R. D. Werner Co., Inc. became a leader in plastics extrusion during the World War II restrictions on civilian metal usage.

In 1997, the company restructured, and sold a majority holding to the international investment group Investcorp S.A.[citation needed] In December 2005, the Extruded Products Division (formerly WXP, Inc.) was sold to HIG Capital.

[2] Werner reported audited net sales of $472.3 million for the year ending Dec. 31, 2005.

[3] Werner Co. filed for Chapter 11 protection under the bankruptcy code in Delaware on June 12, 2006, primarily due to excessive leverage, significant increases in raw material costs, and the loss of one of its largest customers.

[citation needed] Werner Co. operates as an international subsidiary of New Werner Holding Co., Inc. with manufacturing, warehousing, sales, and distribution facilities in the United States, Australia, Canada, China, Mexico, Vietnam and the United Kingdom.