pva

5 лет назад

This video explains the purpose and application of PVA primer, a sealant used on new drywall. The speaker describes how PVA primer seals the porous surface of drywall and spackle, preventing paint from showing unevenness and requiring multiple coats. The video emphasizes the importance of using PVA primer for a smooth, uniform finish with just one coat of paint.

5 лет назад

This video demonstrates how to make PVA solutions using a Silverson high-speed, high-shear mixer. The process involves dispersing PVA powder into hot water, which significantly reduces processing time compared to traditional methods. The video highlights the benefits of using a Silverson mixer for various concentrations and batch sizes, from laboratory to bulk production.