Single-Dose Package Opening Structure for Large Product Sizes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sealed single-dose packages for large sizes are difficult to open due to resistance from the large amount of product, and they are typically made from plastics, posing challenges in disposal and recycling.
Innovation Solution
A sealed single-dose package with a break opening design featuring a semi-rigid sheet and flexible sheet, including a narrow portion and protruding welds to form an hourglass-shaped pocket, facilitating easy bending and opening, and using predominantly paper or cellulose-based materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the package contains a large amount of product, then the package size and product capacity are improved, but the package becomes resistant to bending and difficult to open
Solution Approach 1:
The package is divided into two functional sheets: a semi-rigid sheet providing structural support and a flexible sheet enabling easy bending. This segmentation allows the package to maintain both large product capacity and ease of opening by distributing mechanical properties across different components.
Solution Approach 2:
Different regions of the package have different rigidity properties. The semi-rigid sheet provides localized structural support where needed, while the flexible sheet allows bending at the opening region. This local differentiation of mechanical properties resolves the contradiction between maintaining package integrity and enabling easy opening.
2Reliability
If the package is made from plastics material, then the sealing and product protection are improved, but the disposal and recycling become problematic
Solution Approach 1:
The package uses a composite structure combining a semi-rigid sheet (which can be paper or cardboard-based) with a flexible sheet. This composite material approach maintains the protective and sealing functions while reducing reliance on plastics, thereby improving recyclability and reducing environmental impact.
Solution Approach 2:
The invention changes the material composition parameters of the package, transitioning from predominantly plastic-based materials to a combination that includes paper or cardboard-based semi-rigid sheets. This parameter change maintains functional performance while improving environmental sustainability.
3Object-affected harmful factors
If the package uses paper or cardboard material, then the recyclability and environmental sustainability are improved, but the sealing and product protection may be compromised
Solution Approach 1:
The package employs a composite structure where a semi-rigid paper or cardboard sheet is combined with a flexible sheet that provides sealing capabilities. This composite approach allows the use of environmentally friendly materials while maintaining adequate product protection through the synergistic properties of the combined sheets.
Data Source
Figure 1~2
Figure 3
Figure 4~5b
AI summary
The sealed single-dose package according to the present invention comprises: a multi-layer semi-rigid sheet (2), a flexible sheet (4), superimposed and welded to the semi-rigid sheet (2) in order to form an inner pocket (6) for containing one dose of a product, an outer incision (8) in the semi-rigid sheet (2), adapted to guide, upon bending of the package, a breakage of the first sheet (2) to form an opening for the product contained in the pocket to escape (6). The package is characterized in that the pocket (6) has a narrow portion (61) aligned with said outer incision (8). This solution facilitates bending of the package when opening, as it makes a kind of division of the product content in the pocket. At the same time, the package 1 ensures a proper opening especially for large sizes, wherein the large amount of product could make bending for opening difficult.