Low Temperature Embossing for Natural Material Texture Duplication
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Solution Overview
Problem
Current methods for duplicating the texture and pattern of natural materials for use in car interiors and home appliances are costly and fail to accurately replicate the fine details, limiting their widespread adoption due to high manufacturing costs and damage to the natural material during the process.
Innovation Solution
A low temperature embossing process is used, where a polymer resin with a glass transition temperature of 80 to 90°C is coated on the natural material, followed by specific temperature and pressure conditions to duplicate the texture and pattern, and then a metal mold is created through electroplating, allowing for mass production and large-area application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional high temperature embossing process is used to duplicate natural material texture, then the texture duplication is achieved, but the natural material is damaged and manufacturing cost is high
Solution Approach 1:
The patent changes the temperature parameter from conventional high temperature (typically above 100°C) to low temperature (below the glass transition temperature of the polymer resin, specifically 80-90°C). This parameter change allows the embossing process to duplicate the natural material texture accurately while avoiding thermal damage to the natural material, as the low temperature is sufficient to soften the polymer resin for embossing without harming the organic material underneath.
Solution Approach 2:
The patent introduces a polymer resin coating as an intermediary layer between the natural material and the embossing tool. This intermediary layer absorbs the mechanical and thermal stress of the embossing process, allowing texture duplication while protecting the natural material from direct contact with high temperatures and pressures. The polymer resin acts as a buffer that transfers the texture pattern without transmitting harmful effects to the natural material.
2Ease of manufacture
If artificial pattern manufacturing is used to replicate natural material, then manufacturing cost is reduced, but the fine texture and pattern details are not completely duplicated
Solution Approach 1:
The patent applies a polymer resin coating to the natural material before the embossing process. This preliminary action prepares the surface by creating a layer that can be easily embossed at low temperatures, preserving the fine texture details while reducing the complexity and cost of subsequent manufacturing steps. The pre-coated surface allows for direct texture transfer without requiring complex artificial pattern creation processes.
Solution Approach 2:
The patent uses the natural material itself as the master template for creating the texture pattern, rather than attempting to manually design and create artificial patterns. The embossing tool directly copies the natural texture from the natural material through the polymer resin layer, ensuring complete duplication of fine details while simplifying the manufacturing process and reducing costs associated with pattern design and creation.
3Productivity
If high temperature embossing is used to achieve texture duplication, then the process is faster, but the polymer resin requires high energy consumption and may damage the natural material
Solution Approach 1:
The patent changes the temperature parameter from high temperature to low temperature (below glass transition temperature of 80-90°C). This parameter change reduces energy consumption significantly while maintaining embossing effectiveness. The low temperature is sufficient to soften the polymer resin for texture transfer without requiring the high energy input needed for conventional high temperature processes, thus reducing both energy costs and thermal damage risk.
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 effectively duplicates the distinct texture and fine pattern of natural materials, reducing manufacturing costs while maintaining luxurious and aesthetic properties, enabling mass production and application in various materials such as car interiors, phone cases, and home appliances, with a tactile and visual feel similar to the original material.
Implementation Method 1
a first polymer resin having a glass transition temperature of 80 to 90° C.
Implementation Method 2
forming a metal mold to which the texture and pattern of the first polymer film is duplicated by electroplating metal on the first polymer film
Data Source
AI summary
A method of duplicating texture and pattern of a natural material using a low temperature embossing process is provided. More particularly, in the method of duplicating texture and pattern of a natural material using a low temperature embossing process, a polymer resin having low glass transition temperature is coated on a surface of the natural material and then low temperature embossing process is performed thereon at a specific temperature and a specific pressure to duplicate a distinct texture and a fine pattern of the natural material as they are, thereby improving luxurious and aesthetic properties and achieving a large area and mass production, such that it may be applied to interior and exterior materials of a car, a case of a cellular phone and a laptop, home appliances, or the like.