What causes web misalignment?
Roll runout, uneven winding, material curl, machine vibration, and tension variation can all shift the web path.
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How Does a Web Guiding System Work?
A web guiding system detects web position and moves a guide frame or actuator so the material stays aligned.
The control loop
A sensor reads the edge, center, printed line, or contrast mark. The controller compares that position with the target, then commands an actuator to shift the guide mechanism. This creates a real-time correction loop that helps prevent wrinkles, edge waste, and misregistration.
Typical system components
- Web guide controller for processing and control logic.
- Photoelectric, ultrasonic, or camera mark sensor for position feedback.
- Linear actuator, guide frame, or integrated EPC unit for correction.
- Operator interface for sensitivity, mode, and calibration settings.
Related KRD products
KRD supplies standalone controllers, sensors, actuators, and integrated web guiding systems.
FAQ
Can one system support different materials?
Yes, but sensor selection matters. Transparent film, paper, foil, and printed webs may need different sensor types.
Where should the sensor be installed?
The sensor should be installed where it can read a stable edge or mark before the correction point.
Contact KRD Automation for a customized solution
Tell us your material, web width, line speed, and guiding mode.