Look for "High-Elongation" or "Stretch" inks that can expand without cracking. 2. Check Your Curing Capabilities
Plastisol sits on top of the fabric rather than soaking in, so choosing the right chemical formulation for your substrate is critical to prevent cracking or "bleeding".
Plastisol only dries (cures) when it reaches a specific temperature—usually between —throughout the entire ink film. Plastisol Ink Screen Printing Guide - Keygadgets
You must buy "Low-Bleed" or "Poly" inks. Polyester dyes can "migrate" into the ink when heated; low-bleed inks contain blockers to prevent your white prints from turning pink on a red shirt.
