| 摘要 |
A foam layer (6) for forming a tubular resilient body (2) of a foam spring (1), the foam layer (6) having areas (16) with slits (17) alternating with areas (18) without slits (17), whereby, after having made a tubular body (2) out of the foam layer (6), said slits (17) form holes (3) in the tubular body (2) and said areas (16) with slits (17) form a limited part (16) of the tubular body (2) displaying holes (3) and said areas (18) without slits (17) form a limited part (18) of the tubular body (2) that is not provided with holes (3). |
