Fire Retardant Thermal Insulation Strip

Fire Retardant Thermal Insulation Strip is used between separated aluminum sections to interrupt direct metal-to-metal heat conduction while adding a flame-retardant material option to the thermal break system. Jinxing, a China manufacturer and supplier of polyamide thermal break strips, produces profiles for aluminum extrusion systems where thermal insulation, profile strength, dimensional control and fire-related material requirements need to be considered together.

What Makes Fire Retardant Thermal Insulation Strip Different?

A conventional thermal break strip mainly focuses on separating the interior and exterior aluminum sections. A fire-retardant version adds another material requirement: the strip must be formulated to resist ignition and limit flame propagation while still maintaining the mechanical properties needed inside the aluminum assembly.

This makes the material selection more demanding than simply choosing a low-conductivity plastic. The strip needs to remain suitable for profile insertion, rolling and long-term service after it has been assembled into the aluminum system.

PA66 GF Reinforcement for Structural Stability

Jinxing's thermal break strips use PA66 nylon with glass-fiber reinforcement as the base material. The glass fiber improves the rigidity and mechanical stability of the polyamide profile, which is important because the strip is mechanically locked into aluminum profile cavities rather than used as a loose insulation layer.

For fire-retardant applications, the material formulation can be selected according to the required performance of the finished aluminum system. The specific fire-performance grade should be confirmed according to the project specification and required testing standard.

Core Product Advantages

· Flame-Retardant Material Option — Designed for aluminum systems where fire performance is an additional material requirement.

· Thermal Separation — Interrupts the continuous aluminum path between the interior and exterior sections to reduce direct heat conduction.

· Glass-Fiber Reinforced PA66 — Provides the rigidity and mechanical stability required for profile assembly.

· Stable Profile Geometry — Controlled extrusion and cooling processes help maintain the cross-sectional dimensions needed for accurate profile insertion.

· Suitable for Customized Sections — Different cross-sectional geometries can be developed according to aluminum profile drawings and installation requirements.

Where Fire Retardant Thermal Insulation Strips Are Used

The strip is mainly considered for thermally broken aluminum systems where thermal insulation and fire-related material performance are both relevant.

Aluminum Windows

Used between inner and outer aluminum sections to create a thermal break while providing a flame-retardant polyamide material option.

Aluminum Doors

Suitable for door profile systems that require a mechanically stable thermal break strip and additional consideration of fire performance.

Curtain Wall Systems

Can be used in selected thermally separated curtain wall profiles, particularly where the material specification of the thermal break component is part of the overall façade fire-performance design.

Special Aluminum Extrusions

For non-standard profiles, the strip cross-section can be developed around the actual aluminum cavity, locking geometry and assembly method.

The Strip Must Match the Aluminum Profile

Fire-retardant performance alone does not determine whether a thermal insulation strip is suitable for an aluminum extrusion.

The cross-section must correspond to the profile cavity, including:

· Strip width and thickness

· Locking or engagement geometry

· Insertion direction

· Aluminum cavity dimensions

· Required mechanical engagement

· Profile rolling conditions

· Space available around the thermal break

For this reason, Jinxing can work from aluminum profile drawings or samples when a standard strip does not provide the required cross-section.

Fire Performance Should Be Specified by Test Requirement

“Fire retardant” is not a single universal performance level. Different projects may require different fire-test methods, classifications or material formulations.

When ordering Fire Retardant Thermal Insulation Strip, buyers should provide the applicable fire-performance requirement together with the aluminum profile information. Jinxing can then evaluate the material formulation and profile design against the specified requirement rather than treating all fire-retardant applications as the same.

This approach is particularly relevant for curtain wall and façade projects, where the fire performance of individual components may need to be considered as part of the complete system.

Manufacturing and Quality Control

Jinxing controls the production process from material preparation through extrusion, cooling, shaping and cutting.

For PA66-based thermal break strips, incoming materials can be checked for parameters such as melt flow index, glass-fiber content and moisture. During extrusion, production parameters including temperature, pulling speed and cooling conditions are controlled to maintain the required profile geometry.

Finished strips are inspected for cross-sectional dimensions and surface defects. Jinxing also carries out performance testing according to applicable requirements, including mechanical properties, dimensional characteristics and resistance to temperature, water and aging where specified.

Ordering Information

For a Fire Retardant Thermal Insulation Strip, it is useful to provide the following information when requesting a quotation or technical evaluation:

FAQ

What is a Fire Retardant Thermal Insulation Strip?

It is a thermal break profile made from a flame-retardant polyamide material. It separates the inner and outer aluminum sections while adding fire-performance requirements to the thermal break material.

Is PA66 GF25 suitable for fire-retardant thermal break applications?

PA66 GF25 provides the mechanical and dimensional characteristics commonly required for aluminum thermal break profiles. For a fire-retardant version, the specific material formulation and required fire-performance level should be confirmed according to the project specification.

Where are fire-retardant thermal insulation strips used?

Typical applications include thermally broken aluminum windows, doors, curtain walls and other aluminum extrusion systems where both thermal separation and fire performance are required.

Can Jinxing make a customized fire-retardant profile?

Yes. Jinxing can develop non-standard cross-sections according to aluminum profile drawings or samples, including customized dimensions, shapes and selected production requirements.

Can the strip be supplied in different lengths?

Yes. Jinxing can supply standard straight strips and can also provide cut-to-length processing according to the customer's requirements.

What fire-performance standard does the strip meet?

The applicable fire-performance standard depends on the project and destination market. Buyers should provide the required test method or classification so the material formulation and testing requirements can be evaluated accordingly.