When washing the hotel bed sheets, quilt, pillowcases, table cloth, linen, often encounter a special stains ---- drag marks. It is difficult to completely remove the drag marks by using a conventional washing method; while using a high concentration of chemical agents or applying excessive mechanical force to scrape and rub the stains, the cloth is seriously damaged and local damage is caused. Therefore, this stain makes the washing staff difficult and has a headache. Laundry equipment, industrial washing machines, washing machines, washing equipment
The following is a brief introduction to the generation and removal of drag marks.
First, the formation of drag marks laundry room equipment, industrial washing machines, washing machinery, washing equipment
To get rid of drag marks quickly and safely, first figure out how the drag marks are formed. Generally, such a situation will form a drag:
　　 1. Drag the linen (sheets, duvet covers, pillow bags, etc.) on the floor.
　　 2. When the cloth is stacked on a hard floor (marble, tile, etc.), it is stepped on by the staff.
　　 3. When the staff cleans, use cloth to wipe the items (such as ashtrays, etc.).
By analyzing the formation of the drag marks, it is found that they have two common characteristics. One is that the cloth is relatively dry when the drag marks are formed, and the other is that the cloth has strong friction with other objects when the drag marks are formed.
Second, the reason why the drag is difficult to remove, laundry equipment, industrial washing machines, washing machinery, washing equipment
In the physics class of middle school, the generation of static electricity was mentioned. One experiment is that the glass rod rubs against the silk to generate a positive charge. The other experiment is that the friction between the rubber rod and the fur produces a negative charge. It can be known from the above two experiments that the friction generates electric charge. .
In the process of dragging, when the cloth is rubbed against the floor, the sole, and the article, a large amount of electric charge is generated. In general, dust and dirt particles carry a certain amount of charge. When no friction occurs, the particles are simply attached to the surface of the cloth. After rubbing, a large amount of electric charge is generated on the surface of the fiber. The charge on the surface of the fiber and the charge carried by the dust and dirt particles are opposite in polarity, which creates a strong attraction, just as the positive and negative poles of the magnet attract each other. It is this attraction that causes dust and dirt particles to adhere strongly to the surface of the fabric fibers, which is very difficult to remove. Moreover, the drier the surface of the fabric, the more charge generated by the friction, and the greater the attraction between the charges.
Third, the principle of removing drag marks laundry equipment, industrial washing machines, washing machinery, washing equipment
After understanding the causes of the drag marks, you can do it in a targeted manner.
To remove dust and dirt particles, the charge attraction between them and the fabric fibers must first be destroyed. After the attraction is destroyed, the dust and dirt particles and the fiber surface will be restored to a simple attachment relationship, which can be easily Remove the ground.
To destroy the gravitational pull between positive and negative charges, it is necessary to destroy the charge attraction between dust and dirt particles with a more ionically active substance. For example: particles such as dirt carry a positive charge, and the surface of the fiber carries a negative charge. The positive and negative charges are firmly attracted and difficult to separate. At this time, another ion (called a third-party ion) can be found. The negative charge of this ion carries the gravitational force of the negative charge on the surface of the fiber, and the ion and the fiber surface are surrounded by the ion. A phenomenon similar to the third party in marriage life, its negative charge will take away dirt particles from the surface of the fiber. Among the chemical raw materials commonly used in laundry, there are several materials having this function.
According to the strength of the ionic activity, the following are arranged: dry cleaning oil, caustic soda aqueous solution, strong washing powder, potassium permanganate solution, oxalic acid solution.
Fourth, the method of removing drag marks laundry equipment, industrial washing machines, washing machinery, washing equipment
　　 1. Slight drag: When dissolving, dissolve the washing powder first, then soak the fabric with drag marks into the washing powder solution. After 10 minutes, brush it and apply a certain mechanical force to remove it.
　　 2 , more stubborn drag: first soak the cloth, then use dry cleaning oil (also called dry cleaning soap oil) on the drag mark, wait 20 minutes, then brush with a brush, brush into the machine to wash normally, Can be removed. You don't have to wait until all the stains disappear after brushing. As long as most of the stains have been removed or faded, you can go into the normal washing process and the residual stains will be completely removed during the washing process.
5. Precautions for handling drag marks Laundry equipment, industrial washing machines, washing machines, washing equipment
It is important to be clear about the handling of the drag marks. Any washing method will cause different degrees of damage to the linen. All washing personnel have the responsibility to remind the relevant personnel to pay attention to the following matters when using the linen:
　　 1. The replaced linen is strictly prohibited to be stacked directly on the floor, especially marble floors, tile floors and concrete floors.
　　 2 , it is strictly forbidden to step on the cloth, especially wearing hard shoes and stepping on the cloth.
　　 3. Do not use cloth as a cleaning tool to wipe the items.
　　 4. The cloth that finds special dirt should be sorted out in time and handed over to the washing staff for disposal as soon as possible.
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