Flexible polyurethane foam, its production method and material system for its production
AssigneeAsahi Glass Company, Limited
InventorsYoshinori Toyota, Hiroshi Wada, Etsuko Akagi
Life of this patent
Estimating the term…
Abstract
A flexible polyurethane foam, wherein in a load (N)-deflection (mm) loop obtained by a load test of the flexible polyurethane foam, the X value as calculated from the formula (1) is at most 4.2: X=(static spring constant at a load of 883N)/(static spring constant at a load of 98N) (1)
Claims14
A flexible polyurethane foam, wherein in a load (N)-deflection (mm) loop obtained by a load test of the flexible polyurethane foam, the X value as calculated from the formula (1) is at most 4.2:
- X=(static spring constant at a load of 883N)/(static spring constant at a load of 98N) (1)
A flexible polyurethane foam, wherein in a load (N)-deflection (mm) loop obtained by a load test of a core portion of the flexible polyurethane foam, the Y value as calculated from the formula (2) is at most 1.8:
- Y=(static spring constant at a load of 127.4N)/(static spring constant at a load of 19.6N) (2)
Dependencies are inferred from the claim text.