The PE Laminated PTFE Membrane Liner is a high-performance sealing and venting solution designed for corrosive chemical reagent packaging containers, including laboratory bottles, industrial chemical containers, agrochemical packaging, and high-volatility liquid containers.

This liner combines a polyethylene (PE) support layer with a microporous PTFE membrane, delivering excellent performance in sealing, pressure equalization, leak prevention, and chemical resistance.

During storage and transportation, chemical liquids often generate internal pressure due to temperature changes, chemical reactions, or gas release. This liner allows gas to escape while preventing liquid leakage, helping maintain container integrity and improving packaging safety.

It is an ideal choice for packaging systems that require both airtight sealing and controlled venting, especially for aggressive and sensitive chemical media.

Chemical packaging—especially for corrosive liquids—faces several challenges:

• Internal pressure buildup causing container deformation
• Leakage risks during transportation
• Volatile or reactive chemical behavior
• Poor compatibility of standard liners with aggressive chemicals
• Need for both sealing and breathable performance

The PE laminated PTFE membrane liner effectively addresses these issues by combining chemical resistance, breathability, and sealing reliability in one integrated structure.

PTFE is highly inert and resistant to a wide range of aggressive chemicals, including acids, alkalis, oxidizers, and solvents.

The microporous PTFE membrane allows gas exchange while blocking liquids, helping prevent leakage while balancing internal pressure.

Reduces risks of container bulging, deformation, or rupture caused by pressure differences during storage and transport.

The PE layer provides structural support and compatibility with bottle caps, while the PTFE layer delivers functional venting performance.

Widely used for packaging:

• chemical reagents
• disinfectants
• cleaning agents
• agrochemicals
• industrial chemicals
• laboratory liquids

Available in custom sizes, thicknesses, and structures to match different bottle necks, caps, and application requirements.

Compatible with:

• HDPE bottles
• PE bottles
• PET bottles
• chemical containers
• laboratory reagent bottles
• industrial packaging containers

Minimizes leakage risks and improves transportation reliability for hazardous or sensitive chemicals.

Balances internal and external pressure, reducing bulging and collapse issues.

Helps maintain stable internal conditions, protecting chemical composition and quality.

Suitable for international chemical packaging standards and long-distance transportation.

We can recommend the optimal liner structure based on your chemical type, container design, and performance requirements.

Specialized in sealing materials, vent membranes, and functional packaging liners.

Support for OEM/ODM, including size, structure, material combinations, and branding.

Capable of supporting both trial orders and large-volume supply for global customers.

Experienced in chemical packaging, agrochemical packaging, laboratory applications, and industrial container systems.

Strict production and material control ensure consistent performance and quality.

The PE laminated PTFE membrane liner is widely used in:

• corrosive chemical reagent bottles
• laboratory containers
• agrochemical packaging
• disinfectant containers
• industrial chemical packaging
• cleaning agent bottles
• high-volatility liquid containers
• hazardous chemical packaging systems

We offer flexible customization based on your packaging requirements:

• liner diameter and thickness
• membrane permeability level
• material structure
• compatibility with cap design
• packaging format
• branding and labeling

If you provide bottle specifications or application details, we can recommend a suitable liner solution.

It is a composite liner combining a PE support layer and a PTFE membrane, designed for sealing and venting in chemical packaging.

Some chemicals release gas or experience pressure changes. A vented liner helps equalize pressure and prevent leakage or container deformation.

Yes. PTFE provides excellent resistance to acids, alkalis, and many aggressive chemicals.

It is designed to block liquid penetration while allowing gas flow, significantly reducing leakage risks under normal conditions.

Yes. We offer full customization based on your bottle and cap specifications.

Yes. Samples are available for testing before bulk orders.

It is widely used in chemical, agrochemical, laboratory, and industrial packaging sectors.

Yes. OEM and ODM services are available.

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