Layer pad
A layer pad ( 10 ) comprises a substantially flat sheet ( 12 ) having first and second opposite substantially planar faces ( 14, 16 ). The layer pad ( 10 ) further includes at least one raised formation ( 18 ) on at least one of the faces ( 14, 16 ).
1. A pad comprising a substantially flat sheet having first and second opposite substantially planar faces, wherein the pad further includes a plurality of raised formations on each of the faces, each raised formation being conical or frustoconical in shape, and each raised formation having a main region extending from the first or second face, and each raised formation having an apex region spaced from the respective first or second face, wherein the thickness of the pad between the apex regions is about 30% thicker than regions of the pad devoid of the aforesaid raised formations.
2. A pad according to claim 1 , wherein each apex region is substantially planar, and the main region of the, or each, raised formation tapers inwardly from the face to the apex region.
3. A pad according to claim 1 , wherein a plurality of rows of the raised formations are provided on the, or each, face, and the raised formations on the first face are aligned with the raised formations on the second face.
4. A pad according to claim 1 , wherein the sheet is substantially rectangular, and the pad has marginal portions on the sheet, the marginal portions extending around the sheet.
5. A pad according to claim 4 , wherein the sheet has corner regions, the marginal portions extending around the corner regions.
6. A pad according to claim 5 , wherein the marginal portions are curved around the corner regions.
7. A pad according to claim 4 , wherein the marginal portions have outer edges, and the marginal portions comprise corrugations extending perpendicularly from the outer edges, the corrugations merging into the sheet.