The application of spray polyurethane is one of the most efficient technologies for thermal insulation in roofs, metal structures, and industrial areas. However, with the regulatory and technological changes in the sector, the formulations underwent an important evolution: the replacement of traditional blowing agents with more efficient and sustainable solutions.
It was in this scenario that Amino developed its water-based spray formulations, designed to deliver technical performance, process stability, and excellent cost-effectiveness.
By eliminating the use of physical blowing gases in the formulation, these systems present higher yield during application and lower mass loss, ensuring real efficiency in the field.
Why are water-based spray systems more efficient?
Historically, many polyurethane formulations used blowing gases, such as 141B. With the advancement of technologies and the need for more efficient solutions, new alternatives emerged.
In Amino’s water-based spray systems, the blowing agent is 100% water. During the chemical reaction between polyol and isocyanate (MDI), CO₂ gas is formed, which is responsible for the expansion of the foam.
This process generates important advantages:
- lower material loss during application
- higher system yield
- formulation stability even after opening the drum
- excellent cost-effectiveness compared to systems with gases
- more environmentally sustainable system
In practice, this means more foam formed with the same amount of applied product.
Amino Spray Systems: AMIPOL PSP 2032 and AMIPOL PSP 2073
Amino’s spray systems are formulated with an MDI base, using PUR (rigid polyurethane) technology and a fully water-based blowing agent.
Currently, two main densities meet the most common market applications.
AMIPOL PSP 2032 – Medium density (30–33 kg/m³)
An ideal system for applications seeking a balance between yield and thermal performance.
Common applications:
- internal roof insulation
- areas protected against weather
- internal metal structures
- industrial sheds
This density offers good thermal performance and excellent application efficiency.
AMIPOL PSP 2073 – High density (35–38 kg/m³)
A system developed for applications that require greater structural resistance of the foam.
Indicated for:
- external roof surfaces
- applications exposed to weather
- areas with greater mechanical demand
- places with possible technical traffic
With higher density, the foam gains more mechanical resistance and structural support, increasing its durability.
Cellular structure and foam stability
Another differentiator of Amino formulations is the control of the cellular structure.
The systems were adjusted to generate:
- fine and homogeneous cells
- better foam stability
- consistent thermal performance
- greater insulation durability
This controlled cellular structure directly contributes to the insulation efficiency and the dimensional stability of the foam over time.
PU spray application: factors that influence performance
Nos sistemas spray, a qualidade da aplicação depende de alguns fatores importantes.
In spray systems, the quality of the application depends on some important factors.
Proper equipment
Spray systems use high-pressure machines with a 1:1 volumetric ratio. The equipment must have proper heating to ensure the ideal product performance.
Application temperature
It is recommended to apply the system on surfaces with temperature above 10 to 15°C, avoiding negative impacts on the foam expansion.
Applicator experience
With the formulation already stabilized, machine adjustment and applicator experience are decisive factors to ensure a uniform and efficient application.
Adhesion to different substrates
Amino’s spray formulations were developed to present good adhesion on several substrates, such as:
- metal sheets
- concrete
- wood
- metallic surfaces
When necessary, a specific primer can be used to further increase the anchoring of the PU spray system
Economic advantage: more yield in application
One of the main differentiators of water-based spray systems is the higher yield in application.
As there are no physical blowing agents in the formulation, there is less material loss by volatilization during application.
This means:
- better use of the product
- higher yield per applied area
- less material waste
In practice, the system offers excellent cost-effectiveness for the client.
About Amino
Water-based spray systems represent an important evolution in thermal insulation technology with polyurethane.
With the AMIPOL PSP 2032 and AMIPOL PSP 2073 formulations, Amino delivers a solution that combines:
- high yield in application
- process stability
- good adhesion to different substrates
- homogeneous cellular structure
- excellent cost-effectiveness
As our technical team summarizes:
“Our spray system is safe, stable, high-performance, and offers excellent cost-effectiveness.”
Contact Amino’s technical team and discover which spray system is ideal for your application.