Thermoformed Polypropylene Cup Stiffeners for Beverage Maker
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
One-cup beverage brewing systems face challenges in maintaining structural integrity during handling, assembly, and exposure to hot, high-pressure water due to deformation issues caused by cannula puncture and radial forces.
Innovation Solution
A cup made from polypropylene using a thermoforming process, featuring a bowl with side-wall stiffeners and a floor stiffener configuration that minimizes deformation, along with a stacking shoulder and brim design for enhanced strength and separation in stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cup is made from thin-walled plastic material, then ease of manufacture and cost are improved, but structural integrity and resistance to deformation during handling and brewing deteriorate
Solution Approach 1:
The cup is divided into multiple functional zones with different wall thicknesses and structural characteristics. The bowl portion has optimized thickness for brewing, while the flange and rim areas have additional reinforcement. This segmentation allows thin-walled construction in critical brewing areas while providing extra strength in handling and stacking zones, resolving the contradiction between ease of manufacture and structural integrity.
Solution Approach 2:
Different portions of the cup are given different local properties through varying wall thickness, material density, and structural reinforcement. The bottom and side walls have optimized thickness for heat retention and structural support, while the rim area is designed for stacking compatibility. This local quality approach enables the cup to be easily manufactured as a single piece while maintaining high structural integrity where needed.
2Strength
If the cup wall thickness is increased to improve structural integrity, then resistance to deformation is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The cup design incorporates dynamic structural features including integrated ribs, varying wall thicknesses, and geometric reinforcement patterns that adapt to different loading conditions. These dynamic structural elements provide high strength-to-weight ratio without requiring uniformly thick walls, thereby maintaining manufacturing simplicity while achieving superior structural integrity.
Solution Approach 2:
The cup utilizes composite structural design combining different material properties within a single thermoplastic component. Through injection molding techniques, the cup incorporates internal reinforcement structures, varying material densities, and multi-layer construction in a single manufacturing process. This composite approach achieves high structural integrity without increasing manufacturing complexity, as all features are integrated into one molding operation.
3Reliability
If the cup design includes reinforcement structures, then resistance to radial forces during puncture is improved, but manufacturing precision requirements increase
Solution Approach 1:
The reinforcement structures including ribs, gussets, and varying wall thicknesses are pre-integrated into the cup design during the molding process. These preliminary structural reinforcements are built-in before the cup enters service, providing inherent resistance to radial forces and puncture loads. The design anticipates loading conditions and incorporates appropriate structural features upfront, reducing the need for post-manufacturing adjustments and maintaining reasonable precision requirements.
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 effectively maintains the cup's shape during handling, assembly, and brewing, resisting deformation and radial forces, ensuring consistent performance and ease of manufacturing.
Implementation Method 1
the bowl comprises polypropylene and is made using a thermoforming process
Data Source
AI summary
A beverage maker includes a brewing package. The brewing package includes a cup and a filter bag. The filter bag is supported in an interior region formed in the cup.