Kae Hwa Knowledge Center

Breathable Film Technology & Industry FAQ Guide

Knowledge Center/1. Materials & Fundamentals

What is the difference between MicroBreath™ PE and PP breathable films?

While both PE (Polyethylene) and PP (Polypropylene) belong to our MicroBreath™ microporous series, they offer distinct physical properties tailored for different manufacturing requirements and end-use environments.

Softness & Flexibility

MicroBreath™ PE

Engineered for maximum cloth-like softness and flexibility. PE film has a lower melting point, making it highly compatible with high-speed lamination and thermal bonding in hygiene production.

Ideal for: Baby diaper backsheets, adult incontinence products, and standard hygiene materials.
Strength & Thermal Stability

MicroBreath™ PP

Provides superior mechanical strength and dimensional stability. PP film withstands higher processing temperatures and offers higher tensile resistance under heavy stress.

Ideal for: Industrial protective coveralls, high-temperature desiccant packaging, and structural laminates.

Expert Verdict: Choose PE if your priority is ultimate skin-contact softness and flexibility for hygiene products. Choose PP if you need robust strength and heat resistance—or opt for our Additive-Free PP series for high-performance outdoor wear and medical applications that demand maximum material purity and durability.