Stainless Steel Sheet Etching Patterns Coating Composition
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Solution Overview
Problem
Conventional methods for forming patterns on stainless steel sheets, such as acid etching or engraving, are complex and costly, and coatings with matte film layers suffer from corrosion, fingerprint resistance issues, and poor adhesive strength, leading to compromised product quality and high operational costs.
Innovation Solution
A coating composition comprising 10-30 wt% silane-based compounds, 0.5-6 wt% organic acid, 0.1-3 wt% vanadium compound, 0.1-3 wt% magnesium compound, and a solvent, along with a matte coated film layer formed by UV curing of a transparent ink, providing excellent corrosion and fingerprint resistance, and improved adhesive strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a matte coated film layer is formed on a stainless steel sheet to create etching patterns, then the etching effect is achieved, but corrosion resistance and fingerprint resistance deteriorate on portions where the coated film layer is not formed
Solution Approach 1:
The patent divides the coating system into two distinct layers: a base coating layer that provides comprehensive corrosion and fingerprint resistance across the entire stainless steel surface, and a matte coated film layer that is selectively applied only in pattern areas to create the etching effect. This segmentation allows each layer to perform its specific function without compromising the other.
Solution Approach 2:
The matte coated film layer is applied locally only to specific pattern areas rather than uniformly across the entire surface. This local application creates the desired etching effect in targeted regions while leaving the base coating layer exposed in non-pattern areas to maintain corrosion and fingerprint resistance.
2Shape
If a matte coated film layer is formed by ink jet, roll print or silk screen printing, then the etching effect is achieved, but adhesive strength between the stainless steel sheet and the coated film layer becomes poor
Solution Approach 1:
The base coating layer is applied and cured on the stainless steel sheet before the matte coated film layer is applied. This preliminary action creates a stable, adhesive base that ensures strong bonding between the stainless steel substrate and the subsequent matte film layer, preventing peeling issues.
Solution Approach 2:
The patent uses a composite coating structure consisting of a base coating layer (comprising polyurethane resin, acrylic resin, and silane-based compound) combined with a matte coated film layer. This composite structure leverages the adhesive properties of the base layer and the matting properties of the film layer to achieve both strong adhesion and desired surface effect.
3Shape
If conventional acid etching or engraving methods are used to form patterns on stainless steel sheets, then the etching effect is achieved, but the manufacturing process becomes complicated and operational costs increase
Solution Approach 1:
The patent replaces conventional mechanical or chemical etching methods (acid etching, engraving) with a coating-based approach. Instead of physically or chemically altering the stainless steel substrate, a matte coated film layer is applied to create the etching effect visually, simplifying the manufacturing process and reducing operational costs.
Solution Approach 2:
The patent changes the approach from modifying the substrate (steel sheet) to modifying the surface coating properties. By controlling the gloss parameter of the coated film layer (gloss of 10 or less at 60°), the patent achieves an etching effect without the complexity of traditional etching processes.
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 achieves excellent corrosion and fingerprint resistance on stainless steel sheets with a matte coated film layer, simplifying the manufacturing process, reducing costs, and maintaining product quality by enhancing the surface characteristics and adhesiveness of the coating layer.
Implementation Method 1
a coating layer, formed on the stainless steel sheet and comprising a cured product of the coating composition
Implementation Method 2
forming a coated film layer, having an etching effect, on the coating layer
Data Source
AI summary
Provided is a manufacturing method of a stainless steel sheet having etching patterns. The method includes: coating a coating composition on a stainless steel sheet to form a coating layer; and forming a matte coated film layer, having an etching effect, on the coating layer. The coating composition comprises: 10 to 30 wt% of a silane-based compound, 0.5 to 6 wt% of an organic acid, 0.1 to 3 wt% of a vanadium compound, 0.1 to 3 wt% of a magnesium compound, and a remainder of a solvent.