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Thin Film Machine

Thin Film Machine

A Thin Film Casting machine is designed for manufacturing low gsm film of different thickness or weight. The machine shall encompass a Doctor Blade Set-Up.

The solvent based volatile mix is directed to form a bank on the substrate (tempered glass sheet) that conveys over a flat plate. A doctor knife is used to form films that controls the thickness. The substrate with the film is introduced to the heating chamber for evaporation of the volatile content.

    The current version of the machine is equipped with:
  • Doctor Blade
  • Heating & Cooling
  • Trapping of volatile content to prevent pressure build up in the heating chamber
  • Control Systems

Thin Film Deposition

Thin-film deposition techniques include chemical vapor deposition (CVD) and physical vapour deposition (PVD). PVD involves vaporizing the target material, which condenses on the substrate surface, forming a deposited film. PVD deposition techniques include a thermal evaporation process or vacuum evaporation, sputtering, and ion plating.

Thermal Evaporation

Thermal evaporation deposition occurs in a chamber under the pressure of 10(-6) to 10(-5) mbar. A crucible that connects to a high-current source holds the target material. Here are the basic steps for thermal evaporation deposition:

  • 1. As the target material heats, it releases vapor particles that create vapor pressure.
  • 2. The vapor stream crosses the chamber and coating particles attach to the substrate.
  • 3. Throughout the process, the vacuum pump keeps working to maintain a high-vacuum environment and ensure a free path for the film particles.

Composites in Construction Industry

Composite materials, which are made by combining two or more materials with different physical and chemical properties, are increasingly being used in the construction industry due to their high strength, durability, and lightweight. Some common applications of composite materials in construction include:
  • Reinforced Concrete: The most common use of composites in the construction industry is in the form of reinforcing bars, also known as rebars, which are made of carbon fiber reinforced polymer (CFRP). These rebars offer higher tensile strength than traditional steel rebars, and also prevent the formation of rust and corrosion.
  • Facades: Composite materials, such as fiber reinforced polymers (FRPs), are used in the construction of building facades, which provide an aesthetically pleasing finish and improve the energy efficiency of the building.
  • Bridges: Composite materials are used in the construction of bridge decks, girders, and cables. These materials offer high strength and durability, and can also reduce the weight of the bridge structure, which reduces the cost of construction.
  • Pipes: Composite materials are used in the construction of pipelines, which are used for transportation of oil, gas, and water. These materials offer high resistance to corrosion, and also have high durability and strength.
  • Modular Buildings: Composite materials are used in the construction of modular buildings, which are pre-fabricated offsite and assembled on site. These materials offer high strength and durability, and can reduce construction time and costs.