For hotels, smooth, soft, clean, and crisp linen is essential. It is the first impression of a guest room. It is also the first step in ensuring the guest experience. The room quality can be improved by white and wrinkle-free bed sheets and duvet covers, as well as smooth pillowcases. However, linen may become wrinkled and stiff after washing. Even if cleanliness meets the standards, guests will think the room hygiene is substandard. The hotel service is unprofessional. This directly causes negative reviews.
Many hotel laundry managers face such a challenge. The laundry process follows the standard machine parameters. However, linen becomes wrinkled after washing. Wrinkles become severe after drying. Ironing requires a large amount of time and labor. But wrinkles still remain. Repeated rework increases labor, water, and electricity costs. It also significantly reduces linen turnover efficiency. Actually, linen wrinkles are not due to a single process. They are caused by overlooked details throughout washing, drying, ironing, and storage.
As a laundry system integrator, Kingstar sees “consistent smoothness” as its key to equipment design and integrated plant planning. It deeply understands that high-quality linen cannot rely on later ironing. It should be protected from the first washing step.
Four Root Causes of Linen Wrinkles
● Washing stage
– Improper water temperature
When the water temperature is above 65℃, linen fibers can quickly shrink, which causes stubborn wrinkles. If the water temperature is below 30℃, cleaning performance is insufficient. Chemical residues cause linen stiffness and wrinkles.
– Incorrect processing time
Excessive washing damages fiber structures. Insufficient time leads to stain residues. It also affects fabric appearance.
– Wrong detergents
Fibers can be corroded by highly alkaline and high-concentration bleaching agents. They may also lose elasticity. Without softeners, friction can increase. This easily develops wrinkles.
● Drying stage
– Excessive temperature
High temperatures evaporate the surface moisture rapidly. The shrinkage between inner and outer fibers is uneven, which causes set-in wrinkles.
– Excessive drying
The optimal moisture content is between 8% and 12%. When the linen is completely dried, fibers become stiff while wrinkles become fixed.
– Overloading
If the loading capacity exceeds 70%, linen will have insufficient tumbling space.
● Ironing stage
– Improper temperature
Low temperatures can only remove surface wrinkles. Excessive heat may damage fabric fibers.
– Uneven pressure
Roller pressure deviation can lead to stripe-like wrinkles.
– Delayed ironing
Linen is stacked for a long time after drying. Wrinkles can set during cooling. They are difficult to remove.
● Storage
Improper folding, excessive stacking height, and high warehouse humidity can cause wrinkles.

Kingstar Overall Standardized Solutions
● Precise washing
Kingstar tunnel washer system can store up to 100 washing programs as well as 1,000 customer profiles. The washing temperature can be adjusted according to different hotel fabric types.
– Cotton linen: 40℃~60℃
– Cotton-polyester: 35℃~45℃
Automatic chemical dosing systems ensure precise dosing of neutral detergents and softeners. This avoids high-alkaline corrosion and residues.
● Scientific drying
Kingstar dryer is equipped with an online moisture monitoring system. It can monitor linen moisture in real time. If the moisture content reaches the preset level, the system will automatically stop. This avoids over-drying. The temperature can also be precisely controlled. An overhead bag conveyor system works together with dryers. It automatically distributes linen to avoid overloading. After drying, linen is automatically discharged to prevent wrinkles caused by stacking.
● Proper ironing
The ironing cylinders of Kingstar super roller ironer undergo rust-resistant polishing treatment. The smooth surface prevents chemical residues from adhering to the surface. Three sets of ironing cylinders use a double-sided ironing design. Linen can be repeatedly heated and ironed on both sides. All ironing belts have automatic tension adjustment functions. Each belt has an automatic adjustment device, which maintains consistent ironing belt tension. This protects linen from ironing belt marks.
Cylinders support real-time pressure monitoring. The left-right deviation can be automatically corrected to ensure even pressure. This further eliminates stripe-like wrinkles.
● Smart storage
Kingstar overhead bag conveyor system is connected with folders and stackers. Linen is stacked according to standard height (≤80 cm) after folding. This avoids improper manual operations. During the integrated plant planning, a constant temperature and humidity control system (humidity is between 40% and 60%) is designed for storage areas. Linen is stored away from floors and walls. This also avoids moisture absorption and linen sticking.
Industry tips:
Cotton linen has poor wrinkle recovery. It is prone to wrinkles. Polyester-cotton blends have strong wrinkle resistance. During the integrated plant planning, Kingstar can help hotel customers choose the proper material ratio. This reduces wrinkles at the source.
Conclusion
Many hotel managers misunderstand that linen wrinkles can be handled by manual ironing. In reality, later ironing can only remove surface wrinkles. If wrinkles are caused by washing and drying, the permanent deformation cannot be thoroughly addressed. Kingstar provides automatic and smart laundry equipment throughout the process. It helps laundry plants achieve proper washing and drying. Each piece of linen always maintains a crisp and new appearance from plants to guestrooms. Kingstar will be the reliable choice for processing hotel linen.
Q&A
Q1: What may cause stubborn wrinkles after linen washing?
A1: The common cause is improper drying processes (such as high temperature, excessive drying, and overloading). The shrinkage between inner and outer fibers is uneven. This forms irreversible set-in wrinkles. Kingstar dryer can monitor linen moisture content online as well as precisely control temperatures. It avoids this issue at the source.
Q2: How can Kingstar equipment control linen moisture content?
A2: Kingstar dryers are equipped with capacitive humidity sensors. They can check exhaust humidity in real time. When the moisture content reaches the preset level (such as 8%-12%), the system automatically stops heating. It enters the cooling stage. This avoids over-drying. Besides, data can be uploaded to the central management system. It is convenient for tracking and analysis.
Q3: What are the washing parameter differences between cotton linen and polyester-cotton blends?
A3: Cotton linen has good heat resistance. However, it shrinks easily. Polyester-cotton blends have lower heat resistance. Besides, Kingstar equipment has fabric identification functions. Programs can be automatically adjusted by scanning linen RFID tags.
| Cotton linen | Polyester-cotton blends | |
| Washing temperature | 40-60℃ | 35-45℃ |
| Drying temperature | 60-75℃ | 50-60℃ |
| Ironing temperature | 150-180℃ | 120-140℃ |
Post time: Sep-10-2026
