PP nonwoven fabric vs polyester nonwoven fabric: which one is more breathable? Which one is more sun resistant?
There are so many varieties of non-woven fabrics on the market, and PP non woven fabric and polyester non-woven fabric are the two most common competitors. How should I choose between a cheap bowl and a sturdy and durable one? Today, let's talk about the two dimensions that are most related to daily experience: breathability and sun resistance.
Breathability showdown: who can breathe better?
Firstly, the conclusion is that the breathability of polyester non-woven fabric is generally better than that of PP non-woven fabric.
Why is that? This starts with the 'genes' of the two materials.
The raw material of PP non-woven fabric is polypropylene, which is characterized by non water absorption and zero moisture content. PP non-woven fabric is composed of 100% fibers and has a porous structure inside, so it also has good breathability and can keep the fabric dry. Many disposable masks, hygiene products, and agricultural covering materials use PP non-woven fabric because of its "breathable and non stuffy" characteristics.
But polyester non woven fabric is superior in terms of breathability. Polyester is made from polyester as raw material, with a looser and more porous fiber structure, and smoother air circulation channels. There is clear information indicating that compared with polypropylene (PP) and other non-woven fabrics, polyester non-woven fabrics have excellent properties such as non water absorption, insolubility in water, and strong breathability. Therefore, polyester non-woven fabric is more suitable for use in scenarios such as clothing, bedding, and filter materials that require higher breathability.
To give a simple example, PP non-woven fabric is like a pure cotton T-shirt, which can be worn daily without any problems and has sufficient breathability; Polyester non-woven fabric is like a professional quick drying garment, with smoother air circulation and faster moisture removal. If you have higher requirements for breathability, such as making close fitting clothing or bedding liners, polyester is a better choice.
Sun resistance showdown: who can better withstand the sun?
The difference in this round is much greater than breathability.
The "life gate" of PP non-woven fabric is fear of sun exposure. Polypropylene molecular chains will break under continuous exposure to ultraviolet radiation, causing the material to gradually become brittle, powdery, and eventually shatter upon impact. The industry generally believes that PP non-woven fabric has poor light resistance, is not resistant to sunlight, and is prone to aging and brittleness. You can put a PP non-woven fabric storage box on the balcony for summer, and then go get it in autumn. It may already be "crispy" - this is not an exaggeration, it is a molecular inevitability.
Polyester non-woven fabric is much harder in terms of sun resistance. **Polyester is made from polyester as raw material, and its UV resistance is significantly better than PP. Data shows that polyester non-woven fabric only loses 60% of its strength after 600 hours of sunlight exposure. In other words, after 600 hours of sun exposure, it can still retain 40% of its strength, while PP non-woven fabric may have already "broken into pieces" under the same conditions.
Why is there such a big gap? Because polyester has a benzene ring in its molecular structure, this structure has a natural "resistance" to ultraviolet radiation; The molecular chain of PP is a straight chain structure, which is easily broken by ultraviolet radiation. One is' naturally resistant to sunlight ', and the other is' naturally afraid of sunlight', which are fundamentally different.
A direct comparison : PP non-woven fabric can naturally decompose after being placed outdoors for 90 days - this is not praising its environmental friendliness, but saying that it really doesn't need to be exposed to sunlight. Polyester non-woven fabric can be used in long-term outdoor or high-temperature scenarios such as geotextiles, building waterproofing membranes, and automotive interiors, relying on its excellent weather resistance.
Other dimensions: Let's also talk about "additional questions"
In addition to breathability and sun resistance, there are several other noteworthy differences between these two brothers:
Heat resistance: PP non-woven fabric shows significant shrinkage at 140 ℃, while polyester non-woven fabric can withstand temperatures up to 230 ℃ or even 260 ℃. If you want to use it in high-temperature environments, such as heat transfer printing or car interiors, polyester is the only option.
Strength: The tensile strength of polyester non-woven fabric can reach 55-80cN/tex, far exceeding the 30-45cN/tex of PP. Simply put, polyester is stronger and more durable.
Price: Due to the high cost of PET raw materials and processing, the cost price of polyester non-woven fabric is 30% -40% higher than that of PP non-woven fabric. PP non-woven fabric is cheap, which is its biggest advantage.
Density : The density of PP non-woven fabric is only 0.91g/cm ³ , making it the lightest variety among common chemical fibers. Lightweight means low cost and convenient transportation, but it also means relatively limited strength.
Write at the end
Returning to the original question: Which is better, PP non-woven fabric or polyester non-woven fabric?
There is no absolute 'better', only 'more suitable'.
If you pursue cost-effectiveness , it can be used in disposable, short-term, indoor scenarios - such as shopping bags, storage box liners, disposable protective equipment - PP non-woven fabric is completely sufficient , cheap and affordable.
But if you need long-term use, outdoor exposure, high temperature environment, high breathability requirements - such as car interiors, geotextiles, bedding fabrics, outdoor coverings - spend 30% -40% more money on polyester non-woven fabric, which is definitely worth. It won't cause you to fall, crack, or shatter after just a few months of use.
Summary in one sentence: Short term use of PP indoors saves money; Long term use of polyester outdoors is worry free.Next time you buy non-woven fabric products, take a look at the label and ask about the material, don't let "cheap" become "the price of repeated purchases".
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.