Weatherproof Thermal Break Strips

Weatherproof Thermal Break Strips serve as an indispensable core material for high-performance energy-efficient windows, doors and curtain walls, directly determining the overall U-factor (thermal transmittance) of fenestration systems. The high-strength PA66 GF25 thermal breaks constitute a critical safety component in large-scale fenestration and curtain wall applications, ensuring structural integrity and wind load resistance performance.

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Thermal Break Strips Break Strips Weatherproof Break Strips

Product Description

Product Overview

Weatherproof Thermal Break Strips are the indispensable core material for high-performance energy-efficient building fenestration systems, specially engineered for aluminium windows, curtain walls and broken bridge aluminium profiles by Shuangming Plastic. Our strips are primarily crafted from PA66 GF25 (Polyamide66 Reinforced by 25%Glass Fiber), complying with the national standard GB/T 23615.1-2009 and even exceeding key technical indicators of this norm. As a critical safety component for large-scale fenestration and curtain wall applications, these strips directly determine the overall U-factor (thermal transmittance) of window and door systems, while the premium PA66 GF25 pellets for thermal break strips can reduce traffic noise penetration by 6dB for street-facing windows, greatly enhancing acoustic comfort. What’s more, our Weatherproof Thermal Break Strips ensure excellent structural integrity and wind load resistance, making them the first choice for energy-saving building projects.

Model NO.	SM-I320	Customized	Customized
Material	Polyamide66 Reinforced by 25%Glass Fiber	Color	Single Color（Black）
Application	for Thermal Break Aluminum Profile	Raw Material	PA66 GF25 Granules
Markets Served	Windows & Doors	Technical Performance	GB/T 23615.1-2009
Print	Customized Laser Printing	Transport Package	Roll or Linear
Material Properties	High Temp Resistance （≥220 °C）	HS Code	3926909090

PA66 GF25 Pellets for Thermal Break Strips reduce traffic noise penetration by 6dB in street-facing windows, significantly improving acoustic comfort.

Weatherproof Thermal Break Strips

Key Features & Core Benefits

Superior Thermal Insulation & Weatherproof Performance

Our Weatherproof Thermal Break Strips boast outstanding high temperature resistance (≥220 °C) and low thermal conductivity, effectively blocking heat transfer between indoor and outdoor spaces and improving the energy efficiency of buildings. With extremely low water absorption, the strips avoid moisture-induced dimensional variation and insulation performance deterioration, maintaining stable weatherproof performance in various harsh outdoor environments.

Exceptional Mechanical Strength & Durability

Reinforced with 25% glass fiber, the PA66 GF25 strips deliver superior mechanical properties, including a longitudinal tensile strength of ≥84MPa and an unnotched impact strength of ≥40KJ/m², all exceeding national standard requirements. The strips also have excellent aging resistance and dimensional stability, ensuring no deformation and long-term operational stability under load-bearing conditions for doors and windows.

Environmental & International Standard Compliance

All our thermal break strips meet EU environmental protection and building energy conservation standards, in addition to passing GB/T 23615.1-2017 certification. The non-toxic raw materials and precision production process make the product eco-friendly, aligning with modern green building development needs.

Product Advantage

Advantages of Shuangming Plastic PA66 GF25 Thermal Break Strips

Compared with metal and other high-performance thermal insulation materials, our Fibre Glass Polyamide Insulation Strips achieve comparable performance while offering significant cost advantages. Our factory adopts high-efficiency production technology for precision extrusion, enabling the manufacturing of geometrically complex, custom extruded polyamide profiles to meet personalized project needs. We also provide customized laser printing service for the strips, and the easy installation process shortens construction cycles for builders. Under normal use, the service life of our Polyamide 66 Thermal Break Profiles exceeds 15 years, with strong weather resistance and anti-aging performance.

High Precision Polyamide PA66 Thermal Insulation Strip from our factory has high strength and great dimensional stability.

High Precision Polyamide PA66 Thermal Insulation Strip

Technical Parameters

NO.	Item	Unit	GB/T 23615.1-2009	SM-Technical specification
1	Density	g/cm³	1.3±0.05	1.28-1.35
2	Linear expansion coefficient	K⁻⊃1;	(2.3-3.5)×10⁻⁵	(2.3-3.5)×10⁻⁵
3	Vicat softening temperature	°C	≥230	≥240
4	Melting point(0.45MPa)	°C	≥240	≥255
5	Testing for tensile cracks	-	No cracks	No cracks
6	Shore hardness	-	80±5	80-85
7	Impact strength(Unnotched)	KJ/m²	≥35	≥40
8	Tensile strength(longitudinal)	MPa	≥80	≥84
9	Elasticity modulus	MPa	≥4500	≥4600
10	Elongation at break	%	≥2.5	≥4
11	Tensile strength(transverse)	MPa	≥70	≥80
12	High temperature tensile strength(transverse)	MPa	≥45	≥50
13	Low temperature tensile strength(transverse)	MPa	≥80	≥85
14	Water resistance tensile strength(transverse)	MPa	≥35	≥45
15	Aging resistance tensile strength(transverse)	MPa	≥50	≥60

Our factory - made PA66 Thermal Break Strip for Broken Bridge Aluminum are perfect for window insulation systems.

High Precision Polyamide PA66 Thermal Insulation Strip

FAQ

FAQ About Weatherproof Thermal Break Strips

Q: What are the main advantages of PA66/PA6 Thermal Insulation Bars?

A: Our PA66 GF25 insulation strips are reinforced with 25% glass fiber, featuring low thermal conductivity and high mechanical strength. They can effectively block heat transfer, enhance the energy efficiency and durability of doors and windows, and also improve acoustic comfort for buildings.

Q: Which building products are suitable for this GF-Reinforced Nylon Insulation Strips?

A: It is applicable to various building doors and windows, such as broken bridge aluminium casement windows, sliding windows, as well as large-scale building curtain walls of different specifications.

Q: Does the product meet international building and energy-saving standards?

A: Yes. Our thermal break strips have passed GB/T 23615.1-2017 certification and fully comply with EU environmental protection and building energy conservation standards, meeting the insulation requirements of global building projects.