Heat-Sealable BOPET Polyester Film

Heat-Sealable BOPET Polyester Film

HSQY heat-sealable BOPET polyester film combines the strength, clarity and dimensional stability of biaxially oriented PET film with a dedicated heat-sealing surface. It is designed for packaging and converting projects where the sealing layer must match the intended material and process.

Available thicknesses range from 12 to 75 μm, with customized roll widths up to 1250 mm. Clear, hazy and colored options, along with selected surface treatments, are available according to order requirements. The standard minimum order quantity is 1000 kg.

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Heat-Sealable BOPET Film Images

Heat-Sealable BOPET Film Specifications

The following supply specifications provide a starting point for film selection. Final sealing performance and documentation depend on the film grade, sealing layer, target substrate and processing conditions.

How Heat-Sealable BOPET Film Works

Standard BOPET film has excellent mechanical and thermal characteristics but is not normally heat-sealable by itself. A specially formulated sealing layer enables bonding under controlled temperature, pressure and dwell time. Depending on the product grade, the opposite surface may be treated to support printing or lamination.

Substrate compatibility matters. Heat-sealable polyester grades may be engineered for PET-family substrates such as APET or CPET. Direct sealing to PE, PP or PS is not guaranteed and may require a different sealing layer or laminate construction. Confirm the exact tray or film material before production.

Permanent and peelable seals are different. A film that forms a strong permanent bond should not automatically be specified as an easy-peel lid. If controlled opening force is required, request a suitable peelable structure and test it on the actual package.

Key Advantages of Heat-Sealable Polyester Film

Heat-seal functionality: A dedicated sealing surface supports package closure when correctly matched with the substrate and sealing equipment.

Mechanical strength and dimensional stability: The biaxially oriented polyester base provides strength and stable handling during printing, laminating and converting.

Clear presentation: Transparent options allow visibility of packaged goods and can support printed flexible packaging and lidding applications.

Converting options: Selected print-treated, slip-treated and hardcoat finishes can be specified where compatible with the required heat-seal construction.

Custom roll specifications: Thickness, width, color and surface requirements can be discussed to fit production-line and downstream converting needs.

Applications of Heat-Sealable BOPET Film

PET food tray lidding: Film structures can be selected for applications involving APET and CPET trays after compatibility and seal-performance testing. The required peelability, seal integrity and food-contact compliance must be confirmed for each project.

Flexible food packaging: Used in suitable composite packaging and printed laminates requiring a polyester outer layer and a defined heat-seal function. Barrier and shelf-life requirements depend on the complete packaging structure.

Pharmaceutical and specialty packaging: Suitable constructions may be evaluated for packaging laminates or blister-related applications. Compliance and functional requirements must be checked against the finished pack.

Industrial laminates: Applicable to selected bonding, protection and composite converting processes where a heat-sealable polyester layer is specified.

Electronics applications: Polyester film can be used in electrical and electronic products, but electrical insulation performance must be verified separately. Packaging-grade heat-sealable film should not be assumed to meet an electrical-grade specification.

Selecting the Right Film for Your Sealing Process

For an accurate quotation and sample recommendation, provide your target substrate (for example, APET, CPET or a laminate), the required film thickness and roll width, the packaging or converting application, and whether the seal must be permanent or peelable.

Where available, also share the machine type, sealing temperature, dwell time, pressure, print or lamination process, and any applicable food-contact or regulatory requirements. Trial sealing on the final packaging line is recommended before bulk purchase.

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Quality Documentation and Certifications

HSQY can discuss applicable test reports and quality documentation for the selected film grade. Request the current certificate or report, its scope and validity when SGS testing, ISO quality-system documentation, RoHS information or food-contact declarations are required. Suitability for a specific market or finished package must be confirmed separately.

HSQY at Global Exhibitions

HSQY has participated in industry exhibitions across Asia, the Middle East, the Americas, Australia and Europe, engaging with international buyers and packaging-industry partners.

Frequently Asked Questions

What is heat-sealable BOPET polyester film?

It is a biaxially oriented PET film with a dedicated heat-sealing layer. The polyester base supplies strength and dimensional stability, while the sealing layer allows bonding under suitable processing conditions.

Can heat-sealable BOPET film seal to APET or CPET trays?

Some heat-sealable polyester constructions are designed for APET or CPET. The actual sealing layer, tray surface, temperature, dwell time and sealing pressure must be checked for the required seal strength and opening behavior.

Can this film seal directly to PE or PP?

Not all heat-sealable BOPET grades can seal to PE or PP. Many polyester sealing layers are intended for PET-family substrates. Tell HSQY the exact target material so the correct film or laminate structure can be evaluated.

Is the seal permanent or peelable?

That depends on the film grade and heat-seal layer. Permanent-seal and peelable-seal requirements should be specified separately and tested on the intended packaging.

What thickness and width are available?

HSQY lists film thicknesses from 12 to 75 μm and custom roll widths up to 1250 mm. Confirm the available grade and width for your specific application.

Is the film suitable for direct food contact?

Food-packaging applications require a film grade and complete packaging structure that meet the relevant regulations. Request applicable food-contact documentation for the destination market before approval.

Can the film be printed or laminated?

Selected print-treated, slip-treated and hardcoat options are available. Specify the printing or lamination process and confirm that the requested surface treatment is compatible with the sealing layer.

What heat-sealing temperature should we use?

The required temperature depends on the sealing layer, substrate, equipment, pressure and dwell time. Request grade-specific technical data and verify a suitable operating window through production trials.

Are samples available and what is the MOQ?

A4 film samples can be requested for preliminary material evaluation, with freight collected. The general MOQ is 1000 kg, subject to thickness, width, treatment and order requirements.

About HSQY Plastic Group

HSQY Plastic Group supplies polyester films and plastic materials for packaging and industrial applications to buyers worldwide. Our team helps converters, packaging manufacturers and distributors review material specifications, sample requirements and order details.

Share the intended application, substrate, thickness, width and estimated order volume to discuss suitable film options and obtain a quotation.

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