Skin-adhesive item

A skin-adhesive item comprising:

• a support S which is a flexible polyurethane film having a top face S1 and a bottom face S2,
• at least one tie primer C1 applied to at least one part or to all of the top face S1 of the support S,
• at least one layer D1 comprising a silicone gel E obtained by crosslinking a crosslinkable silicone composition Y by means of a hydrosilylation reaction, which has been applied to the at least one tie primer C1 facing the support S, and
• optionally at least one protective layer F comprising of a peel-off protective material and applied to the at least one layer D1,
• wherein the at least one tie primer C1 comprises a silicone elastomer which is not a silicone gel and which is obtained by crosslinking a silicone composition X comprising:
• 1) at least one organopolysiloxane A comprising, per molecule, at least two vinyl radicals each bonded to a silicon atom and comprising:
• (i) at least two siloxy units of formula (A1):
• YaZbSiO(4−(a+b)/2 (A1)
• wherein:
• Y represents a C2 to C6 alkenyl group,
• Z represents a monovalent hydrocarbon-based group chosen from alkyl groups having from 1 to 8 carbon atoms inclusive, cycloalkyl groups, and aryl groups,
• a and b represent integers, a being 1, 2 or 3, b being 0, 1 or 2 and (a+b) being 1, 2 or 3;
• (ii) and optionally comprising other siloxy units of formula (A2):
• ZcSiO(4−c)/2 (A2)
• wherein:
• Z has the same meaning as above, and
• c represents an integer which is 0, 1, 2 or 3;
• 2) at least one organopolysiloxane B comprising, per molecule, at least three hydrogen atoms each bonded to a silicon atom and comprising:
• (i) at least three siloxy units of formula (B1):
• HZbSiO(3−b)/2 (B1)
• wherein:
• H is a hydrogen atom,
• Z represents a monovalent hydrocarbon-based group chosen from alkyl groups having from 1 to 8 carbon atoms inclusive, cycloalkyl groups, and aryl groups,
• b is 0, 1 or 2;
• (ii) and optionally comprising other siloxy units of formula (B2):
• ZcSiO(4−c)/2 (B2)
• wherein:
• Z has the same meaning as above, and
• c represents an integer which is 0, 1, 2, or 3;
• 3) at least one hydrosilylation catalyst C;
• 4) at least one hydrosilylation reaction inhibitor D;
• 5) optionally at least one stabilizing additive K;
• and
• 6) optionally at least one silicone resin M which has hydroxyl groups and is free of alkenyl or hydrosilyl SiH groups, and
• with the proviso that the amounts by weight of the organopolysiloxanes A and B are determined such that the RHalk=nH/tAlk ratio is 1.00≤RHalk≤4.5 with:
• nH=number of moles of hydrogen atom directly bonded to a silicon atom of the organopolysiloxane B, and
• tAlk=number of moles of alkenyl directly bonded to a silicon atom of the organopolysiloxane A.