Skip to content
    • EN
    back
    Pack 303 LD
    Pack 303 LD

    Pack 303 LD

    High-integrity packaging for fresh and medical products

    Built for products that demand exceptional seal quality, the Pack 303 LD combines Syntegon’s proven flow wrapping technology with a long dwell sealing system for high-speed, hermetic packaging. Whether you’re packaging fresh, perishable foods or sensitive medical goods, the Pack 303 LD helps you meet the highest requirements for shelf life, product protection, and efficiency.

    Get a quote See it in action

    Explore what’s possible with the Pack 303 LD

    Some products require a little extra care — and the Pack 303 LD flow wrapper is built to deliver it. Whether you're packaging fresh foods, moist or sticky items, or medical devices in thicker films, you can count on strong, airtight seals that help protect product quality and extend shelf life.

    Built for flexibility, the Pack 303 LD handles a wide range of applications, with easy changeovers and tool-less adjustments that help your team stay focused on running product.

    Need high-integrity packaging for sensitive applications?

    Let’s talk about your packaging process.

    Flexible feeding options

    The Pack 303 LD integrates seamlessly into a wide range of production setups

    • Compatible with belt-based distribution systems for smooth product transfer
    • Supports robotic pick-and-place loading with platforms like Syntegon’s RPP
    • Available in multiple infeed layouts and lengths to match your space and throughput
    • Enables product grouping, turning, and buffering for consistent flow

    Integrates with downstream equipment for cartoning, case packing, and end-of-line automation

    With feeding options that adapt to your product and your line, the Pack 303 LD helps you streamline production — from infeed to final pack.

    Want technical details? Download the brochure.

    Long Dwell sealing for hermetic packages – across formats, films and functions

    When your application calls for high-integrity seals, thicker films, or longer seal times, the Pack 303 LD delivers, even when speeds vary or formats change.

    Key highlights:

    • Extended sealing time (up to 1 second) for strong, airtight seals
    • Consistent sealing conditions independent of machine speed
    • Twin-axis jaw motion applies heat gradually to protect delicate films
    • Ideal for applications with thicker or more sensitive packaging materials
    • Smart jam handling prevents damage and reduces unplanned stops
    • Tool-less maintenance and easy access to key components
    • Equipped with the latest Syntegon HMI and Synexio connectivity for improved usability, monitoring, and data driven production

    Need longer seal times for airtight, reliable packaging? 

    Get a quote
    test-pillow-package
    Pillow pack
    The go-to format for flow wrapping — compact, cost-efficient, and versatile. Suitable for everything from snack foods to medical products. 
    package-for-tall-products
    Gusseted pack for taller items
    Need extra vertical space? This format fits bulkier or higher-profile products without sacrificing seal strength or shelf appeal. 
    hole-punch-packaging
    Euro hole and hang hole punch

    Ideal for retail displays. Adds hanging functionality for pegboards — commonly used in snack packaging, hardware, and promotional sample packs. 

    straight-cut-packaging
    Straight-cut seals
    Delivers a clean, polished finish. A preferred choice for premium items where presentation is key, such as chocolates or beauty products. 
    zig-zag-packaging
    Zig-zag cut
    Fun and functional. The wavy edge adds visual flair and makes it easier for consumers to open. Great for grab-and-go items or kids’ products. 
    tear-notch-packaging
    Tear notch
    Designed for easy opening — no scissors needed. Perfect for single-use pouches, snack packs, or portable medical applications.
    horizontal-packaging
    Horizontal seal serrations
    The standard end-seal format in flow wrapping. Serrations run across the package’s width, ensuring consistent pressure, predictable tear behavior, and a familiar aesthetic. Commonly used for snacks, baked goods, and everyday CPG items. 
    vertical-packaging
    Vertical seal serrations

    Serrations run lengthwise, giving the package a modern, premium look. Offers more directional control when tearing and is ideal for slim or upscale products. Requires a tailored sealing jaw setup. 

    syntegon-bars-rendering

    Test before you commit – on your own product

    Retailers expect tight seals and clear batch or expiration coding.

    Our U.S-based test lab helps you validate real outcomes before you invest:

    • Send your product and film
    • We’ll test it on the Pack 303 LD
    • Receive wrapped samples, seal analyses, and a short video of your product on the line
    Request a lab test session
    new-richmond

    Made in the USA. Serviced in the USA.

    The Pack 303 LD is manufactured in New Richmond, WI and supported across North and Latin America with:

    • Free U.S.-based helpdesk support with fast response times
    • Local spare parts inventory for rapid turnaround
    • Service technicians based across the U.S.
    • PMMI-certified training, remote and on-site

    Smarter Packaging with Synexio

    The Pack 303 LD is ready for Industry 4.0 with Syntegon’s Synexio digital solution. Monitor machine data, track performance, and optimize production remotely — all in one intuitive dashboard.

    Key Benefits:

    • Live OEE Tracking: Get real-time insights on availability, performance, and quality
    • Remote Monitoring: View production data from anywhere
    • Data-Driven Maintenance: Predict issues before they cause downtime
    • Secure Cloud Platform: Built for data privacy and industrial security
    • Modular Subscriptions: Choose what you need – from machine-level insights to line-wide analytics
    Learn more about Synexio

    See the Pack 303 LD in action: Real products, real results

    Please accept marketing-cookies to watch this video.

    Watch the Pack 303 LD flow wrap a liquid medical pouch with consistent, hermetic seals. This short video gives you a real-world look at how the machine handles challenging applications with ease — combining product protection, clean operation, and smooth line performance in a compact, operator-friendly setup.

    pack-103-ld-serie

    Let’s scale your packaging — together

    Whether you’re upgrading for better seal integrity, handling more sensitive products, or simply looking for a machine that’s easier to run and maintain, the Pack 303 LD is built to meet you where you are — and help you grow from there.

    You don’t have to figure it out alone. Our team is here to help you find the right setup for your products, your space, and your long-term goals.

    Let’s talk about your application, your workflow, and how we can make packaging simpler and more reliable — together.

    Request a demo Get a quote Pack 303 LD Brochure

    Related machines and technologies

    syntegon-doboy-103-pack
    Pack 103
    The Pack 103 is an entry-level horizontal form-fill-and-seal (HFFS) machine that packages products by wrapping them in rollstock film and sealing them on all sides.
    Learn more
    pack-202
    Pack 202
    Whether you're scaling up from entry-level equipment or need a more flexible solution for multi-format production, the Pack 202 is built for where your business is headed.
    Learn more
    pack-301-id
    Pack 303 IN/ID
    From soft products to multipacks, the Pack 303 IN and ID are designed to handle what others can’t — with better control and stronger seals.
    Learn more
    pack-301-sk-pizza-flow-wrapper-shrink-wrapper-1
    Pack 301 SK
    Whether you’re packaging oversized products, bundling multi-packs, or integrating shrink film into your line, the Pack 301 SK is built to handle it
    Learn more
    Syntegon_Hygenic-High-speed-HFFS---pack-403
    Pack 403
    The Pack 403 helps you deliver more: faster changeovers, consistent results, and smooth integration with your line and your team. 
    Learn more
    pack-403-he
    Pack 403 HE
    Whether you’re packaging fresh or frozen foods, navigating strict sanitation requirements, or simply looking for a system that’s easier to clean and operate, the Pack 403 HE is built to support your goals
    Learn more
    sealing-competence-1
    All Syntegon horizontal flow wrappers
    Visually appealing, cost-efficient and extremely flexible: Flow wraps are the all-round solution for the packaging of food products and other piece goods.
    Learn more

    Read our latest food news

    Syntegon to Showcase Premier Innovations and Complete Packaging System Solutions at Pack Expo 2024
    30.08.2024
    Syntegon to Showcase Premier Innovations and Complete Packaging System Solutions at Pack Expo 2024

    Syntegon will highlight its latest innovations and comprehensive food packaging solutions at PACK EXPO International, to be held November 3-6, 2024.

    More
    New Syntegon Pack 202 Flow Wrapper
    New Syntegon Pack 202 Flow Wrapper

    Syntegon Technology has launched the next generation of fully automated horizontal flow wrapping...

    More
    Syntegon Robotic Solutions
    Syntegon Robotic Solutions

    Integrated robotic solutions are nothing new for Syntegon. With decades of robotics experience,...

    More
    Syntegon at Vitafoods Europe: Your strategic lifecycle partner for nutraceuticals
    Syntegon at Vitafoods Europe: Your strategic lifecycle partner for nutraceuticals

    Join us at Vitafoods Barcelona 2026! Discover the latest in nutraceuticals at booth 5H82 from May...

    More
    Sealing and cutting for horizontal flow wrappers
    Sealing and cutting for horizontal flow wrappers

    Discover Syntegon's tailored sealing and cutting solutions. Our custom sealing jaws, knives, and...

    More
    More Syntegon News

    Get a quote

    Tell us about your application and we’ll provide you with a customized quote to fit your production needs.