What kind of thermal break strips do brand-name broken bridge aluminum systems use?
Release date:
2025-09-01
The editor’s answer for you is that all genuine brand斷橋 aluminum doors and windows use PA66GF25 thermal breaks, while counterfeit or low-quality ones rely on PVC thermal breaks—there’s a significant difference between the two. Surprisingly, there really is a distinction. So, how should consumers tell the real from the fake when making their purchase?
The PA66GF25 thermal break strip is a structural component widely used worldwide in stick-type thermally broken aluminum door and window profiles. Its key performance characteristics must align perfectly with the断桥 aluminum profile, effectively delivering superior insulation while also meeting stringent demands for lateral tensile strength—both under normal operating conditions and in extreme environmental temperatures. Additionally, it’s crucial to minimize the water absorption properties of PA66. Since the thermal break strip is integrated into the aluminum profile via a roll-pressing process, its hardness and coefficient of linear expansion must be carefully balanced; moreover, the material should even satisfy the high-temperature resistance requirements of over 250°C, as specified by international standards for processes that involve first inserting the strip and then applying surface coatings.
So, WARREN uses PA66GF25 for all its thermal break strips in aluminum doors and windows—this is also the principle we’ve consistently adhered to: crafting premium, quiet windows and doors exclusively with the finest raw materials.
2. Another key difference is that nylon strips made of PA66 are non-flammable, whereas PVC strips will catch fire almost immediately, producing a small flame—and you’ll even notice the typical smell of burning plastic. With a bit of careful observation, everyone can easily tell the difference between nylon and PVC strips.
The PA66GF25 thermal break strip is a structural component widely used internationally in stick-type thermally broken aluminum door and window profiles. Its key performance characteristics must align perfectly with the断桥 aluminum profile, effectively demonstrating superior insulation performance while also meeting rigorous demands for lateral tensile strength under both normal operating conditions and extreme environmental temperatures. Additionally, it’s crucial to minimize the water absorption properties of PA66. Since the thermal break strip is integrated into the aluminum profile via a roll-pressing process, its hardness and coefficient of linear expansion must be carefully considered—furthermore, the material should even satisfy the high-temperature resistance requirements of over 250°C, as dictated by international standards for processing that involve first inserting the strip and then applying surface coatings.
PA66 is a series of modified engineering plastic alloys; compared to other engineering plastics, nylon (PA66) boasts the following characteristics:
1. High melting point, excellent heat resistance, and self-extinguishing properties.
2. It exhibits excellent balance in terms of toughness, durability, electrical performance, and other physical properties.
3. Excellent oil resistance and chemical resistance properties.
4. Exhibits excellent wear resistance, creep resistance, and aging durability.
However, we must clearly understand that unmodified PA66 material does not match aluminum alloy in terms of tensile strength and coefficient of linear expansion. Therefore, we first need to modify the PA66 raw material to ensure it aligns with bridge-structured aluminum profiles, while also enhancing its transverse tensile strength across various conditions—ultimately meeting the weathering performance requirements for practical applications.
So, WARREN uses PA66GF25 for all its断桥 aluminum door and window thermal break strips—this is also the principle we’ve consistently adhered to: crafting premium, quiet windows and doors exclusively with the finest raw materials.
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Contact Address: No. 7, Industrial Avenue East, Songxia Industrial Park, Shishan Town, Nanhai District, Foshan City
Warren Doors and Windows, south of Fangshan Road and west of Dongtai Road, Dongcheng Subdistrict, Linqu County, Weifang City, Shandong Province
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