Views: 0 Author: Site Editor Publish Time: 2026-09-01 Origin: Site
The polyurethane foaming machine is dedicated industrial equipment for cavity filling of broken bridge aluminum thermal break profiles in door and window manufacturing. It mixes two component PU raw materials (polyol A and isocyanate B) in precise proportion, injects liquid polyurethane into the hollow cavity of aluminum profiles, and realizes in situ foaming and curing inside profiles.
After foaming, closed cell PU foam fills the internal cavity completely. It eliminates air convection inside thermal break chambers, greatly improving thermal insulation and sound insulation performance of aluminum doors and windows. Meanwhile, it enhances overall profile rigidity, prevents moisture condensation inside cavities, and avoids thermal strip detachment or failure caused by water accumulation and freezing thaw cycles.
Two component polyurethane raw materials are pumped from independent storage tanks to the high speed mixing head. Under controlled temperature and pressure, A and B materials are fully mixed and then injected into profile cavities. Liquid PU expands rapidly through chemical reaction, fills the whole cavity, and cures into stable rigid foam within short time.
1. Precise Metering & Proportion Control: Servo driven metering pumps guarantee stable material ratio, adjustable injection volume to fit various profile cavity sizes.
2. Automatic Mixing Head Cleaning: Reduce blockage risk, support continuous mass production.
3. Constant Temperature Raw Material System: Independent heating for A/B tanks, stable foaming quality under different ambient temperatures.
4. PLC Touch Screen Operation: Simple parameter setting, low liquid level alarm and fault diagnosis functions.
5. High Production Efficiency: Matches online production line; profiles can be processed continuously to satisfy large batch door window production.
Mainly applied for cavity filling of PA66 GF25 thermal break aluminum profiles for energy saving doors, windows and curtain walls. It cooperates with thermal strip assembly process to upgrade the thermal insulation grade of finished aluminum profiles, widely adopted in high end residential and commercial building projects.
· Block internal air convection, lower U value of doors & windows
· Closed cell foam, non water absorbent, anti condensation
· Improve profile structural strength and shear resistance
· Optimize acoustic insulation performance
