Bag Wall Connection via Openings and Inversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bag manufacturing processes are complex and result in bags that are difficult to produce, with the second wall protruding beyond the first wall, requiring additional materials for sealing that do not contribute to the connection.
Innovation Solution
A bag design where the end edges of the first and second walls lie one above the other, allowing for a simpler structure and production process using a cutting tool to create a straight cut edge, and incorporating openings in the first wall for the second wall to connect through, enhancing durability and eliminating the need for protrusion and additional sealing materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the second wall extends beyond the first wall to enable direct contact between the second wall and the outer surface of the first wall, then the connection between walls is improved, but the production complexity increases and additional sealing materials are required
Solution Approach 1:
Instead of having the second wall extend beyond the first wall to achieve contact, the invention inverts the approach by having the end edges of both walls lie one above the other and connecting them through openings in the first wall. This eliminates the need for the second wall to protrude and removes the requirement for additional sealing materials, thereby simplifying production while maintaining connection durability.
Solution Approach 2:
The invention introduces openings (porous structure) in the first wall through which the second wall connects to the first wall. This porous approach enables direct connection without requiring the second wall to extend beyond the first wall, eliminating the need for additional sealing materials and simplifying the production process while ensuring reliable connection.
2Reliability
If the second wall extends beyond the first wall, then sealing can be achieved, but material usage increases and production becomes more complex
Solution Approach 1:
The invention inverts the conventional approach by not extending the second wall beyond the first wall. Instead, both walls have end edges that lie one above the other, and connection is achieved through openings in the first wall. This eliminates waste material and reduces production complexity while maintaining effective sealing through the connection structure.
Solution Approach 2:
By introducing openings in the first wall, the invention creates a porous connection structure that allows the second wall to connect directly without extending beyond the first wall. This achieves sealing functionality while optimizing material usage and eliminating the need for additional sealing materials.
3Ease of manufacture
If a cutting tool is used to create a straight cut edge, then production is simplified, but the tube separation process must be modified
Solution Approach 1:
The invention merges the cutting operation with the tube separation process. A single cutting tool creates both the straight cut edge for quality appearance and simultaneously separates the tube into individual bag sections. This combined approach simplifies production by eliminating separate operations while the cutting tool is designed to perform both functions.
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The invention relates to a bag (300) having a first wall (110) and a second wall (111), which are connected to each other via side edges so as to provide a filling chamber, and two ends, a base (400) being located at one end and an opening being provided at the other end, via which opening the filling chamber can be accessed, the base comprising a partial area of the first wall and a partial area of the second wall, and both partial areas being folded over onto the first wall about a shared fold line. The partial area of the first wall comprises openings (203) through which parts of the partial area of the second wall directly contact the first wall and/or are connected thereto.