Types of Resins for Coated Inversion Liners

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    A coated inversion liner allows your crew to rehabilitate damaged sewers and other types of pipes. The liner forms a cohesive bond with the host pipe, essentially creating a pipe within a pipe. A key part of the liner is the resin, which hardens and creates a waterproof surface.

    Let’s take a look at the types of resins available at Masterliner for use in CIPP liners.

    Polyester Resin

    In a standard inversion liner installation, most coated inversion liners use polyester resin. The curing time ranges from less than one hour to a few hours. We recommend this resin for large municipal projects, commercial and industrial sewer rehabilitation, as well as residential sewer restorations. Once prepared, the resin remains stable for 24 hours. It cures with hot air or steam.

    Vinyl Resin

    When extreme corrosion resistance is needed, we recommend vinyl resin with your CIPP liner. Vinyl resin is a hybrid of polyester and epoxy. It confers additional resistance to acidic, alkaline and oxidizing chemicals, making it ideal for use in industrial and municipal sewer systems and pipes. It also cures rapidly with steam or hot air.

    Epoxy Resin

    Epoxy resin must be mixed on the job site and poured onto the liner after your crew completes the inversion lining process. The tricky timing of epoxy resin means that your crew needs experience with the mixing and application process. The two-part epoxy resins cure quickly, allowing for rapid restoration of service to the pipe.

    Each type of resin has its place in inversion CIPP liners. If you’re unsure of which resin is best suited to a particular project for a client, our team at Masterliner is always available for product guidance and support.

    To learn more about our resins and inversion liners, reach out to us today. We’ll answer all your questions!

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