Dual Compartment Pouch Pressure-Openable Non-Seamed Line
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Solution Overview
Problem
Conventional dual compartment pouches require significant force to open, leading to uneven pressure distribution and potential leakage when trying to mix contents with different viscosities, making them inconvenient to use.
Innovation Solution
A dual compartment pouch with a pressure-openable non-seamed line featuring a pressurized opening with protrusions and depressions, a cutting line, and buffers to control pressure and prevent leakage, allowing easy opening with minimal force and efficient mixing of contents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional bonding line partitioned in a sawtooth shape is used to divide the receiving portions, then the contents can be separately contained until use, but significant force is required to open the bonding line and pressure distribution becomes uneven
Solution Approach 1:
The bonding line is designed with a weak portion having reduced bonded area and weaker adhesiveness at a specific location, creating local quality variation. This allows the bonding line to maintain strength in most areas for reliable containment, while the weak portion opens easily with minimal force, resolving the contradiction between reliable separate containment and ease of opening.
2Ease of operation
If pressure is applied strongly to open the bonding line, then the receiving portions can be opened, but leakage occurs and contents may be spoiled
Solution Approach 1:
The weak portion with reduced bonded area creates a controlled opening point that directs pressure locally rather than distributing it uniformly throughout the bonding line. This prevents excessive pressure that causes leakage while still enabling easy opening, thus resolving the contradiction between ease of opening and prevention of harmful leakage.
3Strength
If the non-seamed lines are set to be very narrow, then the bonding line is stronger, but significant force is required to open; if set to be very wide, then opening is easier, but leakage occurs
Solution Approach 1:
The bonding line is designed with different bonded areas at different locations - a larger bonded area in most regions for strength, and a reduced bonded area at the weak portion for easy opening. This local quality variation resolves the contradiction between maintaining overall bonding strength and enabling easy opening with minimal force.
4Ease of operation
If uniform pressure distribution occurs when pressing the receiving portion, then the entire internal portion is affected, but the apex of the bonding line does not receive sufficient concentrated pressure to open
Solution Approach 1:
The weak portion with reduced bonded area creates a localized opening point that concentrates pressure effectively. When pressure is applied, it concentrates at the weak portion rather than distributing uniformly, enabling the apex to open with minimal force. This resolves the contradiction between ease of pressure application and effective pressure concentration.
Data Source
AI summary
Disclosed is a dual compartment pouch with a pressure-openable non-seamed line with a configuration in which: a specific portion of a bonding line forms a border of first and second receiving portions; a pressurized opening formed with a cross-section of protrusions and depressions closely attached to upper sides or lower sides of one of the first and second receiving portions having a sealed external portion along an external bonding line and partitioned by an internal bonding line is disposed; and a cutting line for defining a range within which the first receiving portion and the second receiving portion may be separated from a lower side in the center of the internal bonding line to a position that is near the pressurized opening.