Flexible Bladder Wine Storage Eliminates Oxidation
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Solution Overview
Problem
Conventional wine storage methods, such as rigid barrels and tanks, face challenges in preventing oxidation and contamination, leading to quality reduction and wastage due to air exposure, especially when partially filled, and require frequent 'topping off' and washing.
Innovation Solution
A flexible bladder made of low oxygen permeable inert polymeric film is used inside a rigid container, minimizing air contact and eliminating the need for frequent topping off, with a single fill/drain port and vent system that prevents air introduction during filling and removal, and allows for controlled oxygen introduction for flavor development.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional rigid barrels and tanks are used for wine storage, then the wine can be stored in traditional containers, but the wine is exposed to air through headspace and porous wood, causing oxidation and quality degradation
Solution Approach 1:
The patent uses a flexible bladder made of low-oxygen-permeability polymeric film to contain the wine. This flexible barrier minimizes oxygen transmission while allowing the container to collapse as wine is removed, eliminating headspace and preventing oxidation. The bladder material specifically blocks oxygen from reaching the wine, solving the oxidation problem inherent in rigid conventional containers.
Solution Approach 2:
The system creates an inert environment by completely excluding air from the wine storage space. The flexible bladder seals the wine in an oxygen-free atmosphere, and as wine is removed, the bladder collapses to maintain this inert environment without introducing air contact that would cause oxidation.
2Productivity
If conventional rigid barrels and tanks are used for wine storage, then the containers have fixed structure, but they require frequent topping off to compensate for evaporation and sampling losses
Solution Approach 1:
The flexible bladder dynamically adjusts its volume as wine is added or removed. Unlike rigid containers with fixed volume, the bladder expands when filled and collapses when wine is withdrawn, maintaining a full state without headspace. This dynamic adaptation eliminates the need for periodic topping off operations.
Solution Approach 2:
The flexible bladder system is self-regulating through its collapse mechanism. As wine is removed, the bladder automatically collapses to fill the space, preventing air ingress without requiring manual intervention. This self-service characteristic eliminates the need for operator attention for topping off.
3Reliability
If wooden barrels are used for wine aging, then the wine can develop characteristic flavors, but air diffuses through the porous wood causing oxidation and contamination
Solution Approach 1:
The flexible polymeric bladder provides a non-porous barrier that completely blocks oxygen diffusion, unlike porous wooden barrels. This impermeable film prevents oxidation while still allowing controlled micro-oxygenation to be introduced through the single port if desired for flavor development.
Solution Approach 2:
The system combines the flexible low-permeability polymeric bladder with optional wood staves or chips placed inside. This composite approach allows the wine to contact wood for flavor development while the bladder prevents excessive oxygen transmission through the wood, solving both flavor development and oxidation protection needs.
4Ease of manufacture
If conventional storage containers are used, then the containers can be reused, but they require extensive washing to prevent contamination from bacteria and fungi
Solution Approach 1:
The flexible bladder is designed as a disposable single-use component. After each use, the bladder is discarded rather than cleaned and reused. This eliminates contamination risks from previous contents and removes the need for extensive washing operations, while the rigid outer container can be reused without direct wine contact.
Solution Approach 2:
The flexible bladder is extracted as a separate removable component from the rigid storage container. This separation allows the bladder to be easily removed and discarded after use, while the rigid container serves only as structural support and never contacts the wine directly, eliminating cross-contamination risks.
5Strength
If rigid containers are used for wine storage, then the containers provide structural support, but they create headspace that introduces air and degrades wine quality
Solution Approach 1:
The flexible bladder provides the wine-containing barrier while the rigid outer container provides only structural support. The flexible nature of the bladder allows it to collapse completely as wine is removed, eliminating headspace and preventing air contact, while the rigid container maintains its structural integrity throughout the process.
Solution Approach 2:
The system segments the storage function into two separate components: the rigid outer container providing structural support and the flexible inner bladder containing the wine. This segmentation allows each component to optimize its specific function without compromise—the rigid container doesn't need to be wine-contacting, and the flexible bladder eliminates headspace.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces oxidation, minimizes contamination, eliminates the need for frequent wine additions and washing, and ensures a sanitary and cost-effective wine storage process while maintaining wine quality over time.
Implementation Method 1
flexible bladder comprising of an inert polymeric film that has very low oxygen permeability
Data Source
AI summary
An apparatus for the storage and aging of wine that comprises of a disposable flexible bladder contained within a rigid support container. The flexible bladder has a fill/drain port connected to an internal dip tube that allows the bladder to be filled and emptied repeatedly without any contact with air. This allows the wine to remain fresh and unoxidized during storage and aging. The apparatus can be used in multiple support containers, such as barrels, IBCs, and tanks. The apparatus has no moving parts and uses disposable contact materials that eliminate washing and water usage. Single-use components ensure sanitary operation and this combined with the elimination of oxygen in contact with the wine produces consistently higher quality product.