Hard Wadding & Bond-free Wadding Production Line
Complete Process Flow
Electronic weighing unboxing machine → Pre-opening → Fine opening → Mixed cotton box / Vibrating cotton feeder → Combing machine (single or double tinels are available) → Cross laying machine → Hot air oven (heat setting) → Heat setting machine (optional) → Servo slicing / Conveying machine
- Mixing and Opening: Mix 4080 low-melting fibers and three-dimensional hollow polyester fibers in proportion, using electronic weighing for the ratio. Multi-level opening to disperse the fiber clusters.
- Combing and Laying: The combing machine separates the fibers into uniform thin nets. The cross laying machine superimposes them to reach the target thickness and weight.
- Hot Air Setting (Core Station): The oven at 120-170°C penetrates with hot air, melting the low-melting fibers, cooling them and making them adhere to each other to form rigid and resilient hard cotton sheets.
- Post-processing: Heat setting and smoothing, then either continuous rolling or cutting into sheets (either roll form or sheet form can be the output).
Core Equipment List
- Electronic weighing unboxing and mixed cotton unit
- Pre-opening machine, fine opening machine
- Vibrating cotton box / Air pressure cotton feeder
- Combing machine (customers often choose double tinels with double rows of teeth for complex combing, suitable for high-weight thick cotton; single tinels are an option for low cost)
- Cross laying machine
- Hot air circulation oven (heat source can be selected: natural gas, thermal oil, electric heating; the natural gas option has the lowest operating cost for export customers)
- Heat setting machine (optional, to improve surface flatness)
- Servo slicing / Conveying machine for rolling and winding
Technical Parameters
| Parameter |
Specification |
| Finished product width |
1600–3200mm (can be widened to 4500mm for customization) |
| Finished product thickness |
5–200mm |
| Weight range |
80–3000 g/㎡, special models can reach 6000gsm |
| Output |
100–250 kg/h (high-end models with double tinels can reach 300–500 kg/h) |
| Raw materials |
PET hollow fibers + 4080 low-melting fibers; add flame retardant particles for flame-retardant hard cotton |
| Product form |
Roll form or sheet form can be selected for output |
Application Domains
- Furniture and Home Textiles: Mattress padding, tatami mats, sofa cushions, cushions (replacing sponge and brown padding)
- Acoustic Materials: Building sound absorption, automotive interior sound absorption pads (hard sound-absorbing cotton)
- Filtration: Air filtration base material
- Others: Packaging cushioning, luggage inner lining, pet pad base material
Key Advantages
No formaldehyde, resistant to water washing, good rebound, breathable, can be made flame-retardant, environmentally friendly and free of glue.