Cellulosic Fiber Matrix Stabilizes Nicotine in Oral Products

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Solution Overview

Problem

Nicotine's volatile and hygroscopic nature, sensitivity to light and air, and instability in oral products lead to processing and stability issues, including rapid or slow release rates, degradation, and unpleasant flavors, making it difficult to incorporate into oral products like gums and lozenges.

Innovation Solution

Stabilizing nicotine by mixing it with cellulosic fiber, allowing absorption into the fiber's pores, and combining it with binders to form a matrix that can be molded into oral products, using techniques like compression molding, to achieve controlled nicotine release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If liquid nicotine is directly incorporated into oral products, then nicotine delivery is achieved, but the release rate becomes excessively fast and processing stability is compromised

Engineering Contradiction:

Improvenicotine delivery speedVSAvoidrelease rate control

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies porous materials by incorporating cellulosic fiber with controlled pore sizes (0.01-100 micrometers) into the oral product matrix. The porous structure of the cellulosic fiber provides capillary action that wicks nicotine from the liquid reservoir, controlling release rate while maintaining delivery effectiveness. This resolves the contradiction by physically regulating nicotine flow without chemical modification.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The patent uses an intermediary approach by introducing a cellulosic fiber matrix that acts as a mediator between the liquid nicotine reservoir and the user's mouth. This intermediary structure regulates the release of nicotine through its porous network, preventing direct rapid release while ensuring sustained delivery over time.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If nicotine complexes are used to stabilize nicotine, then handling and storage stability improve, but incorporation into oral products becomes difficult and release rate is excessively slow

Engineering Contradiction:

Improvenicotine stabilityVSAvoidincorporation into oral product

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent extracts the nicotine from its complexed form and presents it as liquid nicotine that can be directly incorporated into the oral product matrix. By removing the complexing agent and using pure liquid nicotine with cellulosic fiber, the patent eliminates the manufacturing difficulties associated with nicotine complexes while maintaining stability through the physical absorption mechanism of the porous fiber.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the physical state and form of nicotine from complexed solid/liquid mixture to pure liquid nicotine absorbed by cellulosic fiber. This parameter change enables direct incorporation into oral products during manufacturing while the porous structure provides the necessary stability and controlled release, resolving both stability and ease of manufacture contradictions.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If nicotine complexes are used, then nicotine delivery is achieved, but unpleasant flavors and acid by-products are produced

Engineering Contradiction:

Improvenicotine deliveryVSAvoidunpleasant flavor

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent converts the potential harm of acid by-products and unpleasant flavors into a benefit by using cellulosic fiber absorption. The porous fiber structure physically absorbs nicotine without chemical reactions that produce acids, while the cellulosic material itself provides a neutral, pleasant taste profile. This transforms the harmful chemical reactions of nicotine complexes into a benign physical absorption process.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

Provides stabilized nicotine with adjustable release rates and improved flavor profiles, suitable for various molding processes, avoiding degradation and unpleasant tastes.

Implementation Method 1

mixing liquid nicotine with cellulosic fiber to produce a cellulosic fiber-nicotine mixture

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

absorption into the fiber's pores

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Data Source

PatentUS12439950B2Methods and systems for incorporating nicotine into oral products

Publication Date: 2025.10.14 ALTRIA CLIENT SERVICES LLC

AI summary

This document provides methods and systems for stabilizing nicotine and incorporating nicotine into one or more oral products. This document also provides oral products. Nicotine can be stabilized by mixing liquid nicotine with cellulosic fiber such that the liquid nicotine absorbs into pores of the cellulosic fiber to form a cellulosic fiber-nicotine mixture. In some cases, a cellulosic fiber-nicotine mixture can be combined with one or more binders and molded into an oral product.