Packaging Opening Device with Thermally Incompatible Membrane
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Solution Overview
Problem
Existing opening devices for packaging containers often require a two-step process to open and seal, which can be cumbersome and may not provide an adequate barrier against microorganisms or gases, especially when using thermally incompatible materials that do not bond during production.
Innovation Solution
An opening device with a support part and a membrane part mechanically connected, allowing for a one-action opening and sealing mechanism, where the membrane and support parts are made from non-weldable materials that are thermally compatible with the packaging material, enabling a secure and efficient seal during manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a two-step opening process is used with separate cap and membrane components, then the seal reliability is improved, but the device complexity and ease of operation deteriorate
Solution Approach 1:
The patent combines the cap and membrane into a single integrated opening device component. The membrane is positioned within the cap structure such that they function as one unified unit, eliminating the need for separate attachment steps and reducing device complexity while maintaining seal reliability through the integrated design.
Solution Approach 2:
The integrated opening device performs multiple functions simultaneously: the cap provides mechanical support and closure, while the embedded membrane provides the seal barrier. This multi-functional design eliminates the need for separate components and attachment mechanisms, reducing overall device complexity while maintaining reliable sealing.
2Adaptability or versatility
If thermally incompatible materials are used for cap and membrane, then material selection flexibility is improved, but manufacturing reliability deteriorates
Solution Approach 1:
The patent segments the manufacturing process into two distinct stages: first forming the cap structure, then injecting the membrane material into the cap. This segmentation allows the use of thermally incompatible materials since the membrane is injected as a molten material that sets within the pre-formed cap, avoiding the need for thermal bonding between incompatible materials while maintaining manufacturing reliability.
Solution Approach 2:
The cap structure is pre-formed before the membrane material is injected. This preliminary action allows the cap material to be fully established and cooled, then the membrane material is injected into the pre-formed cap structure. This sequence enables the use of thermally incompatible materials while ensuring manufacturing reliability, as the injection process occurs after the cap structure is stable.
3Ease of operation
If a one-action opening mechanism is implemented, then ease of operation is improved, but manufacturing precision requirements worsen
Solution Approach 1:
The membrane is nested within the cap structure, with the membrane material injected into cavities or spaces within the cap. This nesting arrangement allows the one-action opening mechanism to function properly while managing manufacturing precision requirements through the structured integration of components during the two-stage manufacturing process.
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 allows for a seamless integration of the membrane and support parts with the packaging material, providing a reliable one-action opening and sealing mechanism that enhances product protection by eliminating the need for additional barriers and simplifying the manufacturing process.
Implementation Method 1
a membrane portion of the membrane part is mechanically connected to the support part
Implementation Method 2
the opening device, before it is opened the first time, should prevent microorganisms from accessing the product from outside
Data Source
AI summary
An opening device for a packaging container, the packaging container being formed from a packaging material having an upper side constituting the outside of the packaging container and a lower side constituting the inside of the container, the opening device including two operational parts, a preformed support part arranged on the upper side of the packaging material and a membrane part arranged on the lower side of the container and extending into openings of the support part such as to mechanically connect the two parts, and wherein the materials of the membrane part and the support part are thermally incompatible polymer materials.