Engineered Stone Slab Veining via Resin Segmentation
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Solution Overview
Problem
Existing methods for producing engineered stone slabs struggle to replicate the natural, variegated veins of Calacatta and Statuary marble, as the resin content in the mixture creates distinct color boundaries, making it difficult to achieve a smooth, gradient-like appearance.
Innovation Solution
A method involving a vein pattern mold and multiple intermediate mixtures with varying resin and colorant content, blended to create a variegated second mixture with a higher resin content and controlled viscosity, which is then deposited into predefined grooves to simulate the natural veining patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple color mixtures are placed next to each other in the mold, then distinct color boundaries are formed, but the visual appearance lacks smooth gradient transitions and looks artificial
Solution Approach 1:
The patent changes the resin content parameter of the mixture. By using a first mixture with lower resin content (8-16%) for the base slab and a second mixture with higher resin content (20% or more) for the veins, the material's flowability and blending characteristics are modified. This parameter change enables smooth color transitions while maintaining distinct vein patterns, resolving the contradiction between defined color boundaries and smooth visual gradients.
Solution Approach 2:
The patent employs composite materials with different resin contents to achieve both distinct color boundaries and smooth gradients. The engineered stone combines a base mixture (first mixture) with lower resin content for the overall slab structure and a vein mixture (second mixture) with higher resin content for the veining patterns. This composite approach allows each region to have optimized material properties for its specific visual function.
2Ease of manufacture
If the resin content is increased to improve blending and smooth transitions, then color boundaries become less distinct, but the mixture viscosity increases and becomes harder to process
Solution Approach 1:
The patent segments the engineered stone mixture into two distinct components with different resin contents: a first mixture (8-16% resin) for the base slab and a second mixture (20%+ resin) for the veins. This segmentation allows each component to have optimized properties for its specific function - the base mixture remains processable while the vein mixture provides smooth color transitions and natural-looking patterns.
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 effectively produces engineered stone slabs with smooth, gradient-like color transitions, closely mimicking the appearance of natural Calacatta and Statuary marble, enhancing the aesthetic appeal by avoiding distinct color boundaries.
Implementation Method 1
the damp quartz mixture is moved into a vacuum press machine to compress the damp quartz mixture into a compressed slab
Implementation Method 2
The compressed slab is then placed into a curing machine to be heated into a hardened slab
Data Source
AI summary
A method which may include depositing a first mixture containing resin and aggregate minerals into a first mold; preparing a plurality of further mixtures; wherein the plurality of further mixtures, include at least a second mixture and a third mixture; wherein each of the plurality of further mixtures contain at least one of resin, colorant or aggregate minerals, wherein the plurality of further mixtures is combined by using at least one blending technique in order to blend the plurality of further mixtures into a variegated composite mixture; and further including depositing the variegated composite mixture into the first mold; and wherein the at least one blending technique and the depositing of the variegated composite mixture are computer controlled. Each of the plurality of further mixtures may have a higher resin percentage than the first mixture. The variegated composite mixture may have a viscosity value of at least ten thousand centipoise.