Buried Pipe Insulation Wrap With Velcro Fabric Retention

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Solution Overview

Problem

The existing methods for protecting buried steel pipes from corrosion, particularly at welding joints and fittings, are inadequate as the adhesive duct tape used to secure the protective fabric layer loses adhesion due to environmental factors, leading to loosening and exposure of the insulating tape, which results in water infiltration and pipe corrosion.

Innovation Solution

A three-layer protection system comprising an adhesive insulating tape, a non-woven synthetic faux wool fabric protector, and a Velcro hooks tape to securely hold the fabric in place, ensuring mechanical and adhesive integrity against soil and mechanical impacts during burial.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If duct tape is used to secure the protective fabric layer, then the fabric can be easily fastened, but the adhesion is lost due to environmental factors causing the fabric to loosen

Engineering Contradiction:

Improveease of fasteningVSAvoidadhesion retention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The protective system is divided into multiple functional layers: the protective fabric layer for corrosion protection, and the Velcro® tape layer for secure fastening. This segmentation allows each layer to perform its specific function optimally without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adhesive-based duct tape is replaced with a mechanical fastening system using Velcro® tape with hooks and loops. This mechanical system provides reliable retention without the adhesion loss problems that affect pressure-sensitive adhesives in harsh environmental conditions.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Stability of the object's composition

If the protective fabric layer is loosened, then the insulating tape becomes exposed to water, but corrosion protection is compromised

Engineering Contradiction:

Improvefabric position stabilityVSAvoidwater infiltration

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The Velcro® tape is applied to secure the protective fabric layer before the pipe is buried and exposed to harsh environmental conditions. This preliminary fastening prevents the fabric from loosening during backfilling and subsequent exposure to water and soil stresses.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The protective fabric layer acts as a cushioning barrier that protects the insulating tape from direct exposure to harmful factors. The Velcro® fastening system ensures this protective barrier remains in place, preventing water infiltration and corrosion before they can occur.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Ease of operation

If adhesive tape is used in hot climate, then initial fastening is effective, but adhesion is lost over time

Engineering Contradiction:

Improveinitial fastening effectivenessVSAvoidfastening duration

Core Design Contradiction:

Ease of operationVSDuration of action of stationary object

Solution Approach 1:

The adhesive-based fastening system is replaced with a mechanical interlocking system using Velcro® tape. The hook-and-loop mechanism provides durable fastening that is not affected by high temperatures, UV exposure, or moisture, maintaining its fastening capability throughout the service life of the pipe.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention replaces the temporary adhesive solution with a permanent mechanical fastening system. The Velcro® tape is designed to remain effective for the entire operational lifespan of the pipe, eliminating the need for replacement or re-application.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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

The solution effectively maintains the integrity of the insulating tape, preventing corrosion and mechanical damage by securely fastening the protective fabric layer, thus extending the pipe's longevity and preventing leaks.

Implementation Method 1

Velcro hooks tape, equipped with fine hooks, that grip and securely hold the second layer in place

Methodology Applied

Scientific EffectMechanical interlocking: Mechanical Fastener

Implementation Method 2

a first insulating tape with an adhesive on one side

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS20240369175A1Method for fixing the protective fabric on insulation tape for buried pipes

Publication Date: 2024.11.07 ABABUTAIN HAMAD

AI summary

A method for protecting underground pipes by applying three layers of different materials to an outer surface of a pipe is accomplished by wrapping three layers of different materials on the pipe outer surface. The three layers are: The first layer: which surrounds the pipe, is the insulating tape known as cold wrap tape. The second layer: which follows the first layer, made from non-woven synthetic wool, and called the protector. The third layer: the fixing tape made of synthetic fabric that contains fine hooks that can grip tight the second layer—the protector—and prevent it from delamination and falling. Second and third layers act together as Velcro to securely fix and protect the first layer (cold roll tape) from the mechanical damage of soil and tamping over the pipe and UV during the of installation period and before backfilling.