prerecubrimientos

Prerecubrimientos is a term used in some industries to denote preparatory coatings applied before the final coat. It describes a class of layers intended to improve the performance of subsequent finishes by enhancing adhesion, reducing porosity, or improving surface uniformity. The term is not universally standardized and is often used alongside or interchangeably with primer, adhesion promoter, or undercoat.

Types and functions include adhesion promoters that modify surface energy to encourage bonding, corrosion-inhibiting primers that form a protective barrier, and smoothing or barrier layers that reduce roughness or permeability. Common examples are epoxy or polyurethane primers, zinc phosphate or chromate-based treatments, and silane-based primers in various applications. Some prerecubrimientos also incorporate moisture barriers or micro-porosity fillers.

Applications span industries where coatings are used to protect, seal, or decorate surfaces. In construction and architectural painting, prerecubrimientos precede decorative finishes. In automotive and aerospace coating systems, they improve long-term adhesion and corrosion resistance. In electronics and optics, pretreatment layers can serve as adhesion promoters or conformal-coating bases.

Application considerations include selection for compatibility with the topcoat, surface preparation before application, deposition method (spray, dip, brush, or roll), and curing conditions. Environmental and safety concerns, such as volatile organic compounds and waste treatment, influence choice and process controls. The term remains somewhat informal and can vary by manufacturer or region.

See also: primer (coating), surface pretreatment, adhesion promoter, coating system.