Gelcoat Process for Simulated Granite Finish

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Solution Overview

Problem

There is a need for a cost-effective and lightweight material that can mimic the appearance of natural stone, such as granite, for applications beyond traditional flat surfaces like floors and countertops, including furniture and fixtures, as natural stone is expensive and heavy, and existing man-made alternatives are either expensive or unattractive.

Innovation Solution

A gelcoat process involving a combination of paints and a catalyst is used to create a simulated granite finish on various substrates, where one paint provides a background color and additional paints form color points, applied using a spraying device with pressurized air and gear pumps, allowing for adjustable ratios and mixing to achieve a realistic stone pattern.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If natural stone materials like granite are used, then aesthetic appearance and durability are improved, but weight and cost increase significantly

Engineering Contradiction:
ImprovedurabilityVSAvoidweight
Core Design Contradiction:
ReliabilityVSWeight of stationary object

Solution Approach 1:

The patent applies a gelcoat process that creates a simulated granite finish by spraying multiple layers of paint (background color, color points, and veining) onto a lightweight substrate. This copying approach reproduces the aesthetic appearance of natural granite without using actual stone, thereby achieving the desired visual effect while dramatically reducing weight and cost.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The invention uses a composite structure consisting of a lightweight substrate (such as wood or composite materials) combined with a gelcoat finish. This composite approach allows the piece to have the structural advantages of lightweight materials while the gelcoat layer provides the aesthetic appearance of natural stone, resolving the contradiction between durability/aesthetics and weight.

Inventive Principle:
Principle #40Composite materials

2Reliability

If natural stone materials like granite are used, then aesthetic appearance is improved, but cost increases significantly

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidcost
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The gelcoat process creates a realistic granite appearance through multiple sprayed paint layers including background color, color points, and veining patterns. This copying method achieves the aesthetic appearance of expensive natural stone at a fraction of the cost by using affordable paint materials instead of actual stone slabs.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The invention replaces expensive natural stone with inexpensive paint materials and lightweight substrates. The gelcoat finish, while not permanent like natural stone, provides sufficient aesthetic durability for furniture applications at a much lower material cost, making the overall product economically viable.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Ease of manufacture

If man-made materials like cultured marble are used to create non-planar fixtures, then ease of manufacturing is improved, but cost and weight increase

Engineering Contradiction:
Improveease of moldingVSAvoidweight
Core Design Contradiction:
Ease of manufactureVSWeight of stationary object

Solution Approach 1:

The patent combines lightweight substrates (wood, composite materials) that are easy to machine and shape with a gelcoat finish that provides the stone appearance. This composite approach allows for easy manufacturing of non-planar fixtures like furniture pieces while keeping the overall weight low, unlike cultured marble which is heavy despite being moldable.

Inventive Principle:
Principle #40Composite materials

4Weight of stationary object

If wood and composite materials are used for furniture, then weight and ease of machining are improved, but aesthetic appearance deteriorates

Engineering Contradiction:
ImproveweightVSAvoidaesthetic appearance
Core Design Contradiction:
Weight of stationary objectVSReliability

Solution Approach 1:

The invention creates a composite structure where the substrate (wood or composite material) provides lightweight and easy machining properties, while the gelcoat finish layer provides the aesthetic appearance of natural stone. This composite approach allows each material to contribute its superior properties, resolving the contradiction between weight/ease of manufacture and aesthetic appearance.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The gelcoat process applies different paint layers (background color, color points, veining) to create a localized stone appearance only on the surface where it is needed for aesthetic effect, while the underlying substrate maintains its lightweight and easy-to-machine properties throughout the entire structure.

Inventive Principle:
Principle #3Local quality

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 allows for the creation of a durable, aesthetically pleasing granite or patterned finish on lightweight substrates like wood and composite materials, offering a cost-effective alternative to natural stone while maintaining the elegance of stone surfaces.

Implementation Method 1

spraying the paint onto a substrate to create a background color

Methodology Applied
Scientific EffectSpray: Spray

Implementation Method 2

supplying a catalyst to the spraying device and spraying the catalyst onto the paint on the substrate

Methodology Applied
Scientific EffectCatalysis: Catalysis

Data Source

PatentUS8800890B2Colorpoint process
Publication Date: 2014.08.12 WOODCRAFTERS HOME PRODUCTS LLC
  • US8800890B2 patent drawing
  • US8800890B2 patent drawing
  • US8800890B2 patent drawing

AI summary

An apparatus and method for creating a realistic granite or other pattern on a substrate, such as a sink, bath, or piece of furniture. The apparatus and method may use gelcoat to create a regular or irregular pattern. The apparatus may use pressurized air or gear pumps to pump paint from tanks to a spraying device.