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Wadding and Mattress Production Line — Complete Thermal Bonding Line for HCS and LMF Polyester Wadding
Polyester wadding — thermally bonded sheets of HCS fill fiber and LMF bicomponent binder fiber — is the insulation and padding material inside quilted jackets, mattress toppers, duvets, sleeping bags, automotive door panels, and toy fill wadding. The production of this wadding requires a specific sequence of machines: fiber opening, carding, cross-lapping, and through-air bonding. VNPOLYFIBER supplies complete thermal bonding wadding production lines alongside the matched HCS and LMF fiber they process — a single-source solution for wadding manufacturers.
What a Thermal Bonding Wadding Line Produces
A complete thermal bonding wadding line converts loose fiber bales into finished roll goods of bonded wadding at specified basis weights, widths, and thicknesses. The output — typically 30–400 g/m² thermally bonded polyester batting — is supplied to:
- Garment manufacturers: Quilted jacket and coat insulation layers (30–150 g/m²); sleeping bag fill wadding; vest and gilet insulation.
- Bedding manufacturers: Mattress topper fill layer (200–400 g/m²); duvet inner batting; pillow top layers; mattress panel quilting layer.
- Automotive suppliers: Door panel insulator (100–400 g/m²); headliner backing; trunk liner thermal and acoustic layer.
- Technical applications: Acoustic insulation; filtration batting; HVAC duct insulation; packaging insulation.
Complete Thermal Bonding Wadding Line — Machine Sequence
- Bale openers (×2): Separate openers for HCS structural fiber and LMF binder fiber. Critical to have independent feed control for accurate blend ratio management.
- Blending hopper: Combines HCS and LMF at the specified blend ratio (typically 80/20 or 75/25 HCS/LMF). Auto-weighing or volumetric blending control for consistent ratio throughout production.
- Carding machine: Forms the blended fiber into a uniform thin web. For wadding production, double-doffer carding machine recommended for higher output. Auto-leveling for web weight consistency.
- Cross-lapper: Traverses the carded web back and forth across the production width, building up multiple layers to achieve the target wadding basis weight. Cross-lap angle and layer count determine MD/CD strength balance.
- Through-air bonding oven: The bonding heart of the line. Hot air drawn through the web (top and bottom) melts the LMF sheath, bonding HCS fibers at contact points. Temperature precisely controlled to the LMF sheath melt point (typically 130–160°C oven air temperature for 130°C sheath melt LMF). Web speed controls dwell time.
- Cooling section: Bonded web passes through ambient air cooling section to set the thermal bonds before winding. Insufficient cooling causes bonds to break at the winder.
- Slitter and winder: Finished wadding is slit to target width and wound onto rolls at specified roll weight. Roll length and weight standardized for customer requirements.
Technical Specifications — Complete Line
| Parameter | Standard Specification Range |
| Production width | 1,000 – 2,800 mm (specify to suit downstream quilting or cutting equipment) |
| Output basis weight | 20 – 400 g/m² (single pass; higher weights via cross-lapping) |
| Line speed | 5 – 30 m/min (lower speed for heavier weights; higher speed for lighter wadding) |
| Production capacity | 200 – 2,000 kg/hour depending on line width and speed |
| Oven temperature range | 120 – 200°C (specify to LMF sheath melt point + 20–40°C margin) |
| Oven length | 8 – 20 m (longer oven = more dwell time = bonding at higher line speed) |
| Roll width | 500 – 2,800 mm (single width or slit rolls to specification) |
| Roll weight | 50 – 300 kg per roll |
| Total line footprint | 30 – 80 m length depending on configuration |
| Total power | 100 – 300 kW for complete line (oven is largest power consumer) |
Matched Fiber Specification: HCS + LMF for Thermal Bonding
| Fiber Component | Specification and Function in Wadding Production |
| HCS siliconized PSF (structural fiber) | 75–85% of blend. Provides the loft, softness, warmth, and loft recovery of the finished wadding. Denier selection: 3D–4D for premium fine-soft wadding; 6D–7D for standard wadding; 7D–12D for firm automotive or mattress applications. Conjugate crimp essential for loft recovery in finished product. OEKO-TEX Class I for children’s products. |
| LMF bicomponent bico fiber (binder) | 15–25% of blend. Co-PET sheath melts at oven temperature (110°C, 120°C, 130°C, or 150°C sheath options). PET core remains solid. Melted sheath bonds HCS fibers at crosspoints — creating the coherent, shape-stable wadding structure without chemical binder. Standard specification: 4D × 51mm, 130°C sheath for most wadding applications. |
Temperature management is the most critical process variable in thermal bonding wadding production. Oven temperature must be above the LMF sheath melt point (bonds form) but below the HCS core melt point (structure maintained). For 130°C sheath melt LMF + standard PET HCS: optimal oven temperature range is 145–185°C — a 40°C process window. Too low: incomplete bonds; soft, fragile wadding. Too high: over-melting causes dense, stiff, boardy wadding losing loft. VNPOLYFIBER provides startup temperature guidance for our specific LMF grades.
Order the Complete Line and Fiber from VNPOLYFIBER
VNPOLYFIBER supplies complete thermal bonding wadding lines (bale openers, blending hopper, carding machine, cross-lapper, through-air bonding oven, cooling, winder) alongside matched HCS + LMF fiber supply. Our team provides process specification alignment — confirming fiber grades, oven temperature settings, blend ratios, and line speed targets for your specific product requirements before production begins.
Contact VNPOLYFIBER with your target wadding specification (basis weight, width, application, production volume) for a complete machinery and fiber quotation.