Packaging Laminate Opening Device With Material Bridge
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Solution Overview
Problem
Current packaging materials for single-use disposable containers of liquid foods, such as paperboard or carton, lack reliable and cost-effective opening mechanisms for aseptic packaging, particularly for long-term ambient storage.
Innovation Solution
A packaging material laminate structure with a plastic opening device and pouring support, featuring attenuated areas and weakened lines, where the opening device and pouring support are connected via material bridges formed through injection moulding, allowing for easy opening and robust pouring without compromising the container's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a plastic opening device is integrated into the packaging material laminate, then the opening mechanism becomes more reliable and easier to operate, but the manufacturing complexity and cost increase
Solution Approach 1:
The opening device is merged with the packaging material laminate by injecting plastic material through the attenuated area to form a material bridge that connects the first portion on the first side with the second portion on the second side. This integration combines the opening device with the existing laminate structure, improving ease of operation while avoiding the complexity of separate attachment mechanisms.
Solution Approach 2:
The attenuated area is pre-formed in the packaging material laminate before the opening device is injected. This preliminary preparation creates a designated pathway that guides the plastic material during injection, ensuring proper formation of the material bridge and reducing manufacturing complexity.
2Strength
If the plastic material bridge penetrates through the attenuated area, then the opening device achieves strong structural connection, but the bulk layer integrity is compromised
Solution Approach 1:
The packaging material laminate has a localized attenuated area where the bulk layer is reduced or removed, creating a zone with different properties from the rest of the laminate. This local modification allows the plastic material to penetrate and form a strong material bridge connection without compromising the integrity of the bulk layer in other critical areas.
Solution Approach 2:
The laminate structure is segmented into different zones: the attenuated area where penetration occurs and the bulk layer areas that maintain integrity. This segmentation allows the opening device to achieve strong connection in the attenuated zone while preserving the stability and composition of the bulk layer segments.
3Adaptability or versatility
If the pouring support is integrated with the opening device, then the pouring function is enhanced, but the device complexity increases
Solution Approach 1:
The plastic opening device is designed to serve multiple functions: it provides the opening mechanism by connecting the first and second portions through the material bridge, and simultaneously integrates the pouring support function. This multi-functionality enhances the versatility of the package while avoiding the complexity of separate opening and pouring devices.
Solution Approach 2:
The pouring support is merged with the opening device as an integrated structure. The plastic material forming the opening device also forms the pouring support, combining two functional elements into one unified component that reduces overall device complexity while maintaining versatility.
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 provides a cheap and efficient opening mechanism while maintaining the package's integrity for liquid contents, reducing spoilage and enhancing the user experience through a designed rupture mechanism and pouring support that minimizes material bridge intrusion into the bulk layer.
Implementation Method 1
Such bridge as well as the first and second portion can be formed by moulding and particular by injection moulding, wherein the molten material forming the first and second portion penetrates through the attenuated area thereby forming the bridge
Data Source
Figure 1~1B
Figure 2
Figure 3~4
AI summary
A packaging material laminate structure comprises a first side, a second side opposite the first side and an attenuated area. An opening device is arranged with a first portion on the first side, with a second portion on the second side and with a first material bridge connecting both portions through the attenuated area. A consumer opening area is defined on the packaging material laminate and arranged such that packaging material laminate is ruptured on using the plastic opening device to open the consumer opening area. A pouring support device adjacent to the consumer opening area is having a pouring portion arranged on the first side and a support portion on the second side, wherein the pouring portion and the support portion are connected via a second material bridge through the attenuated area.