What is the ideal storage temperature range for polyester hot melt yarn?

What is the ideal storage temperature range for polyester hot melt yarn?

As a special functional fiber, polyester hot melt yarn plays an important role in the textile industry. With its unique low melting point characteristics, it can quickly melt and bond to other materials at a specific temperature, thereby achieving material bonding without the use of chemical adhesives. However, in order to maintain these characteristics of polyester hot melt yarn and ensure that it can play the best effect in subsequent use, correct storage conditions are essential. This article will explore the ideal storage temperature range for polyester hot melt yarn.

Characteristics of polyester hot melt yarn
Polyester hot melt yarn, also known as low melting point fiber, can have its melting point controlled by adjusting the raw material characteristics. According to the search results, the melting point of polyester hot melt yarn is generally between 110℃ and 180℃. This fiber remains stable at room temperature, but melts at a temperature exceeding its melting point, thereby achieving bonding with other fibers.

Ideal storage temperature range
Considering the melting point characteristics of polyester hot melt yarn, its ideal storage temperature range should be far away from its melting point to prevent accidental melting. The ideal storage temperature should be kept at room temperature, and the recommended temperature range is usually 10℃ to 30℃. This temperature range can prevent the polyester hot melt from becoming brittle due to low temperature and from melting due to high temperature.

Humidity control
In addition to temperature, humidity is also an important factor affecting the storage of polyester hot melt. Excessive humidity may cause the fiber to absorb moisture, thus affecting its performance. Therefore, controlling the relative humidity between 50% and 70% is a more ideal storage condition

Avoid direct sunlight
Direct sunlight may cause the temperature to rise, thereby increasing the risk of melting of polyester hot melt. Therefore, avoid exposing the polyester hot melt directly to sunlight during storage

Summary
In summary, in order to ensure that the polyester hot melt maintains its excellent bonding properties and physical and chemical stability, the ideal storage temperature range should be controlled between 10℃ and 30℃, the relative humidity should be maintained at 50% to 70%, and direct sunlight should be avoided. Following these storage conditions can maximize the service life of the polyester hot melt and ensure that it performs best in subsequent applications.

What happens to polyester hot melt when the humidity exceeds 70%?

When the humidity exceeds 70%, polyester hot melt will be mainly affected by the following aspects:

Increased hygroscopicity: Polyester itself has low hygroscopicity, and the moisture regain of polyester under standard conditions is 0.4%. When the ambient humidity exceeds 70%, the polyester hot melt will absorb more moisture, which may cause changes in its physical properties, such as strength and ductility.

Decrease in material strength: Since the strength of polyester hot melt will decrease when wet, the increase in humidity may cause its strength to further decrease, affecting its reliability and durability during use

Static electricity: Polyester is prone to static electricity in a dry environment due to its low hygroscopicity. However, in a high humidity environment, although the static electricity problem may be alleviated, the surface of the polyester hot melt may become wet due to excessive humidity, which may affect its bonding with other materials, especially during the hot melt process

Microbial growth: In a high humidity environment, polyester hot melt may become a hotbed for microbial growth, especially when the temperature is also high. This may cause the material to degrade or become damaged, affecting its quality and service life.

Storage and service life: High humidity environments may shorten the storage and service life of polyester thermal fuses. Due to the relatively low melting point of polyester thermal fuses, high humidity may accelerate the aging process of the material, especially during storage

Therefore, in order to maintain the optimal performance of polyester thermal fuses and extend their service life, it is recommended to store them in an environment with a relative humidity of no more than 70% to avoid the above potential problems.