Artificial turf made of ground
    7.
    发明专利

    公开(公告)号:JP5341401B2

    公开(公告)日:2013-11-13

    申请号:JP2008146620

    申请日:2008-06-04

    Abstract: PROBLEM TO BE SOLVED: To provide an artificial lawn ground which has an impact absorptivity required for competitions such as sports and which does not have a tendency to cause the dispersion of impact absorptivity even if used over a long period. SOLUTION: A granular layer placed between the lawn threads of an artificial lawn comprises three layers: an upper layer of an elastic granular body; an intermediate layer formed by mixing an elastic granular body and a hard granular body; and a lower layer of an elastic granular body. The intermediate layer disposed on the lower side of the upper layer of the elastic granular body layer is formed of a mixture comprising the elastic granular body and the hard granular body, a difference in impact absorptivity between the upper layer and the intermediate layer is reduced, and even if the thickness of the upper layer is varied from place to place, the dispersion of the impact absorbing performance is hard to occur. Since the elastic granular body is formed on the upper and lower sides of the intermediate layer formed of a mixture comprising the elastic granular body and the hard granular body, even if a part of the hard granular body of the intermediate layer is moved in the granular body layer during the use, the layer of only the hard granular layer is not formed since the elastic granular body layer is taken into the elastic granular body layers of the upper layer and the lower layer. Consequently, a large variation of the impact absorptivity is not provided to the artificial lawn ground. COPYRIGHT: (C)2010,JPO&INPIT

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