CIPP Lining System: What You Need To Know

June 23, 2020 / By Barry Delbert

If you are running a cured-in-place (CIPP) rehabilitation project, you know you can choose from a wide range of lining materials. There are numerous solutions in the market that are designed to meet the unique needs of customers. This may include the need to prolong the life of sewer pipes without necessarily digging the ground or disrupting local communities.

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Introduced in half a century ago, conventional lining materials have been in use across the world to rehabilitate sewer pipes. The proven history of prolonging sewer line life using quality felt liners has led to continued evolution of CIPP liners for use beyond the mainlines. A key advancement resulting from this evolution is the creation of various CIPP felt liner solutions that are also used to reline lateral pipes.

If you are looking to buy a lining system, here is what you need to know before you settle on a liner:

1. Variables That Affect Liner Choice
Before you decide on the liner to use in your project, there are several variables you'll need to consider. These include external temperatures based on the season and the geographic location where you will be using the liners.

To ensure that you pick the right liner for your project, consider talking to a liner manufacturer to design a customized solution. CIPP lining system companies like MaxLiner USA would be willing to work with you to establish the product or a mix of products that would fit your unique installation.

2. Systems to Be Used in Liner Installation
CIPP installation systems that are available in the market vary. System owners or contractors that want to install the systems by themselves need to consider several factors before they install their liners.

Such factors include location and availability of wet-out facilities as well as capacity of equipment that will be used to install the liners. Contractors should also consider the availability of quality resin - they need to evaluate this and other materials before determining the type of liner to install.

3. Systems That Will Be Used in Liner Installation
CIPP installation systems that are available in the market vary. System owners or contractors that want to install the systems by themselves need to consider several factors before they install their liners.

Such factors include location and availability of wet-out facilities as well as capacity of equipment that will be used to install the liners. Contractors should also consider the availability of quality resin, as they need to evaluate this and other materials, before determining the type of liner to install.

4. Available Options
When buying a CIPP lining system, it is important to know the various options of finished liners that manufacturers have available. Often, you will find varying options in the market based on the quality of materials used to make them and the manufacturing process.

For instance, you'll need to consider the different options of liners available when buying polymer coating that you will need if you are installing a resin system. You'll also need to choose the method of closing the liner. The two closing options you will need to consider are the sewn and flame-bonded methods.

If you are looking for modern methods, consider high frequency options like welded overlap seams that can be used in blind shot liners and pull-in-place applications.

5. Manufacturer's Quality Control and Assurance
The liner manufacturing process should include testing the liners for stress in every step. Manufacturers need to have a quality control and assurance program that enables them to guarantee product quality. This involves continually checking various aspects including liner thickness, density, fiber distribution, evenness, weldability and strength.

The quality control and assurance process should also enable manufacturers to ensure the liners have no pinholes, by checking coating uniformity, weight and mass distribution. The liners must undergo testing for density at different pressures, coating distribution, tensile strength among others.

Finally, once the final product is ready, samples should be tested for accuracy in density, circumference, length, weld strengths and coating integrity.

Final Thoughts
Purchase of lining systems is an important responsibility that should be taken seriously. When rehabilitating pipes with CIPP lining systems, you want to reduce time, cost and the disruption the project would have on people. To ensure this, you need to look for a liner system manufacturer that meets the five points discussed above. The best way to do this is to visit different manufacturing plants to understand the procedure they use to make their liners. If the process is right, you will be guaranteed of getting a quality lining system. The opposite is also true – a poor manufacturing process means the product will be faulty.


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barry delbertGuest Blogger: Barry Delbert as a business consultant for manufacturing companies, Barry Delbert is responsible for organizing business projects according to the clients’ requirements, and analyze data to understand his clients’ strengths and weaknesses in the business.

During his free time, Barry loves to publish articles online about the different facets of manufacturing businesses.

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