Continuous Plating
About Hoop Plating
Hoop plating is a process involving continuous high-speed plating on long strips.
Metal materials curled up in a roll or processed workpieces wrapped in a reel undergo pre-treatment and plating process continuously while being extracted, then wrapped again to complete the process. This is also called reel-to-reel plating or continuous plating.
Advantages of hoop plating
Stable quality at a reasonable price
Compared to plating on workpieces after pressing, hoop plating has high productivity enabling consistent operation from pre-treatment, undercoat plating, finishing plating and post-treatment. Unevenness in plating thickness is very little, allowing for stable quality.
Better flexibility in part design
Long objects can be wound up in the pre-treatment (pressing, etc.) and inserted into the production line as a whole. Carrying out plating on strip and board materials beforehand allows for improved flexibility in part design such as layout design in pressing.
Partial plating with flexible design
Hoop plating features the ability to combine various processes with equipment design. Partial plating is possible in the areas of your choice with patterns such as stripes, spots and single surfaces by applying tape-masking in the process.
Mass Production Line
In our continuous plating line, the whole plating process and various pre and post treatments neccecary are done with great consistancy..
Available Plating Specs
Available Plating Specs
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| Base material | Finishing | Undercoat | Thickness[㎜] | Width[㎜] | ||
| Plating | Max thickness[μm] | Plating | Max thickness[μm] | |||
| Cu (Pure copper, Phosphor bronze, Brass or other alloy) |
Sn | 10 | Ni | 1.5 | 0.05～1 | 10~200 |
| Sn Reflow | 10 | Cu | 0.5 | 0.1～0.8 | 10~100 | |
| Ni | 1.5 | |||||
| Ni | 2 | - | 0.05～１ | 7~102 | ||
| Ag | 5 | Cu | 1 | 0.08～0.8 | 10~160 | |
| Ni | 0.7 | |||||
| Stainless (SUS304 or others) Iron-nickel alloy(42alloy) |
Sn | 10 | Ni | 2 | 0.05~1.0 | 8~102 |
| Sn Reflow | 10 | Cu | 0.5 | 0.1～0.8※1 | 10~100 | |
| Ni | 1.5 | |||||
| Ni | 2 | - | 0.044~1 | 10~102 | ||
| Ag | 5 | Cu | 1 | 0.044~0.5 | 10~160 | |
| Ni | 0.7 | |||||
| Al (A1000,A3000, A5000,A6000) |
Sn | 5 | Ni | 2 | 0.05~2.3 | 10~250 |
| Ni | 4 | - | ||||
Possible slitting size
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| Material | Plating | Width[㎜] | Thickness[㎜] | Slit width[㎜] | Slitted rolls number |
| Cu Stainess steel Iron-nickel alloy(42alloy) |
Sn | 10～150 | 0.05～0.5 | 8.5～75 | 10 |
| Ag | 10～150 | ||||
| Ni | 10～102 | ||||
| Al | Ni | 10～250 | 0.1~2.3 | 10～240 | 20 |
| Sn |
Plating onto pressed material
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| Finishing | Undercoat | Thickness[㎜] | Width[㎜] | |||
| Base material | Plating | Max thickness[μm] | Plating | Max thickness[μm] | ||
| Cu (Pure copper, Phosphor bronze, Brass or other alloy) |
Sn | 10 | Ni | 5 | 0.08~0.8 | 5~50 |
| Sn Reflow | 10 | Cu | 0.5 | 0.1~0.8※1 | 10~100 | |
| Ni | 1.5 | |||||
| Ag※2 | 10 | Cu | 0.5 | 0.1~0.8 | 9~75 | |
| Sn-Bi | 5 | Ni | 5 | 0.1~1.0 | 5~50 | |
| Stainless steel(SUS304) | Sn※3 | 10 | Ni | 2.5 | 0.1~0.25 | 10~50 |
※2 Tolerance for Leadframe: Plating side: 0.8±0.1㎜ Guide hole minimum pitch: 3㎜
※3 Tolerance for SUS: Level: Demand specs±1.0㎜ Resist: Demand specs±0.5㎜
Partial Plating
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| Finishing | Undercoat | Type | Plating area | ||||
| Bright | Semi-bright | Matte | Overall | Stripe | Partial | ||
| Sn | Ni or Cu | 〇 | 〇 | 〇 | 〇 | 〇 | |
| Sn-Bi | Ni | 〇 | 〇 | ||||
| Au | Ni | 〇 | 〇 | 〇 | |||
| Ag | Cu+Ni | 〇 | 〇 | 〇 | 〇 | ||
| Ni | - | 〇 | 〇 | 〇 | 〇 | ||
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