Textured Composite Panels via In-Mold Particle Foaming
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Solution Overview
Problem
Polymeric composites lack aesthetic appeal due to uniform surfaces, making them less appealing compared to natural materials like stone and brick, and existing methods to impart textures are laborious and unsuitable for commercial manufacturing.
Innovation Solution
Creating composite panels with textured surfaces using a mold process involving particles and a foamable composition, followed by ink jet printing with inorganic pigments for durable, color-stable images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional composite materials are used, then mechanical properties and weathering stability are achieved, but aesthetic appeal deteriorates due to uniform surfaces lacking texture
Solution Approach 1:
The patent applies local quality by incorporating particles of varying sizes, shapes, and colors into specific regions of the mold cavity. Different particle combinations create distinct surface textures and patterns in different areas, allowing the composite panel to mimic natural materials like stone, brick, or wood with region-specific aesthetic characteristics while maintaining the overall structural integrity of the composite material.
2Shape
If binder material with excess particles is applied to composite surfaces, then textured surfaces are achieved, but manufacturing complexity increases due to difficulty in removing excess particles and creating complex images
Solution Approach 1:
The patent employs preliminary action by pre-mixing particles with the liquid polymer composition before injection into the mold. This ensures particles are uniformly distributed throughout the material before it sets, eliminating the need for post-processing to remove excess particles. The texture is created inherently during the molding process itself, significantly simplifying manufacturing operations.
3Ease of manufacture
If hand painting is used to impart complex images onto composite surfaces, then aesthetic quality improves, but productivity deteriorates due to laborious and slow process
Solution Approach 1:
The patent implements preliminary action by incorporating colorants and pigments directly into the liquid polymer composition before injection. This allows complex multi-colored images and patterns to be formed automatically during the molding process as the material sets, eliminating the need for subsequent hand painting or decorative applications. The aesthetic design is built-in rather than added later, dramatically increasing production speed.
4Shape
If particles are embedded into composite surfaces after molding, then textured surfaces are achieved, but manufacturing time increases due to additional processing steps
Solution Approach 1:
The patent applies merging by combining the particle incorporation step with the primary molding operation. Particles are mixed into the liquid polymer composition before injection, so that texture creation and panel formation occur simultaneously in a single manufacturing cycle. This eliminates separate post-molding operations for adding texture, reducing total manufacturing time while achieving the desired surface characteristics.
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 produces composite panels with textured surfaces that mimic natural materials, offering enhanced aesthetic appeal and practicality, with printed images exhibiting improved color stability and durability.
Implementation Method 1
introducing a foamable composition into the mold; allowing the foamable composition to foam within the mold
Data Source
AI summary
Disclosed herein are composite building materials having at least one textured surface. The textured surface includes at least a plurality of particles. The textured surface closely mimics conventional building materials. The building materials can contain an image printed using ink jet printing methods with inks optimized for enhanced color stability.