Packaging Valve Membrane Segmentation for Pressure Relief
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Solution Overview
Problem
Existing overpressure valves for packaging containers are complex and costly to produce, with materials being prone to external influences and requiring extensive material input, which complicates their manufacturing and integration into packaging containers.
Innovation Solution
A simplified overpressure valve design featuring a membrane connected to a surrounding film via a connection region, allowing for easy introduction and reduced material usage, with the membrane being freely movable and integrated into a construction using a base film, frame film, and cover film, enabling reliable pressure reduction with low opening and closing pressures, and improved recyclability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex base body structure with two-step deepening and large-area membrane connection is used, then the valve provides stable sealing, but the manufacturing complexity and material input increase significantly
Solution Approach 1:
The valve is divided into separate functional components: a membrane element and a base body element that are joined together. The membrane is connected to the base body at discrete connection regions rather than over a large area, simplifying both components while maintaining sealing functionality through the fluid layer and connection architecture.
Solution Approach 2:
The membrane is implemented as a thin, flexible film that can deform to provide sealing. The membrane element includes a deformable surface that responds to pressure changes, providing reliable sealing without requiring a complex rigid base body structure. The thin film approach reduces material input and manufacturing complexity.
2Reliability
If the membrane is connected to the base body over a large area, then the sealing is more stable, but the valve becomes more susceptible to external influences like warpage and manufacturing costs increase
Solution Approach 1:
The connection between membrane and base body is segmented into discrete connection regions rather than a continuous large-area connection. This reduces the membrane's susceptibility to warpage and external influences while maintaining sealing stability through the fluid layer that accommodates minor deformations.
Solution Approach 2:
The membrane is extracted as a separate membrane element that can be independently manufactured and then joined to the base body. This separation allows the membrane to be optimized for flexibility and sealing while the base body provides structural support, reducing mutual interference and susceptibility to external influences.
3Reliability
If traditional injection-molded valve construction is used, then the valve provides stable pressure management, but the material input and manufacturing complexity are high
Solution Approach 1:
The membrane is implemented as a thin film structure that provides pressure management functionality with minimal material input. The deformable surface of the membrane responds to pressure changes, enabling stable pressure management while using significantly less material than traditional injection-molded valve constructions.
Solution Approach 2:
The valve combines the membrane element with a base body element to create a composite structure that leverages the advantages of both components. The membrane provides flexible pressure response with low material input, while the base body provides structural support and integration capabilities, achieving stable pressure management with reduced overall material consumption.
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 valve is produced more efficiently and cost-effectively with reduced material input, offering high bending stiffness and improved handling, while maintaining favorable pressure management characteristics and environmental compatibility.
Implementation Method 1
An overpressure is reliably reducible via this channel. The connection region is arranged opposite the channel. This permits an especially favorable lifting of the membraned toward the channel, for the purpose of reducing the overpressure in the packaging container.
Data Source
AI summary
A valve for a packaging container is proposed, wherein the valve comprises at least one base film (10) with an opening (11), at least one frame film (13) encompassing a free region (17), and at least one membrane (12) which is arranged on the base film (10) and covers the opening (11), wherein a fluid is provided between the membrane (12) and the base film (10),wherein the membrane (12) is connected to a surrounding film (20) via at least one connection region (22), the surrounding film (20) being connected on one side to the base film (10) and on its other side to the frame film (13) and the membrane (12) being arranged movably within the free region (17), wherein the surrounding film (20) is open at least in one point, such that a channel (18) is formed.