PRESS RELEASE: Metal Manufacturers: Make the Most of Your Dip Tank Paint!

Manufacturers of metal parts and equipment need to find ways to make their mass production a efficient as possible while still delivering the level of quality that the end user desires. When it comes to painting each part, that means finding the right protective coating for metal with the most efficient method of application. Cortec® offers the following suggestions for making the most of Cortec’s Micro-Corrosion Inhibiting Coatings™ in the context of a dip tank application.

dip tank

Benefits of a Dip Tank

In large scale manufacturing operations, dip tanks often have the advantage of more efficient and uniform coating applications. Cortec® Technical Service Manager, Rick Shannon, who has several decades of experience in coatings and related industries, recently shared the following key benefits of setting up a dip tank:

1. Dip tanks are highly efficient with minimal waste; dip lines can be set up for excess paint to drip back into the tank.
2. Dip tanks can provide complete coverage for geometries that are difficult for spray applications to cover in a uniform manner.
3. Parts that have a lot of open space (e.g., screens) are often coated using dip tanks. Spraying this type of product would be highly inefficient and would generate a lot of waste.

Dip Tank Maintenance Best Practices

However, simply having a dip tank is not the end all of efficient coatings application. For manufacturers to make the most of their dip tank, it is necessary to regularly monitor the tank to make sure the coating does not go bad. Shannon recommended creating a chart with the follow in items to be checked daily, weekly, or monthly.

• Viscosity (check daily, at minimum)
• pH (for water-based systems, check daily)
• Solids (check monthly)

The chart should also note the size of the tank, any additions made to the tank, and the date each physical property was checked or new paint was added. Shannon notes that these are only general suggestions, and if manufacturers notice that they are going through a large volume of coating because of high production levels, they may want to increase monitoring frequency. “By keeping track of the physical properties in your tank on a regular basis there will be less chance [that] the tank goes bad and you have to scrap the material and start over,” Shannon explained.

Cortec® Coatings Benefits

One advantage of using a Cortec® Coating in a dip tank is that Cortec® offers a variety of water-based, corrosion inhibiting options that can be matched to most custom colors. Depending on the coating choice, these water-based paints can reduce VOC levels and eliminate unpleasant solvent-based paint odors, creating a more worker-friendly environment. Of special note for manufacturers, EcoShield® 386 FD is a great option for fast-paced lines with force-dry applications that need good hot-hardness. Better yet, it contains only 0.04 lbs/gal (5 g/L) of VOCs.

Get Started with Your Dip Tank Application!

Manufacturers need to think of many different things, not least of which is finding the right coating and application method to paint their metal components. Using Cortec® Coatings in a dip tank application and following the recommended dip tank maintenance procedures is a great way to get the protective benefits of a Cortec® Coating while making the most efficient use of the product in certain situations. Contact Cortec® for help selecting a protective coating for metal and setting up a efficient dip tank application.

Keywords: dip tank best practices, metal manufacturers, best practices for metal manufacturers, Cortec Coatings, coatings for metal, how to apply paint efficiently, dip tank maintenance, water-based paints, worker friendly coatings, anti-rust coatings 

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Case History Spotlight #616: Refrigerator Coil Dip Tank

December 29, 2023

Due to the strong solvent smell, hazards, and inadequate corrosion protection of the solvent-based paint they were using, a refrigerator coil manufacturer decided to switch to VpCI®-386. They kept this water-based paint in their dip tank, circulating the product to keep it mixed and covering the tank when not dipping the coils. As a result, the manufacturer was able to reduce their VOCs while also achieving superior corrosion protection.

Refrigerator Coil Dip Tank protected with VpCI®-386

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Keywords: Cortec, Case History Spotlight, refrigerator coils, dip tank maintenance, replacing solvent-based paint, water-based coatings for metal, water-based corrosion inhibitor coatings, corrosion protection, how to improve worker environments, reduce VOC

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NEWS ALERT: VpCI®-372 Peelable Coating Protects Against Rust and Scratches

December 29, 2023

Do you ever wish you could apply corrosion protection to a metal surface for just a few days, weeks, or months and peel it off when the protection was no longer needed? Cortec® helps you do that with VpCI®-372 peelable coating.

VpCI®-372 Peelable Coating

VpCI®-372 is a water-based corrosion inhibiting coating that can be applied directly to metal for protection in sheltered conditions. It also serves as a light barrier against physical abrasion. At the end of the protection period, VpCI®-372 can be peeled off by hand and discarded as solid waste, revealing the protected surface below. It offers excellent UV resistance and can be matched to some custom colors. VpCI®-372 has a low VOC of 0.2 lbs/gal (24 g/L) and can be applied by spray, dip, brush, or roll.

The special characteristics of VpCI®-372 allow it to have a variety of creative uses. Some ideas are as follows:

  • Temporary protection of metal parts during shipment
  • Storage of aluminum boats and other large equipment
  • Masking of parts during large painting jobs
  • Protection of non-porous surfaces (e.g., windows and doors) from scratches and nicks on the construction site

An extra thick version, VpCI®-372E, is available for use on dynamic profiles such as splines, threads, or machined areas.

If you have a metal surface that needs temporary protection against corrosion and abrasion, and you want to be able to remove that protection at any time, consider using VpCI®-372 for the job. Contact Cortec® for more information and to discuss your specific temporary rust prevention needs.

Keywords: peelable coating, coatings for metal, anti-rust coating, anti-scratch coating, Cortec, Cortec Coatings, shipping metal parts, equipment storage, masking film for construction site, peel-off paint for metal

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PRESS RELEASE: Get Ready to Paint Your Industrial Floors, Railings, and Stairs

Are you getting ready to paint a new industrial facility for the first time or touch up an aging plant? Cortec® Corp. shares several coatings ideas for protecting concrete and metal surfaces inside your buildings.

industrial coatings

Protecting Concrete Floors

When painting concrete floors, it is important to have a coating that will stand up to both traffic and any chemicals that might be used in the facility. In many cases, MCI®-2026 Floor Coating is an excellent choice as a 100% solids, 2-component novolac epoxy coating with a high degree of chemical and abrasion resistance. The coating is rated to hold up very well against a variety of acids, solvents, alkalis, salts, and even some miscellaneous food items such as peanut butter and fruit/vegetable juices. MCI®-2026 Floor Coating can be used in areas with strict VOC limits and meets all of the USDA/FDA guidelines for use in federally inspected facilities.

Protecting Structural Steel

Metal walkways, railings, and stairways inside industrial facilities often need some extra corrosion protection— especially in a high moisture processing environment. Cortec® suggests the following direct to metal (DTM) corrosion inhibiting coatings:


• CorrVerter® Rust Converter Primer
CorrVerter® is a low VOC water-based rust converting primer that can be used on previously rusted surfaces where sandblasting or grinding is not a good
option. When properly applied, it passivates the surface rust and protects against further rusting. It dries black and can be coated with a water-based or solvent-based topcoat.

• Water-Based 2K Epoxy Primer
VpCI®-395 is an excellent primer for many metal surfaces, serving as a strong base for topcoats. As a two-component (2K) system, it offers the inherent durability advantages of cross-linking alongside the worker advantages of a water-based, low VOC coating. It can also be used as its own topcoat indoors, away from UV light.

• Solvent-Based One-Coat System
VpCI®-396 is another primer option that may be preferred by workers who want to avoid the hassle of mixing a 2K system. It is a fast-drying solvent-based moisture cure urethane and can be matched to a variety of custom colors if desired for a topcoat.

• Water-Based Acrylic Topcoat
VpCI®-395 and VpCI®-396 can each be top-coated with EcoShield® VpCI®-386, one of Cortec’s top performing water-based acrylic Micro-Corrosion Inhibiting Coatings™ that can be applied clear or matched to many custom colors.

Choosing a Color Scheme

While most factories are not rated for their beauty, choosing a paint color scheme for metal surfaces can still be important, creating a clean, uniform, or even cheerful environment. Sometimes safety colors are needed to identify a trip hazard or other danger area. In other cases, color-coding may be needed to identify different types of valves or piping. Often, Cortec® can adjust its protective coating tints accordingly with its color-matching services.

Get Help from Cortec® Coatings

Next time you need to apply a fresh coat of paint to concrete or metal inside your plant, make your selection based on the features and benefits your facility and workers need most. Contact Cortec® for further help with coatings selection and color matching.

Keywords: paint for concrete floors, coating metal stairs, coating metal railings, corrosion inhibiting coatings, protective coatings for metal, concrete floor coating, Cortec color matching, chemical resistant coating, Cortec, VpCI

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NEWS ALERT: How to Avoid Coating Adhesion Problems on Specialty Substrates

You’ve coated your metal surface with a Cortec® direct-to-metal (DTM) coating. You relax in the confidence of good corrosion protection. Then, a few weeks later, you see the coating peeling off, compromising the protection you thought you had. What went wrong? The problem may be poor adhesion on a specialty metal substrate. The solution? Start with VpCI®-373 Wash Primer.

coating adhesion problems

Adhesion Challenges on Specialty Substrates

While most Cortec® Coatings can be applied DTM on carbon steel surfaces, some metals such as aluminum, galvanized steel, stainless steel, and other plated surfaces are difficult for most paints and coatings to adhere to. If adhesion fails, the coating fails, making proper surface prep vital. Common methods for improving adhesion on galvanized steel include acid etching or the use of lead/zinc/chromate primers. Chromate pretreatment and/or conversion coatings can be used on unpainted aluminum. However, Cortec® prefers the worker-friendliness of applying a water-based wash primer.

Water-Based Corrosion Inhibiting Wash Primer

VpCI®-373 is a fast drying, water-based acrylic wash primer that provides phenomenal adhesion on tough-to-adhere-to surfaces including aluminum, galvanized steel, and stainless steel. It offers multi-metal protection with a complex mixture of corrosion inhibitors, making it a competitive alternative to industrial grade solvent borne systems and/or those with heavy metals. VpCI®-373 should be applied at 0.5-1.0 mils (12.5-25.0 µm) DFT, allowed to cure for 72 hours, and sanded before applying a topcoat of choice.

Make Your Coating ‘Stick’ to Metal!

Next time you paint a specialty metal substrate, make sure you get the coating to “stick” by applying a base primer of VpCI®-373 for good adhesion. Contact Cortec® for further support when painting galvanized steel and aluminum surfaces.

Keywords: coating adhesion problems, coating adhesion on aluminum, coating adhesion on galvanized steel, direct to metal coatings, corrosion protection, acid etching alternative, chromate primer alternative, chromate pretreatment alternative, wash primer, Cortec

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CASE HISTORY SPOTLIGHT #336: Architectural Coatings for Plastics Plant

Architectural CoatingsThe owner of a manufacturing plant in Europe needed protective coatings with customized colors on both interior and exterior details. Desirable traits included cost effectiveness, ease of application, and environmental responsibility.

Silos, light poles, and the floor were cleaned with a solution of VpCI®-414 Cleaner/Degreaser. From there, silos were coated with VpCI®-386 Green, galvanized light poles were coated with VpCI®-373 and VpCI®-386 Green, and the floor was coated with MCI®-2026 Concrete Primer and MCI®-2026 Floor Coating. The extrusion line was coated with Cortec’s water-based coating technology prior to shipment from Italy. Color coding was used in certain areas as warnings against heat exposure or slippage on stairs. The system provided a variety of water-based or low VOC options with precautions against safety hazards and corrosion on metal surfaces.

To read the full case history, please log in to our case history website: http://www.corteccasehistories.com/

Keywords: Cortec, Case History Spotlight, architectural coatings, Cortec Coatings, corrosion, floor coating, concrete primer, coatings for manufacturers, protective coatings, water-based coatings

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NEWS ALERT: Tired of Sandblasting Your Rusty Fence?

Metal fences often get rusty over time, especially in harsh winter climates or seaside environments. Instead of repeatedly sandblasting the rust off, workers can opt for the Cortec® alternative of passivating the rust with CorrVerter® Rust Converter Primer.

rusty fence

Sandblasting Challenges

While sandblasting effectively removes rust, the process requires special equipment, can be a worker hazard, and is not allowed in some environments. In addition, a freshly blasted metal surface is a magnet for flash rust, potentially starting a vicious cycle of sandblasting over and over again if the metal fence is not properly treated or painted quickly enough.

CorrVerter® Rust Converter

If sandblasting is not preferred, workers can instead grab a wire brush and a pot of CorrVerter® Rust Converter Primer to get started reclaiming a rusty fence. CorrVerter® is a water-based primer with a low VOC of 0.1 lbs/gallon (12 g/L). It combines chelating agents with a high solids waterborne latex that has extremely low water vapor permeability. This chemistry converts surface rust to a hydrophobic passive layer and deters re-rusting. CorrVerter® changes from white to dark brown/black as it cures and can be top-coated with both waterbased and solvent-based paints.

How to Paint a Rusty Fence

Painters who opt to use CorrVerter® on their rusty fence should first brush off loose rust, rinse the fence and allow it to dry, then apply a 3.0-5.0 mil (75-125 µm) DFT (dry film thickness) coat directly over the remaining tight rust. If desired, a second coating of CorrVerter® can be applied after 20 minutes. For best results, this should be left to dry 24-72 hours and then top-coated with either a water-based or solvent-based permanent coating, such as EcoShield® VpCI®-386 (water-based) or VpCI®-384 (2K solvent-based urethane). Both the primer and coatings can be applied by spray or brush

Sandblasting – Not the Only Option

If your facility has a rusty fence that needs to be fixed up, remember that sandblasting is not the only option. With CorrVerter®, facilities can paint directly over the rusty surface without using special equipment or worrying about blasting hazards. Contact Cortec® to learn about painting your rusty fence.

Keywords: sandblasting rusty fence, how to paint a rusty fence, how to passivate rust, rust converter, rust primer, flash rust on metal, alternatives to sandblasting, Cortec, Cortec Coatings, maintenance tips

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CASE HISTORY SPOTLIGHT: Case History #336: Architectural Coatings for Plastics Plant

Architectural Coatings

The owner of a manufacturing plant in Europe needed protective coatings with customized colors on both interior and exterior details. Desirable traits included cost effectiveness, ease of application, and environmental responsibility.

Silos, light poles, and the floor were cleaned with a solution of VpCI®-414 Cleaner/Degreaser. From there, silos were coated with VpCI®-386 Green, galvanized light poles were coated with VpCI®-373 and VpCI®-386 Green, and the floor was coated with MCI®-2026 Concrete Primer and MCI®-2026 Floor Coating. The extrusion line was coated with Cortec’s water-based coating technology prior to shipment from Italy. Color coding was used in certain areas as warnings against heat exposure or slippage on stairs. The system provided a variety of water-based or low VOC options with precautions against safety hazards and corrosion on metal surfaces.

To read the full case history, please log in to our case history website: http://www.corteccasehistories.com/

Keywords: Cortec, Case History Spotlight, architectural coatings, Cortec Coatings, corrosion, floor coating, concrete primer, coatings for manufacturers, protective coatings, water-based coatings

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