Displaced Grip Opening Device for Package Material
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Solution Overview
Problem
Existing package containers for liquid foods face production speed and cost inefficiencies due to conventional opening devices that consume excessive material and time.
Innovation Solution
A package material blank with a multilayer structure featuring a cellulosic material and plastic laminate, incorporating a plastic opening device with a grip portion displaced from the surface, connected via a material bridge, allowing for high-force opening without ripping, and manufactured using injection molding techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional opening devices are used in high-volume packages, then package production speed and cost efficiency are improved, but the opening devices consume excessive material and time to manufacture
Solution Approach 1:
The opening device is designed as a simple, single-use plastic component that is inexpensive to manufacture and dispose of. The device uses a basic injection-molded structure with a grip portion and opening mechanism that requires minimal material while providing sufficient functionality for one-time use, thereby reducing material consumption compared to more complex conventional opening devices
Solution Approach 2:
The invention changes the material parameters by using a thin plastic laminate layer (5-20 micrometers) instead of thicker materials, and optimizes the opening device geometry to minimize material usage while maintaining structural integrity during the opening process, thus reducing overall material consumption
2Productivity
If conventional opening devices are used in high-volume packages, then package production speed and cost efficiency are improved, but the manufacturing time for each opening device increases
Solution Approach 1:
The opening device is designed as a simple, single-use plastic component that is inexpensive to manufacture and dispose of. The device uses a basic injection-molded structure with a grip portion and opening mechanism that requires minimal material while providing sufficient functionality for one-time use, thereby reducing material consumption compared to more complex conventional opening devices
Solution Approach 2:
The invention changes the material parameters by using a thin plastic laminate layer (5-20 micrometers) instead of thicker materials, and optimizes the opening device geometry to minimize material usage while maintaining structural integrity during the opening process, thus reducing overall material consumption
3Ease of manufacture
If the grip portion is attached to the surface of the package material, then manufacturing is simpler, but consumer grabbing and bending becomes difficult
Solution Approach 1:
The grip portion is designed to extend outward from the package surface in the third dimension, creating a protruding handle that is easily accessible to consumers. This dimensional extension allows the grip to be comfortably grabbed and bent by hand while maintaining a simple attachment structure to the package body, thus improving ease of operation without significantly complicating manufacturing
4Strength
If the opening device uses a material bridge penetrating through the material structure, then high forces can be exerted without ripping, but the structure becomes more complex
Solution Approach 1:
The opening device is segmented into distinct functional portions: a grip portion for consumer handling, a bridge portion that penetrates the package material to provide structural support and force transmission, and an attachment portion that connects to the package sealing. This segmentation allows each part to be optimized for its specific function while maintaining overall structural integrity and force resistance
Solution Approach 2:
The opening device utilizes composite construction by integrating the plastic opening device with the multilayer package material structure. The material bridge penetrates through different layers (cellulosic material and plastic laminate) to create a unified structure that combines the strengths of different materials, enabling high force resistance without requiring excessive complexity in the device design
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 solution enhances production efficiency by reducing material usage and time, while ensuring the opening device can withstand high forces without detachment, facilitating easier consumer access and improved stackability.
Implementation Method 1
Due to pressure being built up in said cavity or said recess, the melt penetrates through penetration area in the package material structure
Data Source
Figure 1~2
Figure 3~4B
Figure 5
AI summary
A package material blank comprises a plastic opening de- vice, having a first portion on a first side and a second portion on a second side of the package material blank. The portions are connected with each other via a material bridge penetrating the blank. A grip portion is attached to a distal end of the first portion and dis- placed form the blank to facilitate easy grabbing for a consumer