Seamless Stand-Up Pouch With Graduated Thickness
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Solution Overview
Problem
Conventional pouches lack the ability to stand upright independently, are prone to leaks or tears due to heat seals, and require complex gusset patterns or multilayer panels for support, making them inconvenient for filling without user assistance.
Innovation Solution
A pouch design featuring a body with a thicker lower portion and thinner upper portion, allowing it to stand upright, formed from a seamless thermoplastic film with a graduated thickness and a leak-proof interlocking closure mechanism, enabling independent upright positioning and easy collapse for storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a typical pouch is made from thin film to be flexible and collapsible, then the pouch can be folded and stored efficiently, but the pouch cannot stand upright by itself without external support
Solution Approach 1:
The pouch employs varying film thickness across different regions: a thicker lower portion (first thickness) provides structural support for upright standing, while a thinner upper portion (second thickness) maintains flexibility for collapsing and storage. This local differentiation of material properties resolves the contradiction between standing stability and collapsible flexibility.
2Stability of the object's composition
If heat seals are used along sides and bottom of the pouch, then the pouch can be sealed and maintain structure, but leaks or tears are more likely to occur at these seal locations
Solution Approach 1:
The invention removes the heat seal seams from the pouch design by using a seamless construction method. The pouch is formed as a single continuous piece of film without joined seams, eliminating the weak points where heat seals would create potential leak or tear locations while maintaining structural integrity through the seamless design.
3Stability of the object's composition
If complex gusset patterns or multilayer wall panels are used to enable the pouch to stand upright, then the pouch can maintain its shape, but the device complexity increases
Solution Approach 1:
Instead of using complex gusset patterns or multilayer panels throughout the entire pouch, the invention applies a localized thickness increase only in the lower portion of the pouch. This targeted approach provides the necessary structural support for upright standing while keeping the rest of the pouch simple and easy to manufacture, avoiding the complexity of extensive gusseting or multilayer construction.
Data Source
AI summary
A pouch includes a seamless body having a first end and a second end opposite to the first end, with a substantially flat, planar base at the first end. First and second opposing walls extend upwardly from the planar base to form an elongate mouth at the second end. Each of the opposing walls includes an upper wall portion and a lower wall portion. The upper wall portions extend to the elongate mouth and the lower wall portions extend to the planar base. The first and second opposing walls have a varying thickness. An elongate closure mechanism, adjacent to the elongate mouth, provides a resealable closure for the pouch. The seamless body stands independently in an upright position upon the planar base when the body is in an expanded position. The pouch, being both flexible and collapsible, can be folded into a substantially flat condition.