Formulation Mixer and Buffer Tank for Precise Property Adjustment

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Solution Overview

Problem

Existing production systems for formulations, such as paints, face challenges in accurately adjusting properties due to non-constant raw material profiles and limited dosing accuracy, leading to time-consuming and impractical adjustments by adding starting materials, which can only compensate in one direction.

Innovation Solution

A production system comprising a small-volume process mixer and a buffer tank, connected via fluid-conducting piping, allows for continuous production and precise adjustment of formulations by monitoring and controlling the mass flow of input materials, enabling efficient mixing and homogenization, and iterative adjustments to achieve target properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If adjustments are made by adding starting materials to compensate for deviations, then the target state can be approached, but the adjustment is limited to one direction and requires extensive time

Engineering Contradiction:
Improveproperty adjustment accuracyVSAvoidadjustment time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system performs preliminary action by determining the actual state of input materials before they are fully processed and adjusts the recipe specifications in advance. This allows the production process to be corrected proactively rather than requiring time-consuming post-production adjustments, directly reducing adjustment time while maintaining precision.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by continuously determining the actual state of input materials and comparing it with target specifications. Based on this feedback, the recipe specifications are dynamically adjusted to compensate for deviations, enabling precise property adjustment without extensive time loss.

Inventive Principle:
Principle #23Feedback

2Adaptability or versatility

If the property profiles of raw materials vary, then the actual state of produced material deviates from target state, but subsequent adjustments are impractical for certain properties

Engineering Contradiction:
Improvematerial property adjustment capabilityVSAvoidproperty adjustment precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The system determines the actual state of input materials with varying property profiles before production and adjusts recipe specifications in advance. This preliminary action enables the system to adapt to different material properties proactively, avoiding impractical post-production adjustments and maintaining manufacturing precision across various material variations.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system changes parameters by dynamically adjusting recipe specifications based on the actual state of input materials. When material properties deviate from targets, the system modifies dosing quantities and production parameters to compensate, enabling versatile adaptation to different material profiles while maintaining precise control over final product properties.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If weighing and dosing of input materials is performed with limited accuracy, then deviations in material properties occur, but increasing dosing accuracy increases system complexity

Engineering Contradiction:
Improvedosing accuracyVSAvoiddosing system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system implements feedback by determining the actual state of input materials and using this information to adjust recipe specifications. This feedback mechanism compensates for limited dosing accuracy without requiring complex high-precision dosing equipment, as the system adapts to actual material states rather than relying solely on precise initial dosing.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs self-service by automatically determining material states and adjusting recipe specifications without requiring complex external intervention. The automated feedback loop compensates for dosing limitations while maintaining simplicity in the overall system architecture.

Inventive Principle:
Principle #25Self-service

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 system enables effective, precise, and adaptable production of formulations, reducing the need for subsequent adjustments and significantly improving the efficiency and speed of achieving desired material properties, particularly in the production of color and effect paints.

Implementation Method 1

They usually contain one or more mixing containers (process mixers) in which the components of the material to be produced are mixed together

Methodology Applied
Scientific EffectMixing: Stirring

Implementation Method 2

buffer tank for mixtures, preferably liquid mixtures, left out of the process mixer (kP)

Methodology Applied
Scientific EffectHomogenization: Stirring

Data Source

PatentEP3625638B1Production system for preparation of formulations
Publication Date: 2021.05.19 BASF COATINGS GMBH

AI summary

The invention relates to a production system comprising a unit (1) which comprises a sub-unit (1.1) for continuously producing formulations. The sub-unit (1.1) comprises a combination of a small-capacity process mixer and a buffer tank, means for feeding a defined amount of a substances into the process mixer, a measuring device for determining properties of a partial charge of a formulation produced in the process mixer, an evaluation device for determining a variation of properties of partial charges produced in the process mixer from the properties of a pre-defined desired state and a device for adapting the supply of substances taking into account the variations. The present invention also relates to a method for producing formulations.