Soft Cloudy Hollow Fiber 3D*38MM,ollow Channel Thermal Insulation Fiber for Indoor Textile Filler,Pillow filling, mattress filling, etc.
Our 3D*38MM Cloudy Hollow Polyester Staple Fiber is a premium hollow filling staple fiber specially designed for comfortable textile padding. With standard specification of 3 denier fineness and 38mm staple length, each fiber features an independent hollow channel inside. The hollow structure traps static air to deliver superior thermal insulation and remarkable bulkiness.
Named Cloudy Fiber for its cloud-like fluffy touch, it maintains long-lasting resilience after repeated squeezing, effectively avoiding flattening and collapse compared with ordinary solid polyester fiber. Uniform mechanical crimp ensures great entanglement performance, easy opening and stable filling effect on automatic filling machines.
This versatile hollow filling fiber is widely adopted in home textiles, plush toys, pet supplies and thermal wadding manufacturing. Suitable for automated filling lines and nonwoven wadding production, ideal for manufacturers pursuing lightweight, fluffy and durable filling materials.
- Home Textile Filling - Pillows, sleeping quilts, throw cushions, mattress inner padding, bed rest bolster
- Plush Toy & Crafts - Stuffed animals, dolls, decorative craft filling
- Pet Supplies - Pet bed, kennel padding, pet mat inner filler
- Clothing Thermal Materials - Jacket wadding, vest insulation padding
- Nonwoven Wadding Production - Fluffy thermal bonded wadding for household textiles




| Product Name | Cloudy Hollow Polyester Staple Fiber |
|---|---|
| Specification | 3D * 38MM |
| Raw Material | Polyester PET |
| Structure | Hollow inside fiber |
| Color | Raw White |
| Feature | Lightweight, high loft, fluffy, resilient, breathable, thermal insulation |
| Surface Treatment | Siliconized (soft finish, standard) |
| Applicable Equipment | Automatic filling machine, carding machine, thermal bonding production line |
| Main Applications | Pillow, quilt, cushion, pet bed, plush toy, mattress padding, garment thermal wadding |
| Package | Export compressed bale / 25kg woven bag |
| MOQ | Negotiable for bulk orders |
Internal hollow cavity locks air, providing excellent heat retention. Lighter weight than solid fiber under equal bulk, reducing finished product transportation cost and improving wearing comfort.
Siliconized surface delivers soft cloud-like hand feel. Great bulkiness brings plump visual effect for pillows, cushions and quilts, greatly enhancing product attractiveness for end consumers.
Resists permanent deformation after long-term compression. Filled products stay plump for a long service cycle, reducing customer complaints about flattening padding.
3D fine-medium denier balances softness and support; 38mm length suits most automatic fiber filling equipment. Smooth opening, low static and less fiber blockage during continuous production.
Hollow channel improves air circulation inside padding. Finished bedding and cushions maintain comfortable breathability, not easy to accumulate moisture.
Stable crimp rate, fineness and length among batches. Can blend with low melting fiber, solid fiber to make composite wadding for diversified production demands.
Many ordinary solid filling fibers lack loft and become flat quickly. Low-quality hollow fiber often has inconsistent hollow rate, poor resilience and lots of broken filaments.
We strictly control hollow rate and crimp uniformity during spinning. Every batch of Cloudy Fiber passes loft and compression recovery test before delivery. Optimized siliconized oil formula lowers static electricity, ensures smooth running on automatic filling machines.
We provide test samples for machine trial filling. Long-term bulk orders are supported with stable delivery schedule and negotiable factory price.
hollow fiber thermal insulation fiber
,3D polyester staple fiber filler
,soft cloudy pillow filling fiber
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