Foam Seam Tape for Insulated Panels and Moisture Sealing

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Solution Overview

Problem

Existing building wall and roof assemblies face challenges in ensuring insulation continuity and moisture resistance across seams between insulated panels, leading to issues like moisture intrusion, mold growth, and improper installation of water-resistant barriers, which are labor-intensive and prone to failures.

Innovation Solution

A foam-based tape with adhesive layers is applied to the seams between insulated panels, creating a continuous insulation envelope and moisture seal, using a foam core that compresses to ensure secure bonding to underlying and overlying panels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional water-resistant barrier systems are installed separately on site, then moisture protection is provided, but installation is labor-intensive and prone to failures

Engineering Contradiction:
Improveinstallation reliabilityVSAvoidinstallation efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent combines the water-resistant barrier function with the insulation panel itself by integrating a foam-based tape directly onto the panel surface. This merging eliminates the need for separate installation of traditional barrier systems, thereby improving both installation efficiency and reliability through a single integrated component that ensures consistent moisture protection without labor-intensive separate application steps.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The foam-based tape is pre-applied to the insulation panels at the factory before shipment to the construction site. This preliminary action ensures that the water-resistant barrier is already in place and properly positioned, eliminating on-site installation variability and ensuring consistent moisture protection without requiring additional labor during construction.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If seams between insulated panels are left uncovered, then installation is simple, but insulation continuity and moisture resistance are compromised

Engineering Contradiction:
Improveinsulation continuityVSAvoidseam sealing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The foam-based tape is applied specifically at the seam locations between insulation panels, segmenting the sealing function to where it is most needed. This targeted approach maintains insulation continuity and moisture resistance at critical junction points without requiring complex sealing systems across the entire panel surface, thereby ensuring reliability while minimizing added complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The foam-based tape acts as an intermediary element that bridges the gap between adjacent insulation panels at their seams. This mediator provides both insulation continuity and moisture resistance at the joint interface, solving the seam protection problem without requiring complex sealing mechanisms while maintaining the simplicity of panel installation.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Strength

If adhesive layers are applied directly to rigid surfaces, then bonding is strong, but adhesion fails on uneven or porous substrates

Engineering Contradiction:
Improveadhesive bonding strengthVSAvoidsubstrate compatibility
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The patent uses a foam-based material that can change its physical parameters (density, compressibility, surface area) to adapt to different substrate conditions. The foam tape can compress to conform to uneven surfaces and expand to fill porous gaps, maintaining strong adhesive bonding across diverse substrates including OSB, plywood, and other irregular surfaces by adjusting its physical state rather than requiring perfect substrate uniformity.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The foam-based tape is a composite material combining foam core with adhesive layers, creating a multi-functional element that provides both mechanical compliance for substrate adaptation and chemical bonding for strong adhesion. This composite structure enables the tape to simultaneously achieve strong bonding strength and versatility across different substrate types and surface conditions.

Inventive Principle:
Principle #40Composite materials

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 foam tape maintains insulation integrity and prevents moisture intrusion, enhancing the building envelope's durability and safety by ensuring consistent adhesion and seamless installation, even in inclement weather.

Implementation Method 1

A foam-based tape with adhesive layers is applied to the seams between insulated panels

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 2

using a foam core that compresses to ensure secure bonding to underlying and overlying panels

Methodology Applied
Scientific EffectCompression: Compression

Data Source

PatentUS20250347105A1Foam-based tape for insulated panels
Publication Date: 2025.11.13 LOUISIANA PACIFIC CORP
  • US20250347105A1 patent drawing
  • US20250347105A1 patent drawing
  • US20250347105A1 patent drawing

AI summary

A foam-based tape that is applied to the underlying structure at a location or locations where adjacent insulated structural sheathing panels or insulated siding panels meet and form a seam between adjacent edges. The tape may be two-sided, i.e., a foam core with both sides comprising an adhesive layer. The tape is applied to the underlying structure, which may be studs, framing, or an underlying structural sheathing layer, by operation of the adhesive on one side, then the liner on the opposite side is removed prior to installation of the overlaying panels. The overlaying panels are installed so that the seam formed between two adjacent edges lies along the foam tape, and is adhesively secured thereto. The foam core allows for sufficient compressibility of the tape to ensure the tape properly bonds to the underlying structural elements and the overlaying panels.