Automatic Nitrogen Flush Food Zipper Doypack Packaging Machine

Revolutionary nitrogen flush Doypack machine ensures extended shelf life, airtight sealing, and precise gas flushing for premium food packaging quality.

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Industries Application Features Parameters Pakcaging Styles Warranty and Services

Industries Application

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The Automatic Nitrogen Flush Food Zipper Doypack Packaging Machine is widely used in the food industry, particularly for packaging perishable items like snacks, nuts, coffee, and dried fruits. By integrating nitrogen flushing into the packaging process, the machine extends product shelf life by minimizing oxygen exposure, preserving freshness and flavor. The zipper closure on the Doypack further enhances convenience and reusability for consumers. This fully automated solution, from bag forming to filling and sealing, increases efficiency and ensures consistent, high-quality packaging, making it ideal for large-scale food production environments looking to improve operational efficiency and reduce costs.

Features

Freshness Preservation System
Lock in Taste, Extend Shelf Life

Designed for oxygen-sensitive foods like coffee, nuts, and dried fruits, this machine integrates nitrogen flushing into each packaging cycle. By replacing air with food-grade nitrogen before sealing, it prevents oxidation and extends product freshness, delivering longer shelf life with every resealable pouch, making it ideal for packaging organic, health-conscious, or export-bound products.

Integrated Nitrogen Flushing System
Integrated nitrogen flushing and sealing system

Ensures a controlled nitrogen environment inside the pouch before sealing, protecting sensitive food products by reducing oxidation.

Pouch Pre-Opening Technology
Advanced zipper pouch pre-opening technology

Features an automated mechanical arm and suction system to precisely open the zipper doypacks, ensuring efficient handling of intricate pouch designs.

Dynamic Heat-Sealing Mechanism

Utilizes temperature-regulated sealing jaws that create airtight seals while simultaneously completing the nitrogen flush, optimizing both freshness.

Servo-Driven Filling System
High-speed servo-driven filling system for granular and solid foods

Ensures fast and precise filling, specifically tailored for free-flowing food products like nuts, grains, or snacks, improving production rates.

Multi-Format Pouch Compatibility

Engineered to meet strict food safety regulations, with easy-to-clean components that allow quick disassembly for maintenance, minimizing downtime.

User-Friendly HMI Systeam
User-friendly HMI with nitrogen flush monitoring

Features real-time controls with visual feedback for nitrogen pressure and flow rates, ensuring operators can monitor the flushing process.

Food-Grade Stainless Steel
Hygienic food-grade stainless steel construction with tool-less maintenance

Engineered to meet strict food safety regulations, with easy-to-clean components that allow quick disassembly for maintenance, minimizing downtime.

Integrated Pouch Detection System
Integrated pouch detection and rejection system with oxygen level monitoring

Checks for sealing and nitrogen flush integrity, rejecting pouches that fail to meet oxygen reduction thresholds, and ensuring well-sealed pouches.

Parameters

Type	Compact Doypack Filling Machine
	LDB-300	LDB-430	LDB-600
Bag Material	Multi-layer Composite Premade Bag (e.g.:PET/PE)
Premade Bag Type	3-sides sealing bag,stand-up bag
Upgraded Bag Type	Gusset Bag, Zipper Bag, Box bag (Need additional purchase of functional device)
Bag Size	80mm≤ W ≤300mm	80mm≤ W ≤300mm	250mm≤ W ≤500mm
	100mm≤ L ≤300mm	100mm≤ L ≤430mm	380mm≤ L ≤600mm
Speed	0~15bags/min		0~10bags/min
Sealing Type	Straight grain, pitch is 1mm (Optional reticulate)
Sealing Width	10mm（5--20mm) can be customized
Votage	220V,Single-phase,50/60HZ,1.2KW
Air Pressure	0.65Mpa
Air Consumption	0.3m³/min（Standard machine,no additional function)
Body Dimension	17706001230mm		167711401450mm
Machine Weight	300kg	350kg	450kg

Pakcaging Styles

Zipper Stand-up Pouch (Doypack): This is the most common style for nitrogen flushing applications. It features a bottom gusset for standing upright and a resealable zipper, making it ideal for food products like nuts, coffee, snacks, and dried fruits. The nitrogen flush helps to displace oxygen, preserving product freshness and extending shelf life.
Flat Bottom Zipper Pouch (Box Pouch): This style has a flat base, offering more stability and volume, making it suitable for larger quantities of food items. The zipper ensures the pouch can be resealed, and nitrogen flushing protects the quality of products like bulk snacks or grains.
Quad Seal Zipper Pouch: This pouch features seals on all four sides, providing additional strength and durability, making it ideal for heavier food products such as pet food or larger snack quantities. The zipper adds convenience for resealing, while nitrogen flushing helps maintain product quality by reducing oxidation.

Warranty and Services

12-month quality warranty.
24-month local fast replacement service for major electrical parts.
Comprehensive shipment services, including coordination of logistics, delivery tracking, and ensuring timely delivery to your location.
Technical support , Manual instructions, installation, and operation guides with delivery.
On-site setup, operation, and maintenance training as needed.

After the warranty period, we offer:

Lifelong maintenance services.
Spare parts support.
Operational training to ensure reliability.
Quick responses to any inquiries from our customer service team.

Automatic Nitrogen Flush Food Zipper Doypack Packaging Machine

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