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.

Lightweight
Breathable
Waterproof

PE/PP Microporous Breathable Films – MicroBreath™ Series

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. This mineral-formulated series includes Polyethylene (PE) options for exceptional tactile softness and Polypropylene (PP) variants for structural strength—making it the cost-effective industry standard for high-volume converting lines.

By utilizing our proprietary CaCO3 compounding and multi-layer casting technology, this classic series offers distinct structural advantages tailored for standard converting. The inclusion of mineral fillers not only optimizes uniform hydrostatic resistance but also provides a distinct matte, paper-like texture and superior opacity. It is specifically designed as a high-performance barrier for traditional hygiene backsheets, medical surgical gowns, industrial protective coveralls, and multi-purpose packaging where high-speed lamination and reliable moisture-wicking are required. (Note: For applications demanding 100% polymer purity, zero mineral dusting, or mono-material recycling, please refer to our Filler-Free pure PP series).

As a highly versatile and customizable solution within the MicroBreath™ portfolio, our CaCO3-formulated films can be tailored in color, surface texture, and functional graphics. Through specialized masterbatch formulation, the membranes can be colored to enhance product identity; advanced embossing techniques introduce non-slip or cloth-like tactile patterns; and inline printing treatments ensure high-definition graphics with strong ink adhesion. Backed by over six decades of polymer expertise, Kae Hwa ensures every roll delivers consistent Moisture Vapor Transmission Rate (MVTR), absolute waterproof integrity, and seamless compatibility with thermal bonding and high-speed converting.

MicroBreath™
PE Breathable film

WATERPROOF & BREATHABLE STRUCTURAL PERFORMANCE

The MicroBreath™ PE/PP membrane series features a dense microporous network formed through optimized Calcium Carbonate (CaCO3) formulation and precise machine-direction stretching. This engineered structure creates a physical barrier that blocks water droplets, fluids, and contaminants while maintaining high, stable Moisture Vapor Transmission Rate (MVTR) levels essential for microclimate comfort and moisture management.

When laminated onto various nonwoven substrates, the uniform pore distribution ensures an exceptional balance between hydrostatic resistance and vapor permeability. This mineral-filled structure also provides enhanced opacity and a premium matte finish, making it the globally recognized industry standard for hygiene diaper backsheets, medical surgical garments, and moisture-regulating packaging.

Waterproof Breathable Structral Performance

CONSISTENT PERFORMANCE YOU CAN DEPEND ON

MicroBreath PE Breathable Film

Every roll within the CaCO3-formulated MicroBreath™ PE/PP series undergoes rigorous in-line quality monitoring, including precise pore-size distribution analysis, basis-weight stability tracking, and tensile strength controls.

This strict quality assurance guarantees that each batch maintains its designated MVTR, hydrostatic barrier integrity, and mechanical performance—even after high-speed downstream converting, thermal exposure, or extended storage. The membrane’s uniform structural distribution is the key to preventing localized barrier failure. Whether subjected to constant flexing, fluid pressure, or mechanical stress during handling, MicroBreath™ PE/PP delivers reliable, continuous protection.

SOFT, FLEXIBLE & PROCESS-FRIENDLY FOR HIGH-YIELD LAMINATION

MicroBreath™ PE/PP films are engineered to optimize high-volume converting efficiency. The PE formulations offer a superior cloth-like handfeel with excellent tactile softness, while the PP variants provide enhanced thermal resistance and structural rigidity. This versatile material behavior makes the entire series exceptionally compatible with all standard lamination technologies—including hot-melt adhesive bonding, extrusion coating, and ultrasonic sealing.

The mineral-reinforced matrix is specifically formulated to resist pin-holing, thermal shrinkage, and structural deformation during high-tension converting, directly resulting in:

  • Maximised Lamination Efficiency: Reduced machine downtime during high-speed roll-to-roll processing.

  • Optimized Thermal Stability: Superior resistance to heat distortion during hot-melt or extrusion processes.

  • Enhanced Seam Integrity: Excellent bond strength and ultrasonic weldability with nonwoven substrates.

  • Minimized Production Waste: Consistent tension control and roll uniformity to eliminate scrap.

This cost-effective reliability makes the series especially advantageous for large-scale hygiene converters, global medical PPE manufacturers, and industrial protective material producers.

PE Breathable film

CUSTOMIZABLE IN COLOR, TEXTURE & PRINTING

MicroBreath™ Classic (PE/PP)

As the most established and versatile platform within our portfolio, the CaCO3-formulated MicroBreath™ PE/PP series supports extensive functional and aesthetic customizations:

  • Color Masterbatch Customization: Tailored opaque or tinted formulations to align with specific brand identities.

  • Engineered Embossed Textures: Advanced inline embossing to introduce distinct non-slip micro-patterns or textile-like finishes.

  • High-Definition Rotogravure Printing: Multi-color inline printing with specialized surface treatments to ensure exceptional ink adhesion and graphic clarity.

Backed by Kae Hwa’s six decades of advanced polymer compounding expertise, every customized visual variant is precision-engineered to ensure that aesthetic enhancements never compromise the core breathability or liquid barrier performance of the membrane.

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.