Unit Dose Cleaning Pouches With Pressure Differential Shape Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Unit dose cleaning products face issues with pouch integrity, shape retention, and environmental sustainability due to thin walls and bulky packaging, which affect their durability and consumer perception of quality.
Innovation Solution
A web of cleaning products is created using first and second carrier sheets with depressions, where the internal atmosphere of the pouches is evacuated to create a pressure differential, compressing the cleaning composition into the pouches and maintaining their shape, and the packaging is made from recyclable materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the pouch walls are made thin to reduce material usage and cost, then material consumption decreases, but the pouch becomes susceptible to damage and loses integrity
Solution Approach 1:
The patent changes the pressure parameter of the internal atmosphere within the pouch, creating a pressure differential where the internal pressure is lower than the external atmospheric pressure. This pressure difference generates an inward compressive force that strengthens the pouch structure, allowing thin walls to maintain integrity and resist damage while minimizing material usage.
2Ease of manufacture
If the pouch is filled loosely to accommodate filling variations, then manufacturing flexibility increases, but the pouch loses shape retention and appears soft
Solution Approach 1:
The patent applies a pressure differential parameter change where the internal atmosphere pressure is reduced below external atmospheric pressure. This creates a net inward compressive force that consolidates the cleaning composition and compresses the pouch into the depression, providing shape retention and structural definition while maintaining filling flexibility during manufacturing.
3Reliability
If laminated barrier bags are used to protect pouches, then pouch protection improves, but the packaging becomes bulky and difficult to stack
Solution Approach 1:
The patent changes the pressure parameter of the internal atmosphere to create a vacuum or reduced pressure environment within the pouch. This causes the pouch to collapse inward and conform tightly to the depression shape, eliminating the need for bulky protective packaging while maintaining pouch protection through the pressure differential and rigid carrier sheet structure.
4Shape
If the pouch is compressed into the depression, then shape retention and aesthetic appearance improve, but the pouch may stick to the carrier sheet
Solution Approach 1:
The patent extracts or removes the excess material between the pouch and the depression walls by creating a pressure differential that pulls the pouch walls against the depression surfaces. This eliminates gaps and potential sticking points, allowing the pouch to be compressed into a tight fit that maintains shape while facilitating clean removal during use.
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
The solution enhances the durability and shape retention of the cleaning products, making them more aesthetically pleasing and suitable for specific applications, while also improving environmental sustainability through recyclable materials.
Implementation Method 1
A second internal atmosphere exists between the first carrier sheet and the plurality of pouches. The second internal atmosphere has a greater absolute pressure than the first internal atmosphere so that the plurality of pouches and at least a portion of the cleaning composition in the plurality of pouches are compressed into the plurality of depressions
Data Source
AI summary
A web of cleaning products and a method of manufacturing the same is disclosed. The web includes first and second carrier sheets and a plurality of pouches containing a cleaning composition. Each of the pouches is disposed in a respective depression formed in an upper surface of the first carrier sheet. A first internal atmosphere is enclosed within each of the pouches. The first carrier sheet is sealed to the second carrier sheet such that a second internal atmosphere exists between the second carrier sheet and the plurality of pouches. The second internal atmosphere has a greater absolute pressure than the first internal atmosphere so that the plurality of pouches and at least a portion of the cleaning composition in the plurality of pouches are compressed into the plurality of depressions in the first carrier sheet by the second internal atmosphere.