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US 9,938,399 B2Granted
Weld seam for ground coating
AssigneeTarkett Inc.
InventorsPierre Bastin, Richard Peres, Nicolas Roelly
Life of this patent
Estimating the term…
Abstract
The invention relates to a heat-fusible weld seam for joining ground coating members, comprising a copolymer selected from the group of polymers containing acrylic acid, methacrylic acid or maleic anhydride, a polyethylene and a copolyamide.
Claims8
A hot-melt welding rod, for joining together elements of a floor covering, containing the following resins:
- from 12.5% to 25% by weight of at least one copolymer selected from the group consisting of acrylic acid-based, methacrylic acid-based and maleic anhydride-based copolymers,
- from 60% to 72.5% by weight of two polyethylene resins, one of which is a polyethylene wax having a Brookfield viscosity of less than 10000 cPoise (centipoise) at 140° C.,
- 15% by weight of a copolyamide, wherein the copolyamide is the condensation product of a dimer of fatty acids with an aliphatic diamine, and wherein the amine index of the copolyamide is higher than its acid value.
Dependencies are inferred from the claim text.