Foam Skimming Device for Batch-Off Cleaning System

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Solution Overview

Problem

Existing batch-off systems require manual intervention and shutdown for cleaning, especially in areas like the coating device, leading to inefficiencies and resource wastage.

Innovation Solution

A cleaning system with a foam skimming device that allows for automated section-by-section cleaning of batch-off systems, including a collecting container with a foam sloping device to separate and transport foam components, enabling continuous operation without interruption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual cleaning is performed in the coating device area, then the cleaning effectiveness is improved, but the batch-off system must be stopped and operational continuity deteriorates

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidoperational continuity
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The cleaning system is divided into multiple independent collecting containers (first collecting container below coating device, second collecting container below drip zone) that can operate independently. Each container handles specific cleaning tasks, allowing the batch-off system to continue operating while cleaning occurs in parallel without requiring complete system shutdown.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a foam skimming device as an intermediary mechanism between the contaminated solution and the cleaning process. This device automatically removes foam and contaminants from the surface of the anti-adhesion agent solution, enabling continuous cleaning without manual intervention and without interrupting batch-off operations.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the batch-off system is shut down for cleaning, then thorough cleaning can be performed, but downtime increases and productivity decreases

Engineering Contradiction:
Improvecleaning qualityVSAvoiddowntime
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The cleaning system operates continuously in parallel with batch-off operations. The foam skimming device runs continuously to remove foam and contaminants from the anti-adhesion agent solution, and the collecting containers continuously collect and separate contaminants. This eliminates the need to stop production for cleaning, maintaining continuous useful action in both cleaning and production processes.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system performs preliminary cleaning action by continuously removing foam and contaminants as they form on the surface of the anti-adhesion agent solution during normal operation. This prevents accumulation of contaminants that would require extensive cleaning later, maintaining cleaning quality without production interruption.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If complete cleaning of the batch-off system is performed, then all contaminants are removed, but resource consumption (water, anti-adhesion agent) increases

Engineering Contradiction:
Improvecleaning completenessVSAvoidresource consumption
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The system selectively discards only the foam components and solid contaminants that are separated by the foam skimming device and collecting containers. The liquid anti-adhesion agent solution, after foam removal, is recovered and reused in the coating device. This selective discarding and recovering approach maintains cleaning effectiveness while minimizing resource consumption by reusing the valuable liquid anti-adhesion agent.

Inventive Principle:
Principle #34Discarding and recovering

Solution Approach 2:

The foam skimming device changes the physical state and composition of the contaminated solution by separating foam components from liquid components. This parameter change (from homogeneous contaminated solution to separated foam and liquid phases) enables selective recovery of the liquid anti-adhesion agent for reuse, reducing the need for complete replacement and minimizing resource consumption.

Inventive Principle:
Principle #35Parameter changes

4Productivity

If automated cleaning systems are implemented, then operational efficiency is improved, but system complexity increases

Engineering Contradiction:
Improveoperational efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The automated cleaning system is segmented into multiple independent collecting containers with specific functions (first container for foam collection below coating device, second container for liquid collection below drip zone). This segmentation allows each component to perform a specific cleaning task automatically, achieving operational efficiency through automation while keeping each individual component relatively simple and manageable.

Inventive Principle:
Principle #1Segmentation

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 system allows for efficient, automated cleaning of batch-off systems, reducing resource consumption, minimizing downtime, and enabling the reuse of non-laminating solutions, thereby improving operational efficiency and reducing costs.

Implementation Method 1

the foam skimming device is designed to separate foam components of the mixture from liquid components of the mixture and transport the foam components to a foam collection container

Methodology Applied
Scientific EffectFoam separation: Foam

Data Source

PatentEP4201501B1Batch-off system with a cleaning system for batch-off cleaning, and method for batch-off cleaning in a batch-off system with a cleaning system
Publication Date: 2025.04.23 CONTINENTAL REIFEN DEUTSCHLAND GMBH
  • EP4201501B1 patent drawingFigure 1
  • EP4201501B1 patent drawingFigure 2

AI summary

The invention relates to a cleaning system (10) for the section-by-section cleaning of a batch-off system (100), wherein the cleaning system (10) has at least one collection container (20a, 20b) for a mixture (G) to be collected, which contains at least anti-stick agent residues, wherein the at least one collection container (20a, 20b) has at least one foam skimming device (30), wherein the foam skimming device (30) is configured to separate foam components (S) of the mixture (G) from liquid components (F) of the mixture (G) and to transport the foam components (S) to at least one foam collection container (40).