| 摘要 |
<p>An article having a decorative visual surface appearance provided by a plastics composition which comprises a transparent or translucent plastics material having a colourant dispersed therein is characterised in that the colourant comprises a blend of discrete polymer particles substantially all of which have a minimum dimension in the range 5 to 100 micron and a maximum dimension of no more than 10 mm, said particles being of a natural or synthetic organic polymer or a glass, the blend comprising particles of at least two distinct colours and/or shapes, and the plastics composition containing 0.1 to 8 percent by weight of the blend of polymer particles based on the weight of the plastics composition. The article can be made by a method which includes the steps of mixing together the blend and the plastics material or a precursor thereof and forming the article under conditions whereby the polymer particles in the colourant are not deformed to any substantial extent. The coloured particles may be provided in a colour concentrate homogeneously mixed with a polymer or precursor thereof or a wax. The articles may be moulded, cast, extruded, calendered or reinforced plastics articles, for example floor coverings.</p> |
