Automobile Headliner Dry Automatic Line: field notes from the trim shop

When you evaluate Automotive Manufacturing Equipment, you quickly learn that headliners are a quiet battleground: weight, NVH, and finish quality all collide on the same line. This dry automatic line, built in Chongqing (No.398, Qianxing Road, Qiantang Town, Hechuan District, P.R.C), is one of those systems that looks simple until you watch it run. To be honest, the rhythm is what sold me—steady, predictable, and fast.

What it does (and why it matters)

The line heats a hemp-fiber base mat (with binder) via infrared ceramic ovens, then forms it with a fabric face—knitted or non-woven—by cold pressing in a matched mold. Chain-type through structure, double ovens, uniform conveying rhythm; in practice, the takt can hit 60 s/piece when upstream feeding is stable. I guess what surprised me most was how even the preheat feels; hot air systems can be fussy, but IR ceramic tiles are remarkably consistent across the mat.

Process flow at a glance

• Materials: hemp fiber mat + PP/PET binder; face fabric (knitted or non-woven); optional adhesive web.
• Automatic feeding → needling/positioning → IR ceramic preheat (double oven) → conveying hanging chain → mold loading → cold press forming → trimming/inspection.
• Testing gates: thickness/density (ISO 845), peel/adhesion (ASTM D903), flammability (FMVSS 302 / ISO 3795), odor/VOC (VDA 270/278), colorfastness (ISO 105-X12).

Product specifications (typical)

Where it fits

• Tier-1 interior trim plants, OEM pilot lines, commercial vehicle upfitters.
• Programs emphasizing light weight, NVH, and consistent appearance.
• Plants seeking faster takt without the variability of pure hot-air systems.

Advantages I’ve heard customers mention: neater fiber loft, less yellowing, and fewer “cold corners.” The uniform chain rhythm helps quality teams hold Cpk on thickness. In fact, one trial (internal, single shift) showed Cpk ≈ 1.45 at ±0.3 mm thickness tolerance—your mileage will vary with material blend and mold design.

Vendor comparison (field summary)

Customization, lifecycle, and standards

• Customization: working width, oven zones, fabric feeding, robotic pick-and-place, inline trimming, vision checks.
• Service life: chain conveyor 5–8 years before major overhaul; IR tiles ≈ 15,000–25,000 h (real-world usage dependent).
• Quality/safety: IATF 16949 process alignment; machinery safety per ISO 12100 and (optionally) ISO 13849-1 PL d on safety circuits.

Real-world note

Day-to-day, operators like the HMI recipe recall (less fiddling), maintenance likes the tile accessibility, and managers like the scrap trend lines. If you’re benchmarking Automotive Manufacturing Equipment for interiors, watch the oven-to-press handoff: this line’s hanging chain and nailing/needling alignment keep the mat where it should be. Small thing, big payoff.

Origin: No.398, Qianxing Road, Qiantang Town, Hechuan District, Chongqing, P.R.C. Many customers say support response has been quick—my experience was similar, actually.

References

1. FMVSS 302: Flammability of Interior Materials, NHTSA.
2. ISO 3795: Road vehicles — Determination of burning behavior of interior materials.
3. VDA 278: Thermal Desorption Analysis of Organic Emissions for Interior Materials.
4. IATF 16949:2016 — Automotive Quality Management System Requirements.
5. ISO 12100: Safety of machinery — General principles for design.
6. ISO 13849-1: Safety of machinery — Safety-related parts of control systems.