Butt-Seamed Package Bag with Segmented Pouring Path
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Solution Overview
Problem
Conventional methods for pouring liquid materials from flexible package bags require significant force, are difficult for children and elderly individuals, and often result in unintended pouring or the need for cutting tools, leading to disposal issues.
Innovation Solution
A butt-seamed package bag with a back-lined joint portion and easily separable sections along the pouring path, allowing for easy pouring without tearing or cutting, using a folding mechanism to separate the path under low pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the joint portion of the package bag is torn by pinching with fingers to pour liquid material, then the pouring can be achieved, but a considerably large force is required making it extremely difficult for children and elders with weak pinching force
Solution Approach 1:
The joint portion is segmented into two distinct regions: a strong seal portion for maintaining package integrity and a weak portion with reduced adhesion for easy tearing. This segmentation allows the package to resist opening during storage while enabling easy tearing during use with minimal force.
Solution Approach 2:
Different regions of the joint portion are given different adhesion properties. The strong seal portion maintains high adhesion strength for package security, while the weak portion has deliberately reduced adhesion strength to facilitate easy tearing by users with weak pinching force.
2Ease of operation
If the bag is pinched up to the filling space to strengthen the pinching force, then easier pouring is achieved, but the liquid packed material is frequently poured to undesired portions
Solution Approach 1:
The tearing function is extracted from the main body of the package and concentrated into a specific weak portion of the joint. This allows users to tear precisely at the intended pouring location without needing to pinch the entire filling space, thereby maintaining pouring position accuracy while reducing the required pinching force.
3Ease of operation
If the corner of the package bag is cut out with scissors to pour, then pouring can be achieved, but the use of tools is unavoidable and cut-off pieces must be disposed of to avoid incorporating into foods
Solution Approach 1:
The package bag provides its own opening mechanism through the weak portion that can be torn by hand without requiring external tools like scissors. The weak portion is designed to separate cleanly, eliminating the need for cutting tools and avoiding the generation of hazardous cut-off pieces that would require disposal.
4Ease of operation
If a weak portion with reduced adhesion strength is provided in the joint portion, then easy separation is achieved, but the joint strength at that location is reduced
Solution Approach 1:
The joint is divided into strong seal portions that maintain high adhesion strength for package integrity and weak portions with reduced adhesion strength for easy separation. The weak portions are strategically positioned away from the main sealing areas, ensuring that overall package strength is maintained while enabling easy opening at specific locations.
Data Source
AI summary
A rectangular, flexible butt-seamed package bag and a method for using the same is provided in which the pouring of a single type of a liquid packing material filled and packed in the filling space for the packed material from the package bag can be easily performed. A butt-seamed package bag formed by joining both side portions of a sealant layer of a laminate film for packing to each other at a butt state and joining bottom portions or top portions thereof to define a filling space for a single packed material, characterized in that a pouring path for the packed material is disposed in a middle part of a butt-seamed joint portion in an extending direction thereof, and at least a part of the pouring path is provided with an easily separable portion having a joint strength relatively lower than that of the butt-seamed joint portion.