Examining the Appearance: The Secrets of the Cross-Section
Just as observing tree rings reveals a tree's age, the cross-section of thermally broken aluminum profiles holds the secrets of their manufacturing process:
- Injection Molding: The insulation cavity is full and smooth, like a transparent box filled with jelly, with a clear boundary between the molten compound and the aluminum.
- Strip Molding: Visible traces of nylon strips running through it, like a dark strip sandwiched in the middle.
- Tactile Differences: The surface of injection molding is smooth like ceramic, while the seams of strip molding may have a slight unevenness.
Understanding the Principle: The Logic Behind the Process
The two processes are like different methods of making a cake:
- Injection Molding Technology: Liquid insulation compound is injected into the cavity, and after curing, it forms a complete insulation layer, similar to the setting process of a mousse cake.
- Nylon strip bonding technology: Nylon strips are mechanically rolled to bond with aluminum, creating a physical bond similar to inserting a bookmark into a book.
- Key difference: Adhesive injection uses chemical bonding, while nylon strip bonding relies on mechanical bonding. This determines their anti-aging performance.
- Performance comparison: A tortoise and hare race in the thermal insulation world.
Although both are called thermally broken aluminum, the different processes are like different competitors
- Stability: Adhesive injection has stronger resistance to deformation, while nylon strip bonding may experience slight expansion and contraction under large temperature differences.
- Sound insulation: The continuous adhesive of adhesive injection better blocks sound wave transmission.
- Cost comparison: Nylon strip bonding is a mature and cost-effective process, while adhesive injection requires a larger investment in equipment but has a higher yield.
- Maintenance convenience: Nylon strip bonding allows for partial replacement of the insulation strip, while adhesive injection requires overall treatment.