Thermoplastic Container Petaloid Bottom Spherical Curvature
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
PET bottles designed for carbonated drinks face challenges in material efficiency, manufacturing complexity, and mechanical/thermal stress resistance due to the petaloid bottom design, which requires optimal material distribution and manufacturing processes.
Innovation Solution
A thermoplastic container with a petaloid bottom featuring a central area, alternating convex surfaces, an annular rib, and a recess, optimized for reduced material usage and improved strength, allowing for easier manufacturing and enhanced resistance to mechanical and thermal stresses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a petaloid bottom design is used to stiffen the bottom and improve stability, then the bottle can stand stably and resist mechanical stresses, but the manufacturing process becomes more difficult and material distribution becomes non-uniform
Solution Approach 1:
The patent applies spherical curvature to the bottom surface by defining it as a portion of a spherical surface with a specified radius. This curved geometry provides structural stiffening and strength to resist mechanical stresses while maintaining manufacturability through consistent radial orientation of surface elements, allowing uniform material distribution during the molding process.
2Loss of substance
If material is reduced to decrease container weight and cost, then manufacturing cost decreases, but the resistance to mechanical and thermal stresses may be compromised
Solution Approach 1:
The patent implements local quality optimization by varying the thickness and density of material distribution across different regions of the container. The bottom portion features a specific spherical curvature with optimized thickness to provide enhanced stress resistance, while other portions of the container use reduced material. This localized material optimization maintains overall reliability while reducing total material consumption.
Solution Approach 2:
The patent employs composite material structures combining thermoplastic resin with reinforcing elements or multi-layer constructions in critical stress areas. The bottom portion utilizes a composite design that provides superior mechanical and thermal stress resistance with reduced material volume, while maintaining compatibility with the overall container structure.
3Temperature
If the bottle is designed for high temperature resistance to contain carbonated drinks at elevated temperatures, then thermal stability improves, but the material requirements and manufacturing complexity increase
Solution Approach 1:
The patent achieves thermal resistance by optimizing geometric parameters of the container design. The spherical bottom curvature with specifically defined radius and thickness parameters provides enhanced thermal stability and stress resistance at elevated temperatures. This parameter-based approach allows high temperature performance without requiring complex multi-layer structures or specialized materials, maintaining manufacturing simplicity.
Data Source
AI summary
A container (1) made of thermoplastic material, defining an axis (X) and having a petaloid type bottom (2), the bottom (2) comprising: -a central area (3); -a plurality of first convex surfaces (4) towards the outside of the container, which extend from the central area (3); -a plurality of feet (5), arranged alternately with the first convex surfaces (4), and projecting outwards with respect to the first convex surfaces (4); -an annular rib (6), which is coaxial to the axis (X); wherein the first convex surfaces (4) belong to the same spherical surface having the center (C) arranged on the axis (X).