Sealed Single-Dose Package Break Opening Mechanism
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Solution Overview
Problem
Existing single-dose packages made from plastic materials pose significant environmental disposal challenges due to their widespread use and the growing consumer demand for sustainable packaging solutions.
Innovation Solution
A sealed single-dose package with a break opening mechanism is designed using a semi-rigid sheet and flexible laminate structure, primarily composed of cellulose-based materials, incorporating incisions and weakenings to facilitate controlled opening and recyclability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the package is made from plastic materials to ensure sealing and durability, then the package structure and function are reliable, but the environmental disposal problem worsens and recyclability is reduced
Solution Approach 1:
The package employs a composite structure combining a semi-rigid sheet (paperboard or cardboard) with a flexible sheet (laminate or plastic film). The semi-rigid sheet provides structural integrity and can be recycled with paper, while the flexible sheet provides sealing and barrier properties. This composite approach allows the package to maintain reliability while improving recyclability through material differentiation.
Solution Approach 2:
The package is divided into two distinct sheets (semi-rigid and flexible) that can be separated. The semi-rigid sheet forms the main body and can be disposed of with paper waste, while the flexible sheet containing the sealed product can be handled separately. This segmentation enables differentiated disposal and reduces contamination in recycling streams.
2Reliability
If the package uses a sealed structure to protect the product, then product protection is improved, but the opening mechanism complexity increases
Solution Approach 1:
The flexible sheet is pre-formed with an incision or weakening in the sealed edge before the packaging process. This preliminary preparation allows the package to be opened easily by the consumer without requiring complex tools or mechanisms, while the seal remains intact during transport and storage to protect the product.
Solution Approach 2:
The flexible sheet (made from laminate or plastic film) serves as both the sealing barrier and the opening mechanism. The flexibility of this thin film allows it to be easily torn or peeled along pre-scored lines, providing simple one-handed opening while maintaining product protection through the sealed structure.
3Ease of operation
If the package is designed for easy opening with one hand, then ease of operation is improved, but the structural complexity increases
Solution Approach 1:
The flexible sheet is pre-formed with an incision or weakening in the sealed edge before the packaging process. This preliminary preparation allows the package to be opened easily by the consumer without requiring complex tools or mechanisms, while the seal remains intact during transport and storage to protect the product.
Solution Approach 2:
The flexible sheet (made from laminate or plastic film) serves as both the sealing barrier and the opening mechanism. The flexibility of this thin film allows it to be easily torn or peeled along pre-scored lines, providing simple one-handed opening while maintaining product protection through the sealed structure.
Data Source
Figure 1~2
Figure 3
Figure 4a~4c
AI summary
A sealed single-dose package (1) comprises a semi-rigid sheet (2) and a flexible sheet (4) which pierce a pocket (6) for a dose of a product. On the rear face (2a) of the semi-rigid sheet (2) there is an outer incision (8) for breaking the package open. The semi-rigid sheet (2) comprises a supporting layer (10) having said rear face (2a) made of paper, cardboard or other cellulose-based material.