Top 5 Best Heat Insulating Film Manufacturing Technologies Today

To reduce the reflective mirror effect of the film and increase its color diversity while maintaining excellent heat control, a combination of metal coating and dyeing technologies is used, resulting in Hybrid Film. This approach merges dyed film with metal-coated film to create a product that doesn’t reflect light but still retains excellent insulation properties due to its metal layer. The film is more durable and lasts longer than regular dyed films.

The combination of dyeing and metal coating offers several advantages: superior heat blocking, effective glare reduction, up to 99% UV ray elimination, high durability, and color stability that doesn’t turn from black to purple when exposed to sunlight.

The only downside is that hybrid films are more expensive than dyed films. However, they combine the best features of both dyeing and metal coating with minimal drawbacks.

LLumar heat insulating films are a renowned brand known for this technology, trusted in over 125 countries and regions.

This technology utilizes ultra-fine ceramic Nano particles and is considered the most advanced technology in the field of heat insulating film production. Nano Ceramic films primarily work by blocking and eliminating infrared (IR) rays, which are a major cause of heat from sunlight. These films reject 45-65% of heat while allowing up to 85% of light to pass through, offering exceptional physical durability. Nano Ceramic technology does not create any reflective surface on the film, making it almost entirely transparent. It is particularly suitable for the windshield of cars or projects requiring transparent glass while still providing remarkable heat rejection.

Unintended Effects: Like Sputtered films, Nano Ceramic films are quite expensive compared to standard films. Nano Ceramic films can be manufactured in various light transmission levels, creating a diverse range of products. The outer Nano Ceramic coating enhances the film's resistance to environmental damage, ensuring high durability even in higher-than-usual temperatures. The only limitation of this film is its less effective ability to cool the glass or block heat from radiating from the glass compared to dyed films.

Technical Principle: There is no single principle for all Nano Ceramic films.

Usage Note: Nano Ceramic films are suitable for all types of constructions. The only consideration you need to make is the price and ensure the glass thickness does not exceed 5mm for direct sunlight exposure.

This process involves immersing or dyeing the film's surface to achieve a high-quality and colored appearance. It is one of the pioneering technologies that led to a revolution in blocking heat from sunlight by applying ultra-thin metal ion layers onto the film. The presence of metals gives these films exceptional thermal insulation properties, making them top-tier. The primary mechanism for heat insulation is the reflection of sunlight, which is why metal-coated heat-insulating films are often called Reflective Films. The level of heat insulation depends on the thickness of the metal layer applied to the film.

Features of Dyed Films:

• Durable, does not peel, and comes in a wide range of colors.
• Has a composite layer covering the film's surface.
• Flexible and can withstand bending without permanent damage.
• Cost-effective.
• Poor thermal insulation.
• Low UV blocking capability.

Unwanted Effects: Besides providing heat insulation, the metallic coating on Reflective Films can cause unwanted side effects, such as turning your window into a mirror, especially at night when your glass looks like a mirror, limiting the view from the inside.

Technical Principles: A common feature of films using metal coatings is that the higher the reflectivity (VLR), the lower the light transmission (VLT), and the greater the solar energy rejection (TSER).

Usage Notes: Metal-coated films are best for office buildings, commercial properties, factories, and glass roofs. They are not suitable for residential homes. These films primarily reflect sunlight, including heat-causing rays, which makes them ideal for most window types as they don’t cause glass to heat up or crack due to thermal expansion.

The film is passed through a chamber containing metal elements, usually aluminum, nickel-chromium, or sometimes copper. A vacuum is created in the chamber by reducing the pressure, and then Argon gas and the metal elements are heated until they melt. The heat causes the metal particles to move and settle on the surface of the film. The thickness of the metal coating is controlled by the speed at which the film passes through the coating chamber. Metal-coated films provide excellent thermal insulation, attractive colors, and the color of the film corresponds to the metal sputtered onto it.

Unwanted Effects: Dyed heat-insulating films rarely cause significant issues, other than altering the color of your glass. The intensity of the color can be adjusted by varying the dye concentration. Additionally, the risk of overheating the glass should be considered, especially if you're using thin, untreated glass, as the temperature on the glass may reach up to 60°C during peak sunlight. This film technology is quite safe and suitable for all types of buildings. Solar energy rejection ranges from 49-73%, and it blocks up to 99% of UV rays with minimal unwanted side effects, which is why Dyed films remain popular in the market.

Technical Principles: The most common characteristic of Dyed films is that the lower the light transmission (VLT), the higher the thermal insulation (TSER), and the reflectivity (VLR) is generally moderate.

Usage Notes: There are no significant concerns with using Dyed films, as mentioned above, they are safe for most buildings. They are particularly suitable for homes, apartments, hotels, and commercial buildings due to their energy-saving and heat-absorbing properties. The only consideration is that it might not be suitable for glass thinner than 5mm, as the glass could crack due to excessive heat buildup during the absorption of solar energy.

Sputtering is a complex process where metals are atomized and deposited onto the film's surface in a vacuum chamber. The process is driven by an electromagnetic field that directs ionized gas (usually Argon) toward the metal. The metal is bombarded, causing it to fragment and evenly spread onto the film's surface. The key advantage of this technology is its ability to sputter up to 30 different metals. Moreover, more than 100 layers of metal can be applied, each with a thickness no thicker than a human hair.

Different metals are selected based on their ability to block radiation from the sun's spectrum. The result is a film with high reflectivity and minimal mirror-like effects. The heat is absorbed, and the color remains stable. Sputtered films are expensive, making them some of the top-priced options on the market. The metal layer controls solar radiation through its reflectivity. The structure of the film is simple, consisting of a polyester base, a metal coating, an adhesive layer, and a scratch-resistant coating.

In some cases, the characteristics of dyed films and metal films are distinct. While dyed films have some reflective heat absorption, metal films tend to absorb more heat, and the metallic color is much more complex.