Paper egg trays are classified according to different attributions. Paper egg tray, as the name suggests, is a kind of paper mold for holding eggs, which can well protect eggs from being broken and damaged during transportation or storage. In fact, the production of paper egg trays is quite complicated. Let's talk about the classification of paper tray egg trays according to different attributions.
① According to the manufacturing method, it is divided into chemical pulp (including caustic soda pulp, sulfate pulp, sulfite pulp, etc.), mechanical pulp (including millstone ground wood pulp, disc refining mechanical pulp, thermomechanical pulp, etc.) and chemical pulp 3 categories of mechanical pulp;
② According to the variety of raw materials, it is divided into wood pulp, straw pulp, bamboo pulp, cotton pulp, waste paper pulp, etc.;
③ According to the processing depth, it is divided into unbleached pulp, semi-bleached pulp, bleached pulp, refined pulp, etc.;
④ According to the yield of wood pulp to wood, it is divided into chemical pulp (40-50% yield), high-yield chemical pulp (50-65% yield), and semi-chemical pulp (65-84% yield) , chemical mechanical pulp (yield is 85-94%), mechanical pulp (yield is 94-98%);
⑤ According to the purpose, the pulp used by the enterprise is called self-use pulp, and the pulp sold as a commodity is called commercial pulp. For a specific variety, it is often named after several different classification methods, such as bleached kraft softwood pulp, natural sulfite reed pulp, poplar groundwood pulp, etc. Learn about pulp properties and uses.
Among all kinds of pulp, chemical pulp still occupies a large proportion. In 1987, the world's total output of chemical pulp reached 111.35 million tons, accounting for 71% of the total pulp output (155.86 million tons), and mechanical pulp accounted for 21%. Due to the late development of chemical mechanical pulp, the relative output was relatively small, but the growth rate was faster. Due to the continuous improvement of the recycling rate of waste paper and the relative increase in the amount of fillers and coatings used in paper, the amount of pulp used is relatively reduced, so the growth rate of pulp is generally lower than that of paper and cardboard.
Since our company was established, we have also been committed to the research and development and production of new paper egg trays. Due to our professionalism and focus, our paper egg trays have also been unanimously recognized and trusted in the market. Here, our company's All staff warmly welcome your purchase! We will wait for you with first-class service.
