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Our Company Has Developed Induction Heating Type Vacuum Tin Metallizer for Paper
Our company has successfully developed a medium-frequency induction heating type vacuum tin metallizer capable of directly metallizing onto paper materials.
This machine can metallize tin, aluminum, and mixtures of tin and lead onto roll films such as PET, OPP and paper through medium-frequency induction heating deposition. It is particularly suitable for coating food packaging paper, joss paper as well as flexible packaging. Notably, the ashes of the tinned joss paper exhibit a yellow color after burning, demonstrating the excellent metallizing performance. The machine significantly reduces production costs, while delivering superior results. This type of vacuum tin Metallizing Machine has already been sold to Zhejiang Province.
What’s the difference between evaporation boat type and induction type roll to roll vacuum metallizing machine?
Roll to roll (R2R) Vacuum Metallizing Machines are widely used for depositing an extremely thin metal film on substrates. Two common evaporation methods in such machines are induction heating type and boat resistive heating type. While both aim to vaporize metal for deposition, their differences are significant.
1. Heating Mechanism
Boat type vacuum metallizing machines rely on resistive heating. A refractory metal boat (e.g., Boron Nitride, molybdenum) holds the coating metal, and an electric current passes through the boat to generate heat, then the metal melts, vaporizes and condenses onto the substrate.
In contrast, induction type vacuum metallizing machines use electromagnetic induction. An alternating current in a coil creates eddy currents within a conductive crucible, enabling non-contact heating.
2. Material Compatibility
Boat type vacuum metallizing machines face limitations due to boat-material interactions. High-melting-point metals may react with the boat, causing contamination or short lifetimes.
In contrast, induction type vacuum metallizing machines avoid direct contact between the crucible and metal, reducing contamination risks. It is better suited for high-purity applications or metal with extreme melting points.
In summary, induction type vacuum metallizing machine excel in high-temperature, high-purity scenarios. The choice depends on material properties and desired film quality.