MicroBreath™ Classic (PE/PP)

Kae Hwa’s MicroBreath™ PE/PP Microporous Breathable Film Series is engineered to deliver high Moisture Vapor Transmission Rate (MVTR) and reliable hydrostatic resistance. Incorporating polyolefin materials to balance tactile flexibility (PE) and mechanical strength (PP), these advanced membranes offer customized specifications in color, embossing, and high-definition printing—delivering optimal fluid barrier and temperature-control solutions for hygiene, medical, industrial safety, and functional packaging applications.

MicroBreath™ Classic (PE/PP) — Cost-Effective Microporous Protection for High-Volume Converting

MicroBreath Classic PE/PP Series

Engineered by Kae Hwa Industrial Co., Ltd. — over 60 years of expertise in breathable barrier technology.

Kae Hwa's MicroBreath™ PE/PP Microporous Breathable Film Series is engineered from premium polyolefin polymers blended with high-purity Calcium Carbonate (CaCO3) filler. Through precise machine-direction orientation (MDO) stretching, the matrix creates microscopic interlocking pores around the mineral particles, achieving an optimal balance of robust waterproof protection and high vapor transmission.

By utilizing our proprietary CaCO3 compounding and multi-layer casting technology, this classic series offers distinct structural advantages tailored for standard converting — a matte, paper-like texture, superior opacity, and the cost-effective industry standard for high-speed lamination lines.

MicroBreath™ Classic PE/PP roll
Waterproof Breathable Structural Performance

Waterproof & Breathable Structural Performance

A dense microporous network — formed through optimized CaCO3 formulation and precise MDO stretching — blocks water droplets, fluids, and contaminants while maintaining high, stable MVTR for microclimate comfort.

MicroBreath PE Breathable Film consistent quality

Consistent Performance You Can Depend On

Every roll undergoes rigorous in-line QC — pore-size distribution analysis, basis-weight stability tracking, and tensile strength controls — guaranteeing MVTR and barrier integrity batch after batch.

PE breathable film soft and flexible

Soft, Flexible & Process-Friendly

PE formulations deliver a cloth-like handfeel, while PP variants add thermal resistance and rigidity — both fully compatible with hot-melt bonding, extrusion coating, and ultrasonic sealing.

MicroBreath Classic PE/PP customizable color and printing

Customizable in Color, Texture & Printing

Beyond core performance, the series supports extensive visual customization without compromising breathability or barrier integrity:

  • Color masterbatch customization for brand identity
  • Engineered embossed textures — non-slip or cloth-like finishes
  • High-definition rotogravure printing (1–4 colors)

Core Advantages

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Maximised Lamination Efficiency

Reduced machine downtime during high-speed roll-to-roll processing.

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Optimized Thermal Stability

Superior resistance to heat distortion during hot-melt or extrusion processes.

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Enhanced Seam Integrity

Excellent bond strength and ultrasonic weldability with nonwoven substrates.

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Minimized Production Waste

Consistent tension control and roll uniformity to eliminate scrap.

Application Fit

The classic CaCO3-formulated series is the established, cost-effective barrier for high-volume hygiene, medical, and industrial converting lines.

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Hygiene Diaper Backsheets

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Medical PPE

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Surgical Gowns

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Industrial Protective Coveralls

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Moisture-Regulating Packaging

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Functional Liners

PE vs. PP: Choosing the Right MicroBreath™ Classic Variant

Both variants share the same CaCO3-formulated microporous structure and MVTR performance — the difference is in hand feel and mechanical behavior.

MicroBreath™ PE

Exceptional cloth-like tactile softness and flexibility — ideal for hygiene backsheets and comfort-focused laminates that call for a soft hand feel.

MicroBreath™ PP

Enhanced thermal resistance and structural rigidity — suited for industrial protective coveralls and applications that demand higher mechanical strength.

In short, PE is the choice for softness and comfort, while PP is the choice for strength and thermal stability. For applications demanding 100% polymer purity, zero mineral dusting, or mono-material recycling, see our Filler-Free pure PP series.

Specification

Brand MicroBreath™ Series
Product Form Roll
Material Microporous Polyethylene (PE) or Polypropylene (PP) Film
Structure Calcium Carbonate (CaCO3) Formulated Microporous Film (Single / Multi-Layer)
Breathability Mechanism Machine-Direction Orientation (MDO) Interlocking Pore Formation (Low - High MVTR)
Barrier Properties High Hydrostatic Pressure Resistance & Fluid Barrier Integrity
Surface Treatment Smooth / Embossed / Corona Treated / Rotogravure Printing (1-4 colors) / Custom Opaque Colors
Weight 10 - 100 gsm
Overall Width 80 - 2000 mm (Customizable)
Length 1000 - 6000 M
Application Hygiene diaper backsheets, medical PPE, surgical gowns, industrial protective coveralls, moisture-regulating packaging, functional liners
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Redefining the Boundaries of Breathable Technology

Our Manufacturing Strengths

  • Vertical Integration — From resin formulation, film extrusion, microporous stretching, lamination, to printing
  • Advanced QC System — In-line optical inspection, weight control, pore-size analysis, and mechanical testing
  • Global Production Footprint — Taiwan & Malaysia facilities supporting stable supply and flexible lead times
  • Certified Quality — Compliance with EN, ASTM, AAMI, and major international standards
  • Sustainable R&D — Biodegradable breathable films, recycled materials, solvent-free lamination
With more than 60 years of expertise in polymer engineering and breathable membrane development, Kae Hwa is a trusted global supplier of high-performance waterproof & breathable materials. From hygiene and medical to industrial and packaging applications, our products are engineered to deliver durability, comfort, and long-term consistency under demanding conditions. As one of the earliest companies in Asia to commercialize breathable PE films, we continue to advance film technology through material innovation, structural engineering, and precise process control.
Your Choice, Our Responsibility
About Us
Engineering Reliable Protection Through Precision

FAQ

  • PE breathable films are softer, more flexible, and more commonly used in hygiene and medical applications.
  • PP breathable films offer higher heat resistance and are preferred for industrial protective fabrics.
  • If you need strong softness, WVTR, and lamination compatibility, PE is the better option.
  • Yes. MicroBreath™ PE supports custom color masterbatch, embossed patterns, and multi-color printing.
  • Common options include white, blue, green, yellow, and customer-defined branding colors.

PE microporous film is ideal for:

  • Hygiene backsheets
  • Medical textiles and protective fabrics
  • Industrial apparel
  • Desiccant or deodorant packaging
  • Functional consumer packaging
  • Moisture-control liners

If your product requires breathability + waterproof barrier, PE film is a strong candidate.

  • MicroBreath™ PE typically offers 1,500–6,000 g/m²·24hr, depending on GSM and pore configuration.
  • Higher-WVTR formulations for hygiene and medical applications are available upon request.

Yes. The film is engineered to withstand:

  • Heat-seal processes
  • Ultrasonic bonding
  • Hot-melt lamination
  • High-speed roll-to-roll converting

Its dimensional stability minimizes shrinkage, pin-holing, and deformation.

Absolutely. MicroBreath PE supports:

  • Rotogravure printing (1–4 colors)
  • Precise color matching
  • High-adhesion fast-drying ink
  • Anti-smudge, anti-fade performance

It is frequently used in branded hygiene products and breathable packaging.

  • The film provides 80–6000 mm H₂O hydrostatic resistance (EN 20811), depending on GSM and structure.
  • This makes it suitable for hygiene backsheets, medical drapes, protective apparel, and industrial uses.
  • Yes. Width and roll length can be fully customized.
  • Standard range: 80 mm – 2000 mm.
  • Large-volume jumbo rolls or slit rolls are available based on production needs.

Kae Hwa’s in-line QC system monitors:

  • Pore-size uniformity
  • Weight variation
  • Tensile strength
  • Thickness deviation

This ensures the breathable film performs consistently across large production batches.

Yes. Corona-treated versions are available for improved adhesion during printing or coating.