Structure and Working Principle of Dual Chamber Pouch
A typical double-chambered bag consists of the following components:
Chamber A & Chamber B: Two separate storage spaces.
Isolation Sealing Strip: Located between the two chambers, it is crucial for preventing the contents from mixing prematurely. It is usually a specially designed, controllable strength heat-sealed edge.
External Sealing Edge: The overall sealing edge of the bag.
Exit/Opening: Can be a suction nozzle, a regular bag opening, or an easy-tear opening.
Working principle:
When in use, the user applies physical pressure to one or more chambers of the bag by squeezing, rubbing, or folding it. When the pressure is sufficient, the middle isolation sealing strip will burst or peel off from the inside, allowing the contents in the two chambers to flow and mix with each other. After the mixture is formed, the user can obtain the final product by opening the suction nozzle cover or cutting the corner of the bag.
Common types
Based on the mixing method and the design of the outlet, it is mainly divided into:
No outlet separation bag: After mixing, the bag corners need to be cut or the contents need to be poured out through an outlet. Commonly used in medical and industrial fields.
With suction nozzle separation bag: After mixing, it can be directly poured out through the suction nozzle or used by squeezing. This provides the best user experience. Commonly used in food and daily care fields.
Multi-chamber bag: The number of chambers is more than two, used for more complex formulas.
What Are the Application Fields That Dual Chamber Pouch Can Be Used?
The application of the double-chamber bag is a perfect demonstration of its functional value:
1. Food and beverages:
Health supplements: Concentrated fruit juice and vitamin powder are separated.
Seasonings: Oil and vinegar, sauces and spice packets are separated.
Infant food: Rice powder and nutrient solution are separated and mixed when used.
2. Daily-use products:
Hair dye: Dyes and oxidants are separated, mixed when used to ensure activity.
Epoxy resin/glue: Resin and curing agent are separated.
High-end skin care products: High-concentration essences (such as VC powder) and base liquids are separated to maintain component activity.
3. Medical and industrial:
Medical disinfectant: Two chemical reagents are separated, mixed when used to generate disinfectant gas.
Dental impression material: Base material and catalyst are separated.
Examples: Application of Dual Chamber Bag for Nut & Dried Fruit Products
Dual-chamber bag is an upgraded version of the mixed dried fruit packaging.
Applied to the mixed packaging of nuts, dual-chamber bags are also for the same purpose of wet and dry separation. Compared to the simple nut mix, the mix of soft dried fruit plus crunchy nuts obviously have a more delicious taste levels. But the moisture from the dried fruit will affect the taste of the nuts. And dual-chamber bags came into existence to solve this problem.
Benefits:
Keeps nuts crunchy by keeping away moisture from the dried fruit.
Convenient to carry and enjoy -High quality peel that is specifically tailored to give exceptional clean and controlled seal/peel open performance.
Let consumers feel the care of the brand and increase their recognition of the brand.
Brands can fill the nuts and dried fruit into separate chambers, and then do not need to worry about the nuts will lose their crispy taste because of the moisture from the dried fruit. When consumers eat them, they can easily tear the special seal in the dual-chamber bag and then mix the dried fruit with the nuts to enjoy the most delicious snack that the brand wants to offer to consumers.
What Are the Advantages and Challenges of Dual Chamber Pouches?
Advantages:
1. Maximize product efficacy: Ensure that the product is in its most active state when used by consumers.
2. Create unique selling points: The packaging itself is a powerful story of technological innovation.
3. Enhance user experience: Simple operation, eliminating the need for manual weighing and mixing, and precise proportion.
4. Extend shelf life: Solves the fundamental problem of product formula stability.
Challenge:
1. High cost: The complex production process and lower yield rate result in its cost being much higher than that of ordinary self-standing bags.
2. High technical barriers: The strength and consistency of the isolation seal are the biggest challenges. Defective products will cause leakage or inability to mix during transportation or storage.
3. Complex filling: Special double-head filling equipment is required, and each chamber needs to be filled separately.
4. Design limitations: The position and shape of the internal isolation strips will affect the overall design and standing stability of the bag.
