Reconstituted Plant Material With Nicotine Salt Extract Reapplication

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Solution Overview

Problem

Conventional reconstituted tobacco products made by the paper-making process suffer from reduced aroma and nicotine content due to volatile compound losses during processing, making them unsuitable for heat-not-burn devices without additional humectant incorporation.

Innovation Solution

A method involving the extraction of fibrous plant material to separate an extract and fibrous portion, combining a nicotine salt with the extract, and applying it to a base sheet to enhance nicotine content and flavor retention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the paper-making process is used to manufacture reconstituted tobacco, then the processing efficiency is improved, but the nicotine content and aroma/flavour are reduced

Engineering Contradiction:
Improveprocessing efficiencyVSAvoidnicotine content
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The patent applies preliminary action by adding nicotine salt to the extract before the paper-making process begins. This ensures nicotine is present in the stock solution before fiber formation, preventing loss during subsequent processing steps and ensuring the final product achieves the required nicotine content while maintaining processing efficiency

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent changes the chemical parameter of the extract by adding nicotine salt, transforming it from a nicotine-deficient solution to a nicotine-enriched stock solution. This parameter change occurs before the paper-making process, allowing the subsequent steps to proceed efficiently while producing tobacco with adequate nicotine content

Inventive Principle:
Principle #35Parameter changes

2Productivity

If the paper-making process is used to manufacture reconstituted tobacco, then the processing efficiency is improved, but the aroma/flavour is reduced

Engineering Contradiction:
Improveprocessing efficiencyVSAvoidaroma/flavour
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The patent applies preliminary action by adding flavour compounds to the extract before the paper-making process begins. This ensures flavour is present in the stock solution before fiber formation, preventing loss during subsequent processing steps and ensuring the final product maintains aroma and flavour while achieving processing efficiency

Inventive Principle:
Principle #10Preliminary action

3Ease of manufacture

If conventional reconstituted tobacco is made by paper-making process, then the manufacturing simplicity is improved, but the suitability for heat-not-burn devices is worsened

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidsuitability for HNB devices
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent changes the chemical composition parameters of the extract by adding nicotine salt and flavour compounds, transforming conventional reconstituted tobacco into a product suitable for heat-not-burn devices. This maintains the simplicity of the paper-making process while achieving the required nicotine content and flavour profile for HNB application

Inventive Principle:
Principle #35Parameter changes

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 ensures improved sensory experience by minimizing nicotine and flavor losses, enabling a consistent and enhanced nicotine content in reconstituted tobacco products for heat-not-burn devices.

Implementation Method 1

water soluble compounds present in the tobacco are extracted into the aqueous solvent

Methodology Applied
Scientific EffectExtraction: Liquid-Liquid Extraction

Implementation Method 2

The aqueous extract is concentrated and then reapplied to the base sheet

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP3813565B1A method for manufacturing reconstituted plant material
Publication Date: 2026.03.25 IMPERIAL TOBACCO LTD
  • EP3813565B1 patent drawingFigure 1

AI summary

A method for manufacturing a reconstituted plant material includes the steps of extracting a fibrous plant material with a solvent to provide an extract and a fibrous portion, separating the extract from the fibrous portion, forming a base sheet from the fibrous portion, combining a nicotine salt with the extract and applying the extract to the base sheet.