Polyurethane Foam Wall Structure Using Release Layer Platform

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Solution Overview

Problem

Current methods for fabricating wall structures with polyurethane foam backing lack efficiency in attaching the foam layer to the wall frame without additional coatings, leading to potential adhesion issues and incomplete filling of spaces within the frame.

Innovation Solution

A method involving a support platform with a release layer and overflow lips, where a polyurethane foam composition is applied through the wall frame's spaces, curing to form a backing layer that is then released from the platform, ensuring complete filling and attachment without external coatings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If polyurethane foam composition is applied without a support platform and release layer system, then the manufacturing process is simpler, but the foam layer cannot be securely attached to the wall frame and may not fill spaces completely

Engineering Contradiction:

Improveattachment reliabilityVSAvoidplatform and release layer complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

A release layer is introduced as an intermediary component between the support platform and the wall frame. This release layer enables the polyurethane foam to be applied and cured securely while allowing for clean release afterward, solving the attachment reliability issue without requiring direct bonding between the platform and foam.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The support platform and release layer are positioned and prepared in advance before applying the polyurethane foam composition. This preliminary setup ensures that the foam will be contained within the correct boundaries and attach properly to the wall frame, preventing incomplete filling and attachment issues.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If polyurethane foam is applied to fill wall frame spaces, then insulation coverage is improved, but the foam may overflow and require additional containment structures

Engineering Contradiction:

Improvespace filling precisionVSAvoidcontainment structure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The overflow lips are designed to automatically contain the polyurethane foam within the desired boundaries as it is applied. The foam self-regulates its flow and expansion within the confines of the lips and release layer, eliminating the need for additional containment structures while ensuring precise space filling.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The overflow lips provide localized containment at specific boundaries, allowing the foam to expand freely within the wall frame spaces while preventing overflow at critical locations. This localized constraint approach achieves precise space filling without requiring comprehensive containment structures throughout the entire assembly.

Inventive Principle:

Principle #3Local quality

3Strength

If additional coatings are applied to enhance adhesion, then attachment strength is improved, but the manufacturing process becomes more complex and time-consuming

Engineering Contradiction:

Improveadhesion strengthVSAvoidmanufacturing efficiency

Core Design Contradiction:

StrengthVSProductivity

Solution Approach 1:

The polyurethane foam composition is formulated to self-adhere to the wall frame and release layer without requiring additional coatings or adhesives. The foam's inherent properties enable strong attachment directly to the substrate, maintaining manufacturing efficiency while achieving the required adhesion strength.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The chemical composition and physical properties of the polyurethane foam are optimized to provide adequate adhesion to the wall frame and release layer. By adjusting the foam's chemical parameters and curing characteristics, strong attachment is achieved without adding external coatings, thus maintaining manufacturing efficiency.

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

This method ensures a robust polyurethane foam backing layer is securely attached to the wall frame, filling all defined spaces without the need for additional coatings, enhancing structural integrity and insulation efficiency.

Implementation Method 1

applying a polyurethane foam composition onto the release layer disposed on the first surface of the support platform by introducing the polyurethane foam composition through the one or more spaces in the wall frame and into the cavity

Methodology Applied

Scientific EffectFoam expansion: Foam

Implementation Method 2

curing the polyurethane foam composition to form a polyurethane foam layer thereby attaching the polyurethane foam layer to the wall frame

Methodology Applied

Scientific EffectCuring: Phase Change

Implementation Method 3

a release layer is disposed on the first surface of the support platform and is positioned between the first surface of the support platform and the wall frame

Methodology Applied

Scientific EffectRelease layer barrier: Physical Containment

Data Source

PatentUS9255400B2Polyurethane foam wall structure

Publication Date: 2016.02.09 HUNTSMAN INTERNATIONAL LLC

AI summary

A wall structure comprising a polyurethane backing is disclosed herein.