Artificial Lawn, in Particular an Artificial Grass Sports Field

Abstract

The invention relates to an artificial lawn, in particular an artificial grass sports field, comprising a substrate to which artificial grass fibres provided with additives are attached, which additives undergo a color change in response to an external stimulus. The object of the invention is to provide an artificial lawn as referred to in the introductory paragraph which is capable of displaying a range of colors in a simpler and more effective manner. According to the invention, the artificial grass fibres provided with an additive are attached to the substrate in the form of various groups of artificial grass fibres, each provided with a specific additive, wherein each specific additive of a group of artificial grass fibres undergoes a color change in response to a specific external stimulus. In this way a more versatile artificial lawn is realized, which can be used for various applications, and wherein a new group of artificial grass fibres can be activated to effect the color change each time by using a different, specific external stimulus.

1 . An artificial lawn, in particular an artificial grass sports field, comprising a substrate to which artificial grass fibers provided with additives are attached, which additives undergo a color change in response to an external stimulus, wherein the artificial grass fibers provided with an additive are attached to the substrate in the form of various groups of artificial grass fibers, each group provided with a specific additive, wherein each specific additive of a group of artificial grass fibers undergoes a color change in response to a specific external stimulus. 
     
     
         2 . The artificial lawn according to  claim 1 , wherein each group of artificial grass fibers provided with a specific additive is arranged on the substrate in a specific pattern. 
     
     
         3 . An The artificial lawn according to  claim 1 , wherein said specific pattern corresponds to the pattern of lines of a specific sport to be practiced on the artificial lawn. 
     
     
         4 . The artificial lawn according to  claim 1 , wherein the color change is reversible. 
     
     
         5 . The artificial lawn according to  claim 1 , wherein the additives undergo the color change under the influence of a mechanical load. 
     
     
         6 . The artificial lawn according to  claim 1 , wherein the additives undergo the color change under the influence of a thermal load. 
     
     
         7 . The artificial lawn according to  claim 1 , wherein the additives undergo the color change under the influence of light. 
     
     
         8 . The artificial lawn according to  claim 1 , wherein the additives undergo the color change under the influence of a changing angle of incidence of the light. 
     
     
         9 . The artificial lawn according to  claim 1 , wherein the additives are at least partially externally applied to the artificial grass fibers. 
     
     
         10 . The artificial lawn according to  claim 1 , wherein the additives are at least partially incorporated in the artificial grass fibers. 
     
     
         11 . The artificial lawn according to  claim 1 , wherein said additives comprise a pigment. 
     
     
         12 . The artificial lawn according to  claim 1 , wherein said additives comprise a thermochromic pigment. 
     
     
         13 . The artificial lawn according to  claim 1 , wherein said additives comprise a fluorescent pigment. 
     
     
         14 . The artificial lawn according to  claim 1 , wherein said additives comprise a phosphorescent pigment. 
     
     
         15 . The artificial lawn according to  claim 1 , wherein said additives comprise a pearlescent pigment. 
     
     
         16 . The artificial lawn according to  claim 1 , wherein said additives comprise a pH-sensitive pigment. 
     
     
         17 . The artificial lawn according to  claim 1 , wherein said additives comprise an electrochromic pigment. 
     
     
         18 . An artificial grass fiber provided with an additive wherein said additive undergoes a color change in response to a specific external stimulus. 
     
     
         19 . The artificial grass fiber of  claim 18  wherein the specific external stimulus is selected from the group consisting of a mechanical stimulus, heat, and light. 
     
     
         20 . The artificial grass fiber of  claim 18  wherein the additive is a pigment selected from the group consisting of a thermochromic pigment, a fluorescent pigment, a phosphorescent pigment, a pearlescent pigment, a pH-sensitive pigment, and an electrochromic pigment.