Pouch Package Non-Overlapping Tear Lines for Straw Insertion
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Solution Overview
Problem
Existing pouch type packages for fluid contents with integrated straws face challenges in efficient and leak-proof straw insertion, often requiring complex tear lines or removal of top portions, which can lead to user difficulties and potential leakage.
Innovation Solution
A pouch type package design featuring a top corner with non-overlapping tear lines on opposite flexible side walls, allowing for guided tearing to expose an inner surface for easy straw insertion, combined with a restricted flow passage for leak-tight insertion, and optionally a supported straw for improved usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If overlapping tear lines are used in both side walls, then the tearing guidance is complete, but no inner surface is exposed making straw insertion difficult
Solution Approach 1:
The tear lines are segmented between the two side walls rather than overlapping continuously. The first tear line in the first side wall and the second tear line in the second side wall are arranged to be at least partly non-overlapping, creating a gap that exposes the inner surface while still providing tear guidance through the distributed tear line configuration
Solution Approach 2:
The solution moves from a single-plane overlapping tear line configuration to a multi-dimensional arrangement where tear lines are distributed across two different side walls. This spatial distribution creates the exposed inner surface area while maintaining tear guidance through the combined tear line system
2Reliability
If complex tear line configurations are used, then tearing guidance is improved, but device complexity increases
Solution Approach 1:
The tear line guidance function is segmented between two separate side walls rather than requiring a complex multi-line configuration in a single wall. Each side wall has its own simple tear line, and their combined non-overlapping arrangement provides adequate guidance while maintaining simplicity
Solution Approach 2:
The tear line configuration extracts the guidance function from a complex overlapping pattern and distributes it across two simpler, non-overlapping lines on separate walls, reducing overall structural complexity while maintaining guidance reliability
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
A pouch type package for fluid contents, comprising two opposite flexible side walls (2 ,3) forming a top corner portion (6) which is provided with an opening initiation (7) along which a tab (8) is to be separated for opening of the package. The opening initiation (7) comprises a first tear line (12) provided in a first (2) of the two opposite flexible side walls (2, 3) and a second tear line (3) provided in a second (3) of the two opposite flexible side walls (2, 3). The first and second tear lines (12, 13) extend in an at least partly non-overlapping manner such that a wall section (18) of an inner surface of the first side wall (2) is exposed after separation of the tab (8). The invention also relates to a method of adaptation of a pouch type package (1) for enabling insertion of a straw (20).