| 摘要 |
<p>The kit has a female type closure unit (240) comprising a gorge (242), with converging edges, connected to a rod (244) which is perpendicular to main surfaces of a support flapper (220). The rod has an extended sole (246) provided at an end opposite to the gorge, where the sole is totally surrounded by the support flapper and is situated in a cavity that is formed in the thickness of the support flapper. The support flapper and the associated closure unit are co-extruded in thermoplastic materials.</p> |
