US Patent No. 10,336,035


Patent No. 10,336,035
Issue Date July 02, 2019
Title Polyurethane Based Rigid Flooring Laminate
Inventorship Robert G. Pierson, Akron, OH (US)
Henry C. Ashton, Aurora, OH (US)
Robert L. Gray, Hudson, OH (US)
Gilles Le Du, Akron, OH (US)
Assignee SCHNELLER LLC, Kent, OH (US)

Claim of US Patent No. 10,336,035

1. A laminate structure comprising:a backing layer comprising a fiber reinforcement with a thermoset or thermoplastic polymer resin matrix;
a base layer comprising an alloy layer made of polyurethane in combination with a terpolymer comprising polyamide, polyester and polyether or a combination thereof; and
an adhesive layer disposed on a first surface of the base layer between the backing layer and the base layer; and
a cap layer comprising polyurethane, wherein the peel resistance between the combination of the cap layer and base layer and the backing layer is at least about 103 Newtons (N) per 25 millimeters after aging for at least 500 hours, wherein the laminate meets the toxicity flaming and non-flaming test protocols pursuant to AITM 2.0007 with respect to HCN, CO, NO2, SO2/H2S, HF, and HCl limits, said limits being less than 150, 1000, 100, 100, 100, and 150 respectively as measured by specific optical density, in addition to Federal Aviation Regulation 25.853 MD with regard to the parameters of vertical burn, drip time and char of the laminate, said limits being less than 15 seconds, 5 seconds and 203 mm respectively, and further having a tear strength of greater than 50 Newtons according to ISO 4674, method A, and an areal density of between 1800 and 2100 grams per square meter.