Folded Sealed Bag Structure for Strong Sealing With Less Material
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Solution Overview
Problem
Existing sealed bags face issues with excessive material use, insufficient sealing performance, complex manufacturing processes, poor user experience, and structural instability, leading to deformation, breakage, and leakage, which affect portability, safety, and production efficiency.
Innovation Solution
A folding process for sealed bags involving preset folding baselines, plastic sealing, and side pressing to form symmetrical closings, ensuring balanced capacity and quality, with thermocompression parameters optimized for sealing strength and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional sealed bag design is used, then manufacturing is simple, but material use is excessive and sealing performance is insufficient
Solution Approach 1:
The sealed bag is divided into multiple functional zones including a body portion, a first closing portion with first and second sides, and a second closing portion. This segmentation allows each zone to be optimized independently for material efficiency and sealing performance, reducing overall material use while maintaining reliable sealing through specialized design in each segment.
Solution Approach 2:
Different regions of the sealed bag are given different structural qualities - the body portion has one configuration while the closing portions have reinforced structures with overlapping layers and specific folding patterns. This local quality enhancement ensures strong sealing performance at critical areas without requiring excessive material throughout the entire bag.
2Stability of the object's composition
If traditional closing design is used, then structure is simple, but the bag deforms or breaks during use affecting stability
Solution Approach 1:
The first closing portion has a asymmetric design where the first side includes a folded structure that overlaps with the body portion, while the second side has a different configuration. This asymmetric structure distributes stress unevenly to prevent deformation and breakage, enhancing stability without requiring symmetric reinforcement throughout.
Solution Approach 2:
The closing portions are pre-formed with folded structures and overlapping layers during manufacturing. These preliminary structural actions create inherent stability that prevents deformation during use, eliminating the need for complex reinforcement additions later.
3Productivity
If partial sealing is used, then production is faster, but material waste increases and portability decreases
Solution Approach 1:
The sealed bag features a dynamic closing mechanism where the first and second closing portions can be selectively sealed or unsealed. This allows partial sealing for quick production cycles when needed, while the design ensures that when fully sealed, material waste is minimized through efficient edge utilization and no excess material is required for the closing structures.
4Reliability
If complex opening and closing design is used, then sealing performance improves, but user experience deteriorates
Solution Approach 1:
The complex sealing function is extracted into dedicated closing portions that are structurally integrated but functionally separate from the body. The first closing portion handles one sealing function while the second closing portion handles another, allowing each to be optimized for reliability while maintaining simple, intuitive user interaction through distinct opening and closing actions.
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 process results in a compact, durable, and user-friendly sealed bag design that saves storage space, reduces costs, enhances portability, and improves production efficiency while ensuring strong sealing and structural integrity.
Implementation Method 1
performing a first plastic sealing on a gap between an overlapping area of the second folding portion and the first folding portion
Implementation Method 2
the thermocompression temperature is 100-350°C and the thermocompression pressure is 8-20 kg/dm2
Implementation Method 3
performing side pressing on the paper roll along a first side pressing line preset on the paper roll so that the paper roll is embedded to form a first closing
Implementation Method 4
fully pressing the paper roll to remove air so that the projection of the third folding line falls on the first folding line
Data Source
Figure 1~2
Figure 3~5
AI summary
The present invention discloses a sealed bag based on a folding process and a processing method thereof, the method including presetting a folding baseline on an upper surface of a tiled base paper piece, and performing a first plastic sealing on a gap between an overlapping area of the second folding portion and the first folding portion so as to form a paper roll with two ends open and side surfaces enclosed; supporting the paper roll so as to perform side pressing on the paper roll along a first side pressing line preset on the paper roll so that the paper roll is embedded to form a first closing and a third folding line, wherein the area between the first folding line and the first side pressing line serves as a bottom surface of the first closing, and the area between the first side pressing line and the third folding line serves as a top surface of the first closing; plastically sealing the bottom opening of the fully pressed paper roll according to a preset bottom folding line to form a finished sealed bag. With a compact structure, the closing design effectively takes into account the capacity and quality of the sealed bag.