Partial Easy-Peel Pouch Sealing for Reliable, Low-Cost Opening
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Solution Overview
Problem
Conventional packaging pouches face issues such as difficulty in opening due to thickness, moisture, and irregular cuts, leading to spillage and inconvenience in disposal, while easy-peel pouches with full-film sealing incur high production costs and risk bursting under impact.
Innovation Solution
A packaging pouch design with an easy-peel film sealed only to the opening area, featuring a sealing portion on the edges, a designated opening portion, and an opening handle, allowing easy manual opening and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the easy-peel film is sealed to all sides of the front and rear films, then the pouch maintains structural integrity, but production costs increase
Solution Approach 1:
The pouch sealing is segmented into two distinct regions: a full-perimeter sealing portion that provides structural integrity, and a partial easy-peel sealing region that enables easy opening. This segmentation allows the pouch to maintain strength where needed while reducing material and manufacturing costs in the opening area.
Solution Approach 2:
Different sealing qualities are applied to different regions of the pouch. The sealing portion uses strong, complete sealing for structural support, while the easy-peel portion uses reduced-strength sealing that allows manual separation. This local differentiation optimizes both structural integrity and ease of opening while controlling costs.
2Reliability
If the easy-peel film is sealed to all sides of the front and rear films, then the pouch maintains structural integrity, but the pouch may burst under impact load
Solution Approach 1:
The sealing structure is divided into a strong full-perimeter sealing portion and a weaker easy-peel portion. The full-perimeter sealing provides the structural framework that resists impact loads, while the easy-peel portion is designed to fail safely under controlled conditions, preventing catastrophic bursting.
Solution Approach 2:
Different mechanical properties are assigned to different sealing regions. The sealing portion has high strength and rigidity for impact resistance, while the easy-peel portion has reduced adhesion strength to allow manual opening. This local property differentiation resolves the contradiction between structural integrity and impact resistance.
3Ease of operation
If a pouch with a notch is used, then opening is possible, but more force is required and opening becomes difficult due to slipping
Solution Approach 1:
The difficult-to-open notch feature is extracted and replaced with an easy-peel film portion that provides a larger, more ergonomic opening area. This extraction eliminates the need for concentrated force at a small notch point and prevents slipping by providing a broader gripping surface.
Solution Approach 2:
Instead of creating a notch that requires forceful insertion and risks slipping, the invention inverts the approach by creating a sealed easy-peel portion that opens through controlled adhesion failure. This inversion transforms the opening mechanism from a force-intensive notch insertion to a gentle peeling action.
4Ease of operation
If a pouch with a notch is cut to open, then the pouch can be opened, but the cut surface becomes irregular making it difficult to discharge contents
Solution Approach 1:
The cutting operation is extracted and replaced by controlled adhesion failure of the easy-peel film. This eliminates the irregular cut surfaces that result from mechanical cutting, as the easy-peel portion separates cleanly along the sealed edge, maintaining a regular shape that facilitates content discharge.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The pouch maintains structural integrity, prevents bursting, and ensures easy, single-disposal convenience, while maintaining the original shape for resealing, with a sufficient grip for zippers, reducing contamination and preserving contents.
Implementation Method 1
an easy-peel film heat-sealed to inner surfaces of the front and rear films on the opening portion
Data Source
AI summary
Provided is a partial easy-peel pouch, and more particularly, a packaging pouch having an easy-peel film sealed only to an area that requires opening. According to embodiments of the present disclosure, the partial easy-peel pouch includes a sealing portion provided on right and left edges of front and rear films, an opening portion having a designated area on top of the front and rear films, an easy-peel film heat-sealed to inner surfaces of the front and rear films on the opening portion, and an opening handle provided on both corners or top of the opening portion.