Pneumatic tire, a tread band, and a tread block comprising a sipe, and a lamella plate for the manufacture thereof

A lamella plate suitable for manufacturing a pneumatic tire, a tread band, or a tread block, the lamella plate being configured to form a sipe in the tread block of the pneumatic tire or the tread band, the lamella plate comprising:

• a bottom surface;
• a top surface located apart from the bottom surface in a direction of height of the lamella plate;
• and
• a first side wall and a second side wall curved in a lengthwise direction of the lamella plate, the lengthwise direction being perpendicular to the height and a cross-section of the lamella plate with a plane that has a surface normal that is parallel to the height of the lamella plate and is disposed at a height from the bottom surface forming a curved line,
• wherein, at all heights within a range from a surface height to a first transition height of at least 0.3 mm, as measured from the bottom surface of the lamella plate, the curved line comprises at least one deflection point having an inner corner that has a radius of curvature under 0.3 mm, and
• at all heights from a second transition height to the bottom surface of the lamella plate, the curved line comprises a bending point that has an inner rounded corner, a radius of curvature of the inner rounded corner being at least 0.3 mm, the second transition height being greater than the first transition height.