Adhesive composition and rubber reinforcing material

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Solution Overview

Problem

Existing adhesive compositions for reinforcing rubber materials, such as tire cords, often contain harmful resorcinol-formaldehyde components and suffer from inadequate adhesive strength and coating processability, posing health risks and inefficiencies in manufacturing.

Innovation Solution

An adhesive composition comprising latex, polyurethane, an amine-based adhesion promoter, and a water-containing solvent, formulated to achieve a specific viscosity range of 2.50 to 3.00, ensuring excellent adhesive strength and coating processability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If resorcinol-formaldehyde adhesive is used to improve adhesive strength, then adhesive strength is improved, but harmful factors increase due to carcinogenic components

Engineering Contradiction:

Improveadhesive strengthVSAvoidharmful factors

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent removes the harmful resorcinol-formaldehyde components from the adhesive composition while retaining the essential adhesive functionality through alternative eco-friendly ingredients, directly eliminating the carcinogenic elements that cause harmful effects

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent transforms the challenge of eliminating harmful RF components into an opportunity to develop a superior eco-friendly adhesive system using natural and biodegradable materials that provide both safety and enhanced performance

Inventive Principle:

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

2Manufacturing precision

If excessive solvent is used to improve coating uniformity, then coating uniformity is improved, but adhesive strength decreases due to excessive flowability

Engineering Contradiction:

Improvecoating uniformityVSAvoidadhesive strength

Core Design Contradiction:

Manufacturing precisionVSStrength

Solution Approach 1:

The patent optimizes the solvent content to a specific range (60-85 wt%) and adjusts the viscosity to 20-50 cP at 25°C, creating a balanced composition that achieves both uniform coating application and sufficient adhesive strength without excessive flowability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite adhesive system combining multiple polymers (polyvinyl butyral, polyvinyl alcohol, carboxymethyl cellulose) with controlled solvent content, creating a multi-component formulation that simultaneously provides coating uniformity and adhesive strength

Inventive Principle:

Principle #40Composite materials

3Device complexity

If components are not uniformly mixed to simplify the process, then process complexity is reduced, but adhesive strength is insufficient due to inadequate mixing

Engineering Contradiction:

Improveprocess complexityVSAvoidadhesive strength

Core Design Contradiction:

Device complexityVSStrength

Solution Approach 1:

The patent formulates the adhesive composition with specific viscosity parameters (20-50 cP at 25°C) that inherently promote uniform mixing and distribution of components, eliminating the need for complex mixing equipment or processes while ensuring adequate homogeneity for sufficient adhesive strength

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12473468B2Adhesive composition and rubber reinforcing material

Publication Date: 2025.11.18 KOLON INDUSTRIES INC

AI summary

The present invention relates to an adhesive composition including a latex (A), a polyurethane (B), an amine-based adhesion promoter (C), and a water-containing solvent (G). The composition is eco-friendly, has a low risk of fire, and has excellent adhesive strength.