Continuously peelable coextruded polymer film with long-term UV stability

摘要

The multilayered polymer film is configured such that a continuous constituent layer packet can be delaminated in the form of a continuous sheet from the remainder of the film. These films are compatible with known coextrusion manufacturing techniques and can be made without having an adhesive layer between layer packets that are individually releasably tailored from the film. Alternatively, a combination of polymer compositions can be used to combine non-adhesive polymer layers such that irreversible delamination of these films is likely to occur at the interface between layer packet pairs. Some polymer layers, including at least one embedded layer, may include UV stabilizers, such as UV absorbers, antioxidants, or hindered amine light stabilizers (HALS), and these layers are included in each layer packet. May be positioned at the front of the. After the UV stabilization layer of one packet is used, the packet can be peeled off to expose a new UV stabilization layer of the next layer packet.