In-Line Paint Mixing Process for Inventory Reduction

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Solution Overview

Problem

The existing batch processes for paint production, both base system and point-of-sale models, are inefficient due to high inventory requirements, excessive use of TiO2, and labor-intensive mixing, which limits flexibility and increases costs.

Innovation Solution

An in-line mixing process that feeds aqueous dispersions of polymer particles, opacifying pigment particles, and matting agents into a mixing chamber, blending them to form a fully blended paint with adjustable viscosity, allowing for efficient and rapid production of various paints with customizable TiO2 levels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a batch process is used to produce paint, then paint can be manufactured in bulk, but substantial inventory is required and the process is labor intensive

Engineering Contradiction:
Improvebulk paint productionVSAvoidinventory requirement
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The invention segments the paint formulation process into separate modular components: a base paint containing binder and extender, and separate colorant tubes. This segmentation allows for continuous production of standardized base paint with minimal inventory, while flexibility is maintained through the separate colorant addition at the point of use. The base paint can be produced continuously without requiring large inventories of finished painted products.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention performs preliminary formulation of the base paint with binder and extender components before the final colorant addition. This preliminary action allows the base paint to be manufactured continuously and stored in minimal quantities, while the complete colored paint is prepared only when needed by adding colorant to the pre-formulated base, thereby reducing inventory requirements.

Inventive Principle:
Principle #10Preliminary action

2Device complexity

If a fixed amount of TiO2 is used in the paint base, then the base system is simplified, but flexibility to adjust TiO2 levels is lost

Engineering Contradiction:
Improvebase system simplicityVSAvoidTiO2 level adjustment flexibility
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The invention separates the TiO2 content into two distinct components: a fixed, simplified base paint formulation containing a predetermined amount of TiO2, and a separate colorant tube that allows for flexible adjustment. This segmentation maintains base system simplicity while enabling adaptability through the separate colorant addition, where TiO2 levels can be adjusted by varying the amount of colorant added to the base paint.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention allows for parameter changes in TiO2 levels by enabling variable addition of colorant to the base paint. The base paint maintains a fixed, simplified formulation, while the final TiO2 content can be adjusted by changing the amount of colorant added, thus achieving flexibility without complicating the base system structure.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If excess TiO2 is present in the untinted paint, then the base system is simplified, but unnecessary costs are incurred and additional time is required to prepare the final paint

Engineering Contradiction:
Improvebase system simplicityVSAvoidfinal paint preparation time
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The invention segments the paint preparation process into base paint formulation and final colorant addition. By separating these steps, the base paint can be manufactured with simplified, fixed TiO2 content, while the final preparation time is minimized through automated or rapid colorant addition to the pre-formulated base, reducing the overall time lost to adjustments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention performs preliminary formulation of the base paint with optimized TiO2 content before final assembly. This preliminary action allows the base paint to be prepared efficiently with simplified composition, while the final paint preparation time is reduced by adding colorant to the pre-formed base rather than adjusting TiO2 levels during the entire formulation process.

Inventive Principle:
Principle #10Preliminary action

4Adaptability or versatility

If a point-of-sale model with separate holding tanks is used, then flexibility is improved, but the process becomes labor intensive and cost intensive

Engineering Contradiction:
Improvepaint customization flexibilityVSAvoidmixing operation simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The invention merges the base paint and colorant components into a unified formulation process where the colorant is added directly to the base paint in a single operation. This merging simplifies the mixing operation compared to separate holding tanks while maintaining flexibility, as the combined process can be automated and requires minimal manual intervention for customization.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The invention creates a universal base paint formulation that can serve multiple purposes by allowing flexible colorant addition. The base paint is designed to be compatible with various colorants and can be customized for different applications, providing multi-functionality without requiring complex separate storage and mixing systems for each variant.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 process enables the efficient and versatile production of paints with minimal cleanup and no additional mixing required, reducing costs and time by allowing for precise control over TiO2 levels and viscosity, thus overcoming the inefficiencies of traditional methods.

Implementation Method 1

mixing the aqueous dispersions in the mixing chamber to form a fully blended paint

Methodology Applied
Scientific EffectMixing: Stirring

Data Source

PatentUS20240198717A1In-line process for preparing paint
Publication Date: 2024.06.20 ROHM & HAAS CO
  • US20240198717A1 patent drawing
  • US20240198717A1 patent drawing

AI summary

The present invention is a process for preparing one or more paints by flowing and merging pre-paints from pre-paint storage tanks into a mixing chamber and into a paint container.