Single-Layer Release Layer for Metal Foil Carrier Peeling
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Solution Overview
Problem
Conventional release layers for metal foils with carriers are multilayered, leading to high production costs, interfacial debonding, and inefficiencies in high-frequency signal transmission due to surface irregularities, while also being prone to deformation and residue during carrier peeling.
Innovation Solution
A single-layered release layer comprising nitrogenous heterocyclic compounds and inorganic compounds like nickel, molybdenum, cobalt, phosphorus, manganese, and iron is used, which acts as both an organic release layer and an inorganic diffusion barrier, ensuring easy carrier removal and high adhesive strength to substrates without residue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a multilayer release layer structure is used, then heat resistance is improved, but production cost increases and interfacial debonding occurs
Solution Approach 1:
The patent combines the organic release layer and inorganic diffusion barrier layer into a single integrated release layer. This unified structure maintains the heat resistance function while eliminating the complexity of multilayer construction and preventing interfacial debonding between separate layers.
Solution Approach 2:
The single-layer release layer is designed to perform multiple functions simultaneously: providing organic release properties, inorganic diffusion barrier properties, and heat resistance. This multi-functional design eliminates the need for separate specialized layers.
2Strength
If the surface of metal foil is roughened to enhance adhesion, then adhesive strength is improved, but high-frequency signal transmission efficiency deteriorates
Solution Approach 1:
The patent applies localized surface treatment to create micro-protrusions only in specific areas where adhesion is needed, rather than uniformly roughening the entire surface. This localized approach provides sufficient adhesive strength while minimizing the impact on high-frequency signal transmission across the overall surface.
3Productivity
If a single-layer release layer is used, then production cost and time are reduced, but heat resistance and diffusion barrier properties may be insufficient
Solution Approach 1:
The single-layer release layer is formulated as a composite material containing both organic components (providing release properties) and inorganic components (providing diffusion barrier and heat resistance properties). This composite formulation allows one layer to deliver the functional performance previously requiring multiple layers.
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 monolayer structure minimizes high-frequency signal loss, reduces production costs, and facilitates carrier peeling without deformation or residue, enabling efficient manufacturing of printed circuit boards.
Implementation Method 1
a release layer for a metal foil with carrier and including one or more nitrogenous heterocyclic compounds and one or more inorganic compounds containing at least one metal selected from the group consisting of nickel, molybdenum, cobalt, phosphorus, manganese, and iron
Data Source
AI summary
The present invention relates to a release layer for a metal foil with carrier and a metal foil with carrier including the release layer. The release layer is designed for easy removal of the carrier and includes one or more nitrogenous heterocyclic compounds and one or more inorganic compounds containing at least one metal selected from the group consisting of nickel, molybdenum, cobalt, phosphorus, manganese, and iron.