Flame retardant tufted carpet tile and method of preparing same

USRE34951E · kind E · reissue

Assignee

• Interface, Inc. · US

Inventors

• David K. Slosberg · Atlanta, US
• Gilbert S. Nowell · Marietta, US

Key dates

• Filing date: Dec 1, 1992
• Grant date: May 23, 1995
• Expiry date: Dec 1, 2012

Classification

• Technology area (CPC —): General

Abstract

A flame-resistant carpet tile having low smoke values and improved flame resistance which carpet tile comprises a primary backing having a fibrous face and a fibrous back, a barrier layer adjacent to fibrous back to an acrylic polymer heavily loaded with a metallic flame-retardant salt filler material which acrylic polymer is compatible with a vinyl chloride polymer layer and a relatively thick vinyl chloride polymer backing layer adhering to the barrier layer. The method of preparing a flame-resistant carpet tile which comprises pre-coating the back of a carpet with an acrylic polymer latex containing a metallic salt flame-retardant filler material, coating the latex material with a PVC layer, thereafter laying the latex PVC coated carpet into the top surface of a liquid PVC backing layer, heating the laid-in carpet to fuse the PVC layers, cooling the carpet and cutting the carpet into carpet tile.