Polyethylene Resin: How Resin Testing Led to Chemical Storage Innovation

Ten years ago, the availability of commercial grade cross-linked polyethylene for chemical storage tanks was limited to a small number of sources. The limited supply, as well as a wide variation in quality, made reliably finding quality resin a challenge. To control manufacturing quality and create a steady supply source, Poly Processing led the charge in developing a robust, high-density cross-linked polyethylene for use in large storage vessels.

The XLPE Development Story

The quest to develop an industry-leading high-density cross-linked polyethylene resin began in 2003. In conjunction with the Pennsylvania College of Technology, the process consisted of development of a variety of resins, as well as both short-term and long-term testing.

Once a number of resin compound variations were developed, they were subjected to impact, hoop stress, environmental stress crack, tensile, along with a variety of other tests in the lab. This lab work revealed resin compounds that were ready for testing in the field.

In order to get an idea of how these new resins would perform in real-world scenarios, we manufactured test tanks with the new resin compounds. Numerous resin variations were field-tested over several years with fertilizer applications in agriculture. In these tests, the tanks were not only required to successfully contain the chemical being stored, they were also subjected to the demands of frequent movement.

In addition, distributors also tested and monitored performance of tanks in controlled storage situations with various chemical applications to verify the longevity and performance of the tank.

Resin Testing and Development Delivers Superior Value  

The result of this extensive testing and development is a high-density cross-linked polyethylene resin custom-tailored for large, thick-walled chemical storage tanks. It’s a robust, long-lasting material that meets tight quality specifications. Full-scale commercial production of the superior XLPE resin compound tanks began in 2009.

Here's a look at the structure and benefits of our polyethylene resin.

Today, Poly Processing defines the quality testing specs for the compounder. Parallel testing where both Poly Processing and the compounder conduct resin tests is performed to maintain quality.

Before Poly Processing puts any resin into the manufacturing process, the compounder first submits their test results. This ensures an independent third party stamp of approval meeting the highest quality standards.

Every tank that Poly Processing manufactures is tested. This assures quality that meets or exceeds industry standards. Poly Processing’s commitment to testing and innovation consistently delivers a safe, long-lasting chemical storage tank.

For more information about Poly Processing’s tank testing process, please contact a chemical storage system specialist.

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Topics: Value Added