Dual Surface Treated Injection Molding for Deep Metallic Appearance
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Solution Overview
Problem
Conventional injection molding articles made from opaque materials have limitations in achieving a deep metallic or stereographic appearance for logos, patterns, and designs due to poor durability and limited depth in pattern implementation, especially when not using a protection layer.
Innovation Solution
A dual surface-treated injection molding article is manufactured using a light-transmissive semi-transparent or transparent material, with physical vapor deposition layers, print layers, and paint layers applied to both inner and outer surfaces, allowing for enhanced metallic or stereographic visual effects by forming designs on both sides and protecting them with masking and paint layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a paint layer is formed on an opaque injection molding substrate to provide durability and surface treatment, then the durability is improved, but the metallic appearance and stereographic visual effects are limited
Solution Approach 1:
The invention divides the surface treatment into multiple separate layers (first paint layer, first PVD layer, second PVD layer, second paint layer) applied to different surfaces (inner and outer), allowing each layer to contribute specific properties such as durability, metallic appearance, and stereographic effects without compromising the other functions
Solution Approach 2:
The invention uses composite material structure combining multiple materials (paint layers for durability and PVD layers for metallic appearance) to achieve both durability and enhanced visual effects simultaneously, where each material layer performs its specialized function
2Ease of manufacture
If surface treatment is performed only once on the injection molding substrate, then the manufacturing process is simple, but the depth and precision of patterns and logos are limited
Solution Approach 1:
The single surface treatment process is segmented into multiple treatment steps (first PVD treatment, second PVD treatment) applied to different surfaces, allowing each treatment to focus on specific pattern elements and achieve greater depth and precision than a single treatment could provide
Solution Approach 2:
The invention transitions from single-surface treatment to dual-surface treatment, adding another dimension to the manufacturing process. This allows patterns and logos to be formed with depth on both inner and outer surfaces, enhancing the three-dimensional appearance and precision of ornamental elements
3Ease of manufacture
If opaque material is used for injection molding substrate, then the manufacturing is straightforward, but the metallic appearance and stereographic effects cannot be implemented deeply
Solution Approach 1:
The invention combines opaque substrate material with transparent/semi-transparent PVD layers to create a composite structure where the PVD layers provide metallic appearance and light interaction, while the opaque substrate maintains manufacturing simplicity and structural integrity
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 dual surface treatment enables a more profound implementation of metallic or stereographic appearances on injection molding articles, enhancing visual effects and durability by providing deeper and more precise ornamental designs.
Implementation Method 1
a first physical vapor deposition layer formed on the inner surface of an injection molding substrate
Data Source
AI summary
Disclosed are a dual surface-treated injection molding article, which is manufactured by dually surface-treating an injection molding substrate formed of a light-transmissive semi-transparent or transparent material in such a manner that a metallic appearance is expressed or any of a logo, a pattern, an ornamental design, and a picture is formed on each of inner and outer surfaces of the injection molding substrate, and a method of manufacturing the same.