Natural ice rink mould

Claim 1

A mould for forming an ice skating surface, said mould when used once, being thereafter destroyed, said mould having a bottom and top comprising: a pair of sheets of polyethylene having a thickness in the range of 0.001 to 0.005 inches of substantially similar shape, the peripheral edges thereof being either integral, or sealed to one another, to form a water-tight enclosure, one of said sheets being water-tight and being the bottom of said mould, and being thin and highly flexible to conform closely to the shape of an irregular surface; the other of said sheets being the top of said mould and being provided with an unsealed water inlet aperture for the free, unhindered entry into, and exit from, the mould of water and including a plurality of further apertures to permit the escape of entrapped air as the mould is being filled with water; thereby to provide a fillable mould having a bottom surface conforming to the contour of the surface upon which the mould rests, and an upper mould surface defined by the inside face of the top; the mould being destroyed by tearing off the top sheet after the mould has been filled with water and then frozen, the torn top sheet thereafter being removed in order to leave a moulded exposed, substantially uniform and flat ice skating surface.