Insulating strips (thermal strips) are precision-engineered thermal barrier components primarily used in aluminum window, door, and curtain wall systems. Manufactured from high-strength, low thermal conductivity materials (such as polyamide PA66GF25), they are inserted between aluminum profiles to form a thermal break, effectively interrupting heat conduction paths. These strips deliver outstanding thermal insulation performance, significantly reducing heat transfer between indoor and outdoor environments, thus improving energy efficiency and meeting green building standards. With excellent mechanical strength, UV resistance, and corrosion resistance, they ensure long-term stability and reliability, supporting the creation of comfortable, energy-saving building envelopes while enhancing the overall structural safety and service life of architectural systems.
Insulating Strips form the thermal barrier between inner and outer aluminum profiles. They cut heat transfer, limit condensation, and support occupant comfort in windows, doors, and curtain walls. HOMI integrates strips through knurling and strip-rolling to achieve low U-values without sacrificing strength.
Lower U-values and improved energy efficiency
Condensation control and acoustic comfort
UV/weather stability with fit-for-assembly geometry
HOMI supplies polyamide insulating strips matched to I-, T-, C-, and multi-cavity geometries for aluminum thermal break profiles. Optional flame-retardant and color-stabilized grades support façade aesthetics and project compliance.
Reinforced PA66 with 25–30% glass fiber combines low thermal conductivity with high rigidity for load-bearing fenestration. It is engineered for UV and weather resistance and performs from about −40 to 120 °C. Materials are designed to comply with RoHS where applicable.
Geometry affects mechanical interlock and heat flow. Typical widths range from 10 to 60 mm with wall thickness tuned to system loads and assembly. HOMI co-develops groove profiles, serration patterns, and tolerances to ensure smooth rolling and consistent pull-out strength.
Insulating Strips are used in windows, doors, curtain walls, and skylights to lower Uf/U-values and reduce interior condensation. They also thermally separate equipment housings, HVAC casings, cold-chain panels, and transportation structures.
| Selection factor | What to consider | Guidance |
|---|---|---|
| Thermal performance | U/Uf targets, condensation | Use wider or multi-cavity designs to lower heat flow |
| Mechanical strength | Wind, sash, hardware loads | Select T or C shapes for stronger interlocks |
| Assembly fit | Groove, knurl, tolerances | Match width/wall; verify straightness for stable rolling |
| Environment & compliance | UV, weather, RoHS | Use UV-stabilized grades; specify project documentation |
HOMI delivers end-to-end support from profile design and DFM to prototyping, trial rolling, and mass production with integrated strip assembly.
Our intelligent factory includes 14 extrusion lines, precision CNC machining, and automated finishing for scalable quality. Corrosion performance is validated with up to 720-hour salt spray testing. An experienced R&D team conducts full-process checks, helping shorten time-to-market by about 30%.
Operational terms include typical lead time of 15–20 workdays, free new-die samples for approval, MOQ of 8–10 tons, and flexible payment by T/T or L/C at sight. Practices are designed to comply with standards such as ISO 9001 and RoHS where applicable.
Q: What material is standard and why?
A: Reinforced PA66 (25–30% GF) balances insulation, strength, and weather resistance for aluminum thermal breaks.
Q: How do I choose width and geometry?
A: Match thermal targets to wider or multi-cavity designs, and use T or C shapes when higher interlock strength is needed. Verify groove and knurl fit.
Q: Can HOMI provide trials and samples?
A: Yes. We support DFM reviews, prototype strips, strip-rolling trials, and lab testing before ramp-up.
Share drawings, target U-values, geometry, widths, tolerances, and volumes. As an aluminum manufacturer specializing in custom extrusion and insulating strip integration, HOMI provides engineering support, rapid samples, and validation. Ask about free new-die samples, 15–20 workday lead times, and flexible terms.
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