Ventilated Coffee Bag With Bent Gas Chamber
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Solution Overview
Problem
Coffee-preserving bags face challenges in maintaining coffee quality due to oxygen intrusion and carbon dioxide buildup, leading to potential bag rupture and degradation, especially during rapid volume changes or external forces, which existing solutions do not adequately address in terms of strength and oxygen prevention.
Innovation Solution
A coffee-preserving bag body formed by a barrier film with a band-shaped joining region featuring a gas chamber and ventilation channels, including inner and outer gas flow passages, and a unique bent part design that enhances strength and gas flow resistance, allowing for effective carbon dioxide discharge and oxygen prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a check valve is attached to the bag to discharge carbon dioxide, then carbon dioxide discharge function is improved, but manufacturing complexity increases and cost increases
Solution Approach 1:
The patent extracts the carbon dioxide discharge function from a separate check valve component and integrates it directly into the bag body structure through a ventilation passage formed in the film, eliminating the need for external valve attachments and simplifying manufacturing
Solution Approach 2:
The patent merges the bag body structure with the ventilation function by forming a integrated ventilation passage directly in the film material, combining structural integrity with gas discharge capability in a single component
2Object-generated harmful factors
If a long ventilation passage is used to discharge carbon dioxide, then oxygen intrusion prevention is improved, but bag body strength decreases making it vulnerable to breaking
Solution Approach 1:
The patent introduces bent parts with specific curvature into the ventilation passage, creating a meandering path that increases passage length and resistance to oxygen flow while maintaining bag body structural strength through strategic placement of bends
3Object-generated harmful factors
If the ventilation passage is made longer to prevent oxygen intrusion, then oxygen prevention is improved, but the bag body becomes more susceptible to damage from external forces
Solution Approach 1:
The bent parts in the ventilation passage absorb and distribute external forces through their curved geometry, preventing stress concentration and reducing susceptibility to damage while maintaining the passage's length and oxygen prevention function
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 provides a robust coffee-preserving bag that effectively discharges carbon dioxide, prevents oxygen intrusion, and maintains strength against external forces and rapid volume changes, ensuring the quality and stability of coffee over time.
Implementation Method 1
an inner gas flow passage communicating between the gas chamber and an internal space of the bag body; and an outer gas flow passage communicating between the gas chamber and an external space of the bag body, whereby a ventilation channel communicating between an inside and an outside of the bag body is composed of the inner gas flow passage
Implementation Method 2
a bent part which is a joining part between the transverse part and the heightwise part
Data Source
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AI summary
Provided are a coffee-preserving bag body capable of, in addition to discharging carbon dioxide and suppressing intrusion of oxygen, having sufficient strength, and preventing inflow of outside air due to a rapid volume change, and others. According to the present invention, there is provided a coffee-preserving bag body 10 for preserving 60 g to 2000 g of coffee, wherein the coffee-preserving bag body 10 comprises a band-shaped joining region 16 in which two ends 12a of a film are mutually overlapped and joined together, wherein the band-shaped joining region is internally provided with: a gas chamber 26 which is a space shaped as approximately rectangular waves, the gas chamber 26 being formed by leaving the film unjoined to extend along the joined ends of the film, and sealed at both ends thereof; an inner gas flow passage 28 communicating between the gas chamber and an internal space of the bag body; and an outer gas flow passage 30 communicating between the gas chamber and an external space of the bag body, such that they form a ventilation channel 24, wherein the gas chamber comprises: an approximately linear-shaped transverse part 36 extending in a direction along which the approximately rectangular waves extend approximately parallel to the joined ends of the film; a longwise part 38 extending in a direction connecting the internal space and the external space, at an angle of 40 degrees to 120 degrees with respect to the transverse part; and a bent part 40 which is a joining part between the transverse part and the heightwise part.