Synthetic Resin Container With Narrow-Width Pressure Panels
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Solution Overview
Problem
Synthetic resin containers with oblique reduced pressure absorbing panels face issues with label wrinkles and compromised mold release properties when labels are applied, particularly with roll labels, due to differences in panel widths and distances from the central axis.
Innovation Solution
The container features reduced pressure absorbing panels with a narrow-width portion located between the panel upper and lower ends, arranged vertically and twisting in the circumferential direction, and defined by annular horizontal grooves, maintaining rigidity and preventing label wrinkles while ensuring effective pressure absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If oblique reduced pressure absorbing panels are provided in the trunk portion, then the container maintains its appearance shape and absorbs reduced pressure effectively, but label wrinkles occur and mold release properties deteriorate
Solution Approach 1:
The patent applies local quality by varying the width of reduced pressure absorbing panels at different locations. Specifically, the panels have a first width in the upper portion and a second width (narrower than the first width) in the lower portion. This local variation allows the upper panels to provide sufficient reduced pressure absorption while the narrower lower panels facilitate easier mold release during manufacturing, thus resolving the contradiction between reliable pressure absorption and ease of manufacture.
2Reliability
If oblique reduced pressure absorbing panels are provided in the trunk portion, then the container maintains its appearance shape and absorbs reduced pressure effectively, but label wrinkles occur when labels are applied
Solution Approach 1:
The patent applies local quality by varying the width of reduced pressure absorbing panels at different locations. Specifically, the panels have a first width in the upper portion and a second width (narrower than the first width) in the lower portion. This local variation allows the upper panels to provide sufficient reduced pressure absorption while the narrower lower panels reduce the circumferential length difference, preventing label slacking and wrinkles during label application, thus resolving the contradiction between reliable pressure absorption and manufacturing precision.
3Manufacturing precision
If the width of reduced pressure absorbing panels is reduced to prevent label wrinkles, then label appearance is improved, but mold release properties deteriorate
Solution Approach 1:
The patent applies local quality by varying the width of reduced pressure absorbing panels at different locations. Specifically, the panels have a first width in the upper portion and a second width (narrower than the first width) in the lower portion. The narrower lower panels prevent label wrinkles by reducing circumferential length differences, while the wider upper panels maintain sufficient reduced pressure absorption capability. This localized width variation resolves the contradiction between improving label application quality and maintaining ease of manufacture.
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
This configuration effectively absorbs reduced pressure during hot filling, prevents label wrinkles, and maintains good mold release properties, even with roll labels, by allowing the label to adhere without slacking and twisting, thus enhancing the container's appearance and functionality.
Implementation Method 1
the trunk portion is provided with the reduced pressure absorbing panels, which may be deformed to absorb the reduced pressure inside the container, thereby preventing the entire trunk portion to be deformed significantly
Data Source
AI summary
Provided is a synthetic resin container that effectively absorbs the reduced pressure generated inside the container as a result of hot filling and that also prevents deterioration in appearance of a label applied to an outer circumferential surface of a trunk portion of the container. A synthetic resin container according to the present disclosure includes a mouth portion, a trunk portion, and a bottom portion. The trunk portion is provided with a plurality of reduced pressure absorbing panels extending in the vertical direction while twisting in the circumferential direction and being arranged side by side in the circumferential direction. Each reduced pressure absorbing panel has a narrow-width portion located in a region between the panel upper end and the panel lower end. A width of each reduced pressure absorbing panel is reduced in the narrow-width portion than in the panel upper end and the panel lower end.