Microencapsulated Smokeless Tobacco Additives

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Solution Overview

Problem

Existing smokeless tobacco products face challenges in maintaining storage stability and sensory characteristics due to chemical interactions among ingredients, leading to reduced shelf-life and undesirable sensory experiences.

Innovation Solution

A smokeless tobacco product with a tobacco formulation containing microencapsulated additives that physically separate from other components, using encapsulated forms such as microcapsules to prevent interaction and enhance storage stability, and release additives during use, thereby improving sensory characteristics and extending the release of flavors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additives are mixed directly with tobacco formulation, then manufacturing process is simple, but chemical interactions occur leading to reduced storage stability and degraded sensory characteristics

Engineering Contradiction:

Improvestorage stabilityVSAvoidformulation structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The additive is segmented from the tobacco formulation by enclosing it within a capsule. This physical separation prevents direct contact and chemical interactions between the additive and tobacco components during storage, thereby maintaining storage stability while allowing for controlled release during use.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The capsule acts as an intermediary barrier between the additive and the tobacco formulation. This intermediate structure allows the additive to be transported and stored without directly interacting with the tobacco components, while still enabling the desired sensory effects when the capsule is consumed.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Duration of action of stationary object

If additives are encapsulated to prevent interaction, then storage stability is enhanced, but manufacturing process becomes more complex

Engineering Contradiction:

Improveshelf-lifeVSAvoidmanufacturing process

Core Design Contradiction:

Duration of action of stationary objectVSEase of manufacture

Solution Approach 1:

The additive is pre-encapsulated in a capsule before being incorporated into the tobacco formulation. This preliminary encapsulation action protects the additive from degradation and unwanted interactions during storage and handling, extending the shelf-life of the final product.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If additives are released immediately upon contact with moisture, then sensory characteristics are enhanced, but release duration is too short

Engineering Contradiction:

Improvesensory characteristicsVSAvoidflavor release duration

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The capsule is designed with dynamic properties that allow it to maintain structural integrity during storage and handling, then progressively break down or dissolve when exposed to moisture in the user's mouth. This dynamic behavior enables controlled release of the additive over an extended period, enhancing both sensory characteristics and duration of action.

Inventive Principle:

Principle #15Dynamics

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 microencapsulation of additives in smokeless tobacco products enhances storage stability, maintains sensory profiles, and provides a milder sensory experience by controlling the release of flavors, reducing storage and transportation costs, and improving product shelf-life.

Implementation Method 1

the additive is in a form that physically separates the additive from the tobacco formulation

Methodology Applied

Scientific EffectPhysical separation through encapsulation: Physical Containment

Implementation Method 2

release additives during use, thereby improving sensory characteristics and extending the release of flavors

Methodology Applied

Scientific EffectControlled release:

Data Source

PatentEP2173200B1Smokeless tobacco compositions and methods for treating tobacco for use therein

Publication Date: 2017.11.15 R J REYNOLDS TOBACCO COMPANY

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Figure 3~4

AI summary

A smokeless tobacco product configured for insertion into the mouth of a user of the product is provided, the tobacco product (10) including a water-permeable pouch (12) containing a tobacco formulation, the tobacco formulation including a tobacco material (14) and a plurality of microcapsules (16) dispersed within the tobacco material, the plurality of microcapsules including an outer shell encapsulating an internal payload. The internal payload may include an additive such as water, flavorants, binders, colorants, pH adjusters, buffering agents, fillers, disintegration aids, humectants, antioxidants, oral care ingredients, preservatives, additives derived from herbal or botanical sources, and mixtures thereof. The invention also provides processes for preparing a tobacco composition suitable for use as a smokeless tobacco composition, the processes including a heat treatment step for pasteurization of the tobacco composition.