Film Active Ingredient Transfer Method

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Solution Overview

Problem

Conventional methods of forming films with active materials for consumer products are costly and prone to instability due to migration of active ingredients into carriers, requiring additional processing steps and limiting manufacturing conditions.

Innovation Solution

Introducing a film substantially free of active ingredients into a medium containing the active ingredient, allowing for passive or active transfer of the ingredient into the film, which is then stabilized for use in oral care, personal care, and home care compositions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If active materials are incorporated into the film during manufacturing, then the film contains the active ingredient, but the active material becomes unstable during storage due to migration into the carrier

Engineering Contradiction:

Improveactive ingredient content in filmVSAvoidstability of active material during storage

Core Design Contradiction:

Quantity of substanceVSStability of the object's composition

Solution Approach 1:

The system is divided into separate components: the film carrier and the active ingredient are kept separate during storage. The film is substantially free of active ingredient, while the active ingredient is contained in the carrier. This segmentation prevents interaction between the active material and incompatible carrier components, maintaining stability during storage while still enabling localized release during use.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The film acts as an intermediary carrier that can be introduced into the product carrier without containing the active ingredient itself. This allows the film to serve as a delivery vehicle while the active ingredient remains stable in the product carrier, preventing direct contact between potentially incompatible substances.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Quantity of substance

If active materials are incorporated into the film during manufacturing, then the film contains the active ingredient, but additional processing steps and manufacturing costs are incurred

Engineering Contradiction:

Improveactive ingredient content in filmVSAvoidmanufacturing cost and processing steps

Core Design Contradiction:

Quantity of substanceVSEase of manufacture

Solution Approach 1:

The active ingredient is extracted from the film manufacturing process entirely. The film is manufactured without incorporating the active ingredient, eliminating the additional processing steps and manufacturing costs associated with incorporating active materials during film production. The active ingredient is instead incorporated into the final product carrier separately.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The film is prepared in advance as a blank carrier without the active ingredient. The active ingredient is then added to the final product formulation separately. This preliminary preparation of the film without active ingredients simplifies the manufacturing process and reduces costs while still achieving the desired localized release function.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If the film is cut into flakes or pieces and dispersed into the product carrier, then the film can be introduced into the product, but potential instability occurs due to migration of active material from film into carrier

Engineering Contradiction:

Improveintroduction of film into productVSAvoidstability of active material during storage

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The active ingredient is extracted from the film before the film is introduced into the product carrier. The film is substantially free of active ingredient, which eliminates the source of potential migration and instability issues while still allowing the film to be easily dispersed into the product carrier as flakes or pieces.

Inventive Principle:

Principle #2Taking out (Extraction)

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 method reduces manufacturing costs, enhances stability of active ingredients during storage, and ensures effective localized release of active materials in consumer products.

Implementation Method 1

introducing a film that is substantially free of an active ingredient into a medium that comprises the active ingredient. The film is such that the active ingredient can be suitably transferred to it.

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

the active ingredient can be suitably transferred to it... at least a portion of the active ingredient present in the medium is transferred to the film

Methodology Applied

Scientific EffectDiffusion: Diffusion

Data Source

PatentUS9682256B2Methods of making compositions comprising films

Publication Date: 2017.06.20 COLGATE PALMOLIVE CO

AI summary

The invention relates to methods of making films having active ingredients. A film that is substantially free of active ingredient is introduced into a medium comprising an active ingredient. At least a portion of the active ingredient is transferred from the medium to the film. The films can be used in a variety of applications, including oral care, personal care, cleansing and/or home care compositions.