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PET PE
WALLIS
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Wallis supplies PET/EVOH/PE high-barrier composite sheet and roll material for pharmaceutical, diagnostic, healthcare and specialty liquid packaging applications. The multilayer structure combines PET mechanical support, an EVOH oxygen-barrier layer and a PE sealing layer to support product protection, heat sealing and downstream packaging conversion.
Thickness, layer structure, roll width, color, opacity and surface requirements can be customized according to the pharmaceutical product, packaging machine, forming process, sealing conditions and target barrier performance.
For pharmaceutical applications, final suitability should be verified using the actual drug, reagent or formulation together with the intended forming, filling, sealing, sterilization, transportation and storage conditions. Barrier and compatibility requirements should therefore be defined before bulk production.
PET provides mechanical support, dimensional stability and a suitable base for packaging conversion. The PET layer helps the composite maintain its structure during winding, transportation, forming and filling operations.
EVOH is incorporated primarily as a high oxygen and gas barrier layer. It can help reduce oxygen ingress into sensitive pharmaceutical or diagnostic products when the multilayer structure is properly designed and protected from environmental conditions that affect barrier performance.
PE can serve as the product-contact or sealing layer depending on the packaging design. It supports heat sealing and contributes to moisture resistance while helping protect the EVOH layer within the multilayer structure.
The following values represent typical specifications currently associated with this Wallis product. Final structure, thickness and performance parameters should be confirmed according to the intended pharmaceutical application.
| Parameter | Typical Specification / Notes |
|---|---|
| Structure | PET / EVOH / PE multilayer composite |
| Total Thickness | Approximately 80–300 µm; customizable subject to final structure |
| Typical Layer Range | PET 60–120 µm + EVOH 15–30 µm + PE 20–40 µm; alternative ratios can be evaluated |
| Roll Width | Approximately 30–1000 mm; customized widths available subject to production confirmation |
| Color / Opacity | Transparent, tinted or customized opacity according to product-protection requirements |
| Oxygen Barrier | High oxygen-barrier performance from EVOH; exact OTR should be specified with test conditions |
| Moisture Barrier | Depends on PE layer, total structure, thickness and test conditions; confirm target WVTR during specification |
| Heat Sealing | PE sealing layer; sealing window should be validated on the customer's equipment |
| Forming / Converting | Thermoforming, cutting, sealing and project-specific packaging conversion subject to structure validation |
| Printing / Marking | Batch information, expiration dates, logos and other markings with compatible inks and surface treatment |
| Customization | Layer structure, total thickness, roll width, color, opacity, surface and packaging |
Pharmaceutical PET/EVOH/PE Rolls
PET/EVOH/PE Pharmaceutical Packaging
High-barrier packaging should be specified using measurable performance requirements rather than terms such as “very low permeability” alone. Two important parameters are Oxygen Transmission Rate (OTR) and Water Vapor Transmission Rate (WVTR).
OTR indicates how much oxygen passes through a defined area of packaging material over time. In PET/EVOH/PE structures, the EVOH layer is primarily responsible for improving oxygen-barrier performance.
WVTR describes water-vapor transmission through the packaging structure. Moisture performance depends on the complete multilayer construction, including PE thickness and other structural parameters.
OTR and WVTR values should be compared only when test temperature, relative humidity, sample thickness and test method are known. Buyers should also clarify whether the stated barrier value is measured on flat material or on a formed package.
The EVOH layer helps reduce oxygen permeation through the package, making the structure suitable for products where oxidation control is an important packaging requirement.
PE can provide the heat-sealing interface required for many filling and sealing systems. Actual seal-initiation temperature, seal strength, dwell time and pressure should be established using the customer's equipment and mating material.
PET contributes dimensional stability and mechanical support during winding, converting, packaging and transportation. Final stiffness depends on PET thickness and total multilayer construction.
Transparent structures can allow product visibility while maintaining an oxygen-barrier layer. Tinted or more opaque structures can also be discussed where additional light management is required.
Layer thickness and total structure can be adjusted according to barrier targets, forming depth, sealing requirements, product sensitivity and packaging-line conditions.
Heat sealing is a system property rather than a material name alone. Seal performance depends on PE grade, layer thickness, sealing temperature, dwell time, pressure, mating web and packaging-machine configuration.
Buyers should provide the existing packaging-machine sealing temperature range, line speed and sealing pressure where available.
Seal strength should be tested with the actual lidding or mating material rather than evaluated from the PET/EVOH/PE forming web alone.
Finished packs should be evaluated for seal integrity and leakage under the expected filling, transportation and storage conditions.
PET/EVOH/PE composite materials can be designed for thermoforming and other converted packaging formats. Forming performance depends on total thickness, PET properties, layer adhesion, temperature profile and draw depth.
Barrier layers become thinner as material is stretched during thermoforming. Therefore, barrier performance measured on a flat roll cannot automatically be assumed to be identical at the deepest part of a formed cavity.
Where barrier performance is critical, buyers should validate the formed package under representative forming conditions rather than relying only on flat-sheet OTR or WVTR data.
Provide the thermoforming equipment type, mold depth, line speed and expected forming-temperature window when discussing a customized structure.
PET/EVOH/PE structures can be evaluated for pharmaceutical liquid packaging where oxygen barrier, seal integrity and product compatibility are required.
Diagnostic liquids and reagents may benefit from high-barrier packaging, but compatibility testing should be conducted using the specific reagent composition and intended storage conditions.
Products sensitive to oxidative degradation can be candidates for packaging structures containing an EVOH oxygen-barrier layer, subject to shelf-life and stability validation.
Tinted or opaque structures can be discussed for products that require reduced light transmission. The required wavelength protection should be defined according to the pharmaceutical formulation.
Customized barrier structures may also be evaluated for vitamins, nutraceutical liquids, diagnostic products and other healthcare applications requiring controlled oxygen and moisture exposure.
Vitamin or Antioxidant Solutions
Pharmaceutical Liquid Applications
Diagnostic & Chemical Reagents
PET/EVOH/PE should not be described as universally compatible with every pharmaceutical API, solvent, reagent or formulation. Product-contact suitability depends on the exact PE layer, additives, drug composition, concentration, pH, storage time and temperature.
Buyers should evaluate dimensional stability, swelling, extraction, seal integrity and barrier retention after contact with the intended formulation.
Where regulatory or pharmaceutical quality systems require migration, extractables, leachables or toxicological evaluation, the applicable test protocol should be defined for the finished packaging system.
High-barrier material can support product protection, but final drug shelf life must be established through the pharmaceutical manufacturer's stability program. Packaging material alone cannot guarantee a specific shelf life.
Sterilization compatibility depends on the exact PET/EVOH/PE construction and the sterilization process. A material should not automatically be considered compatible with autoclave, dry heat, radiation, ethylene oxide or other sterilization methods without validation.
Buyers should provide the sterilization technology, temperature, exposure time, pressure and number of cycles. The finished package should then be evaluated for deformation, layer adhesion, seal strength, barrier retention and product compatibility.
Pharmaceutical packaging requirements vary by country, product type and dosage form. Instead of relying on a generic statement such as “pharmaceutical compliant,” buyers should specify the exact regulatory, pharmacopoeial or customer quality requirements applicable to the project.
Documentation requirements may include material specifications, certificates of analysis, composition statements, quality-system documentation, migration testing or other records depending on the destination market and pharmaceutical manufacturer's qualification process.
Layer ratios can be discussed according to target OTR, WVTR, total thickness, forming performance and heat-sealing requirements.
Roll dimensions can be matched to the customer's packaging and converting equipment to reduce unnecessary slitting, handling and material waste.
Samples can be evaluated for barrier performance, heat-seal behavior, forming, dimensional stability and product compatibility before commercial production.
Wallis supports pharmaceutical packaging converters, medical packaging companies, diagnostic manufacturers and other industrial buyers requiring customized multilayer packaging materials.
Pharmaceutical Packaging Material Factory
Pharmaceutical Packaging Inspection Room
Pharmaceutical Material Packaging Production Line
Pharmaceutical Packaging Material Production Line
Describe the pharmaceutical, diagnostic or healthcare product and the finished package format.
Specify PET/EVOH/PE or provide your existing multilayer structure if you need an equivalent or optimized material.
Provide total thickness and individual layer requirements where already defined.
Provide target barrier values together with test temperature, relative humidity and test method wherever possible.
Specify the required roll width, roll diameter or weight and core requirements according to the packaging line.
Provide cavity dimensions, draw depth, forming equipment and operating conditions if the material will be thermoformed.
Include the mating material, seal temperature, pressure, dwell time and line speed if already known.
Identify the pharmaceutical formulation or chemical-contact conditions that need to be considered during compatibility testing.
If sterilization is required, specify the exact process and cycle conditions so material suitability can be evaluated.
Provide the destination country, required standards and documentation expected by your regulatory or quality team.
Current product information indicates a typical starting MOQ around 500 kg, although final MOQ depends on customized layer structure, dimensions and production requirements.
Shanghai Wallis Technology supplies plastic sheet, card material and specialty packaging materials to international B2B customers. Pharmaceutical packaging projects can be discussed according to required structure, performance, production-line conditions and customer qualification procedures.
Customized multilayer material development
Thickness and width customization
Sample support for packaging-line evaluation
B2B and OEM production support
Export packaging and international supply
Technical specification discussion before bulk production
PET/EVOH/PE is a multilayer plastic packaging structure combining PET mechanical properties, EVOH oxygen-barrier performance and a PE layer for sealing and moisture protection. The layer ratios can be adjusted according to the required packaging performance.
EVOH is primarily used to improve oxygen and gas barrier performance. It can help protect oxygen-sensitive products when integrated into a properly designed multilayer structure.
EVOH is mainly selected for oxygen barrier performance. Moisture-barrier performance depends on the complete multilayer structure, including PE and other protective layers, their thicknesses and the test conditions.
The current Wallis product range lists approximately 80–300 µm total thickness. Customized structures can be discussed according to barrier, forming and sealing requirements.
The current typical range is approximately 30–1000 mm. Final width availability depends on structure, thickness and production requirements.
The required OTR depends on the oxygen sensitivity of the packaged product, shelf-life target and package geometry. Provide the target OTR together with temperature, relative humidity and test method so materials can be compared correctly.
The required WVTR depends on the moisture sensitivity of the product and expected storage environment. Test temperature, humidity and package configuration should be specified together with the target value.
Suitable structures can be designed for thermoforming, but forming temperature, draw depth, layer adhesion and barrier retention should be evaluated using the actual package geometry and production conditions.
The PE layer can provide heat-sealing functionality. Seal strength and seal temperature should be validated with the mating material and actual filling and sealing equipment.
No universal compatibility claim should be made for all pharmaceutical liquids. Compatibility depends on the formulation, PE contact layer, concentration, pH, temperature and storage duration. Product-contact testing is recommended.
Sterilization compatibility must be confirmed for the exact multilayer structure and cycle. Provide sterilization temperature, pressure, duration and number of cycles so the material and finished seal can be evaluated.
Tinted or customized-opacity structures can be discussed. Buyers should provide the required light-protection specification or product sensitivity information for evaluation.
Compliance depends on the exact material structure, pharmaceutical application and destination market. Buyers should provide the applicable regulatory or pharmacopoeial requirements so available documentation and testing can be reviewed for the specific product.
Samples can be discussed for evaluating thickness, barrier performance, heat sealing, thermoforming and compatibility with the customer's packaging equipment and product.
Current product information indicates a typical starting quantity around 500 kg. Customized structure, width, color and other requirements can affect the final MOQ, so it should be confirmed during quotation.
Please provide the packaging application, product type, required structure, thickness, roll width, target OTR and WVTR, forming conditions, heat-seal conditions, sterilization process, regulatory requirements and estimated order quantity.
Send Wallis your required multilayer structure, thickness, roll width, OTR/WVTR target, forming process, heat-sealing conditions, product-contact requirements and estimated purchasing quantity.
If you are replacing an existing pharmaceutical packaging material, send the current technical specification or sample so the structure and packaging-line requirements can be evaluated before commercial production.
