Resin Container Flat Area Recesses Prevent Label Gaps
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Solution Overview
Problem
Resin-made containers with flat areas tend to deform when filled, leading to misalignment of labels and gaps between the label and the container body, which affects the design and stability of the container.
Innovation Solution
The container body features a tubular portion with a flat area that includes recesses in a grid pattern, comprising first and second recess portions, and a rib-shaped portion with projections and grooves, which enhances rigidity and prevents deformation, allowing for optimal label wrapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the container body is filled with content by the constant level method, then the container body can be efficiently filled, but the flat area may be deformed so as to bulge by internal pressure
Solution Approach 1:
The flat area is divided into multiple smaller flat areas by forming recesses (first recess portions and second recess portions) that extend in different directions. This segmentation prevents the entire flat area from bulging uniformly, maintaining the outer peripheral dimension while allowing controlled deformation in segmented regions.
Solution Approach 2:
Resses are strategically positioned in specific locations within the flat area to provide localized rigidity enhancement. The first recess portions extend in a first direction while second recess portions extend in a second direction, creating anisotropic rigidity that prevents bulging in critical areas while maintaining filling efficiency.
2Stability of the object's composition
If the resin-made container is pressed along the axial direction to stabilize it, then the container becomes more stable, but the flat area is subjected to pressing force and may deform so as to bulge
Solution Approach 1:
The flat area is segmented into multiple smaller regions by recesses that extend in first and second directions. This segmentation allows the flat area to accommodate pressing forces during stabilization without undergoing uniform bulging, as the recesses distribute and contain the deformation locally.
Solution Approach 2:
The recesses are pre-formed in the container body before the stabilization pressing is applied. This preliminary structural modification enables the flat area to resist bulging during the subsequent pressing operation, maintaining the outer peripheral dimension for proper label wrapping.
3Ease of manufacture
If the label is wrapped around the body part while the flat area is deformed, then the label can be applied, but an unintended gap may develop between the body part and the label when the flat area is restored
Solution Approach 1:
The flat area is divided into multiple smaller flat areas by recesses extending in first and second directions. This segmentation prevents significant bulging of the outer peripheral dimension, ensuring that the label dimension formed before filling corresponds accurately to the dimension after filling, eliminating gaps.
Solution Approach 2:
Resses are positioned to provide localized rigidity enhancement in critical areas where label contact is essential. The first recess portions and second recess portions create anisotropic structural properties that maintain the outer peripheral dimension in label-wrapping regions while allowing controlled deformation elsewhere.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
Provided is a resin-made container that includes a container body made of resin having a tubular portion formed in a tubular shape and allowing a label to be wrapped therearound and a bottom portion closing one end of the tubular portion in an axial direction, in which the tubular portion includes a flat area in a region covered by the label and the resin-made container includes at least one recess formed so as to enclose a predefined region in the flat area.