Everybody knows the principle of a dishwasher freshener — that small device attached to the cutlery basket to neutralize bad odours and release a pleasant lemon scent during washing cycles.
To achieve this effect, the deodorant packaging must protect the fragrance before use, then activate its diffusion once the washing cycle begins. This is possible thanks to a complex film, which combines several layers, each with its own specific properties.
The film used in dishwasher fresheners developed by Soltec consists of three layers:
A special PE film, which acts as the diffuser.
An adhesive layer, bonding the PE film to the PVOH layer.
A water-soluble PVOH film, which protects the fragrance and triggers its release once dissolved in water.
In this article, we highlight the key advantages of the Soltec PVOH/PE complex film used for dishwasher fresheners.
Specialized in the water-soluble films, Soltec has developed a high-quality PVOH/PE complex film with specific features that we are going to discover together !
1️⃣ A barrier protection to perfume
The first major advantage of Soltec’s complex film is its barrier property.
The PVOH film prevents perfume evaporation, ensuring the fragrance remains intact from production to use.
This protection is essential to guarantee product quality and freshness. Thanks to Soltec’s formulation, the shelf life of a freshener packaged with our PVOH/PE complex film can reach up to one year.
2️⃣ A long-term diffusion film
Another key benefit is controlled fragrance diffusion over time.
The Soltec PVOH/PE complex film has been designed to ensure continuous and consistent scent release for up to 60 washing cycles.
As a result, the user enjoys long-lasting freshness and reliable product performance.
3️⃣ An attractive packaging
In some cases, complex films may show visual defects that affect product appearance.
If the layers are not properly bonded, the fragrance can penetrate the inner film, weaken the adhesive, and cause the outer film to peel off — forming small bubbles on the packaging surface.
However, Soltec’s PVOH/PE complex film eliminates these issues.
Its optimized resistance prevents delamination, maintaining both the film’s functionality and attractive visual quality.
4️⃣ Productivity gain and savings
Efficiency matters in industrial packaging.
Many complex films require pre-conditioning to strengthen lamination — a process that takes time and increases costs.
By contrast, the Soltec PVOH/PE film is ready to use and requires no special preparation.
It also adapts easily to high-speed packaging machines, sealing efficiently and allowing faster production.
Therefore, manufacturers benefit from higher productivity and optimized packing costs.
Conclusion
In summary, the Soltec PVOH/PE complex film meets all performance and quality requirements for dishwasher freshener applications.
It provides excellent barrier protection, long-lasting diffusion, and strong mechanical resistance, all while improving production efficiency.
Moreover, similar applications are possible — for example, as an ambient fragrance diffuser that activates with a small amount of water.
👉 Soltec Development continues to innovate in water-soluble film technologies, offering sustainable, high-performance packaging solutions tailored to your industrial needs.