Back to Digital Systems

Closed-loop Uniformity Control System

Typical Customer Problems

In production practice, common issues include:

Our Approach

We implement cross-direction segmented drafting + closed-loop basis weight correction:

01

Real-time Measurement

  • Real-time measurement of CD basis weight profile
02

Target Calculation

  • Automatic calculation of target drafting ratios for each zone
03

Segmented Adjustment

  • Segmented dynamic adjustment of fiber web
04

Closed-loop Correction

  • Closed-loop correction for continuous profile stabilization
System Capabilities
01

Detection

  • End-of-line QCS scanner measuring CD basis weight profile in real time
02

Algorithm

  • Identification of edge-heavy zones (typical “smile effect”)
  • Calculation of zone-specific drafting ratios
03

Execution

  • Segmented dynamic drafting device installed at cross-lapper inlet
  • Higher drafting applied at edges → local thinning
  • Normal drafting at center → overall profile leveling
04

Closed Loop

  • Drafting force → basis weight change → scanner feedback → parameter correction
BEFORE

Without the system:

→ Typical “smile-shaped” distribution (heavier edges, lighter center)

AFTER

With the system:

Value to Customers
Suitable Applications
  • High-uniformity nonwoven products
  • Filtration materials
  • Spunbond base fabrics
  • Wide-width needle-punched products
Factory visit

Interested in digital simulation for your production line?

Contact Our Team

Phone

+86 13502962948

Email

yangbo@sanfai.com

WhatsApp

+86 13502962948