The Patented 3-Layered “Proguard” Film
Proguard Film is a highly functional 3-layered film used in the manufacturing of a huge variety of storage and transport bags.

This film has been granted an International Patent for several values:
- Gas barrier properties
- Odor-resistant
- Antibacterial
- Antiseptic
- Moisture-proof

Proguard is officially registered with the Sustainable Technology Promotion Platform (STePP) of the United Nations Industrial Development Organization (UNIDO) Tokyo Office. Recognized as an innovative technology within the agribusiness food value chain, Proguard is poised to support the achievement of Sustainable Development Goals (SDGs) , specifically “Goal 2: Zero Hunger” and “Goal 9: Industry, Innovation, and Infrastructure.”



Triple the Protection: Proguard’s Multi-Layered Packaging Film for Extended Freshness
Developing countries often face significant post-harvest losses due to limited access to resources, infrastructure, and storage facilities, which threaten food security. The “Proguard” film provides an innovative packaging solution that extends the shelf life of food and beverages. It is effective for both local consumption and export, helping preserve food during transportation. Comprised of three laminated layers with antimicrobial agents and antioxidants, “Proguard” offers enhanced preservation benefits that surpass single-layer films.
Combined with a high-tightness fastener, “Proguard” functions effectively against the contents of the bag while providing a package that can be easily reused.
The criteria for registration is “superior technology that contributes to industrial development in developing and emerging countries,” which is judged based on the following five technical criteria and the business stance of the company concerned:
1) Applicability in developing and emerging countries
2) Comparative advantage over competing technologies
3) Consistency with UNIDO’s role in industrial development
4) Contribution to sustainability when the technology in question is applied
5) Technological maturity URL: http://www.unido.or.jp/en/activities/technology_transfer/technology_db/
Proguard Film is insect-proof
An advanced function of Proguard Film is the ability to protect against insects.

This is a comparison of Proguard Film and a polyethylene storage bag.
Test insects: Black carpet beetle (larvae)
Test details: Sixty test worms were enclosed in each sample along with a woolen cloth and stored at room temperature. After 14 days, the mortality rate of the test worms and the feeding damage to the wool cloths was evaluated.



All test insect larvae in the Proguard Film bag had died after the 14 day period, but the same insect larvae stored in a typical polyethylene bag had survived and damaged the cloth. Proguard Film containers effectively seal out the oxygen insects need to survive.
Proguard Film is Antibacterial
Proguard Film is antibacterial. Samples of E. coli and Staphylococcus bacteria were tested, and after 24 hours the levels of bacterial were below the detection limits.

Proguard Film is Moisture-Proof
The film is moisture-proof, oxygen and UV blocking.

