Waterproof composite dressings are designed with four specialized layers, making them suitable for use as either primary or secondary wound coverings.
- Layer 1: A non-adherent contact surface that safeguards the wound and prevents adhesion to granulating tissue.
- Layer 2: A soft, absorbent pad that manages exudate while providing cushioning for added comfort.
- Layer 3: A nonwoven backing integrated with an adhesive border to ensure secure placement on the skin.
- Layer 4: A semi-occlusive, waterproof polyurethane film that acts as a barrier against external contaminants and supports a moist healing environment.
