Dust mites may be invisible, but they are constantly endangering your family’s health. These unseen critters not only make bedding products dirtier with use, but can also cause skin itching, respiratory discomfort, and other issues.

The reason these microorganisms “favor” bedding filling materials is simple:
Perfect Temperature and Humidity Match
During sleep, the human body emits sweat and skin flakes, turning comforters and pillows into a “constant-temperature incubator” of around 30°C. The humidity becomes a “paradise” for bacteria and dust mites.
Traditional Filling Materials Are Defenseless
Filling materials such as cotton and synthetic fibers have no inherent antibacterial ability, and the gaps between fibers become “hiding spots” for microorganisms. Even frequent sun-drying cannot completely remove them.
Over time, these “invisible invaders” cause bedding products to develop odors, become damp and clumpy, and even trigger allergic reactions — which explains why many people still feel itchy despite changing into freshly washed sheets.

PLA Fiber: A Plant-Derived “Antibacterial Expert”
The antibacterial and anti-mite ability of polylactic acid fiber is a natural advantage “engraved in its genes.”
PLA fiber has the characteristic of releasing lactic acid from the material itself. The lactic acid penetrates the cell membrane of bacteria (such as harmful bacteria) into the cell interior, thereby interfering with bacterial growth and achieving an “antibacterial” effect.

PLA (Polylactic Acid) Fiber’s Advantages in Antibacterial and Anti-Mite Performance
PLA fiber has outstanding antibacterial and anti-mite advantages, stemming both from its natural properties and its long-term practicality. Specifically:
1.Natural Antibacterial Ability, No Chemical Additives Required
PLA fiber is produced by polymerizing lactic acid obtained from the fermentation of plant starch. Its molecular structure naturally carries mild acidity (pH around 6), which helps reduce bacterial growth at the source.
*PLA’s antibacterial ability is “innate,” avoiding the potential skin irritation or secondary pollution that may be caused by added functional chemicals. This makes PLA fiber more friendly for babies and people with sensitive skin.

2.Long-Lasting Antibacterial Effect, Stable After Washing
PLA fiber’s antibacterial property comes from its molecular characteristics, so even after multiple washes, the mildly acidic environment remains stable.

3.Dual Anti-Mite Action: Physical + Environmental, for More Thorough Results
- Physical barrier: PLA fiber has a dense, smooth structure with small fiber gaps, making it difficult for mites to burrow in, build nests, or attach themselves — reducing their “hiding spots.”
- Environmental suppression: Mites depend on a humid environment to survive, but PLA fiber has low moisture absorption, keeping the filling material dry and destroying the mites’ living conditions.
At the same time, its mildly acidic environment also inhibits mite reproduction, achieving comprehensive mite control from “cutting off their food supply” to “preventing breeding.”

4.Odor Prevention and Extended Bedding Lifespan
Bacterial growth can make fibers brittle and cause clumping. PLA’s antibacterial property helps reduce material aging, extending the lifespan of comforters, pillows, and other bedding.
PLA fiber suppresses microbial growth at the source, reducing odor generation so bedding products can remain fresh even after long use.

Product Information
eSUN PLA short fibers can be used as filling materials for bedding and thermal clothing, such as in bed products, cotton-padded jackets, sofas and furniture, plush toys, and more. Among them, PLA Three-dimensional Crimped Staple is a representative product, which can be made from pure PLA or blended with other fibers, replacing existing polyester-based filling materials.
Product Specifications
PLA Three-dimensional Crimped Staple:Titer1.5Denier-5Denier, Length 38/51/64 mm
Regular Fibers: Titer2D, Length 38/51 mm

eSUN mainly focuses on the business of PLA fibers and nonwoven fabrics.For further information, interested customers are welcome to contact us for cooperation!