最火学双语增长纸业专业知识和专业英语原木片材发箍非标刀具挤塑加工描图纸Frc

学双语！增长纸业专业知识和专业英语！

发布日期： 来源：纸圈

助滤策略和助滤体系

Drainage Strategies and Systems

§ro除非确有特殊需要duction

§1.引言

The removal of water in the forming section is often the rate-limiting

process煎饼机 during the 木工机械manufacture of paper. In such cases, if a means can be found

to allow water to separate itself more quickly from the wet web of paper, then

the rate of 中央空调production on the paper machine could be increased. Depending on the

details, there can be opportunities also to该技术可取代传统的电路蚀刻工艺 improve product quality. Vendors of

paper machine equipment provide a variety of devices, such as hydro foils,

vacuum boxes, vacuum couch rolls, and extended-nip wet-presses to encourage

quicker or 干洗店greater release of water before the evaporative drying. This chapter

will focus on drainage-promoting chemical addi1方面要加强科普tives and the manner of their

implementation.

成型区的脱水常常是纸张生产时速度受到限制的环节。这种情况下，如果能找到一种方法加快湿纸页的脱水，那么纸机的生产速度就可以得到提高了，甚至纸张质量的提高也有了可能(跟具体情况有关)。纸所以1旦发现问题要及时处理；机设备供应商为此提供了多种装置，如脱水案板(hydrofoils)、真空箱、真空伏辊、宽区湿压榨(extended-nip

wet-presses)等，以在纸页被蒸发干燥前更快更多地获得脱水。本章将重点介绍促进滤水的化学助剂以及它们的应用方式。