Device and method for detecting and measuring fiber properties

US6025727A · kind A · utility

Assignee

• Instrumar Limited · CA

Inventors

• Stuart Inkpen · St. John's, CA
• Dana Linfield · Portugal Cove - St. Philip's, CA
• Christopher D. Nolan · Syracuse, US
• John Hall · St. John's, CA
• Christopher H. Marshall · St. John's, CA
• Heather Lynn Spearns · St. John's, CA

Key dates

• Filing date: Nov 20, 1998
• Grant date: Feb 15, 2000
• Expiry date: Nov 20, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/365
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device and method for measuring changes in denier, percent finish-on-yarn, interlacing of polymer fiber, and other fiber properties, in real time as the fiber is being manufactured. The device uses an electrode driven at a discrete voltage to induce a current which changes in amplitude and/or phase in response to changes in denier, finish-on-yarn and/or interlacing of a fiber. A sensing system samples the current and detects changes in the amplitude and/or phase. A computer, running an application program, quantifies the change and determines the applicable property.