Polymeric Product Tumbling for Uniform Matte Surface Finishing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods struggle to provide polymer products, particularly elastomer products, with a uniformly dull or matte appearance on their outer surfaces, often resulting in glossy finishes that are perceived as low quality and hinder subsequent coating adherence.
Innovation Solution
A method involving tumbling polymer products with abrasive ceramic objects in the presence of a liquid, such as water, to achieve a matte finish, which also removes flash and edges, enhancing coating adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If polymer products are formed by injection moulding or compression moulding with polished die parts, then the product can be easily removed from the mould, but the external surface becomes glossy which is perceived as low quality and hinders subsequent coating adherence
Solution Approach 1:
The invention applies a release agent to the die parts before moulding to facilitate easy removal, and then applies a matting agent to the external surface after moulding to achieve the desired dull appearance and coating adherence. This preliminary application of specific agents resolves the contradiction between easy removal and surface quality.
Solution Approach 2:
The invention separates the functions of easy removal and surface finishing by extracting them into distinct steps: using a release agent during moulding for easy removal, and then applying a matting agent in a subsequent step to achieve the desired surface appearance. This extraction allows each function to be optimized independently.
2Productivity
If the external surface of polymer products is left glossy from moulding, then the manufacturing process is simple, but the surface appearance is perceived as low quality and coating adherence is poor
Solution Approach 1:
The matting agent is applied to the external surface of the moulded product in a preliminary step before any coating operations. This preliminary matting treatment ensures that subsequent coatings will adhere properly while maintaining a simple overall manufacturing process.
Solution Approach 2:
The matting agent acts as an intermediary substance applied to the glossy external surface of the moulded product. It modifies the surface properties to achieve the desired dull appearance and improve coating adherence without requiring complete process redesign.
3Manufacturing precision
If abrasive blasting with fine water droplets is used to deburr polymeric articles, then edges are removed, but the surface may not achieve uniform matting and requires complex equipment with perforated drums and water recycling
Solution Approach 1:
The invention replaces the complex mechanical abrasive blasting system with a simpler chemical or mechanical matting treatment. Instead of using high-pressure water jets and perforated drums, a matting agent is applied directly to the surface, achieving both edge removal and uniform matting with much simpler equipment.
Solution Approach 2:
The invention extracts the matting function from the complex abrasive blasting process and implements it as a separate, simpler treatment step using a matting agent. This extraction allows edge removal and surface matting to be achieved independently with appropriate simplicity.
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 method efficiently produces a matte finish on polymer products, improving their quality and ensuring better adherence of subsequent coatings, while maintaining uniformity across the entire outer surface.
Implementation Method 1
collecting said intermediate polymer products in a drum and adding abrasive objects and a liquid to the drum, said abrasive objects are ceramic objects having an average size varying between 1 mm and 30 mm... tumbling the one or more intermediate polymer products with said abrasive objects in the presence of said liquid in said drum
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A method is provided for manufacturing polymer products. The method comprises the steps • forming one or more intermediate polymer products from elastomeric polymer; • tumbling one or more intermediate polymer products with abrasive objects in the presence of a liquid.