Polyiso Insulation Block Facers With Fire-Resistant Plastic Skins

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Solution Overview

Problem

Current polyisocyanurate insulation block facers are fragile, prone to damage, and pose environmental and health risks, requiring additional coverboards for protection, while existing materials like glass reinforced felt and coated glass facers have poor wind uplift, moisture, and fire performance.

Innovation Solution

Utilizing amorphous high-performance plastics such as polyphenylsulfone, polyetherimide, or polysulfone, or vulcanized fiber as facers for polyisocyanurate insulation blocks to provide enhanced strength, chemical resistance, and fire protection, eliminating the need for coverboards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If glass reinforced felt facers are used, then manufacturing cost is reduced, but wind uplift performance and moisture resistance deteriorate

Engineering Contradiction:

Improvemanufacturing costVSAvoidwind uplift performance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent uses a composite facer structure combining organic fibers (cellulose, polyester) with inorganic additives (titanium dioxide, zinc oxide) and resin binders. This composite approach provides both cost-effectiveness and improved wind uplift resistance through the interlocking fiber matrix and adhesive bonding properties of the resin system.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent modifies the physical and chemical parameters of the facer material by controlling fiber length (1-10 mm), resin content (5-20% by weight), and adding hydrophobic coatings. These parameter changes enhance wind uplift performance while maintaining manufacturing feasibility and cost-effectiveness.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If glass reinforced felt facers are used, then manufacturing cost is reduced, but moisture and mold resistance deteriorate

Engineering Contradiction:

Improvemanufacturing costVSAvoidmoisture and mold resistance

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent applies hydrophobic treatments to the facer material, including water-repellent coatings and moisture-resistant resin binders. These modifications change the surface energy and porosity parameters of the facer, providing effective moisture and mold resistance while keeping the base material cost-effective.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts potentially harmful organic fibers into beneficial moisture-resistant structures by treating them with hydrophobic coatings and resin impregnation. The same organic matrix that provides flexibility is transformed into a moisture-barrier system through chemical treatment.

Inventive Principle:

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

3Ease of manufacture

If glass reinforced felt facers are used, then manufacturing cost is reduced, but fire performance deteriorates

Engineering Contradiction:

Improvemanufacturing costVSAvoidfire performance

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates fire-retardant inorganic materials (titanium dioxide, zinc oxide, aluminum hydroxide) into the organic fiber matrix. This composite structure provides fire resistance through the thermal stability of inorganic compounds while maintaining the cost-effectiveness and processability of organic-based facers.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent transforms the flammability risk of organic fibers into a fire-safe material by incorporating fire-retardant additives that release water vapor and form protective char layers during heating, converting the harmful combustion process into a protective fire-retardant mechanism.

Inventive Principle:

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

4Ease of manufacture

If traditional facers are used, then ease of manufacture is maintained, but mechanical strength and damage resistance deteriorate

Engineering Contradiction:

Improveease of manufactureVSAvoidmechanical strength

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The patent increases mechanical strength by optimizing fiber length (1-10 mm for tear resistance), resin content (5-20% by weight for bonding strength), and fiber orientation. These parameter adjustments maintain compatibility with existing manufacturing processes while dramatically improving tensile and tear strength.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite structure combining short synthetic fibers (polyester, polypropylene) with natural fibers (cellulose) and resin binders. This multi-component composite provides enhanced mechanical properties including tensile strength, tear resistance, and flexibility while remaining manufacturable using conventional web-forming and lamination processes.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS20260027811A1Facer for polyisocyanurate insulation block

Publication Date: 2026.01.29 CARLISLE CONSTRUCTION MATERIALS LLC

AI summary

A polyisocyanurate insulation block assembly, including: (a) a foamed block of polyisocyanurate insulation; (b) a bottom facer underneath the foamed block of polyisocyanurate insulation; and (c) a top facer on top of the foamed block of polyisocyanurate insulation, wherein the top facer comprises an amorphous high performance plastic or a vulcanized fiber.