Carry out secondary recycling. Use recycled fiber to make paper. Recycling process: waste paper is mixed with water in the beater to form sticky pulp. Air is injected into the pulp to make the ink in the pulp adhere to the bubbles and then float on the surface of the pulp, which is convenient for discharging the ink in the pulp. Then, the water in the pulp is discharged by the press, and the pulp is cut by the screw conveyor. Then, bleach the pulp with a decoloring agent containing peroxide, and wash the pulp with clean water. Finally, chemical wet strength agent is added to the pulp to plastic the pulp into paper.
Make recycled paper. This is the most widely used method of waste paper. It can be used not only to make recycled wrapping paper, but also to make recycled newsprint. This new process includes deinking, paper fiber purification, absorbing ink and impurities, and then making paper.
Processing into cattle and sheep feed. Larry, an animal nutritionist at the University of Erie, USA? Berg's method is to chop up old newspapers, add water and 2% hydrochloric acid, boil for 2 hours, make cellulose decompose and break under the action of high temperature and acid, and then add it to cattle and sheep feed, with the addition ratio of 20% ~ 40%. Cattle farms and sheep farms in Britain, after a little treatment, cut waste paper into slender strips or knead it into small paper balls, and add a small amount of nutrients to feed cattle and sheep. Cattle and sheep can gain more weight by eating it 1/3 than by eating ordinary feed. Australian scientists crushed waste paper and mixed it with appropriate amount of linseed oil and honey to make granular feed for cattle and sheep, which can make them grow fat.
Express boxes can also be transformed into some daily necessities, such as some boxes containing things, cut into decorations and made into toys for children to play with.