Job Site Adhesive Mixing via Segmented Additive Dispersion

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Solution Overview

Problem

Conventional roofing adhesives face issues such as settling of additives over time, sensitivity to temperature, and increased shipping costs due to weight and space requirements, leading to suboptimal performance and potential freezing damage during transport.

Innovation Solution

A method of preparing adhesives at the job site by mixing pre-packaged adhesive additive and filler components with a solvent, allowing for local sourcing of the solvent and reducing the need for premixing, which minimizes settling and temperature-related issues, and optimizing viscosity through a letdown portion of solvent.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If pre-mixed adhesive is supplied in large vessels from factory, then shipping and storage are simplified, but additives settle out over time and adhesive may freeze during transport

Engineering Contradiction:

Improveshipping and storage convenienceVSAvoidadhesive integrity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The adhesive system is divided into separate components: solid additive components and liquid solvent components are packaged separately and mixed at the job site. This prevents settling during transport while maintaining the ability to create a complete adhesive formulation when needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Additive components are pre-packaged in ready-to-use quantities before reaching the job site. This preliminary preparation allows for quick mixing at the destination without requiring long-term storage of pre-mixed adhesive, thereby preventing both settling and freezing issues.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If pre-mixed adhesive is transported long distances, then factory production efficiency increases, but shipping costs increase due to weight and space

Engineering Contradiction:

Improvefactory production efficiencyVSAvoidshipping costs

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The solvent component is extracted from the pre-mixed adhesive formulation and supplied separately. Since solvent typically constitutes the majority of adhesive volume and weight, this extraction dramatically reduces shipping weight and space requirements while allowing factory production to focus on manufacturing the solid additive components.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The adhesive formulation parameters are changed by separating the liquid solvent phase from the solid additive phase. This parameter change allows the adhesive to be transported in a concentrated, low-volume state and then reconstituted at the job site, optimizing both factory efficiency and shipping economics.

Inventive Principle:

Principle #35Parameter changes

3Duration of action of stationary object

If pre-mixed adhesive is stored for extended periods, then inventory management is simplified, but additives settle out and adhesive performance deteriorates

Engineering Contradiction:

Improvestorage durationVSAvoidadhesive uniformity

Core Design Contradiction:

Duration of action of stationary objectVSStability of the object's composition

Solution Approach 1:

By segmenting the adhesive into separate solid additive and liquid solvent components, the system eliminates the settling problem that occurs in pre-mixed adhesives. The solid components remain stable in their packaged form until mixing, ensuring composition stability regardless of storage duration.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adhesive components are designed to be self-stabilizing in their separate states. The solid additive components maintain their integrity without requiring active management, and the solvent remains ready for use, allowing the system to maintain stability automatically during storage without intervention.

Inventive Principle:

Principle #25Self-service

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 approach ensures consistent, effective adhesive production with reduced waste and storage needs, improving uniformity and effectiveness while avoiding freezing-related damage and remixing requirements.

Implementation Method 1

mixing the volume of the solvent to disperse the adhesive additive components and the adhesive filler components within the volume of the solvent

Methodology Applied

Scientific EffectDispersion: Dispersion (of waves)

Implementation Method 2

One or both of the first container and the second container may be dissolvible in the solvent such that introduction of one or both of the adhesive additive components and the adhesive filler components into the volume of the solvent may include placing the respective container into the volume of the solvent

Methodology Applied

Scientific EffectDissolution: Solvation

Data Source

PatentUS20230348755A1Method of blending adhesive components at the job site for roofing applications

Publication Date: 2023.11.02 JOHNS MANVILLE CORP

AI summary

A method for preparing an adhesive at a jobsite may include introducing a pre-packaged quantity of adhesive additive components to a volume of a solvent. The method may include introducing a pre-packaged quantity of adhesive filler components to the volume of the solvent. The method may include mixing the volume of the solvent to disperse the adhesive additive components and the adhesive filler components within the volume of the solvent to produce an adhesive.