Multi Cavity Thermal Insulating 35.3 K3 Polyamide Profiles

Overview

The word "bridge" in the name "broken bridge aluminium" means "cold and hot bridge" in materials science, and "broken" represents an action word, which means "cutting off the cold and hot bridge".

Specifically speaking, aluminium alloy is a metal medium with strong thermal conductivity. When there is a big difference in temperature with the outside temperature, the aluminium alloy becomes a "bridge" for transferring heat. If this type of material is used to make doors and windows, it will have poor thermal insulation performance. However, the broken bridge aluminium is to break the aluminium alloy in the middle. The thermal conductivity of plastic is weaker than that of metal. Hard plastic is used to connect the broken aluminium alloy together. In this way, heat is not easy to flow to the whole material, so the thermal insulation will be better. This is the origin of the name "broken bridge aluminium (alloy)".

The 35.3-K3 thermal break strip is a high-performance, wide-format insulating profile made from 25% glass fiber-reinforced polyamide (PA66 GF25). With its 35.3 mm width and robust K3 structure, it is specifically designed for large and deep aluminum profiles in façade and window-wall systems. This profile effectively forms a thermal barrier, improves system energy efficiency, and enhances the structural stability of the assembly under various environmental conditions.

The 35.3-K3 thermal break strip is engineered for demanding structural and energy-saving applications, particularly in high-end and large-scale aluminum systems:

• Deep-Profile Curtain Wall Systems
  Ideal for unitized or stick curtain wall designs that utilize thick aluminum frames, where superior insulation and mechanical reinforcement are needed.

• Aluminum Window-Wall and Storefront Systems
  Used in systems that require wide thermal barriers to ensure energy compliance and prevent condensation in large glazed areas.

Product Advantages

• Extra-Wide Thermal Break (35.3 mm): Supports deeper profiles for better insulation

• High Structural Integrity: K3 structure resists bending and deformation under load

• Excellent Dimensional Stability: Ensures consistent performance through temperature cycles

Certifications and Standards

• Conforms to GB/T 23615.1-2009

• Fulfills JG/T 174-2005 technical requirements

• RoHS and REACH compliant for export markets

• Suitable for LEED, BREEAM, and other sustainable construction programs

Customization Services

• Custom width, shape, length, and color options

• Integration support for aluminum system suppliers and facade consultants

• OEM/ODM available for global building material brands