Is white latex adhesive waterproof? How is the waterproof performance of your white latex adhesive? Can your white latex adhesive pass a boiling water test? Customers often ask us these questions, because the process requirements of some factories do demand certain waterproof performance from white latex adhesive. So, I will share with you the waterproof performance of white latex adhesive for woodworking and printing packaging.

The English abbreviation for ordinary water-based white latex adhesive is PVAc, which stands for polyvinyl acetate emulsion adhesive. Ordinary white latex adhesive is formed through the polymerization reaction of an emulsion. After drying, it forms a film that still contains PVA components. Because PVA is readily soluble in water, the water resistance of white latex adhesive is actually ordinary.

The water resistance of traditional white latex adhesive is average. However, white latex adhesive with D3 level performance has waterproof components added to the raw material formulation, which can appropriately improve its water resistance. Traditional white latex adhesive can be placed in water for 1-2 hours without problems, but achieving complete waterproofing is actually very difficult to achieve. Similarly, for some splicing applications using white latex adhesive, customers can mix the splicing white latex adhesive with a curing agent (chemical name: isocyanate) in a 100:15 ratio before splicing. Through the reaction between the adhesive and the curing agent, its water resistance can be further improved. Normally, the finished product can withstand boiling in water for 8 hours without the glue line opening. However, if soaked further, the panel itself may not be able to withstand it. This situation can only improve water resistance, but there is still a gap to achieve complete waterproof performance.