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STEEL DRUM INDUSTRY NEWS, TRENDS AND ISSUES

Why We Offer Both "lined" And "unlined" Steel Drums

August 7th, 2007 by Dean Ricker

Filed under: Safety

As a child, you probably heard your mother telling you not to buy a food can that was dented. She was right! In order to protect food from coming into contact with metal, food cans used to be coated internally with a phenolic lining. This lining was brittle and if the can was dented, it was likely that the interior lining had cracked. Today, linings offer the chemical protection of the phenolic plus they are mixed with the flexible properties of epoxy. Together, these epoxy/phenolic coatings are chemically resistant and able to adhere to a surface when it is damaged. While the epoxy/phenolic is a sprayed-on and cured coating (like paint) a passive rust inhibitor is applied to all our carbon steel drums in order to remove surface oil prior to painting. The rust inhibitor is much like the final rinse at a carwash, it is a light clear spray that is neither visible or measurable once it is applied. The purpose of the rust inhibitor is to prevent flash rust on uncoated carbon steel. If a customer needs an epoxy/phenolic lined drum for chemical or long-term rust resistance, then an unlined drum will not suffice. Please contact me, or your sales representative, if you have questions about our lining options.

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14 Responses

  1. Brett Ritchey says:

    What is the heat tolerance for epoxy phenolic lining, and what occurs above the tolerance temperature?

    Thanks, Brett

  2. Brett,

    After checking with our lining manufacturer, they informed me that the upper tolerance for the epoxy phenolic lining would be about 550 F, at which point the coating would become brittle.

    Let me know if you have any further questions.

    Keep reading the Skolnik blog!

    Howard Skolnik

  3. What is the best lining option for toluene/1-pentanol solution?

    Thank you
    Irwan

  4. Dear Irwan,
    Thank you for visiting the Skolnik blog and posting your question. While we do offer drums with protective epoxy/phenolic linings, we cannot recommend product compatibility with each lining.

    In this situation, what I suggest, is that I have have our lining manufacturer contact you to set up a Compatibility Test Series. The Series would involve accelerated testing of samples of your product in different lining sample cups. With most products, conclusive test results are available within 30 days. If you would like to proceed with such testing, please contact me at: 773.735.0700 x 1500.

    Thank you,
    Howard Skolnik

  5. Rolf says:

    Will the epoxy phenolic or 100% phenolic lining degrade in water at ~200F? Or.. will the epoxy phenolic or 100% phenolic linings leech into the water? Are the drums suitable for food use? Thanks

  6. Hello Rolf,
    Thanks for presenting such an interesting question. I really don’t have an answer for your question, although I would refer to you our lining supplier for an answer. Call me at 773.884.1500 and I will give you his contact information. Yes, the drums are suitable for food use. Thank you, Howard Skolnik

  7. Marty Stevens says:

    If I’m going to use the barrel to hold fuel, does a lining matter?

  8. Hello Mary,
    Thanks for posting your question. First of all, fuel is a hazardous material and if you choose to put it in a drum, please make sure that you choose a drum that is compliant with the hazardous properties of the contents, especially if you are transporting the drum over a public right of way. However, there are containers made for fuel storage that might be more appropriate for your usage. You can check with your local fire department for some direction on these options. With regard to a lining, because of the aggressive nature of fuel, I would anticipate any epoxy or phenolic lining would fail after a short period of contact. Thank you, Howard Skolnik

  9. Kelly says:

    Are phenolic linings the compatible with samples containing acid?

  10. JT says:

    I bought a drum from you recently with the epoxy phenolic liner that I intend to convert to a smoker. I don’t anticipate ever cooking anything at over 400 degrees, mostly low & slow, 225 degrees. I know it is supposed to be safe for food but Is it safe for cooking bbq? Does this liner need to be removed prior to smoking on it? Thanks!

  11. Hello, I must apologize for the delayed response. Thank you for purchasing a drum from Skolnik. Having the interior lined will not effect your smoker environment. The liner is similar to a high temperature paint and all the ingredients in the liner are food safe. After some use, the liner may begin to peel due to heat exposure. Just wire brush the peelings to prevent them from dropping onto your food. Hope you have many great tasting bbq’s!

  12. Hello, please accept my apology for the delayed response. Lining compatibility can only be determined by performing an accelerated test sampling.
    However, I don’t believe that our phenolic coatings would be sufficient to hold acid. Acid is better suited in one of our stainless steel drums.
    Hope this is helpful.

  13. Sunder says:

    Hi howard,
    What is the difference between Water Based epoxy Paintsand regular grade epoxyies? If so, wat is the baking temperature for both of them. Would be glad if you could throw some light !
    Regards

  14. Hi,
    Water based epoxy linings contain far less solvents than most regular “solvent” epoxy linings, and are more common nowadays due to lower amounts of Volatile Organic Compounds (VOCs). These coatings are just as, or more effective, than their solvent based counterparts. They are also safer for employees and the environment, and high quality water based linings even out perform solvent based epoxy linings.
    Baking temperature is different depending on lining manufacturers but our water based linings cure between 375 and 400 F.

    Please let me know of any questions.

    Thank you,
    Howard

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