Laundry plants always think that the lower the rewash rate of the hotels is, the better, which saves more labor, chemicals, water, electricity, gas, and so on. However, this is actually a misunderstanding. Why? Let’s talk about this topic.
Rewash Rate
Rewash rate is the percentage of linen that needs to be rewashed of the total number of washed linen. If 5 kg of linen needs to be re-washed after every 100kg of linen is washed, its re-washing rate is 5%. Although the laundry industry has no specific value for the rewashing rate, the rewashing rate is generally below 5% according to the washing quality of linen and hygienic standards. It is not the lower, the better.
Professionals can assess the washing quality based on the rewash rate of the laundry plants. The circumstances are as follows.
Rewash Rate More than 5%
It shows that the laundry plant’s washing quality is poor. High rewash rate causes a huge waste of chemicals, labor, water, electricity, and gas. Laundry plants should find reasons for it in terms of many links.
● Washing process
If the laundry equipment, water quality, washing temperature, water level, time, loading volume, and so on all meet the standard washing requirements, the possible problems may be the degree of dirt on linen and the unmatched chemical dosage. In this condition, staff in laundry plants can adjust the addition of chemicals to reduce the rewash rate. The type of chemicals and dosage of chemicals rely on the type of dirt or stains on the linen that need to be rewashed.
- Particle
Add more chemicals during the main wash.
- Oil
Increase the alkalinity and increase the chemicals that remove oil.
- Pigment
Add more bleaching agents.
Careful sorting should be done before washing, and heavily soiled linen must be washed separately because mixed washing easily causes decreased washing quality and increases the rewash rate.
● Chemicals
If the chemicals have poor quality, they cannot lower the rewash rate despite their dosage. In addition, if rinsing is not sufficient, the residual chemicals can easily attach to linen, and then they form new stains. As a result, the rewash rate increases instead of decreasing. In this condition, laundry plants should recall whether they have changed the chemicals or not. They should change the chemicals if the decreased washing quality is caused by chemicals.
Rewash Rate Low Than 1%
This means that the washing quality is very high. Although it’s good in terms of rewash rate, after careful calculation, the washing cost increases due to the increased addition of chemicals. To reduce the rewash rate (2% to 3%), 98% of linen experiences excessive washing. This causes damage to the linen, shortens the service life of the linen, and easily triggers the customers’ dissatisfaction. Especially in the laundry plants that use shared linen, the shortened linen service life will greatly improve the purchase cost of the linen.
Rewash Rate Between 2% and 4%
The long-term experience from laundry plants shows that controlling the rewash rate to about 3% is reasonable. On this basis, the washing costs decrease, and the service life of linen can reach the standards. As a result, it’s an ideal status. In addition, laundry plants should set the operations that meet the customers’ requirements according to the specific quality requirements.
Therefore, in laundry factories, there is no need to excessively pursue a low rewash rate. The rate should be controlled within a reasonable range. By virtue of refined and intelligent management, the rewash rate should be steadily approaching 2%. To achieve this goal, it is necessary to rely on standardized processes and intelligent equipment.
Using the CLM tunnel washer can eliminate the manual operation in the beginning. Its computer control system can precisely set and run each step. The amount and timing of chemical material addition, water temperature at each stage, and process duration are all right to ensure the same washing quality.
In addition, the manual sorting process in the early stage is very important. By careful sorting and timely removal of mixed foreign items in linen, the heavily soiled linen can be pre-treated and washed separately. This can effectively avoid cross-contamination and secondary damage, and lay a solid foundation for the following high-efficiency main wash.
Conclusion
The scientific rewash rate management is not blindly pursuing the lowest number. It is standardizing the process and refining the sorting by virtue of intelligent equipment. It is achieving the balance between costs and benefits on the premise of linen quality and service life. This is a core management mindset that shifts from extensive handling to refined operation.
Post time: Jan-22-2026