Liquid Pouch Pour Channel Bonding With Grid Heating Elements
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Solution Overview
Problem
Existing pouches for holding liquids face challenges in manufacturing due to complex pour spout designs, which are costly and difficult to produce accurately, often requiring additional components like polymer blocks.
Innovation Solution
A method of manufacturing a pouch using a heating device with grid-like heating elements to locally bond front and back layers, forming a pour channel without additional components, allowing for precise control over liquid flow and easy, cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a polymer block is used to form the pour spout, then the pour channel can be accurately formed, but the manufacturing cost increases and device complexity increases
Solution Approach 1:
The patent merges the pour spout function directly into the pouch structure by bonding the front and back layers together to form the pour channel boundaries. This eliminates the need for separate polymer blocks or caps, reducing device complexity while maintaining manufacturing precision through controlled heat bonding at specific locations.
Solution Approach 2:
The patent extracts the closing element (cap or plug) from the pouch structure entirely. Instead of incorporating it as a separate component, the pour channel boundaries are formed directly by bonding the front and back layers, removing unnecessary complexity while preserving the essential pour channel function.
2Reliability
If a polymer block with closing element is used, then liquid flow can be controlled, but manufacturing cost increases
Solution Approach 1:
The patent combines the liquid flow control function directly into the pouch structure through heat-bonded boundaries forming the pour channel. This eliminates the need for separate polymer blocks and closing elements, reducing manufacturing cost while maintaining reliable liquid flow control through the bonded channel structure.
Solution Approach 2:
The patent replaces expensive, complex polymer blocks and closing elements with a simpler, more economical structure where the pour channel is formed by heat bonding the front and back layers. This disposable-like simplicity reduces manufacturing cost while achieving the necessary liquid flow control function.
3Device complexity
If a long narrow pour channel is formed by melting layers, then the pouch structure is simpler, but manufacturing precision decreases
Solution Approach 1:
The patent segments the heating process into multiple individually operable heating elements arranged in a grid. Each heating element can be independently controlled to bond specific portions of the front and back layers, allowing precise control over the pour channel boundaries while maintaining structural simplicity.
Solution Approach 2:
The patent applies local quality by selectively activating specific heating elements to bond only the portions of the front and back layers that define the pour channel boundaries. This localized bonding approach maintains structural simplicity while achieving high manufacturing precision through controlled local heating and bonding.
4Manufacturing precision
If multiple heating elements are used for pour channel bonding, then bonding precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the heating device into multiple individually operable heating elements arranged in a grid pattern. This segmentation allows precise control over bonding locations while keeping each individual heating element simple in design, achieving high bonding accuracy without excessive device complexity.
Solution Approach 2:
The patent replaces complex mechanical bonding systems with a thermal field-based approach using electrically controlled heating elements. This substitution simplifies the overall device complexity by using electrical control of heating elements rather than complex mechanical bonding mechanisms, while achieving high bonding precision through controlled thermal energy application.
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 method enables the creation of a highly accurate pour channel with controlled liquid outflow, reducing manufacturing costs and complexity while enabling sustainable packaging design.
Implementation Method 1
operating the heating device such that heating elements, of the plurality of heating elements, which are required for creating the boundaries are operated and thereby heated
Implementation Method 2
bringing the heating surface into contact with the front or back layer, so as to locally bond together the front layer and the back layer so as to form the bonds defining the boundaries of the pour channel
Data Source
AI summary
The invention provides a method of manufacturing a pouch for holding therein a liquid, comprising providing a front and back layer, locally bonding them together to create an inner space, forming a pour channel, by locally bonding the layers together to form bonds defining boundaries of the pour channel, wherein the forming of the pour channel is carried out by providing a heating device having a plurality of heating elements arranged in a grid-like manner, forming a heating surface, each of the heating elements being individually operable, operating the heating device such that heating elements which are required for creating the boundaries are operated and thereby heated, and bringing the heating surface into contact with the front layer or back layer, so as to locally bond together the front layer and the back layer so as to form the bonds defining the boundaries of the pour channel.