Pyramidal Snack Pouch With Guided Tear and Bowl-Shaped Opening
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Solution Overview
Problem
Existing food pouches, particularly those in tetrahedral or pyramidal shapes, lack an efficient and user-friendly mechanism for accessing non-liquid contents like seeds or nuts, often requiring additional components like rip-cords or generating unwanted noise and rustling during use.
Innovation Solution
A tetrahedral-shaped pouch design with a longitudinal sealing edge and a notch in one lateral edge allows for easy opening by tearing along a predictable line, forming a bowl-shaped receptacle, using multi-layered materials like aluminum for stiffness and guided tearing, and a packaging machine with electrically heated jaws for production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tetrahedral pouch is designed without additional opening mechanisms, then the structure remains simple and material waste is minimized, but accessing non-liquid contents becomes difficult and requires excessive force
Solution Approach 1:
The sealing edge is segmented into a first sealing edge and a second sealing edge that are offset from each other. This segmentation creates an asymmetric structure that guides the tearing force along a predetermined path, enabling easy opening without requiring additional mechanical components like rip-cords or zippers.
Solution Approach 2:
The packaging material is pre-formed with an asymmetric offset between the first and second sealing edges during the sealing process. This preliminary structural preparation creates a built-in tearing guide that activates automatically when the user applies force to open the pouch, eliminating the need for post-manufacturing addition of opening mechanisms.
2Object-affected harmful factors
If conventional tearing methods are used without guided paths, then the opening mechanism remains simple, but unwanted noise and rustling occur during use
Solution Approach 1:
The packaging material exhibits different local properties along the sealing edges - the asymmetric offset creates a specific local geometry that concentrates and guides the tearing force. This localized structural feature ensures that tearing occurs along a controlled path with minimal noise and rustling, while the rest of the pouch structure remains intact and quiet.
3Ease of operation
If the pouch is opened without forming a bowl-shaped receptacle, then the opening process is simpler, but access to contents like seeds or nuts becomes inconvenient
Solution Approach 1:
The asymmetric offset between the first and second sealing edges creates an asymmetric tearing path that naturally forms a bowl-shaped receptacle when the pouch is opened. This asymmetric geometry is built into the sealing structure itself, allowing the pouch to open in a single tearing motion while automatically creating the convenient bowl shape for accessing contents, without requiring additional forming steps.
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 provides a stable, quiet, and easy access to contents, maintaining freshness and minimizing material waste by allowing a guided tear that forms a bowl-shaped receptacle, suitable for snacks like sunflower seeds.
Implementation Method 1
a packaging machine with electrically heated jaws for production
Implementation Method 2
using multi-layered materials like aluminum for stiffness
Implementation Method 3
allows for easy opening by tearing along a predictable line
Data Source
AI summary
A method for producing pyramidal shaped pouches and filling them with a food product is disclosed. The method includes the steps of providing a multi-layered heat sealable material; forming a tube from the material via a forming shoulder and a metallic forming tube on which the material is wrapped; sealing along a longitudinal direction where the material overlaps to form a longitudinal sealing; sealing across the tube to generate a first sealing edge and forming an opening; filling via the metallic forming tube the food product in the opening; and sealing across the tube to close the opening and generate a second sealing edge. The method further includes creating a notch in the first sealing edge. A tear area extends substantially along the longitudinal sealing. Adjacent pouches are cut to be separated, each filled with the food product.