| 摘要 |
Sealing layer (1) consisting of a heat-meltable bituminous material, coated with a non-stick film (4) deposited beforehand on that face of this layer to be applied locally to a support (2), through a succession of zones distributed in the surface of this layer, characterised in that it comprises a plurality of adhesive bodies (17) arranged under the layer at separate points where the film is raised beforehand to a temperature suitable for destroying it or absorbing it within the layer. <IMAGE>
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