How can the breathability of jersey fabric be improved?

Outline fibers and finer fibers
Replace the circular PET with a “+” or “Y”-shaped cross-section of 1.0–1.2 D; longitudinal grooves serve as air channels, increasing breathability by 18–25%.

Blend 30–40% high-resilience Sorona®
Its helical molecular chains increase yarn stiffness, resulting in a looser, fluffier fabric; for the same weight, the thickness increases by 0.15 mm and air permeability rises by 15%.

Moisture-Absorbing Two-Component Yarn
60% hydrophilic Coolsun® core yarn + 40% hydrophobic PET outer layer (60/40), 32-count; sweat is drawn to the surface and evaporates rapidly, reducing vapor resistance by 0.8 m²·K·W⁻¹.

Reduce needle density
On a 28G single-bed knitting machine, the feeders were reduced from 102 to 92; the stitches per centimeter decreased by 5%, air permeability increased from 95 to 125 mm/s, and burst strength remained ≥350 kPa.

Foldable mesh with micro-pores
Insert one folded stitch for every 25 stitches → a 0.8-mm aperture covers approximately 2% of the surface; airflow increases by 20%, with no noticeable holes, making it ideal for close-fitting T-shirts.

Zonal ridge-floating needle
The floating needle portion protrudes 0.25 mm above the base, reducing skin contact by 50%; steam flows beneath the “bridge,” increasing the maximum heat flux density by 0.05 W/cm² and providing a noticeably cooler sensation.

Hydrophilic finishing agent LP-688, 15 g/L
Pad-dry at 170°C for 30 seconds; grafting polar functional groups reduces the contact angle from 110° to 55° and increases water vapor permeability by 12%, further enhancing “wet” breathability.

Mechanical microfibrillation + cold-rolling bright finishing
Light 40°C calendering reduces thickness by 10%, followed by air softening to enhance surface microfibers; pore size increases, resulting in a 10% improvement in breathability while maintaining a soft hand feel.