The production of 2-ply window film involves laminating two polyester layers to create a more durable product than single-ply versions. A basic 2-ply film structure consists of a scratch-resistant coating and two polyester layers and an adhesive and a removable backing liner. The film maintains its clear appearance in its basic form. The placement of a dyed or metallised layer between two polyester sheets enables the addition of colour, solar control, and privacy features to the film.

The main benefit of 2-ply construction exists in its protective capabilities. The polyester layers protect the dye or metallised coating from sunlight exposure and cleaning chemicals and general environmental wear. The film benefits from an extended lifespan because its dual-layer structure protects it from degradation and maintains its performance. The film thickness reaches between 38 and 50 microns because of its dual-layer structure which provides better handling during installation and improved resistance to tears and creases.

 The main applications of 2-ply films occur in residential and commercial settings for solar control and glare reduction and privacy and safety film installations. The additional thickness of this film provides a premium touch while delivering superior durability to windows that need frequent cleaning and movement.

The automotive industry uses single-ply window tint for car windows because it provides better heat-shrinkability during installation. The heat-shrinking process for car window tinting requires single-ply films because they can be shaped easily when heated. The thin material structure enables better moldability which explains why 1-ply tint remains the preferred choice for automotive glass applications. 

Most flat-glass applications require 2-ply window film because it provides superior quality performance. The combination of enhanced durability, longer service life, and superior functionality makes 2-ply window film the preferred choice for buildings that require dependable solar control and privacy solutions, as well as decorative finishes.