Copyright © 2019 Utien Pack Co.,Ltd. All rights reserved. Site Map
Utien Pack tray sealing machines support multiple sealing technologies, allowing producers to select the most suitable packaging method based on shelf life, presentation, and sustainability goals.

Top seal packaging seals a film directly onto the tray rim without vacuum or gas replacement. It is one of the most widely used tray sealing methods due to its simplicity and cost efficiency.

Modified Atmosphere Packaging replaces the air inside the tray with a controlled gas mixture before sealing. This slows oxidation and bacterial growth, helping extend shelf life while preserving product quality.

Vacuum Skin Packaging draws a heated skin film tightly over the product and seals it to the tray under vacuum, eliminating air pockets and securing product position.

Unifresh® is Utien Pack’s proprietary VSP technology that supports controlled product protrusion while maintaining a secure seal. By tightly conforming the skin film to the product, Unifresh® enhances product visibility and presentation, making it ideal for premium food packaging applications.
Utien Pack provides tray sealing solutions covering different production scales and automation requirements. Our tray sealers are categorized by operation type to help customers quickly identify the right solution.
Automatic tray sealers are designed for continuous, high-output production. These systems integrate tray infeed, sealing, and discharge into a streamlined process and support advanced packaging technologies such as MAP and VSP. Ideal for large-scale food processors and industrial packaging lines.
Semi-auto tray sealers offer a compact and flexible solution for small to medium production volumes. They are suitable for operations requiring frequent tray changes, product testing, or controlled investment. Ideal for growing producers and flexible production environments.
FSC-400 Continuous Tray Sealer Machine can meet the packaging needs of large-scale production. With a professionally designed tray feeding mechanism, it can run continuously, significantly enhancing packaging efficiency. Based on varying packaging requirements, multiple sets of mold is optional for different products. Utien offers comprehensive and specialized packaging solutions tailored to client specifications.
Our semi automatic tray sealers FG-040 are designed to pack and seal prefabricated trays and are the perfect solution for small and medium-sized, batch, efficient and economical packaging. Also it’s an ideal entry-level devices for tray packaging. With MAP and VSP packaging option, this equipment is able to cover various top films onto trays of different materials.
The FSC-600 Automatic Continuous Tray Sealer is tailored for large production environments, capable of sealing 6 trays per cycle, significantly increasing productivity. It features an advanced tray feeding system for continuous operation, making it ideal for businesses with high-volume packaging demands.
Tray sealing technology is widely adopted across the food industry due to its flexibility, hygiene, and scalability.

Tray sealing solutions are widely used for fresh food, processed food, and convenience products where producers manage multiple SKUs, frequent tray changes, or seasonal production demands.
Learn More
Tray sealers enable hygienic meat packaging with options for top seal, MAP, and vacuum skin packaging. This allows processors to control shelf life, maintain color stability, and deliver consistent retail presentation across multiple tray sizes.
Learn More
For chilled and prepared meals, tray sealers support portion control, clean sealing, and compatibility with microwaveable and paperboard trays. This makes them ideal for convenience food producers balancing efficiency, shelf life, and sustainability.
Learn MoreA: Tray sealers, also known as tray lidding machines, heat sealers, or top sealers, are incredibly versatile packaging equipments. They are adept at affixing plastic film lids to trays made from different materials, accommodating a range of sizes and depths. This flexibility makes them an ideal packaging solution for a multitude of applications.
A: Tray sealers automate the packaging process by precisely placing product-filled trays into position, where they are then sealed with a top film through a heat sealing method. The machine applies heat and pressure to bond the film to the tray, creating an airtight seal that preserves the contents. After sealing, the excess film is trimmed, and the sealed trays are ejected for further processing.
A: A tray sealer machine comprises an in-feed conveyor for tray alignment, a sealing film dispenser, a heated sealing plate for bonding the film to the tray, a cutting device for trimming excess film, and an out-feed system to dispatch the sealed packages, all managed by a central control panel and often supplemented with vacuum and gas flush systems for modified atmosphere packaging.

A: Choosing the right tray sealing equipment for your business depends on your production needs. For high-speed, high-volume production environments, our FSC 400/600 model, an automatic tray sealer, is ideal as it offers efficient, continuous operation. If your needs are more modest or your volume is lower, our FG 020/040 model, a semi-automatic tray sealer, provides a more suitable, cost-effective solution. Each option ensures reliability and quality sealing for a range of tray packaging requirements.
A: Yes, our tray sealers are compatible with a variety of materials including PE, PS, C-PET, A-PET, EPP, EPET, and PP, allowing you to choose the best material for your product and sustainability goals.
A: Our food sealing machines, featuring Modified Atmosphere Packaging (MAP) technologies, significantly extend the shelf life of food products. Equipped with MAP, our meal tray sealers are particularly valuable for businesses looking to reduce spoilage costs, enhance food safety, and distribute their products over longer distances, ensuring fresher, safer food reaches consumers.
A: Tray sealing preserves food shape and is ideal for ready-to-eat meals, while vacuum sealing compresses products. Compare tray sealing and vacuum sealing method to decide which suits your needs.
Technical specifications and configuration details.
By continuing to use the site you agree to our privacy policy Terms and Conditions.