Flat-Oval Drinking Straw Design to Prevent Lip Puckering and Creasing
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Solution Overview
Problem
Conventional drinking straws often require puckering or pursing of the lips, leading to potential lip creasing and are either disposable and environmentally harmful or require cleaning and carrying, with designs prone to collapse under suction pressure.
Innovation Solution
A lip-pucker avoiding drinking straw with a tubular body featuring a cylindrical main section and a flat oval proximal section, allowing for smooth liquid flow without lip puckering, and optionally a bending segment for flexibility, manufactured from durable materials like stainless steel or biodegradable plastics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional drinking straws are used, then liquid can be transported from container to mouth, but lip puckering is required causing permanent creasing of the upper lip
Solution Approach 1:
The straw is divided into distinct sections with different cross-sectional profiles: a proximal section with a larger, non-circular opening for lip accommodation, and a distal section with a smaller circular opening for insertion into the beverage container. This segmentation allows each section to serve its specific function optimally.
Solution Approach 2:
The proximal section of the straw features an asymmetric non-circular cross-section (such as oval or rectangular) that differs from the circular cross-section of the distal section. This asymmetry enables the straw to fit comfortably between relaxed lips without requiring puckering, while maintaining structural integrity.
2Ease of operation
If disposable plastic straws are used, then convenience is improved, but environmental pollution becomes significant
Solution Approach 1:
The invention changes the material parameter from disposable plastic to reusable materials such as metal (stainless steel, aluminum) or biodegradable plastics. This parameter change enables the straw to be reused multiple times, significantly reducing environmental pollution while maintaining convenience.
3Object-generated harmful factors
If disposable paper or lightweight degradable plastic straws are used, then environmental impact is reduced, but the straw collapses or fails under suction pressure
Solution Approach 1:
The straw can be constructed from composite materials or blended materials that combine the strength and rigidity needed to resist collapse with the environmental benefits of biodegradability. For example, a metal core with a biodegradable coating, or a blend of biodegradable plastics with reinforcing fibers.
Solution Approach 2:
The invention changes the material parameters to achieve optimal strength-to-weight ratio and structural integrity. Reusable metal straws or straws made from engineered biodegradable materials with enhanced mechanical properties resist collapse under suction pressure while maintaining environmental friendliness.
4Object-generated harmful factors
If reusable straws are used, then environmental impact is minimized, but cleaning and carrying requirements increase
Solution Approach 1:
The reusable straw design incorporates features that facilitate easy cleaning, such as smooth surfaces, rounded corners, and openings designed to prevent food particle trapping. The simple tubular structure allows for easy rinsing and maintenance without requiring complex disassembly or special cleaning procedures.
Data Source
AI summary
A lip-pucker avoiding drinking straw providing a tubular body defining an elongated central opening for the flow of liquid without requiring puckering or pursing of the user's lips. The tubular body and elongated opening have a substantially round sectional profile at a distal end meant to be placed into a container of liquid, and a substantially flat-oval sectional profile at a proximal end meant to be placed between the user's lips and to be accommodated by the user's lips without requiring puckering or pursing of the lips. The sectional profile of the elongated opening changes from a round profile at the distal end and through most of the tube body to a flat oval profile at the proximal end segment, with the change of profile occurring at a connecting segment downstream of the proximal end. The sectional area of the elongated opening in the proximal part is greater than the sectional area at the distal part and through most of the tube body, providing an advantageous difference in liquid pressure at the connecting part. An optional bending segment can be provided to provide a bend in the tubular body.