Custom basket designs have several surface finish options available to improve the performance of the basket.  There are finishes to improve the corrosion resistance of the base material.  And there are a range of coatings available to protect the parts from scratches.  Below is a very broad overview of design characteristics for some of the finishes and coatings we typically use in our custom baskets.

  • Surface Finishes for Custom Baskets Common processes used for baskets, many other options available:
    • Natural Finish Baskets: Baskets have the natural condition of the base material with no additional processing.  The baskets are generally clean to the touch but may have a very small amount of residue from the manufacturing process and there may be some discoloration around welds.  Natural finish baskets are entirely appropriate for most industrial manufacturing applications.  Natural finish Carbon steel baskets are suitable for solvent cleaning, oil dipping and indoor material handling applications.   Stainless Steel baskets with a natural finish are still corrosion resistant.
    • Electropolishing, Electropolished Baskets: (Stainless Steel Baskets only) Stainless Steel baskets are dipped into a tank of acid and an electrical charge passes thru the baskets to drive off all the free iron and other impurities from the top layer of material, leaving the surface very rich in nickel and chrome. The resulting surface is very smooth and hard, and very shiny. Electropolishing further improves the corrosion resistance of stainless steel baskets.  Electropolishing is recommended for any ultrasonic cleaning applications.
    • Passivation, Passivated Baskets: (Stainless Steel Baskets only) Passivation is very similar to electropolishing, stainless baskets are dipped into a tank of acid but no electrical charge is used.  Passivation is less aggressive at removing impurities than electropolishing and is rarely used as as surface finish for stainless steel baskets.
    • Other Surface Finishes: Electroplating with zinc,  nickel or chrome adds some corrosion protection to carbon steel baskets.  We make high volume zinc plated tote baskets but for most custom baskets      Stainless Steel only) Passivation is very similar to electropolishing, stainless baskets are dipped into a tank of acid but no electrical charge is used.  Passivation is less aggressive at removing impurities than electropolishing and is rarely used as as surface finish for stainless steel baskets

     

  • Surface Coatings applied Over Base Materials: Whenever custom baskets need to hold parts with polished or delicate surfaces, we protect the parts by using various coatings to “soften” the surfaces of the stainless steel baskets. We never recommend powder coating a mild steel basket hoping the coating will protect the basket from rust.  At some point, the coating will develop a pinhole or small scratch exposing the mild steel which will rust very quickly and blister off the surrounding coating.  We only recommend powder coating stainless steel baskets.
    • Nylon 11 Powder Coating: Nylon is an extremely versatile coating for parts washing baskets.  Nylon 11 creates a soft surface to protect parts while still having good abrasion resistance.  Nylon has good resistance to Salt water, Hydrocarbons, Solvents, Acids, Salts, and Alkalis.  Nylon 11 coated wire baskets can withstand working temperatures up to 250 degrees Fahrenheit.  Typically, we use Black Nylon 11 for our custom baskets, but other colors are available.
    • Snap-on UHMW Rod Covers: In custom baskets that need to hold parts with sharp corners or baskets with high wear areas, we use snap on UHMW to cover the critical basket rods.  The UHMW Snap up covers are thicker and softer than powder coating and are very easily replaced if they wear through.  UHMW is not as chemical resistant as Nylon, and should not be subjected to sustained temperatures above 180 degrees Fahrenheit.
    • Other Powder Coating materials: Several other powder coatings are commonly used on custom stainless steel baskets for more extreme applications
      • Halar Powder Coating: Halar coating is actually the brand name for ethylene chlorotrifluoroethylene, or ECTFE. It has high impact strength, it is resistant to concentrated chemicals, and has a wide working temperature range (-105 degrees Fahrenheit to 300 degrees Fahrenheit).  Halar is “better” than Nylon 11 for industrial baskets, but powder coating baskets with Halar is much more expensive than powder coating baskets with Nylon 11.  We only recommend Halar coating stainless steel baskets for extreme applications.
      • Plastisol Dip Coating: Plastisol is applied to baskets by a dipping process that coats surfaces with a thick very soft vinyl coating.  A wide variety of colors are available. In general, vinyl coatings have limited chemical, heat or abrasion resistance.  Industrial baskets only get Plastisol coatings to improve the grip of handles, for process identification or cosmetic reasons only.