Polyurethane Foam or PU foam is a part of our day-to-day lives, although we may not be entirely aware of it. Say for example the seats in our cars, the soles of our shoes, several gym gears, and many more. Yet with growing global warming, it is natural to ask if anything we use or consume is contributing to this massive hazard. Thus, it becomes all the more crucial to understand PU completely before answering the question– “Is Polyurethane foam toxic?”

What Is PU Foam And How Is It Formed

In the modern era, while people seek complete comfort in amenities in the most organic way, anything sounding a chemical name is presumed to be inorganic or perhaps toxic. Hence to break free from the long-told myth–according to Polyurethane Foam Association, PU is actually formed from the result of a reaction between two organic materials namely, polyol (natural alcohol) and diisocyanate (obtained from plants or animal isocyanates) along with water.

Different ratios of each ingredient or mixing techniques and the machines used such as foaming machines and foam cutting machine systems will result in foam with varying densities and consistencies. Some kinds are incredibly soft, while others are hard, like plastic. Depending on density and elastomer content, polyurethane foam can be shaped into common materials like fabric coatings and synthetic fibres.

Uses Of PU Foam

PU foam is usually considered one of the most versatile materials in the industry due to its flexible uses in our daily lives. Be it automobiles, upholstered furniture, or electrical insulation sectors, we come across this material almost every hour of the day. However, their applications vary depending on the type i.e. closed cell PU foam or open cell PU foam.

Flexible polyurethane foams are typically used in mattresses, chairs, furniture, and speciality items necessary for cushioning. Since they often have low densities, these foams are flexible and have a bouncing effect. The foams are evaluated according to several criteria, including firmness, stiffness, load-bearing ability, compressibility, densities, tensile strength, split, shear, and elongation resistance, among many others. This contributes to obtaining higher relevance and quality. They are a secure home solution because they do not melt when heated. This material can also be used to produce synthetic textiles like Spandex, high-performance adhesives, and roller coaster wheels.

5 Most Frequently Asked Questions About PU Foam

1. What Kinds Of Products Can Be Made From Polyurethanes?

Being highly adaptable, PU foam can be used for nearly anything, from roof insulation to surfboards. The initial elements can be combined in infinite ways; consequently, there are an endless number of possible end products. The manufacturers are being compelled to think of creative uses for this material by the abundance of perks. The list is expanding every day as polyurethanes replace numerous conventional materials like rubber and metals.

2. What Materials Makeup Polyurethane Foam?

A diisocyanate and a polyol undergo a chemical process to produce polyurethane. Once this reaction has taken place, a safe and incredibly adaptable substance is produced. Resilience, flexibility, and stiffness are just a few of the many different qualities it might have depending on the combination of materials used.

3. What Is The Lifespan Of Pu Foam?

The application and type of use will affect how long polyurethane lasts. We can estimate a lifespan of 50+ years under regular use and frequent wear and tear for building insulation.

4. Does Polyurethane Foam Pose A Risk To People?

Once the chemical interaction between its constituent parts has occurred, the outcome is a polyurethane foam is entirely inert and safe for people.

5. Can Polyurethanes Be Recycled?

Yes, you can recycle any type of polyurethane. However, recycling may not always be the best option for the environment. Energy recovery is sometimes the best choice because recycling requires energy.

Is PU Foam Toxic?

According to the Polyurethane Foam Association (PFA), all expanding foam products are recycled. Foam insulation, made from millions of pounds of post-consumer waste, is diverted from landfills and used as a bonded carpet cushion.

The manufacturing process is one of the most common folklore about PU foam. Many people think the foam produced is environmentally hazardous because the final product is not an organic material. Polyurethane foam is produced via an exothermic reaction that uses hardly any water or energy. Therefore, there is no need for a second “push” via mechanical means to make the finished product as the polyol and diisocyanate release their own energy through the naturally occurring chemical reaction. Due to this natural process, the finished foam does not release any off-gasses.


Living sustainably involves more than just eating only natural foods and shunning all manufactured goods. Making wise decisions for society and the environment is what it means to live sustainably. True and enduring viability can be achieved by educating oneself with accurate information about PU foam and foam cutting machines from reliable sources and then applying that knowledge to make practical daily life adjustments. Thus, creating contrast is attainable with polyurethane foam! We, the Santech Industries thrive by being the leading foam machine manufacturers, and are up for making a difference in the most economical way!