| 摘要 |
<p>Paper towel (1) has three layers (2,3,4), two outer layers (3,4) with inner layer (2). Outer layers are embossed (6) with raised (7) and hollow (8) areas and inner layer is printed (5). Layers are partially transparent and adhered by tinted glue (9) applied to raised areas (7) which also provides change in appearance of color of print beneath.</p> |
