A traditional food fermentation factory focuses on rice vinegar and fruit vinegar production.
During fermentation, raw vinegar liquid needs temporary sealed standing storage.
The weakly acidic vinegar liquid requires acid-resistant food-grade containers.
The single storage capacity is 10L, and the storage period lasts 7–15 days.
Anti-corrosion and sealed fermentation are the core production requirements.
Existing Drawbacks of Traditional Containers
The factory originally used ceramic jars and thin plastic buckets.
Ceramic jars are heavy and fragile during workshop transportation.
Ordinary plastic buckets cannot resist weak acid corrosion.
Long-term storage causes plastic aging and harmful substance precipitation.
Loose sealing leads to volatile acetic acid loss and flavor deterioration.
Customized Liquid Container Solution
The fermentation factory adopted our Collapsible Square Liquid Drum.
This 10L drum is made of acid-resistant food-grade PE material.
It belongs to Industrial Flexible Cubic Drum suitable for weak acid liquid.
As a Foldable Square Liquid Storage Vessel, it has excellent chemical stability.
The heat-sealed sealing lid prevents acetic acid volatilization and external bacteria.
Structural & Functional Advantages
The special modified material resists weak acid corrosion below 10% concentration.
No plastic precipitation occurs during vinegar fermentation and standing.
The square vertical structure keeps liquid precipitation layered naturally.
After fermentation, the empty drum can be folded flat to save warehouse space.
The foldable design reduces idle storage volume by 82%.
9-Month Fermentation Trial Results
After 9 months of continuous fermentation testing, product quality improved greatly.
Acetic acid volatilization loss was reduced by 42%.
No container aging or cracking occurred in acidic environment.
Vinegar flavor purity was significantly improved without peculiar smell.
Workshop container storage pressure was effectively relieved.
Stable Data & Long-term Promotion
All vinegar products passed food safety inspection with zero harmful residues.
This Cubic Liquid Container is now standard for vinegar intermediate fermentation.
Performance Comparison Table
Comparison Item | Ceramic Jar & Ordinary Plastic Bucket | Our Collapsible Square Liquid Drum |
|---|---|---|
Acid Resistance | Poor, easy aging precipitation | Stable weak acid resistance |
Acetic Acid Volatilization | Severe flavor loss | 42% volatilization reduced |
Weight & Mobility | Heavy and fragile | Lightweight and portable |
Idle Space Occupancy | Fixed large space occupation | 82% space saved |
Food Safety Stability | Hidden precipitation risk | FDA food-grade safe material |
Project Conclusion
This vinegar fermentation case proves foldable drums are suitable for acidic food liquid.
Acid-resistant material + sealed structure ensures fermentation flavor purity.
It provides low-cost intermediate storage solution for traditional fermentation factories.
