modified starch paste is added before papermaking to make it react with fiber, which plays the role of strengthening, filtering and retention. Adding modified starch can improve the retention rate of fine fibers and fillers, improve the ash content, whiteness and opacity of paper, save energy consumption, reduce wet end damage and reduce the pollution of three wastes in paper mill.

2. Used for interlayer spraying: When the papers are bonded to each other, the interlayer bonding strength is related to surface characteristics, fiber structure, ratio, beating degree and paper moisture. Because of the unique technology, cardboard has two sides of paper, and when the paper is compounded with each other, there are obvious differences between layers. The most widely used method to improve the adhesive strength between cardboard is to spray cassava modified starch particles evenly on the paper layer with a special nozzle, and gelatinize the starch particles through the drying cylinder to play an adhesive role. 3. Used for paper surface sizing: it can improve the sizing effect and save the dosage of sizing agent, especially as an auxiliary additive for neutral papermaking. On the paper machine, tapioca modified starch slurry is coated on the paper surface by rubber roller, and a small amount of tapioca modified starch slurry penetrates into the paper to form a film on the paper surface, so that the fibers on the paper surface can be better combined without falling off, which makes the paper smooth when writing and improves the printing performance when printing. 4. Used for coated paper: It can be used as an adhesive in coated printing paper to replace expensive synthetic resin and casein, which can obviously reduce the production cost of coated paper. Coatings are generally composed of white pigments, adhesives, additives and water. When the coating is coated on paper, tapioca modified starch is used as an adhesive, so that pigments are firmly combined with pigments, pigments and fibers, which can improve the printing performance of paper, and it is not easy to break ends, lose hair, lose powder and paste plates during printing, and control the ink absorption, smoothness, gloss and whiteness of paper, thus improving the printing effect of paper. In addition, cassava modified starch can also be used as an adhesive for paper products, such as cartons and paper tubes. It has the characteristics of strong adhesion, low cost and light environmental pollution. In other words, cassava modified starch is almost suitable for the whole process of papermaking.