Goulston | Surface Modification Technologies

Spandex Fiber Lubricants & Finishes | Lurol

A Leader in Spandex Spin Finish Technology

Partner with Goulston for spandex fiber base lubricants and additives to optimize production and wow end users. We’ve been engineering spandex lubricants for almost as long as the fiber has existed, and we deliver a consistent supply of quality products. Stay ahead of the competition with Goulston’s extensive knowledge of the industry’s leading elastomeric fiber producers.

Lurol High-Performance Spandex Finishes

With a history of innovative R&D, Goulston customizes spin finishes for your unique spandex process and polymer. Our spandex fiber additives and base lubricants are designed for high performance during production and at the end user.


Our portfolio of Lurol® spandex finishes is formulated to meet the increasing performance demands of varied end uses, including warp knitting, circular knitting, covering and twisting. The following chart compares spandex finish properties for different applications.


Spandex Finish Product General Composition/Properties Typical End Use
Lurol SF-563 Clear type, no-MgSt Covering, CSY, circular knitting
Lurol SF-565 Base lubricant, including a stabilized dispersion of MgSt Covering, CSY, circular knitting or some warp knitting
Lurol SF-567 Complete finish system including stabilized MgSt and a powerful antistat Covering, CSY, circular knitting or warp knitting

Spandex Fiber Lubricants for Friction Control

Whether the emphasis is on low friction at high speeds or ease of removal during fabric preparation, Goulston spandex finishes can meet your performance targets.


Controlling fiber friction against metal and ceramic surfaces is critical for proper tension control in both slow- and high-speed processes. Our elastomeric fiber lubricants use established and emerging technologies to effectively control friction.


Controlling friction of spandex against itself influences package build properties, while consistent friction against companion fibers is necessary for high quality yarns and fabrics.

Controlling Spandex Fiber Unwinding Tension

Efficient spandex fiber processing depends greatly on unwinding tension, especially as the polymer ages. This can be even more critical in fiber processing areas with little or no environmental control.


Goulston uses specialized processing methods and traditional antiblocks to control particle morphology. Both opaque and clear type dispersions are available, depending on the overall finish chemistry.


Although fatty acid metal soaps are still common in the spandex fiber industry, we have also developed other additives to supplement or, in some cases, replace traditional antiblocks.

Antistatic Additives for Spandex Fiber Finishing

High-end fabric production requires excellent static protection during warp beaming to maintain a stable fiber web. Knitting and weaving processes also benefit from eliminating static from the yarn path.


Exceptional static protection was a defining characteristic Goulston’s early spandex finish success and remains a focus of our R&D. Our array of topical antistatic additives addresses all the possible sources of static voltage to eliminate or minimize its unwanted effects.

Spandex Spin Finish Testing and R&D

Laboratory testing is the foundation of technical development. Goulston maintains an extensive analytical and testing lab to develop new materials and evaluate them alongside established lubricant chemistries. Our laboratory can fully characterize spandex fiber properties and determine how to modify the lubricant composition to meet a desired performance target. Goulston custom designed our test equipment to accommodate wide-ranging deniers and fiber tenacities and overcome deficiencies in commercial testing machines.


In addition to our on-site lab, Goulston has access to nearby facilities for pilot scale fiber testing.


Goulston Technologies, Inc.
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