Razor Blade Columnar Metal Coating for Cutting Force Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing razor blades face challenges in balancing cutting force and durability, with conventional metal coating layers not optimally controlling these factors based on substrate thin film thickness and shape.
Innovation Solution
A razor blade with a metal coating layer formed into columnar structures on a substrate, specifically using a sputtering process to create a heterogeneous material composition that enhances durability and reduces cutting force by optimizing the thin film shape and thickness on the substrate tip and side surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional metal coating layer is formed on the substrate, then the blade has basic durability, but the cutting force is high and durability is insufficient
Solution Approach 1:
The patent applies local quality by creating columnar structures with different orientations in different regions of the metal coating layer. The first columnar structures extend in a first direction while the second columnar structures extend in a second direction, allowing different regions of the coating to provide different functional properties for optimizing both durability and cutting force
Solution Approach 2:
The patent uses composite materials by forming a metal coating layer with heterogeneous material composition containing multiple types of columnar structures with different orientations. This composite structure combines the benefits of different crystallographic orientations to simultaneously improve durability and reduce cutting force
2Duration of action of stationary object
If the metal coating layer thickness is increased to improve durability, then the blade becomes more durable, but the cutting force increases and shaving performance deteriorates
Solution Approach 1:
The patent applies local quality by creating columnar structures with different orientations in different regions of the metal coating layer. The first columnar structures extend in a first direction while the second columnar structures extend in a second direction, allowing different regions of the coating to provide different functional properties for optimizing both durability and cutting force
Solution Approach 2:
The patent changes the structural parameters of the metal coating layer by forming columnar structures with specific orientations and heterogeneous material composition. This structural parameter optimization allows the coating to maintain durability while reducing cutting force, enabling better shaving performance without increasing thickness
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 columnar structure design improves blade durability and reduces cutting force, allowing for effective shaving performance over a larger number of uses compared to conventional blades.
Implementation Method 1
specifically using a sputtering process to create a heterogeneous material composition
Data Source
AI summary
A razor blade and a razor cartridge including the same are proposed. The razor blade may include a substrate including a substrate tip, a first surface extending from the substrate tip to a first side, and a second surface extending from the substrate tip to a second side opposing the first side. The razor blade may also include a metal coating layer formed on the first surface, the second surface, and the substrate tip, in which the metal coating layer includes a plurality of columnar structures formed toward an outside of the substrate.