What Is TPU Coating?

TPU stands for Thermoplastic Polyurethane.

In simple terms, TPU is a flexible polyurethane material that can be processed with heat and applied to textiles as a coating or film.

When TPU is coated onto polyester or nylon fabric, it forms a continuous polymer layer on the surface. This layer can improve water resistance and protect the underlying fabric.

One of the reasons TPU is so popular in technical textiles is its balance of properties. TPU can be highly elastic while still being tough and wear resistant. Depending on the grade, it can also offer good resistance to oils, chemicals, weather and repeated mechanical movement.

TPU is also widely used in textile films and flexible laminates. Applications include outdoor clothing, sports products, inflatable products and other technical textile products where waterproofing and flexibility are important.

On fabric, TPU can be made soft and flexible, or relatively firm and strong. This means the finished fabric can feel very different depending on the TPU grade and coating construction.

That is one reason we see TPU used on everything from lightweight fabrics to heavy technical oxford fabrics.

What Is TPE Coating?

TPE stands for Thermoplastic Elastomer.

Unlike TPU, which refers to a specific type of material, TPE is a broader term for thermoplastic materials with rubber-like properties.

In coated fabrics, TPE is used as a flexible polymer layer on the textile surface.

A TPE-coated fabric can have a soft and slightly rubbery feel, while still being strong enough for demanding applications. TPE-coated textiles are also used in upholstery and other products where abrasion resistance and surface durability are important.

TPE coatings are also used on polyester oxford fabrics and other textile constructions for water resistance and surface protection.

TPU Coating vs TPE Coating

The easiest way to understand the difference is to put the main properties side by side.

There is quite a lot of overlap between the two, but they have slightly different strengths.

Flexibility: TPU Has a Very Good Balance

TPU is one of the coatings we often associate with flexible technical fabrics.

It can bend, fold and stretch without making the fabric feel excessively rigid. At the same time, it can maintain good mechanical strength and abrasion resistance.

That balance is particularly useful for fabrics that need to move a lot during use.

For example, a backpack is constantly being folded, squeezed and bent. An inflatable product may be rolled up and unfolded repeatedly. Outdoor equipment may experience both cold temperatures and mechanical movement.

TPU works well in these situations because flexibility is combined with relatively high toughness.

So when flexibility is the main requirement, neither one automatically wins. The difference is more about what kind of flexibility and surface feel we want.

Abrasion Resistance: One of TPU's Strong Points

Abrasion resistance is another area where TPU performs very well.

A good TPU coating can withstand repeated rubbing while keeping its surface intact. This is useful for backpacks, luggage, protective covers, outdoor equipment and other products that see a lot of daily friction.

This does not mean every TPU coating has the same abrasion resistance. The TPU grade, coating thickness and fabric construction all make a difference.

TPE can also have excellent abrasion resistance.

Some TPE-coated upholstery fabrics, for example, are specifically designed for extremely high wear resistance.

TPU has a particularly strong combination of abrasion resistance + flexibility + elasticity, which is one reason it is popular in technical textiles.

Waterproofing

Both TPU and TPE can be used to create a waterproof barrier on fabric.

The coating forms a polymer layer that prevents water from passing easily through the textile.

TPU is especially common where waterproofing needs to be combined with flexibility. TPU films used in outdoor clothing and sports applications, for example, can provide waterproofing while retaining elasticity and flexibility.

TPE can also provide a very effective water barrier.

In actual fabric production, the final waterproof performance depends a lot on the coating construction rather than just the name of the polymer.

This is why two fabrics with the same “TPU coating” can still feel completely different.

Heat Sealing and Welding

This is one area where TPU becomes particularly interesting.

Because TPU is thermoplastic, suitable TPU-coated fabrics and TPU films can be heat bonded and welded.

This is useful for products such as:

TPU films are already widely used for textile bonding and flexible laminated constructions.

Some TPE coating systems can also be heat sealed because they are thermoplastic. But TPU is a more familiar choice when welding or heat bonding is an important part of the final product.

Chemical and Oil Resistance

TPU can have good resistance to oils, grease and many chemicals, although the actual resistance depends on the particular TPU grade.

TPE is more complicated because there are many different TPE formulations.

Some work very well with oils and chemicals, while others are better suited to different environments.

Hydrolysis Resistance

Hydrolysis is particularly important for fabrics used in hot and humid environments.

This is one area where the chemistry of TPU matters quite a lot.

Different TPU chemistries have different hydrolysis resistance, and some TPU grades are specifically developed for better long-term performance in humid conditions.

TPE can also perform very well in this area.

Some TPE textile coatings have also been specifically developed to avoid hydrolysis-related problems.

So this is another property where the actual formulation matters more than the name alone.

Surface Feel: TPU and TPE Can Feel Quite Different

This is something that is difficult to explain with numbers.

This can be an advantage when the fabric needs:

The final surface can also be changed through the coating formulation and finishing process.

TPU Coated Fabric Applications

TPU works particularly well when a fabric needs to combine waterproofing with flexibility and mechanical durability.

TPE Coated Fabric Applications

TPE has a slightly different feel in the textile market.

It is often interesting when the coating itself is an important part of the finished surface.

Why Is TPU Often More Expensive?

There isn't one fixed price difference between TPU and TPE because both materials come in different grades.

But when a TPU coating costs more, there are several common reasons.

TPU vs TPE: Which One Is Better for Different Uses?

Rather than saying one is better overall, we normally see them used in slightly different situations.

TPU Coating vs TPE Coating: Final Thoughts

TPU and TPE can look similar from a distance, but they have different characteristics once we look at the fabric more closely.

TPU is usually associated with a good combination of flexibility, elasticity, abrasion resistance and waterproofing. It is particularly common in outdoor and technical textile applications, and it is also well suited to heat bonding and welding in appropriate constructions.

TPE gives us more variety in terms of surface feel and formulation. It can be soft, rubber-like, highly wear resistant and suitable for applications where cleanability and surface durability are important.

The price can also be very different, but that difference doesn't come from the coating name alone. Polymer grade, coating weight, processing and the fabric underneath all play a part.

Frequently Asked Questions