Floor or wall covering panel with rigid composite core layer
US11428016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2019 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Apr 9, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F2201/043
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A floor or wall covering panel has a top and a bottom surface, and at least four sides, where a first and a second side include a first and a second connection profile, respectively, the first profile being configured for mechanically engaging and interlocking with the second profile of another panel, the first profile including a tongue protruding beyond the top edge of the first side, where the second profile includes a groove recessed with respect to the top edge of the second side, the groove is delimited at its bottom by a base, the panel is of laminar structure including a rigid core layer and a wear layer arranged on the core layer, where the core layer includes a first and a second sublayer of a first and a second composite material, respectively, the second sublayer being arranged atop the first sublayer, where both composite materials comprise thermoplastic material and filler material but are of different formulations, and the base delimiting the groove bottom is realized essentially within the first core sublayer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.