Package Bag Pouring Path and Easy-Peelable Seal Design
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Solution Overview
Problem
Conventional package bags with thin laminate films struggle to accurately control the pouring direction and quantity of liquid materials, leading to unintended pouring and contamination, especially for individuals with weak nipping force, as the easy-peelable portion can be bent or oscillated during opening, causing the liquid to flow into unexpected places.
Innovation Solution
A package bag design featuring a back-lined portion with a self-supporting stable portion and a pouring path, sealed with edge seal parts, and equipped with first and second easy-peelable portions, where the first easy-peelable portion is preferentially peeled to direct the liquid into the stable portion, and the second portion is peeled to guide it through a narrowing pouring path to the pouring port, allowing controlled pouring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the package bag is made from a thin packaging laminate film, then the ease of manufacture and flexibility are improved, but the back-lined joint portion is bent or oscillated by pouring pressure causing inaccurate pouring direction
Solution Approach 1:
The back-lined joint portion is divided into multiple sealed regions (first sealed region, second sealed region, third sealed region) separated by partition walls. This segmentation provides structural support to prevent bending and oscillation while maintaining the use of thin flexible laminate film material.
Solution Approach 2:
The patent changes the structural parameters of the back-lined joint portion by introducing multiple seal parts and partition walls that create separate chambers. This structural parameter change reinforces the thin film material to resist deformation under pouring pressure while maintaining flexibility for easy opening.
2Ease of operation
If the easy-peelable portion is opened by pushing with fingers, then the ease of operation is improved, but the liquid packing material is poured into an unintended place due to inaccurate tearing direction
Solution Approach 1:
The opening mechanism is segmented into two distinct stages: first easy-peelable portions that separate to open the package, and second easy-peelable portions that control the pouring path. This segmentation allows independent control of opening and pouring directions.
Solution Approach 2:
The pouring path acts as an intermediary structure that guides the liquid from the filling space through a controlled path to the pouring port. This intermediary structure ensures accurate pouring direction even when opened by simple finger pushing.
3Productivity
If the package bag pours liquid from the pouring port at the same time of opening the easy-peelable portion, then the productivity is improved, but the pouring quantity cannot be adjusted causing great amount of liquid to be poured unintendedly
Solution Approach 1:
The sealing structure is segmented into multiple independent seal parts (first sealed region, second sealed region, third sealed region) that can be broken in sequence. This allows the opening process to be separated into initial opening and controlled pouring stages, enabling quantity control while maintaining fast opening capability.
Solution Approach 2:
The package bag transitions from a completely sealed state to a controlled pouring state through dynamic breaking of seal parts. The user can control the dynamics of opening by breaking seals in sequence, allowing adjustment of pouring quantity while maintaining high productivity through the ease of sequential opening.
Data Source
AI summary
A package bag made by a packaging laminate film and provided midway between both side portions with a back-lined portion and a filling space of a liquid packing material, wherein the back-lined portion is sealed on its peripheral edge with an outer edge seal part, an inner edge seal part, an upper edge seal part and a lower edge seal part, while an internal side of these seal parts is defined by a partition wall of these seal parts into a self-supporting stable portion and a pouring path communicating to a pouring port disposed in the outer edge seal part; and the inner edge seal part is provided with a first easy-peelable portion separating the self-supporting stable portion and the filling space and a second easy-peelable portion separating the pouring path and the filling space, and the first easy-peelable portion is preferentially peeled by pushing the filling space.