| 摘要 |
<p>The box is formed by folding a cardboard sheet (1) made up of a base or bottom to which four panels are attached, each comprising two flaps, one internal (3) or (12) and the other external (4) or (10). Leakage is prevented by a waterproof bag (14) of a synthetic material slipped over the box and folded back on itself to fit in the space formed between the internal and external flaps. After the litter in the box has been used, the external flaps are folded towards the centre of the box and the bag is placed around it.</p> |
