Most hotels and hotel room departments use white as the main fabric, so hotel staff attach great importance to the whiteness of the room fabric. If only bleaching is used, a certain whiteness can be obtained. However, upon careful observation, you will find that there is still light yellow or brown on the fabric, mainly because the fabric itself has a slight absorption of blue light in natural light. Therefore, it is necessary to achieve an ideal white state of the fabric, Regular and quantitative whitening of linen can be carried out. So, how can white linen shine as white as new?

漂白的目的

The purpose of bleaching

在洗涤过程中的漂白目的主要有两个，一是去除织物上残留的需经过氧化作用或还原作用方可去除的污垢，使其达到织物本身的原有色泽；二是提升白色织物及带颜色织物的白度和亮度，使其色泽更加明亮艳丽。

The main purpose of bleaching during the washing process is to remove residual dirt on the fabric that requires oxidation or reduction to achieve its original color; The second is to enhance the whiteness and brightness of white fabrics and colored fabrics, making their colors brighter and more vibrant.

洗涤过程中的织物（如毛巾、床单、台布等）经过冲洗、预洗和主洗流程，在程序加料合理的情况下，水溶性污垢、油溶性污垢和某些固体类污垢等一般情况都可以去除掉。但对一些色素类污垢，只能通过氧化和还原作用才能去除的特殊污垢，常规洗涤是无法彻底去除掉的，必须在洗涤过程中设置漂白程序方可达到污垢全部去除。

During the washing process, fabrics (such as towels, bed sheets, tablecloths, etc.) undergo the washing, pre washing, and main washing processes. With reasonable program feeding, water-soluble dirt, oil soluble dirt, and certain solid dirt can generally be removed. However, for some pigmented dirt that can only be removed through oxidation and reduction, conventional washing cannot completely remove it. A bleaching program must be set up during the washing process to achieve complete removal of the dirt.

漂白时间的设定

Setting of bleaching time

漂白过程中时间的长短与漂白剂的释放时间有关。在理想的漂白温度和理想的洗液酸碱度（pH值10.5）中，漂白剂加料一分钟时漂白剂基本已均匀的溶于洗液中。此时有效氯均匀地释放，在6-8分钟时氯基本释放完毕，这时溶液中的有效氯的浓度在10ppm。在排水时有效氯的含量应低于10ppm，所以在有效氯释放完毕再延长漂白时间已不起作用。

The duration of the bleaching process is related to the release time of the bleaching agent. At the ideal bleaching temperature and pH value of the washing solution (10.5), the bleaching agent has almost uniformly dissolved in the washing solution after one minute of feeding. At this point, effective chlorine is uniformly released, and the chlorine is basically released within 6-8 minutes. At this time, the concentration of effective chlorine in the solution is 10ppm. The effective chlorine content should be less than 10ppm during drainage, so extending the bleaching time after the effective chlorine is released is no longer effective.

漂白温度的作用

The effect of bleaching temperature

在漂白过程中，温度对漂白效果十分重要，在漂白程序中选用氧漂还是氯漂进行漂白，可根据被漂白织物的特性及织物的颜色而选择合理的运用。

During the bleaching process, temperature is crucial for the bleaching effect. Choosing oxygen bleaching or chlorine bleaching during the bleaching process can be based on the characteristics of the bleached fabric and the color of the fabric.

漂白时温度对于氯漂是十分重要的，提高漂液的温度可提高漂白速度，缩短漂白时间。一般情况下漂白温度增加10℃可缩短一倍的漂白时间，如使用氯漂剂漂白，漂白的温度一般选择在65℃以下否则会使织物污黄、牢度下降。如使用氧漂剂可选择70℃～90℃为好。

The temperature during bleaching is very important for chlorine bleaching, and increasing the temperature of the bleaching solution can increase the bleaching speed and shorten the bleaching time. In general, increasing the bleaching temperature by 10 ℃ can shorten the bleaching time by twice. If chlorine bleach is used for bleaching, the bleaching temperature is generally selected below 65 ℃, otherwise it will cause the fabric to stain yellow and decrease its fastness. If using oxygen bleach, it is better to choose 70 ℃ to 90 ℃.

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The exciting content of this article is provided by the knowledge provided by Jinan Hotel Linen. There are also many exciting content on this website, and you can click to enter more content: http://www.jnadx.com We have dedicated customer service to answer your questions