Our advanced Vacuum Coating Machine utilizes state-of-the-art evaporation boat technology to produce brilliant, uniform rainbow and iridescent effects on a wide range of substrates. Whether you need to decorate plastic, glass, metal, or ceramics, this system delivers vibrant, color‑shifting finishes that change with the viewing angle — perfect for high‑value decorative products.

Using precisely controlled resistive heating via durable evaporation boats, the system evaporates special coating materials (e.g., metal alloys, oxides, or sulfides) to form an extremely thin interference film. By fine‑tuning deposition rate, chamber pressure, and substrate rotation, you can achieve any shade of the rainbow — from golden tones to deep blue‑purple iridescence.

 Features

✅ Evaporation Boat Heating Technology

  • High‑temperature stability (up to 1,500 °C)

  • Uniform heat distribution for consistent thickness across large areas

  • Long boat life (over 20 batches) with low maintenance

✅ Coat Any Substrate – Rigid or Flexible

  • Plastics (ABS, PC, PET, PP)

  • Glass mirrors, bottles, and lenses

  • Metals (stainless steel, aluminum, zinc alloy)

  • Ceramics and wood

✅ Precise Color Control

  • Adjustable coating thickness from 50 nm to 400 nm → full rainbow spectrum

  • Automatic optical monitoring (optional) for repeatable color precision

  • Color transitions without extra masks or multiple targets

✅ Production‑Ready Efficiency

  • Cycle time: 15–30 minutes per batch (depending on chamber size)

  • Chamber volumes from 600 mm to 2,400 mm diameter

  • Rotary substrate holder for 3D parts and flat sheets

✅ Clean & Green

  • Fully enclosed vacuum process – no volatile organic compounds (VOCs)

  • Low energy consumption compared to wet electroplating or sputtering

  • Easily meets international environmental standards

Specifications

Parameter Value
Chamber size Ø1800 mm × 2000 mm (H)
Substrate material Plastic, glass, metal, ceramic
Evaporation boats Tungsten
Ultimate vacuum 8×10⁻³ Pa
Pumping system Roots + rotary vane+ diffusion pump
Coating non‑uniformity ≤ ±5%
Cycle time 20–25 minutes
Power 380 V / 50 Hz, 75 kVA

Applications:

Consumer Electronics

  • Phone cases, laptop covers, earbuds

  • Smartwatch bezels with rainbow metallic finish

 Jewelry & Fashion Accessories

  • Costume jewelry, belt buckles, eyewear frames

  • Hair clips, watch dials, keychains

 Gift & Packaging

  • Cosmetic bottle caps, perfume lids, gift boxes

  • Holiday ornaments and decorative foil

 Automotive & Interior Trim

  • Logo emblems, dashboard inserts, air vent rings

  • Wheel center caps (scratch‑resistant rainbow coating)

 Arts & Crafts

  • Glass art, ceramic figurines, decorative plates

Why Choose Our Rainbow Coating System?

  •  Proven Evaporation Boat Design – Decades of vacuum coating expertise; our boats are made from high‑density boron nitride & titanium diboride for extreme thermal shock resistance and minimal contamination.
  • Plug‑and‑Play Chromatics – No need to change materials to switch colors – just adjust the process parameters. One coating material can yield the entire rainbow spectrum.
  • Low Operating Cost – Evaporation boats cost a fraction of electron beam or sputtering sources, with simple installation and replacement.
  • Full Support – We provide installation, process training, and 24/7 technical support. Free samples testing in our lab before purchase.

Contact Hongfeng VAC

Ready to add stunning rainbow effects to your products? Contact our engineering team to discuss your required chamber size, production volume, and automation level. We will provide a tailored solution – from entry‑level manual systems to fully automated inline coaters.