What is occlusive dressing made of?

Occlusive dressings are typically made of a thin, flexible plastic film, such as polyethylene or polyurethane, that is coated with a layer of an adhesive or hydrogel. The film is designed to create an airtight seal over the wound, preventing the loss of moisture and protecting it from external contaminants. The specific materials used in the construction of occlusive dressings may vary depending on the manufacturer and the intended application of the dressing.