PackDry™ – Breathable Laminate for Desiccant and Deodorant Packaging

Kae Hwa’s PackDry™, part of the FunPack series, is a high-performance breathable waterproof laminate specifically engineered for moisture absorbers and air-purifying packs. By precisely balancing controlled vapor transmission with absolute liquid and powder barrier properties, PackDry™ ensures maximum absorption efficiency while preventing chemical leaks, making it the trusted choice for global functional packaging manufacturers.

Lightweight
Breathable
Waterproof

PackDry™ — Breathable Film for Desiccant & Deodorant Packs The Ultimate Barrier for Moisture and Odor Control

PackDry™ is a breathable functional packaging material developed for desiccant packs, moisture absorbers, and household dehumidifier products.

Its microporous structure allows environmental moisture vapor to enter the package and activate the absorbent material inside. At the same time, the laminate helps contain absorbed liquid, powder, and reaction residue, reducing the risk of leakage during use, transportation, and storage.

Designed for stable sealing and efficient converting, PackDry™ can be supplied in rolls or pre-cut sheets for manual and automated packaging systems.

Controlled Moisture Intake with Reliable Leak Protection

Effective desiccant packaging must allow moisture to enter without allowing the contents to escape.

PackDry™ balances vapor permeability, liquid resistance, sealing performance, and mechanical strength in one engineered laminate. This helps desiccant and dehumidifier manufacturers maintain consistent absorption performance while improving packaging cleanliness and reliability.

Core Performance Benefits

Breathable Microporous Structure

Controlled microporous channels allow environmental moisture vapor to reach the desiccant and support efficient moisture absorption.

Leak-Resistant Barrier

The functional membrane helps prevent absorbed liquid, alkaline solution, powder, and internal residue from seeping through the package.

Strong Sealing Performance

PackDry™ is compatible with thermal or ultrasonic sealing processes, supporting secure package edges and consistent production quality.

High Mechanical Strength

The laminated structure provides tear, puncture, and handling resistance for packaging exposed to filling, transportation, and long-term storage.

Smooth and Print-Friendly Surface

The outer surface can support logos, instructions, warning information, and branded graphics.

Efficient Converting

Clean cutting performance and stable material handling support high-speed packaging and automated production lines.

Material Structure

PackDry™ is available in two-layer or three-layer laminate constructions according to the required barrier and packaging performance.

Outer Layer | Durable Nonwoven

Provides structural strength, surface protection, printability, and sealing support.

Functional Layer | Breathable Microporous Membrane

Controls moisture-vapor intake while helping prevent internal liquid or powder leakage.

Optional Inner Layer | Functional Film or Treatment

Can be customized for specific sealing, adhesion, printing, or functional requirements.

Ideal Applications:

PackDry™ is suitable for:

  • Silica gel desiccant packs
  • Calcium chloride moisture absorbers
  • Household dehumidifier boxes
  • Hanging dehumidifier bags
  • Upright moisture absorber bags
  • Strip-type dehumidifiers
  • Container desiccants
  • Electronics and battery packaging
  • Pharmaceutical and precision-product protection
  • Long-term logistics and storage applications

Customization Options

Available options include:

  • Roll or pre-cut sheet format
  • Customized width and basis weight
  • Two-layer or three-layer construction
  • Surface printing
  • Thermal or ultrasonic sealing compatibility
  • Customized vapor permeability
  • Customized strength and leak-resistance performance
  •  

Core Advantages

The core of PackDry™ is a precision-engineered microporous membrane. Billions of microscopic pores are calibrated to allow water vapor to diffuse rapidly into the desiccant material. This optimized Moisture Vapor Transmission Rate (MVTR) maximizes the absorption speed and capacity of the active ingredients, extending the shelf life of the protected products.

Scented beads and liquid fragrances are highly concentrated and can cause severe stains on textiles or leather if leaked. The waterproof nature of our microporous film ensures 100% liquid containment. Even when subjected to pressure or elevated temperatures (such as inside a hot car), PackDry™ securely locks the oils inside the pouch.

For fragrance packaging, the material itself must be completely neutral. Traditional laminated films often use chemical adhesives that emit VOCs (Volatile Organic Compounds), which can interfere with or ruin the intended perfume scent. Kae Hwa utilizes an advanced, solvent-free in-line lamination process, guaranteeing a clean, odorless material that preserves the pure integrity of your fragrance.

Designed for modern automated packaging lines, PackDry™ offers excellent mechanical strength and is fully compatible with both thermal sealing and ultrasonic welding, ensuring burst-proof edges. Additionally, the smooth surface of the film supports high-resolution 4-color printing, allowing brands to showcase vibrant logos, patterns, and safety warnings directly on the sachet.

Specification

Brand PackDry™ (FunPack Series)
Product Form Roll
Material Breathable Film + Soft Nonwoven
Structure 2-Layer or 3-Layer Microporous Composite
Breathability Mechanism High Vapor Permeability (Customizable for absorption rates)
Barrier Properties 100% Liquid-proof, Anti-powder sifting, High Tear/Puncture Resistance, Thermal and Ultrasonic Sealable
Surface Treatment Smooth / Custom Printed (Brand logos/Warnings)
Weight 10 - 100 gsm
Overall Width 80 - 2000 mm (Customizable)
Length 1000 - 6000 m
Application Desiccants, Dehumidifier packs, Deodorizing bags
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PackDry™ – Breathable Laminate for Desiccant and Deodorant Packaging

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Redefining the Boundaries of Breathable Technology

Understanding Functional Packaging — The Benchmark for Sealing Control

In the production of desiccants and dehumidifiers, product failure usually occurs at the seams or due to liquid leakage after moisture absorption. A premium packaging material must not only breathe but also possess high seal strength. PackDry™ achieves this by utilizing specialized polymers that melt and bond uniformly under thermal or ultrasonic sealing, creating a secure, burst-resistant edge that ensures the chemicals inside never contaminate the external environment.

Why Global OEMs Choose Kae Hwa's FunPack Series

With over 60 years of polymer expertise, Kae Hwa Industrial is a trusted partner for global OEMs in the desiccant and functional packaging industries. Operating from ISO 9001 and ISO 14001 certified facilities in Taiwan and Malaysia, we deliver consistent, customizable materials. From adjusting vapor transmission rates to optimizing seal strength, our clean, solvent-free production processes ensure reliable, long-term performance in highly moisture-sensitive environments.

About Us
Engineering Reliable Protection Through Precision

FAQ

Many moisture absorbers (like calcium chloride) turn into a liquid brine after absorbing humidity. PackDry™ features a microporous film where the pores are large enough to let water vapor in, but much too small for liquid water to pass through, creating an absolute barrier that prevents reverse seepage and protects surrounding items.

Yes. Unlike standard woven fabrics or basic nonwovens that have large gaps, the microporous membrane in PackDry™ acts as a microscopic filter. It allows air and odors to flow into the activated carbon while completely blocking fine dust or chemical powders from sifting out (anti-sifting).

Absolutely. PackDry™ is engineered with excellent processability. Its structured laminate design provides the mechanical stability required for high-speed unwinding, and it is highly compatible with both thermal sealing and ultrasonic welding, ensuring strong, burst-proof seams.