Swelling-Based Rubber Removal From Metal Components

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Solution Overview

Problem

Existing methods for removing vulcanized rubber from metal components are inefficient and often damage the metal, making reuse or recycling difficult.

Innovation Solution

A process involving exposure to a swelling agent that swells the vulcanized rubber, followed by separation from the metal component, optionally with the use of a softening solvent to weaken the adhesive bond, allowing for the rubber to be removed without damaging the metal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If traditional methods such as sawing or chiseling are used to remove vulcanized rubber, then the rubber can be removed from the metal component, but the metal component is damaged and suitable for reuse is compromised

Engineering Contradiction:

Improverubber removal completenessVSAvoidmetal component reusability

Core Design Contradiction:

Loss of substanceVSReliability

Solution Approach 1:

The patent replaces mechanical removal methods (sawing, chiseling) with a chemical process using swelling agents. The swelling agent penetrates the vulcanized rubber and causes it to swell and detach from the metal substrate, eliminating mechanical damage to the metal component while achieving complete rubber removal.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The swelling agent acts as an intermediary substance that facilitates the separation of rubber from metal. It interacts with the rubber material to cause swelling and bond weakening, enabling non-destructive removal without direct mechanical contact between the removal tool and the metal component.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of substance

If excessive heat or furnace burning is applied to remove rubber, then the rubber is removed from the metal component, but the metal component may be damaged or distorted

Engineering Contradiction:

Improverubber removal effectivenessVSAvoidmetal component dimensional stability

Core Design Contradiction:

Loss of substanceVSManufacturing precision

Solution Approach 1:

The patent replaces thermal removal methods (furnace burning, excessive heating) with a chemical swelling process. The swelling agent chemically interacts with the rubber at ambient or controlled temperatures, achieving complete rubber removal without subjecting the metal component to damaging heat that would cause distortion or dimensional changes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the removal mechanism from thermal energy input to chemical interaction. By using swelling agents that chemically interact with the rubber material, the process achieves effective rubber removal at controlled temperatures, preventing thermal damage and dimensional instability in the metal component.

Inventive Principle:

Principle #35Parameter changes

3Loss of substance

If ammonia or amine is used to dissolve the bond between rubber and metal, then the rubber can be removed, but the process requires complex chemical handling and may not completely remove the rubber

Engineering Contradiction:

Improverubber removal effectivenessVSAvoidchemical handling complexity

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

The patent changes the chemical mechanism from bond dissolution (ammonia/amine) to polymer swelling. The swelling agent penetrates and swells the vulcanized rubber polymer structure, causing physical detachment and complete removal. This approach simplifies chemical handling while achieving more complete rubber removal compared to bond dissolution methods.

Inventive Principle:

Principle #35Parameter changes

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

Effectively separates vulcanized rubber from metal components, enabling the metal to be reused or recycled without damage, and allows for further processing of the rubber.

Implementation Method 1

exposing the part to a swelling agent for a period of time sufficient to cause the vulcanized rubber to absorb the swelling agent at a swelling ratio of between 1.5 and 3 in order to swell the rubber

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

the solvent dissolves or softens a layer bonding the vulcanized rubber to the metal part

Methodology Applied

Scientific EffectDissolution: Solvation

Data Source

PatentUS20260001108A1Removing vulcanized rubber from metal components

Publication Date: 2026.01.01 CAN CLEANTECH

AI summary

Vulcanized rubber can be removed from a metal component such as a pipe by exposing the vulcanized rubber to a swelling agent. The vulcanized rubber absorbs the swelling agent. causing the rubber to swell and put stress on the bond between the rubber and metal. After a sufficient period of time. the vulcanized rubber can be easily removed from the metal component.