ASO Co., Ltd.

Functional films are often discovered in new applications through customer inquiries. While “functional films” is a broad term, there are many types, such as:

However, our expertise and product proposals have traditionally focused on the chemical and pharmaceutical industries. As a result, we sometimes limit our offerings to existing customers’ needs.

By leveraging our website, we can reach a wider range of industries, sometimes uncovering completely new applications that we had not anticipated.

A company manufacturing and selling wood (especially interior materials) approached us regarding UV-cut films.

At first, we wondered, “UV-cut for wood?” But after discussing their needs, we learned that wood quickly discolors when exposed to ultraviolet light:

This discoloration is caused by photo-oxidation, which alters the chemical structure of wood components, particularly lignin and polyphenols that easily absorb UV light.

 Degraded compounds become water-soluble, and rain can wash them away, removing lignin from the surface and accelerating graying.

Although the structural strength of the wood is unaffected, the appearance deteriorates, which can reduce the product’s market value. This is particularly significant for high-end wood products.

One approach to completely block UV is to use black films, but this also blocks visible light, making it difficult to inspect or handle the wood—an issue also seen with blue tarps.

Instead, we applied transparent UV-cut polyethylene film, which protects against UV while maintaining visibility.

This case demonstrates that functional films can address industry-specific challenges beyond general UV protection.

If you face similar challenges or unique requirements, we encourage you to consult with us.
 Through such collaborations, we gain valuable insights and work together with our clients to solve problems effectively.