| 摘要 |
The invention concerns a method for making synthetic tiles for floor covering, characterised in that it consists in casting in a moulding tray (4) a polyurethane resin having a Shore A hardness ranging between 70 and 85, said resin consisting of two basic constituents, namely polyol and isocyanate in a weight proportion of 100 parts of polyol for 25 parts of isocyanate, and six additives expressed below in a weight percentage relative to the total weight of the two basic constituents: 30 to 50 % of a silica filler providing a wear-resistant structure; 15 to 25 % of pyrogenated brick providing pigmentation; 5 to 10 % of plasticizer; 1 to 3 % of an anti-UV agent; 1 to 3 % of an antioxidant; and 0.2 to 0.5 % of an accelerating catalyst.
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