# Selvage guiding for textiles - contrast sensing

> We were approached by a customer in the textile area to provide a solution for guiding a textile web base on the center selvage. Our solution involved contrast sensing to provide a selvage guiding application. The problem - Center selvage guiding Our customer is a textile operation in the US Midw...

**Last updated:** 2021-07-15

**Source:** https://live-roll2roll.pantheonsite.io/testimonials/selvage-guiding-textiles-contrast-sensing

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We were approached by a customer in the textile area to provide a solution for guiding a textile web base on the center selvage. Our solution involved contrast sensing to provide a selvage guiding application.



## The problem - Center selvage guiding



Our customer is a textile operation in the US Midwest that develops and manufactures advanced textiles for multiple applications. In one of their converting processes they had a fabric that included a center selvage. They wanted to guide the web based on the center selvage.



![Center Selvage in a Textile Web - Selvage Guiding](https://r2r.tech/sites/default/files/inline-images/Center%20Selvage%20Guiding.jpg)



They had no reasonable solution and had developed an in-house system that did not provide a satisfactory result. Our solution involved a contrast sensing application. 



## The solution - Contrast sensing application



We offered them a [SCU5 controller](https://r2r.tech/products/roll-2-roll-controller) and [WPS 221 white light sensor](https://r2r.tech/products/wps-221) to connect to their current web guiding system. This would provide a detection of the position of the selvage within the specified tolerances and would give the output to the web guide mechanism to correctly position the web.



Once the personnel became familiar with the system they were satisfied with the results of the selvage guiding application.



## Customer opinion



> ### “Really unique system, a truly custom product”



James Iglesias, Maintenance Engineer for our customer’s operation, had these words to say about the application:



> “We like that the solution is plug and play, and very dependable. Very helpful in the operation, it is a lifesaver. It is a really unique system, a truly custom product ”



Regarding the service provided, Mr. Iglesias further stated:



> “We had a little bit of an issue at first, but once we understood the operation of the system it became very simple. We are very satisfied with the service provided by the technical team”

## Related Products

- WPS 221
- Web Position Sensor
- Web Guide Controller

**Tags:** WPS 221, Web Position Sensor, Web Guide Controller

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## About Roll-2-Roll Technologies

Roll-2-Roll Technologies designs and manufactures patented fiber-optic web position sensors and advanced web guiding controllers — the precision measurement and control core of modern roll-to-roll manufacturing. Spun out of Oklahoma State University's Web Handling Research Center and trusted by Fortune 500 medical, battery, and nonwovens manufacturers, our patented sensors work without recalibration at ±0.1mm accuracy up to 760 mpm — typical customer outcomes are 50%+ less downtime and payback under six months. Headquartered in Stillwater, Oklahoma, our team of PhDs, controls engineers, and industry veterans extends the sensor + controller core into complete web guide systems including stepper-motor-based linear actuators (RLA, BLA, LHS).

- Website: https://r2r.tech
- Phone: +1 (888) 290-3215
- Email: sales@r2r.tech