| 摘要 |
A stratified-structure laminar covering material, which can be used for example as a flooring for sports facilities, comprises an outermost layer (101), a bottom layer (103), and an intermediate layer (102) set between the outermost layer (101) and the bottom layer (103). The aforesaid layers (101, 102 and 103) comprise a matrix constituted by a mixture of polyolefin and thermoplastic elastomer (TPE), the matrix being substantially identical for all three layers. The matrix of the outermost layer (101) is substantially free from fillers and has a first value of density. The bottom layer (103) contains fillers so as to have a second value of density greater than said first value of density, and the intermediate layer (102) contains fillers so as to have a third value of density intermediate between the first value of density of the outermost layer (101) and the second value of density of the bottom layer (103). |
