Razor Blade Edge Polymer Coating With Multi-Stage Sintering
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Solution Overview
Problem
Current methods for coating razor blades with polyfluorocarbon require labor-intensive and equipment-heavy processes to increase the time at target temperature, which can lead to inefficient bonding and durability issues.
Innovation Solution
A method involving a single coating of polyfluorocarbon applied to razor blade edges, followed by a customized temperature profile with multiple heating stages and optional solvent or mechanical treatment to achieve improved adhesion and durability, without additional coating applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the time duration at target temperature is increased to improve bonding, then the bonding strength is improved, but the processing time increases and labor/equipment intensity increases
Solution Approach 1:
The patent applies parameter changes by modifying the temperature profile during sintering. Instead of holding at a single target temperature for extended periods, the process uses multiple temperature stages with varying hold times. This allows achieving sufficient bonding strength through optimized thermal exposure while reducing overall processing time and equipment intensity.
Solution Approach 2:
The sintering process is segmented into multiple temperature stages rather than using a single prolonged heating phase. Each stage has specific temperature and time parameters that contribute to bonding in a controlled sequence, achieving effective adhesion without requiring extended total processing time.
2Reliability
If multiple coating applications are used to increase time at temperature, then the bonding durability is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by using a single coating application that is then subjected to optimized multi-stage sintering. The coating is applied once with sufficient material to ensure durable bonding, and the temperature profile is adjusted beforehand to achieve proper adhesion without requiring multiple coating cycles, thereby simplifying manufacturing.
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 method enhances the durability of the polyfluorocarbon coating, resulting in improved shaving performance and reduced blade tempering, while reducing processing time and material costs.
Implementation Method 1
sintering the polyfluorocarbon polymer to the blades
Implementation Method 2
heating the coated blade edge at the temperature and for the time indicated by the selected temperature profile to adhere the polymer material to the razor blade cutting edge
Data Source
AI summary
A method of manufacturing a razor blade cutting edge, the method including: applying a single coating of a polymer material to the razor blade cutting edge to form a coated blade edge; selecting a temperature profile, where the temperature profile has a temperature and a time, and wherein the temperature profile is selected based on a composition of the razor blade cutting edge; heating the coated blade edge at the temperature and for the time indicated by the selected temperature profile to adhere the polymer material to the razor blade cutting edge; and optionally treating the coated blade edge with a solvent or a mechanical process to partially remove the coating.