Anti-skid, wear- and stress-resisting road marking tape material

Abstract

An improved multi-layer surface marking tape material for use on roadway pavements so as to provide a traffic regulating indicium thereon, and having an anti-skid and wear-resisting upper layer and a lower primer layer for connecting the material to said pavement, the new multi-layer tape material comprising further an intermediate relatively thin, pliable, essentially inextensible and tensionally resistant intermediate layer compatible with and intimately connected to both said layers for distributing and transferring over a large primer layer-roadway pavement interfacial area horizontally directed stresses tangentially applied to said anti-skid upper layer at localized upper layer-vehicle wheel treads interfacial areas. .Iadd.

I claim: .[. 
     
       1. A road marking tape material comprising: a bituminous primer layer firmly attachable to a road surface; a wear- and skid-resistant upper layer having partially protruding particles of a substance having a hardness of at least 6 on the Mohs' Hardness Scale embedded therein; and an impregnant-saturated layer intermediate said primer and upper layers, said impregnant-saturated layer being completely permeated with an impregnant and additionally being partially permeated by the composition of said primer layer and by the composition forming said upper layer, said intermediate layer being a non-woven fibrous material having an unimpregnated condition a weight of about 75 g/m 2  and a tension-resistance of at least 10 kg/cm, said impregnant-saturated layer having a weight of about 160 g/m 2  and said impregnant having approximately the following composition (parts by weight).].   ______________________________________                                    
.[.nitrile rubber                                                         
                 100                                                      
epoxy resin      100                                                      
zinc oxide       5                                                        
stearic acid     1                                                        
sulfur           3.5                                                      
an accelerator for                                                        
                 1.5                                                      
the expoxy resin                                                          
titanium dioxide 7.5..].                                                  
______________________________________                                    
  .[.2. A road-marking tape material as defined in claim 1, said impregnant
 being soluble in a methylethylketone peroxide-toluene solvent, and said
 layer having a tension resistance of about 20 kg/cm..]. .[.3. A
 road-marking tape material, comprising a wear- and skid-resistant upper
 layer consisting predominantly of a synthetic resin composition having
 partially protruding particles of a substance having a hardness of at
 least 6 on the Mohs' Hardness Scale embedded therein; a primer layer
 firmly attachable to a road surface and consisting predominantly of a
 bituminous composition; an impregnable intermediate layer sandwiched
 between said upper and primer layers and forming an interface with each of
 the same, said intermediate layer being a non-woven fibrous material; and
 an impregnant composition impregnating said intermediate layer, said
 impregnant composition containing a rubbery component and being intermixed
 with said synthetic resin composition adjacent the interface of said upper
 layer and said intermediate layer and also being intermixed with said
 bituminous composition adjacent the interface of said primer layer and
 said intermediate layer..]. .Iadd. 4. A road-marking tape material,
 comprising a wear and skid resistant upper layer consisting predominantly
 of a synthetic resin composition having partially protruding particles of
 a substance having a hardness of at least 6 on the Mohs' Hardness Scale
 embedded therein; a primer layer firmly attachable to the road surface; an
 impregnated intermediate layer of highly tension resistant resin non-woven
 fibrous material sandwiched between said upper layer and primer layer and
 forming an interface with each of the same; and an impregnant resin
 composition impregnating said intermediate layer, said impregnant
 composition being intermixed with said synthetic resin composition
 adjacent the interface of said upper layer and said intermediate layer and
 also being intermixed with the composition of the primer layer adjacent
 the interface of said primer layer and said intermediate layer.
 .Iaddend..Iadd. 5. A road-marking tape material as defined in claim 4, the
 fibrous non-woven layer being impregnated in its portions adjacent to the
 upper and to the primer layer by compounds present in said layers.
 .Iaddend..Iadd. 6. A road-marking tape material as defined in claim 4, the
 fibrous non-woven material being impregnated by bituminous compounds.
 .Iaddend..Iadd. 7. A road-marking tape material as defined in claim 4, the
 fibrous non-woven material being impregnated by epoxy-bituminous
 compounds. .Iaddend..Iadd. 8. A road-marking tape material, comprising a
 wear and skid resistant upper layer consisting predominantly of a
 synthetic resin composition having partially protruding particles of a
 substance having a hardness of at least 6 on the Mohs' Hardness Scale
 embedded therein; a primer layer firmly attachable to the road surface, an
 impregnated first intermediate layer of highly tension resistant resin
 non-woven fibrous material sandwiched between said upper layer and a
 second intermediate layer, and an impregnant resinous composition
 impregnating said first intermediate layer, said impregnant composition
 being intermixed with said synthetic resin composition adjacent the
 interface of said upper layer and said impregnated intermediate layer and
 also being intermixed with the chemical composition of the second
 intermediate layer adjacent the interface of said impregnated first
 intermediate layer and said second intermediate layer; the second
 intermediate layer being sandwiched between said impregnated first
 intermediate layer and said primer layer, the chemical composition of said
 second intermediate layer being intermixed with said impregnant resinous
 composition impregnating said first intermediate layer and also being
 intermixed with the composition of the primer layer. .Iaddend..Iadd. 9. A
 road-marking tape material, comprising a wear and skid resistant upper
 layer consisting predominantly of a synthetic resin composition having
 partially protruding particles of a substance having a hardness of at
 least 6 on the Mohs' Hardness Scale embedded therein; a primer layer
 firmly attachable to the road surface; a first intermediate layer
 sandwiched between said upper layer and a second impregnated intermediate
 layer of highly tension resistant resin non-woven fibrous material, the
 chemical composition of said first intermediate layer being intermixed
 with the synthetic resin composition of the upper layer and said second
 impregnated intermediate layer, the second impregnated intermediate layer
 of highly tension resistant resin non-woven fibrous material being
 sandwiched between said first intermediate layer and said primer layer and
 forming an interface with each of the same, and an impregnant resin
 composition impregnating said second intermediate layer, said impregnant
 composition being intermixed with the chemical composition of said first
 intermediate layer adjacent the interface of said first intermediate layer
 and the second impregnated intermediate layer of highly tension resistant
 resin non-woven fibrous material and also being intermixed with the
 composition of the primer layer adjacent the interface of said second
 impregnated intermediate layer and said primer layer. .Iaddend.