In laundry plants, moisture extraction rate is closely connected with energy consumption. However, moisture extraction rate affects not only energy consumption, but also linen lifespan. This article focuses on moisture extraction rate. It will analyze its significant impact on drying costs, fabric lifespan, and even profit margins of both the laundry plants and the hotel customers. Moisture extraction rate is not just a technical parameter. It represents hidden economics that deserve careful calculation.
Drying Affects Linen Lifespan
Many laundry plants may overlook that dryers cause more damage to fabrics like towels and bath towels than the washing process. In 2012, experimental data from an international textile research institution drew wide attention. When a towel undergoes 50 cycles in a 65℃ dryer, its tensile strength is reduced by nearly half. In other words, a towel could originally withstand 300 washing cycles. If it undergoes excessive drying each time, its actual lifespan may be reduced to 150 cycles or even shorter.
The reason is that dryers evaporate moisture by relying on hot air and mechanical rotation. The two forces can damage fibers. High temperature accelerates fiber oxidation. Mechanical rotation continuously rubs the fabric surface, causing fiber fuzzing and yarn thinning. Longer drying time worsens this combined damage. Therefore, reducing drying time essentially extends linen lifespan.
Extraction directly determines the drying time. After the extraction stage, the residual moisture content of towels greatly affects the water volume that needs to be evaporated. This further determines how long dryers should operate.
Difference in Extraction Performance
G-force is a key indicator for assessing the extraction performance of a traditional industrial washer. This value is the machine’s physical separation capability.
● Low extraction force (below 250 G)
After extraction, the linen still feels damp. Its residual moisture content is between 80% and 100%. For example, 100 kg towels may retain 80-100 kg of moisture after extraction. A dryer may require over one hour to completely evaporate the moisture.
● Medium extraction force (around 300 G)
The residual moisture content may be reduced to 65%-70%. The drying time can be shortened to 50 minutes.
● High extraction force (over 400 G)
The residual moisture content can be reduced to 50%-60%. After extraction, 100 kg towels only contain 50-60 kg of moisture. The drying time can be reduced to 30-40 minutes.
The difference between high and low extraction force is not several percentage points, but 30-40 kg of residual moisture. Convert to steam consumption. Evaporating 1 kg of water requires 0.8-1.2 kg of steam (It depends on heating efficiency). 30-50 kg of steam can be saved per drying batch. For 20 batches per day, large amounts of steam are saved. More importantly, shortened 20%-30% of drying time means towels rotating in the high-temperature drum also reduces. After hundreds of cycles, fiber tensile strength is quite different.
Economic Importance of Extending Linen Lifespan
High moisture extraction rate not only saves steam and electricity costs, but also reduces linen purchase costs.
Hotel guests directly contact the linen. Its whiteness, softness, and integrity affect customer experience. Laundry plants can improve the moisture extraction rate, extending each towel’s lifespan from 200 to 260 washing cycles. Therefore, hotels can reduce 20%-25% of expenses on linen purchase per year. For laundry plants, this is not to help customers save money, but to increase their retention and referral rates. Data visibly tells customers that their towels can be used for an extra three months. This is more reliable than any oral commitment.
Besides, due to faster warming up and more even heating, towels with low residual moisture content become softer and fluffier after drying. This provides a quality premium space for laundry services. This technical indicator, moisture extraction rate, is not a simple value, but a technical parameter that affects laundry plants’ and hotels’ costs.
Other Methods for Extending Linen Lifespan
High moisture extraction rate is a cornerstone of extending linen lifespan. Laundry plants whose linen lifespan is noticeably longer than their competitors also focus on the following details.
● Chemical dosage
Excessive alkaline agents or bleaching agents accelerate fiber weakening. It is recommended to use an automatic chemical dosing system and regularly check the dosage. Kingstar industrial washer can connect to various chemical dispensers to achieve precision dosing. Kingstar tunnel washer can achieve more accurate dosing according to the weight and formulation.
● Linen sorting
Towels, bed sheets, and napkins can be cleaned according to soil levels and fabric types. This helps prevent fabric damage caused by high-strength programs.
● Load capacity
Strictly follow the rated load capacity of different industrial washers. Overloading causes uneven mechanical action and excessive local friction. Underloading wastes water and electricity as well as results in excessive tumbling action.
● Softener usage
Although a softener can improve hand feel, its components easily form buildup on the fiber surface to affect capillary absorption. This further influences the following water absorption and reduces extraction performance. Therefore, use it moderately according to product instructions rather than excessive use for a soft hand feel.
● Equipment maintenance
Regularly check the industrial washer’s bearing clearance, the press extractor’s sealing ring, and the dryer’s temperature sensor. Any deviation can affect the extraction performance.
Conclusion
Moisture extraction rate is not a percentage, but an efficiency driver throughout the entire process. At the front end, it is connected with water, electricity, and steam. At the mid end, it determines the drying efficiency. At the back end, it affects the linen replacement cycle and customer satisfaction. Today, competition in the global laundry industry has become increasingly severe. Traditional operations have limited growth potential. Moisture extraction rate is key to widening the profit gap.
Q&A
Q1: How long does a Kingstar 100 kg dryer take to process towels?
A1: Under a steam pressure of 5 bar, it only requires 40 minutes for drying towels.
Q2: What is the moisture extraction rate of the Kingstar press extractor?
A2: After extraction, the residual moisture content of towels is 45%-50%.
Q3: What is the pressure of the Kingstar press extractor?
A3:
Towels: 40-45 bar
Bed sheets/duvet covers: 33-35 bar
Post time: Aug-07-2026