| 摘要 |
<p>A process for manufacturing a continuous strip of self-sealing product having very low hardness, being very elastic and highly tacky, said strip being intended for feeding a converting machine, during which a thermoplastic protective film is deposited on the surface of the strip, and comprising the steps during which: a strip of self-sealing product P is extruded to a first cross section (S0), at the outlet of the extrusion die (10), the strip is surrounded over its entire perimeter using a thermoplastic film (20) by welding the film to itself, after having deposited the film (20) around the strip, the strip is calendered in order to bring it down to a second cross section (S2), smaller than the first cross section.</p> |
