Sheet for Providing a Barrier

Abstract

A sheet for providing a barrier against the penetration of insects, the sheet comprising at least one insecticide distributed through a plastics material wherein the insecticide is substantially retained in the plastics material.

1 . A sheet for providing a barrier against the penetration of insects, the sheet comprising at least one insecticide distributed through a plastics material wherein the insecticide is substantially retained in the plastics material. 
     
     
         2 . A sheet as claimed in  claim 1 , wherein the sheet is approximately 0.1-1 mm thick. 
     
     
         3 . A sheet as claimed in either  claim 1  or  2 , wherein the plastics material is any synthetic or semi-synthetic compound formed by organic condensational polymerisation. 
     
     
         4 . A sheet as claimed in either  claim 1  or  2 , wherein, the plastics material is any one or a combination of polyamide (nylon), polyethylene, polyvinylchloride, ethyl vinyl acetate, polystyrene, synthetic rubber (eg. neoprene), polymethylmethacrylate (acrylic), polypropylene and polyurethane. 
     
     
         5 . A sheet as claimed in either  claim 1  or  2 , wherein, the plastics material is low density polyethylene. 
     
     
         6 . A sheet as claimed in any of the preceding claims, wherein the plastics material contains a UV stabiliser. 
     
     
         7 . A sheet as claimed in any one of the preceding claims, wherein the plastics material contains a white colouring agent. 
     
     
         8 . A sheet as claimed in any one of the preceding claims, wherein the sheet is substantially impermeable to water. 
     
     
         9 . A sheet as claimed in any of one of the preceding claims, wherein the at least one insecticide is any compound that exhibits sufficient lethal control and/or repellent effects against insects. 
     
     
         10 . A sheet as claimed in any one of  claims 1  to  8 , wherein the at least one insecticide is any one or combination of pyrethrum, synthetic pyrethroids, organo-chlorines, organo-sulfurs, carbamates, organo-phosphates, formamidines, nicotinoids, spinosyns, phenylpyrazoles, pyrroles, pyrazoles, dinitrophenols, pyridazinones, quinazolines, and benzoylureas. 
     
     
         11 . A sheet as claimed in any one of  claims 1  to  8 , wherein the insecticide is bifenthrin. 
     
     
         12 . A sheet as claimed in  claim 11 , wherein the concentration of bifenthrin in the plastic is 0.05 to 1.0 weight %. 
     
     
         13 . A sheet as claimed in  claim 11 , wherein the concentration of bifentrin in the plastic is approximately 0.1 weight %. 
     
     
         14 . A method of protecting a building against the penetration of insects into the building, the method comprising the step of positioning one or more sheets of a plastics material above the footings of the building, wherein the plastics material contains at least one insecticide distributed therethrough. 
     
     
         15 . A method as claimed in  claim 14 , wherein the step of positioning the sheets of plastics material further involves positioning the sheets around the perimeter of the building at least extending between an outer wall of the building and an inner frame of the building. 
     
     
         16 . A method as claimed in either  claim 14  or  15 , wherein the sheets of plastics material comprise sheets as claimed in any one of  claims 1  to  13 . 
     
     
         17 . A sheet for providing a barrier against the penetration of insects, the sheet enabled to be positioned around the perimeter of a building at least extending between an outer wall of the building and an inner frame of the building, the sheet comprising at least one wherein the insecticide is substantially retained in the plastics material.