Wall lining

Abstract

A flexible wall lining includes a body layer ( 1 ) comprising one or more phase change materials ( 4 ) that each exhibit a phase change at a temperature in the range from 5° to 40° C. The wall lining preferably is provided in the form of a sheet that can be attached to a building wall ( 5 ) either at the time of construction or, advantageously, at a time when the building is being renovated or redecorated.

1 . A flexible wall lining comprising at least one phase change material, each of said at least one phase change material exhibiting a phase change at a temperature in the range from 5° to 40° C.  
     
     
         2 . The wall lining of  claim 1  wherein the wall lining is in the form of a sheet, said sheet optionally comprising on one primary side thereof an adhesive layer for securing said sheet to a wall.  
     
     
         3 . The wall lining of any of claims  1  and  2  wherein the phase change is endothermic with increasing temperature and exothermic with decreasing temperature.  
     
     
         4 . The wall lining of any of  claims 1  to  3  wherein said at least one phase change material is in the form of particles.  
     
     
         5 . The wall lining of  claim 4  wherein said particles have diameters of from 10 to 120 μm.  
     
     
         6 . The wall lining of any of claims  4  and  5  wherein each of said particles is encapsulated with an impermeable coating, said coating optionally being flexible.  
     
     
         7 . The wall lining of any of  claims 4  to  6  wherein said particles are at least one of embedded in a layer of the wall lining and adhered to an absorbent layer of the wall lining.  
     
     
         8 . The wall lining of any preceding claim wherein the wall lining comprises from 30 to 60% by volume of said at least one phase change material.  
     
     
         9 . The wall lining of any preceding claim wherein said at least one phase change materials is hydrated below the temperature at which it exhibits the phase change.  
     
     
         10 . The wall lining of any preceding claim wherein said at least one phase change materials is a blend of at least two such materials, the temperatures at which each exhibits a phase change differing by at least 1° C.