Gable-Top Paper Container Folding for Stable Stacking and Resealing
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Solution Overview
Problem
Existing gable top-type paper containers face challenges in stable stacking, space efficiency during transportation, and effective resealing, particularly when dealing with contents of varying viscosities, due to limitations in top surface inclination angles and resealing mechanisms.
Innovation Solution
A paper container design with specific angle settings for top surface forming panels, auxiliary folding lines, and a cutout portion, allowing for stable stacking, reduced space usage, and efficient resealing without additional clips or chucks, by utilizing a paperboard material with thermoplastic resin laminates and defined folding mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the inclination angle of top surfaces is reduced to improve stacking stability and space efficiency, then stacking stability and space utilization are improved, but the ability to maintain resealing state deteriorates
Solution Approach 1:
The patent optimizes the inclination angle of top surface forming panels to a specific range (5-20 degrees) to simultaneously achieve stable stacking and effective resealing. This parameter optimization resolves the contradiction by finding the optimal balance point where both stacking stability and resealing capability are satisfied.
2Volume of stationary object
If the inclination angle of top surfaces is reduced to decrease accommodation space, then space efficiency is improved, but stacking stability worsens
Solution Approach 1:
The patent determines the optimal inclination angle range (5-20 degrees) that minimizes accommodation space while maintaining stacking stability. This parameter optimization resolves the contradiction between space efficiency and stacking stability.
3Reliability
If the inclination angle of top surfaces is increased to improve resealing capability, then resealing capability is improved, but stacking stability deteriorates
Solution Approach 1:
The patent optimizes the inclination angle to a specific range (5-20 degrees) that provides sufficient resealing capability while preventing excessive inclination that would compromise stacking stability. This parameter optimization resolves the contradiction between resealing capability and stacking stability.
4Reliability
If additional sealing mechanisms (clips or chucks) are added to improve resealing capability, then resealing capability is improved, but device complexity increases
Solution Approach 1:
The patent enables the paper container to perform its own sealing function by utilizing the folding mechanism of side surface forming panels and the geometry of top surface forming panels. The container structure itself provides the sealing action without requiring external clips or chucks, thus resolving the contradiction between resealing capability and device complexity.
5Ease of operation
If the top portion is fully opened to extract high viscosity content, then extractability of high viscosity content is improved, but resealing capability deteriorates
Solution Approach 1:
The patent divides the top portion into separable components: top surface forming panels that can be fully opened for high viscosity content extraction, and side surface forming panels with folding mechanisms that enable resealing. This segmentation allows the container to provide both full opening capability and effective resealing.
Solution Approach 2:
The patent employs dynamic folding mechanisms in the side surface forming panels that allow the top portion to transition between open and closed states. This dynamic structure enables full opening for extracting high viscosity content while maintaining the ability to reseal effectively.
Data Source
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AI summary
In order to obtain a paper container that is a gable top-type paper container, which can achieve ease of stacking and space saving of an accommodation place at the time of transportation or the like, and which enables maintaining a state of resealing by pushing into an upper end portion, provided is a paper container, in which an angle formed by each of side surface forming panels (23, 24) and an upper edge (44) of each of body forming panels (7, 9) with which the side surface forming panels (23, 24) are contiguous is set to 2 degrees or more and 20 degrees or less; first auxiliary folding lines (32, 33) are formed on each of top surface forming panels (16, 17) so as to extend from right and left positions of a lower end of each of the top surface forming panels (16, 17) to positions closer to a center position of an upper end of each of the top surface forming panels (16, 17); and a length (L1) between intersections (34, 35) at which first auxiliary folding lines (32, 33) and a lower end of each of outer-side top sealing panels (14, 15) intersect with each other is set to from 5% to 50% of a lateral length (L2) of each of the outer-side top sealing panels (14, 15).