Methyl tin stabilizers, such as methyl tin mercaptide, are widely recognized as the gold standard for clear rigid PVC. They offer excellent compatibility, low migration, and minimal impact on haze. The key to maximizing performance lies in dosage control and proper lubricant system pairing.
In rigid PVC sheet and extrusion, over-stabilization can actually hurt transparency by causing plate-out, while under-stabilization leads to early discoloration during long production runs. Working with a stabilizer supplier who understands your specific formulation β including internal/external lubricant balance β is critical.
Unistars Customization Service: Since 2018, we have helped dozens of customers optimize their stabilizer packages. Our lab analyzes your application and recommends the exact XY-series or XT-series formulation, reducing raw material costs while improving product quality. Read more about our product range.