Matte Surface Finish via UV Crosslinking for Fingerprint Resistance
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Solution Overview
Problem
High pressure decorative laminates are susceptible to fingerprint build-up on their surfaces, which existing chemically modified surfaces have not effectively addressed.
Innovation Solution
A surfacing material with a matte finish is created by applying an electron beam radiation curable epoxy acrylic or urethane acrylic coating to the substrate, which is then UV-irradiated to crosslink only on the surface, followed by electron beam irradiation to harden the entire layer, providing a fingerprint-resistant surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a smooth glossy surface is used on decorative laminates, then the surface appears clean and clear, but fingerprint build-up occurs on the surface
Solution Approach 1:
The patent applies a matte finishing coating that changes the surface optical properties from glossy to matte, which fundamentally alters how the surface interacts with fingerprints and contaminants. This parameter change in surface finish eliminates the capillary effects that cause fingerprint visibility on glossy surfaces.
Solution Approach 2:
The patent uses a composite structure combining the base decorative laminate with a matte finishing coating layer. This composite material approach allows the underlying laminate to maintain its decorative properties while the coating layer provides fingerprint resistance through its matte surface characteristics.
2Object-affected harmful factors
If a matte finish coating is applied to prevent fingerprints, then fingerprint build-up is reduced, but the surface may appear less clean and clear
Solution Approach 1:
The patent optimizes the matte finishing coating parameters including color matching, transparency, and surface texture to maintain visual cleanliness while providing fingerprint resistance. The coating is formulated to preserve the aesthetic qualities of the underlying laminate.
Solution Approach 2:
The matte finishing coating is applied selectively as a surface layer only, leaving the bulk properties of the decorative laminate unchanged. This local application ensures that only the surface properties are modified for fingerprint resistance while the overall appearance and quality of the laminate are preserved.
3Reliability
If UV irradiation is applied to crosslink the coating surface, then the surface is hardened and fingerprint resistance is improved, but energy consumption increases
Solution Approach 1:
The patent employs periodic or controlled UV irradiation cycles to achieve crosslinking. The UV treatment is applied in controlled intervals during the manufacturing process, allowing for efficient energy utilization while ensuring complete crosslinking of the coating for maximum fingerprint resistance.
Solution Approach 2:
The patent replaces thermal curing methods with UV irradiation-based crosslinking. This substitution uses photopolymerization chemistry initiated by UV light instead of thermal energy, providing more efficient and targeted energy application that reduces overall energy consumption while achieving the same hardening effect.
4Strength
If electron beam irradiation is used to harden the coating, then scratch resistance is enhanced, but the manufacturing process complexity increases
Solution Approach 1:
The patent combines multiple curing steps (UV irradiation for surface crosslinking and electron beam irradiation for bulk hardening) into an integrated manufacturing process. This merging of curing methods in a sequential manner achieves enhanced scratch resistance while managing process complexity through coordinated application.
Solution Approach 2:
The patent applies UV irradiation as a preliminary action to crosslink the surface coating before applying electron beam irradiation. This preliminary surface crosslinking creates a resistant base layer that reduces the energy and time required for the subsequent electron beam hardening step, thereby managing overall process complexity.
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 effectively prevents fingerprint build-up on the surface of decorative laminates, maintaining a clean and clear appearance despite regular use, while also enhancing scratch resistance and reducing gloss levels.
Implementation Method 1
The coating is an epoxy acrylic or urethane acrylic applied to the substrate. The epoxy acrylic or urethane acrylic is irradiated with UV-radiation to produce a UV-irradiated layer wherein the epoxy acrylic or urethane acrylic is only crosslinked on the surface thereof
Implementation Method 2
The UV-irradiated layer is then subjected to an electron beam irradiation to crosslink and harden the entire layer
Implementation Method 3
The UV-irradiated layer is further subjected to thermal curing
Data Source
AI summary
A textured release sheet includes a substrate including a top side and a bottom side. A matte surface is formed on the bottom side thereof, wherein the matte surface of the surfacing material is a coating of an radiation curable material applied to the bottom side of the substrate. The coating is an UV curable acrylate mixture applied to the substrate, wherein the UV curable acrylate mixture is irradiated with UV-radiation via an excimer laser emitter to produce a UV-irradiated layer wherein the UV curable acrylate mixture is only crosslinked on the surface thereof, which produces a matting surface through the effects of a micro-convolution.