Folded Packaging Container Sealing Structure
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Solution Overview
Problem
Existing folded packaging containers face issues with non-tight sealing, deformation, and instability due to stress concentration and folded angles, which affect hygiene and health, and require complex processes for sealing and shaping.
Innovation Solution
A folded packaging container structure with opposing bonding directions for side sealing parts and a crease line system that allows for perpendicular or oblique crease lines, enabling simultaneous or separate sealing of side and bottom sealing parts, and a process involving specific folding and bonding stations to ensure tight sealing and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive strips or PP/PE strips are used to bond the container after filling, then the container can be sealed, but the hygiene and health of beverages are affected
Solution Approach 1:
The patent removes the adhesive strips or PP/PE strips from the bonding process, extracting the harmful element that compromises hygiene. Instead, the container walls themselves are folded and bonded directly, eliminating the need for intermediate bonding materials that could contaminate the beverage.
Solution Approach 2:
The container structure performs its own sealing function through the folding and bonding of its own walls. The side wall and bottom wall are folded and bonded together to form the sealing structure, making the container self-sufficient without requiring external adhesive materials.
2Device complexity
If the bottom connection part and side connection part are located on the same vertical plane, then the structure is simplified, but the container deforms and seals non-tightly due to stress concentration
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement to a three-dimensional spatial arrangement. The bottom connection part and side connection part are positioned on different vertical planes, creating a three-dimensional folding structure that distributes stress more evenly and prevents deformation while maintaining sealing tightness.
3Reliability
If a middle sealing side is added to improve sealing, then sealing performance improves, but the container cannot stand stably and the bottom part needs complex shaping
Solution Approach 1:
The sealing function is segmented into distinct parts: the side sealing part formed by folding the side wall, and the bottom sealing part formed by folding the bottom wall. This segmentation allows each part to perform its specific sealing function independently, achieving stable sealing without requiring complex bottom shaping.
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 durable, safe, and reliable packaging container with improved sealing performance, stability, and simplified processes, reducing reject rates and ensuring the container's regular shape and hygiene.
Implementation Method 1
a bonding machine, configured for bonding the first side sealing part to an outer side of the first side surface, and bonding the second side sealing part to an outer side of the second side surface
Implementation Method 2
a pressing machine, configured for pressing the first side sealing part and the second side sealing part
Implementation Method 3
a folding machine, configured for folding the first side surface and the second side surface along crease lines to form the folded packaging body
Implementation Method 4
a first side surface and a second side surface located between the bottom part and the upper opening are provided between the front surfaces; the first side surface and the second side surface are provided with crease lines respectively
Data Source
AI summary
The present application relates to a folded packaging container structure, and a bottom folding-sealing device and process, including: a folded packaging body, which forms a cavity for accommodating a object after being folded; an upper opening, which is located on the folded packaging body, at which a cap is provided at least after the cavity is loaded with the object; a folded part A and a folded part B, which are folded and contacted with each other; a front surface of the folded part A and a front surface of the folded part B are provided as corresponding front surfaces of the folded packaging body and are located between the bottom part and the upper opening; at least a first side surface and a second side surface located between the bottom part and the upper opening are provided between the front surfaces.