Single-Chamber Vacuum Sealer

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Introduction

The single-chamber vacuum sealer is an automated packaging machine that combines vacuuming and sealing functions. Constructed entirely from 304 stainless steel in accordance with national standards, it offers excellent corrosion resistance and structural strength, making it suitable for the demanding environments of the food processing, pharmaceutical, and electronics industries.

With its compact design and user-friendly operation, the machine is equipped with swivel casters at the base for flexible mobility, making it an ideal choice for small and medium-sized processing enterprises, laboratories, and retail stores seeking efficient vacuum packaging solutions. In addition to single-chamber vacuum packaging machines, we also supply dual-chamber vacuum packaging machines. If you have any needs for vacuum packaging equipment, please contact us for more details.

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Working Principle

This equipment operates on the principle of combining negative pressure vacuum extraction with heat sealing. The entire process is automatically controlled by a microcomputer, and the specific procedure is as follows:

Closing and Vacuuming: Place the packaging bag containing the items to be sealed flat on the lower work surface, with the bag opening positioned at the sealing bar. After closing the upper chamber, the vacuum pump starts to extract air from the chamber, removing the air from the bag until the preset vacuum level is reached.
Heat Sealing and Pressurization: Once the vacuum level reaches the set value, the vacuum pump stops. At this point, the pressure valve opens, and the air bladder inflates to push the pressure bar downward, firmly sealing the bag opening. Simultaneously, the heat sealing bar is instantly energized and heated to fuse and seal the bag opening.
Cooling and De-pressurization: After heat sealing is complete, the heating bar automatically de-energizes, and the pressure bar continues to hold the bag opening closed during cooling to ensure a secure and flat seal. Once cooling is complete, the vent valve opens, allowing air to re-enter the chamber, and the chamber automatically springs open, completing one cycle.

Technical parameters

Item	Specifications
Product Name	Vertical Single-Chamber Vacuum Sealing Machine
Model	WZ-400 Single-Chamber
Voltage	380V / 220V (Optional)
Power	2.5kW
Sealing Width	8mm – 10mm
Sealing Length	400mm
Packaging Capacity	2 – 4 cycles/minute
Dimensions	520 × 530 × 910mm
Machine Weight	Approx. 100kg
Material	304 Stainless Steel
Vacuum Pump	Configuration as needed (Domestic/Imported optional)
Applicable Packaging Materials	PP/PE food-grade vacuum bags, aluminum foil composite bags, etc.

Structural Components

Upper Chamber and Vacuum Lid: Constructed from thickened 304 stainless steel sheets, ensuring high strength and corrosion resistance. The upper chamber features built-in heating elements and sealing strips, effectively preventing electrical malfunctions caused by splashing liquid materials.
Lower Work Platform: The lower work platform features a flat design, making it easy to clean and convenient for handling spilled liquids or debris. The equipment is equipped with a patented negative-pressure automatic swing-lid system, which requires minimal effort to open and close and provides excellent sealing performance.
Electrical Control System: Utilizes a new waterproof computer control board with a clear interface and user-friendly operation. Users can independently set parameters such as vacuum time, heating time, and delay time according to packaging requirements to achieve precise packaging.
Vacuum System: The core component is the vacuum pump, which can be customized according to customer requirements. For example, an eco-friendly vacuum pump imported directly from Germany can be selected, featuring high vacuum levels (up to 0.1 mbar), low noise, oil-free operation, and fast pumping speed.
Chassis and Mobile Components: The frame structure is sturdy, and the base is fitted with wear-resistant rubber swivel casters, allowing for flexible movement and positioning within the workshop to meet the needs of various operational scenarios.

Advantages of Single-Chamber Vacuum Sealer

High Degree of Automation: Equipped with PLC control and a human-machine interface, the machine operates fully automatically throughout the entire process. The control panel is simple and intuitive; once parameters are set, the machine starts with a single button press, saving time and effort.
Excellent Sealing Performance: To address the issue of wrinkled bag openings, the machine features a specially designed shaping station that ensures a flat, wrinkle-free seal with strong airtightness. This effectively reduces the bag breakage rate and enhances the product’s visual quality.
Suitable for Both Dry and Wet Products: With a wide range of applications, the machine can package dry goods such as grains, tea, and herbs, as well as fresh meat, prepared foods, pickles, and other materials containing liquids or oils, truly achieving multi-functional use.
Rational Structural Design: Heating elements are installed in the upper chamber, away from the product area, preventing liquid splashes from causing short circuits and enhancing the stability and safety of the electrical system. The silicone sealing rings offer excellent pressure resistance, ensuring the vacuum chamber remains airtight even after long-term use.
Robust and Durable: Constructed entirely of stainless steel, the machine not only looks sleek and elegant but also withstands corrosion from salt, acidic substances, and humid environments in food products, ensuring a long service life.

Applications of Single-Chamber Vacuum Sealer

Single-chamber vacuum packaging machines are widely used in various scenarios requiring oxygen-free preservation, moisture protection, and rust prevention. They are compatible with a variety of packaging materials (such as plastic laminate bags and aluminum foil bags). Typical applications include:

Food Industry: Cooked food products such as roast chicken, beef, lamb, sausages, and ham; fresh products such as seafood and aquatic products; pickled vegetables, soy products, dried grains and legumes, tea, and dried fruits.
Pharmaceuticals and Chemicals: Herbal medicines, health supplements, chemical reagents, powdered additives, etc., to prevent oxidation and deterioration.
Electronics and Precision Instruments: Electronic components, precision hardware parts, rare metals, etc., to provide moisture-proof, rust-proof, and oxidation-proof protection.
Others: Feed, yeast, seeds, and other materials requiring long-term storage or isolation from external contamination.

Precautions for Use

Environmental Requirements: The equipment should be placed in a clean, dry environment. Avoid using it in damp, flammable, or explosive areas to prevent safety incidents or reduce the lifespan of electrical components.
Power Supply and Grounding: Use a power outlet rated for the machine’s power requirements, and ensure the equipment is properly grounded to prevent electric shock. Always unplug the power cord before performing maintenance or cleaning.
Vacuum Pump Maintenance: Regularly check the vacuum pump oil level; the oil should be filled to two-thirds of the sight glass. Replace the specialized oil according to the vacuum pump manual to ensure pumping efficiency.
Daily Cleaning: Keep the interior of the chamber clean. Promptly remove any liquids or debris that have dripped onto the work surface to prevent equipment corrosion or compromised sealing quality.

Why Choose Us?

In addition to single-chamber vacuum packaging machines, we also supply a wide range of vacuum packaging equipment, including dual-chamber vacuum packaging machines, in various models and specifications. We also offer complementary auxiliary equipment such as feeding, coding, and labeling systems, enabling one-stop shopping.
We use high-quality 304 stainless steel sheets to ensure the durability and hygiene standards of our equipment from the very beginning. Our core vacuum pumps come in a variety of configurations, allowing customers to choose the option that best suits their needs and ensures the optimal balance between performance and cost.
We have obtained multiple certifications, including ISO 9001 and CE, and consistently operate with integrity. We have successfully exported our products to over 120 countries and have earned a large base of loyal customers.

As a professional food machinery supplier, we are committed to providing customers with high-quality machinery. If you have any food machinery needs, please feel free to contact us at any time.