Preform mold component

A component of a mold for molding preforms made of thermoplastic material, wherein said component is configured to mold an outer surface of a neck of a preform and comprises:

• a first part and a second part each having a respective molding surface adapted to mold part of the outer surface of the neck of the preform,
• wherein when the first part and the second part are assembled to each other, a first surface of the first part and a second surface of the second part face each other and are spaced apart from each other, the entire first surface and the entire second surface thus delimiting a first passage for gases or vapors to leave the mold;
• wherein the whole first surface and the whole second surface are provided with laser-induced periodic surface structures (LIPSSs);
• wherein the first part comprises a third surface and the second part comprises a fourth surface;
• wherein, when the first part and the second part are assembled to each other, said third surface and said fourth surface face each other and are spaced apart from each other, the entire third surface and the entire fourth surface thus delimiting a second passage for gases or vapors to leave the mold;
• wherein the whole third surface and the whole fourth surface are provided with laser-induced periodic surface structures (LIPSSs);
• wherein the first surface, the second surface, the third surface and the fourth surface define an entire parting surface between the first part and the second part of said component;
• wherein a height of said laser-induced periodic structures is in a range from 100 to 500 nm;
• and
• wherein a period between said laser-induced periodic structures is less than 1000 nm.