3M™ Extreme Masking Tapes for Anodizing
Anodization baths are some of the toughest environments around and we make extreme masking tapes tough enough to stand up to them.
Unlike paint which bonds to metal surfaces but remains a separate coating, anodization converts the surface to provide a durable, corrosion-resistant oxide finish that is both part of the metal itself but also different from it. The finish is achieved by applying an electric current while dipping parts in an acid bath — so any section that shouldn’t be treated needs a tough masking tape for anodizing that can withstand this process.
Benefits of Anodization
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Hard, abrasion-resistant surfaces will not peel or crack.
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Electrically insulates the underlying metal.
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Avoids thickness of painting and plating processes.
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Colour can be embedded for decorative purposes.
The Three Common Anodizing Processes
Chromic Acid Anodizing toggle
“Regular” Sulfuric Acid Anodizing toggle
“Hardcoat” Sulfuric Acid Anodizing toggle
Related Applications
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Electroplating
Use electricity to deposit a layer of any desired metal on another substrate in order to change the surface properties or to build up part thickness. Your masking tape must withstand the immersive solution without leaking but should also remove easily and cleanly with no or minimal residue requiring further attention.
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Powder Coating
Use electrical attraction to apply free-flowing dry powder to a part which then passes through an oven that melts the powder to form an even paint surface. The masking tape must be able to prevent powder from reaching masked areas while withstanding the high oven heat without transferring to the part completely.
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