Coating Method for Dense Film via Segmented Agent Reaction
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Solution Overview
Problem
Existing two-pack plating methods struggle to consistently form a dense and uniform plating film, leading to suboptimal electromagnetic shielding properties and surface quality.
Innovation Solution
A coating method where a substrate with a pre-formed base is sequentially treated with an auxiliary agent and a main agent, allowing them to react and form a dense coating material along the base, while controlling solvent vapor pressure and temperature to prevent foreign matter adhesion and ensure uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-pack plating liquid is simultaneously sprayed to form electroless plating, then the plating liquid can be applied without precipitation and clogging, but the resulting plating film is not sufficiently dense
Solution Approach 1:
The plating liquid is divided into two separate packs (main agent and auxiliary agent) that are applied separately to the substrate. This segmentation prevents premature precipitation and clogging while enabling controlled reaction on the substrate surface to form dense plating film.
Solution Approach 2:
One of the two agents (typically the auxiliary agent) is applied to the substrate in advance before the main agent. This preliminary action prepares the substrate surface and controls the reaction sequence, ensuring dense plating formation while preventing premature precipitation.
2Ease of manufacture
If two-pack plating liquid is simultaneously sprayed to form electroless plating, then the coating process can be performed with separated agents, but the plating film uniformity and surface quality are insufficient
Solution Approach 1:
The plating system is segmented into two separate agents applied through different nozzles or spray systems. This allows independent control of each agent's application parameters, improving film uniformity and surface quality while maintaining ease of manufacture.
Solution Approach 2:
The substrate surface acts as an intermediary where the two separate agents meet and react. This controlled interaction on the substrate surface ensures uniform mixing and reaction, producing high-quality plating films while keeping the agents separated during storage and application.
3Productivity
If highly reactive plating liquid is used for coating, then the plating reaction proceeds rapidly, but precipitation and clogging occur
Solution Approach 1:
The highly reactive plating liquid is segmented into two stable separate agents with lower individual reactivity. When applied separately to the substrate, they mix and react rapidly on the surface, achieving high productivity while preventing precipitation and clogging in the storage and application systems.
Solution Approach 2:
The substrate surface serves as an intermediary reaction zone where the two agents are brought together. This allows the highly reactive plating reaction to occur rapidly on the substrate (high productivity) while keeping the agents separated during storage and transport (no precipitation or clogging).
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
This method enables the formation of a dense and uniform coating film with improved electromagnetic shielding properties and surface quality, reducing foreign matter adhesion and enhancing productivity.
Implementation Method 1
applying an auxiliary agent to a substrate on which a base containing a coating material is formed, and then applying a main agent containing a coating material to the substrate to react the main agent with the auxiliary agent
Implementation Method 2
a portion on the substrate where the base is formed is coated with the coating material
Data Source
AI summary
An object is to coat a target position on a substrate with a dense film. In order to achieve the object, while a substrate on which a base containing a coating material is formed is transported, an auxiliary agent is applied to the substrate, and then a main agent containing a coating material is applied to the substrate to react the main agent with the auxiliary agent, so that a portion on the substrate where the base is formed is coated with the coating material.