Packaging Gas Discharge Valve With Adjustable Adhesive Opening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas discharge valves for packaging materials are prone to blockage, require complex structures, and suffer from irregular opening and closing due to varying food properties, leading to potential damage and contamination of packaged goods.
Innovation Solution
A gas discharge valve comprising a high-adhesiveness layer and a low-adhesiveness layer, where the low-adhesiveness layer inflates to open and reseals the discharge hole under pressure, ensuring smooth gas discharge and prevention of outside air ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex valve structure with valve housing, elastic disk, and valve cover is used, then gas discharge function is achieved, but device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent merges the valve body and sealing structure into a single integrated component made of elastic material. The elastic body itself forms the sealing surface and discharge hole, eliminating the need for separate valve housing, disk, and cover components. This integration significantly reduces device complexity while maintaining the gas discharge function.
Solution Approach 2:
The patent employs an elastic body made of flexible material that can deform under pressure to open the discharge hole and return to seal it when pressure releases. This flexible shell approach replaces the rigid complex valve structure with a simple elastic component that achieves the same function through elastic deformation.
2Reliability
If a minute hole is used for gas discharge, then gas discharge function is provided, but the hole is easily blocked by food properties
Solution Approach 1:
The patent uses a dynamic sealing mechanism where the elastic body deforms under gas pressure to open the discharge hole and automatically returns to seal it when pressure releases. This dynamic operation allows the hole to be larger than conventional minute holes, preventing blockage by food particles while maintaining effective sealing during normal conditions.
3Reliability
If oil is formed to block the minute hole, then gas discharge control is achieved, but the oil spreads or contaminates in high-temperature or high-pressure environments
Solution Approach 1:
The patent replaces the chemical blocking method (oil film) with a mechanical elastic sealing system. The elastic body physically seals the discharge hole through elastic deformation, eliminating the need for oil-based blocking mechanisms that can spread or contaminate under high-temperature or high-pressure conditions.
4Adaptability or versatility
If adhesive strength of the low-adhesiveness layer is adjusted, then the degree of opening of the valve is adjusted, but manufacturing precision requirements increase
Solution Approach 1:
The patent adjusts the adhesive strength parameter of the low-adhesiveness layer to control valve opening degree. By varying the adhesive strength within a specific range (5-50 cP), the valve can be optimized for different food types and gas discharge requirements. This parameter-based adjustment provides versatility while maintaining manageable manufacturing precision requirements.
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 valve effectively discharges gas due to chemical changes in packaged foods while maintaining a stable packaged state, preventing contamination and degradation, with adjustable adhesiveness for varying food types and environments.
Implementation Method 1
the low-adhesiveness layer is configured to inflate under internal pressure in the packing material; and the low-adhesiveness is configured to re-seal the through-hole due to its inherent elasticity when the pressure is released
Implementation Method 2
a high-adhesiveness layer configured to be attached to an external surface of the packing material and to be adhered in a lengthwise direction of the high-adhesiveness layer to a portion of the external surface of the packing material
Data Source
Figure 1~2a
Figure 2b~2c
Figure 2d~3a
AI summary
The present disclosure relates to a check valve for discharging gas within a sealed container and, particularly, to a gas discharge valve for a packaging material. The gas discharge valve for a packaging material is a valve for a packaging material, the valve serving to discharge in a single direction gas occurring within a sealed container and prevent introduction of outside gas. The gas discharge valve includes: a high-adhesiveness layer attached to an external surface of the packing material and is adhered in a lengthwise direction to a portion of the external surface of the packing material in the vicinity of the through-hole; and a low-adhesiveness layer formed inside the high-adhesiveness layer and adhered in such a manner to cover a top opening of the through-hole. A width of each of the high-adhesiveness layer and the low-adhesiveness layer or an adhesive strength of the low-adhesiveness layer is adjusted, and thus the degree of opening of the valve is adjusted suitably for contents accommodated within the packing material.