Method for making degradable ground film paper from cotton stalks

Abstract

The invention discloses a method for making degradable ground film paper from cotton stalks.The method comprises the following steps that 1, the cotton stalks are chopped into material segments; 2, the material segments are sent into a steaming bin for presteaming and then sent into a continuous cooking device for cooking; 3, the cooked materials are sent into a twin screw pulping extruder for twisting and fiber separating, and coarse pulp is obtained; 4, the coarse pulp obtained in the third step is subjected to pulp washing, beating and digestion and then sent into a papermaking machine to be made into the ground film paper.According to the method for making the degradable ground film paper from the cotton stalks, the papermaking efficiency can reach up to 90%-95%, the b / c ratio of waste water produced by the system is high, the biochemical process is easy to achieve, a biological treatment method can be adopted, the obtained ground film paper contains a large amount of nitrogen, phosphorus and potassium and provides nutrients for cotton growth after being degraded, and compared with traditional plastic film, the cost is reduced by about one third.

Description

technical field [0001] The invention relates to a method for making degradable mulch paper from cotton stalks. Background technique [0002] Xinjiang is the main cotton producing area in my country, and its cotton planting area has reached more than half of the country's total planting area in 14 years, reaching 35 million mu. Each mu of cotton field can produce about 250 kilograms of cotton stalks, and there are about 8.75 million tons of cotton stalk resources available in Xinjiang. At present, the main methods of cotton stalk treatment are: incineration on the spot, return to the field after crushing, and straw power generation, etc., all of which are disappointing results. [0003] Xinjiang often has extreme weather such as strong winds and cold weather in spring. In order to ensure the timely emergence of cotton seedlings and preserve moisture, cotton sowing has to be covered with plastic film to keep it warm. Since the plastic film is non-degradable and cannot be rec...

AI Technical Summary

Problems solved by technology

Since plastic film is not biodegradable and cannot be recycled, "white pollution" is becoming more and more serious