| 摘要 |
A sponge for cleaning motor-vehicles includes a thick slab (4) of sponge material which is backed by a laminate (3) that includes a water-impervious plastics sheet (6). The sheet (6) is sandwiched between a fabric sheet (5) forming the upper surface (1) of the sponge, and a thin layer (7) of plastics foam that is bonded to the foam slab (4). The sheet (6) is holed, being punctured with holes (8) through the fabric sheet (5), to enable water to pass to a restricted extent from the foam slab (4) to the fabric sheet (5). The distribution of the holes (8) in the sheet (6) may vary from region to region of the sponge. |
