Co-extrusion SPC foam flooring and manufacturing method thereof
US12415344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2024 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | May 7, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/035
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A foam flooring includes a stone-plastic base material structure, which sequentially comprises, from top to bottom, a first stable layer, a foaming layer and a second stable layer. The first stable layer and the second stable layer are both sheets with a PVC resin and filler powder as main components, with 25-40 parts by mass of the PVC resin and 55-75 parts by mass of the filler powder; and the density of the SPC foam flooring is 1.4-1.6 g/cm3. The foaming layer is arranged between the two stable layers, such that the overall density of the flooring is significantly reduced and reaches 1.4-1.6 g/m3; since the foaming layer is arranged inside, the surface strength of the overall flooring is not influenced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.