Upgrade your production line with our industrial DC magnetron sputtering system, designed specifically for applying ultrathin, pinhole-free 304 stainless steel coatings onto disposable plastic cutlery (spoons, forks, knives, etc.). The resulting coated products are safe for direct food contact and readily pass FDA migration tests.
Why This Machine?
Conventional metal coating methods (electroplating, thermal evaporation) cannot reliably bond stainless steel onto plastic without using toxic primers or causing delamination. Our DC magnetron sputtering technology solves this problem – delivering:
Strong adhesion on PP/PS substrates without heating (room‑temperature process)
Dense, non‑porous stainless steel layer – prevents food acids from attacking the plastic
No heavy metals, no toxic effluents – clean, green, and FDA‑friendly
Batch or inline configuration – from R&D to mass production
Features of the sputtering system for Food-Contact Applications
| Feature | Benefit |
|---|---|
| DC magnetron sputtering source | Uniform deposition of AISI 304/316 stainless steel over 3D plastic cutlery shapes |
| Rotating or tumbling substrate holder | 360° coverage – coats the entire spoon bowl and handle without shadowing |
| High‑vacuum chamber (customizable size) | Eliminates contamination – essential for FDA cleanability |
| Closed-loop gas & pressure control | Reproducible coating quality batch after batch |
| In-situ plasma cleaning (Ar or O₂) | Removes surface organics from plastic, maximizing adhesion prior to deposition |
| Optional load-lock system | Fast cycle times for high‑volume production |
How the Process Works
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Load – Plastic spoons/forks are placed onto custom fixtures or tumbling basket.
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Vacuum pumping – Chamber pumped to < 5×10⁻³ Pa.
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Plasma clean – Argon plasma etches surface for 2–5 min (no chemicals).
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Sputter – DC power applied to 304 stainless steel target; Ar⁺ ions eject metal atoms that deposit onto the plastic.
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Vent & unload – Coated parts ready for packaging.
Cycle time: 15–30 minutes per batch (depending on chamber size and desired thickness).
Why Buy From Us?
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Specialized in plastic PVD – Over 60 machines installed for coating polymers (automotive, medical, food contact)
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Turnkey solution – Includes target, fixturing design, vacuum pumps, and chiller
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Global service – Spare parts supply and remote diagnostics within 24h
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CE & ISO 9001 certified – Safe and reliable
Who Should Buy This Machine?
| Customer Type | Application |
|---|---|
| Disposable tableware manufacturers | Upgrade low‑cost plastic cutlery to premium metal-coated line |
| PVD coating job shops | Offer FDA‑safe stainless steel coating service for catering brands |
| R&D labs / universities | Develop novel food‑contact metal-polymer composites |
| Sustainable packaging companies | Create reusable‑feeling but lightweight utensils |