Vacuum Bag Packaging Process

Vacuum Bag Packaging Process

Vacuum bag packaging is a food packaging process that involves removing air from the bag and heat-sealing it to tightly adhere the composite film to the surface of the contents. This process helps reduce air retention, enhance preservation effects, and improve transportation stability.

What is vacuum bag packaging?

Vacuum bag, also known as Vacuum Bag, is a composite flexible packaging bag suitable for vacuum equipment. When packaging, the product is placed inside the bag, and then the air is removed from the bag using vacuum equipment. The bag mouth is then heat-sealed to form a sealed state.

Vacuum bags emphasize more than ordinary food bags.Sealability, puncture resistance, low-temperature adaptability, and conformabilityAfter vacuum sealing, the bag tightly adheres to the surface of meat, fish, ready-to-eat foods, or frozen products, forming natural wrinkles and a conforming texture, which helps reduce air retention and enhance the stability of food during refrigeration, freezing, transportation, and sales.

Vacuum Bag Packaging Process Advantages

Vacuum sealing provides better preservation, easy pouring, and a good user experience.

Vacuum bags reduce residual air inside the bag, minimizing contact between food and oxygen, which helps delay oxidation, flavor transfer, and moisture loss. They are suitable for packaging meat, fish, ready-to-eat foods, braised dishes, and pre-prepared meals.

Shrink wrapping packaging, more intuitive display

Clear vacuum bags adhere tightly to the contents after vacuum sealing, allowing consumers to directly view the product’s condition. Suitable for foods that require showcasing raw material quality, such as chicken breast, steak, fish slices, seafood, corn pieces, lotus root slices, and lemon slices.

Puncture-resistant, suitable for meat and fish

Meat, fish, seafood, and bone-in foods are prone to causing compression or puncture risks to packaging. Vacuum bags can choose puncture-resistant composite films such as PA/PE, PET/PA/PE, PET/NY/PE, to enhance packaging toughness and transportation stability.

Suitable for cold storage and refrigerated transportation

Vacuum bag – can be selected with low-temperature resistant composite film according to product requirements, suitable for refrigerated food, frozen meat, frozen seafood, and e-commerce cold chain delivery. The bag body is flexible and less prone to noticeable brittleness in low-temperature environments.

Cost andPackagingEfficient and Flexible

Vacuum bags have a simple structure, suitable for manual vacuuming, semi-automatic vacuuming, and automatic vacuum packaging equipment. The bag width, height, thickness, and material can be customized according to product specifications, making them ideal for small batch customization as well as large-scale production in food factories.

Vacuum Bag Packaging Parameters Introduction

The following are the common technical parameter ranges for vacuum bag packaging. They can be customized according to your product requirements.

Parameter Dimensions Specification Range / Options Description
Dimensions Specifications
Bag Width 60 – 400 mm Customizable for meat, fish, ready-to-eat foods, pre-prepared meals, and frozen food sizes
Bag Height 100 – 600 mm Suitable for small vacuum packaging, household packaging, commercial food packaging, and cold chain delivery packaging
Edge Width 5 – 15 mm Seal width can be adjusted according to vacuum strength, product weight, and sealing requirements.
Bag body thickness 70 – 200 μm Regular food can choose standard thickness, while meat, fish, bone-containing food and frozen food are recommended to choose thicker, puncture-resistant structures.
Bag Structure Three-sided vacuum bag, four-sided vacuum bag, flat-mouth vacuum bag, vacuum roll film Select based on packaging equipment, filling method, product display, and production efficiency.
Material Combinations
Clear Vacuum Type PA/PE、PET/PA/PE Suitable for transparent vacuum packaging of meat, fish, ready-to-eat foods, frozen products, corn slices, taro slices, lemon slices, etc.
Puncture-resistant PET/NY/PE、PET/PA/PE Suitable for packaging bone-in meats, fish, seafood, freeze-dried foods, and other firm contents
Low-temperature resistant type PA/PE、PET/PA/PE、PET/NY/PE Suitable for refrigerated, frozen food and cold chain transportation packaging, with good flexibility and low-temperature adaptability.
High barrier type PET/AL/PE、PET/AL/NY/PE、PET/VMPET/PE Suitable for packaging of ready-to-eat foods, braised dishes, pre-prepared meals, or high barrier food products that require light protection, oxygen barrier, moisture resistance, and aroma preservation.
Transparent Display Type PA/PE, PET/PA/PE, clear co-extruded film Suitable for vacuum packaging of meat, fish, seafood, and fruits and vegetables that require direct display of the product’s condition
Printing and Surface Finishing
Printing Process Offset printing, digital printing, partial printing Printable brand logo, product name, production information, storage instructions, barcode, and nutritional information
Print Color Count 1 – 10 Colors Clear vacuum bags can be optionally printed with partial printing, retaining the area for displaying the contents.
Surface finish Clear, Gloss, Matt, Partial Print, Aluminum Foil, Foil Lamination Choose different surface effects based on food display, brand style, and barrier requirements.
Clear Window Optional Aluminum foil or printed vacuum bags can retain localized transparent areas for easy display of the contents.
Functional Process
Vacuum compatible Optional Suitable for use with vacuum packaging machines, continuous vacuum equipment, and packaging lines in food factories.
Easy-tear notch Optional (U-shape / V-shape / Straight) Suitable for packaging of ready-to-eat foods, pre-prepared meals, retail foods, and convenience products, enhancing the opening experience
Rounded edges Optional Reduces sharp edges to prevent hand scratches, suitable for retail food, ready-to-eat meals, and portable packaging
Puncture-resistant reinforcement Optional Suitable for products with bones, fish bones, shrimp and crab shells, hard foods, or items subject to high transportation pressure
Freezer Compatible Optional Suitable for frozen meat, frozen seafood, frozen ready meals, and cold chain delivery packaging
Applicable Scenarios
Meat Vacuum Packaging Chicken breast, steak, pork, lamb, bone-in meats After vacuum sealing, the bag adheres closely to the surface of the meat, reducing air retention, suitable for refrigeration, freezing, and e-commerce delivery.
Fish and Seafood Packaging Fish slices, shrimp, crab, shellfish, frozen seafood It is recommended to choose puncture-resistant and low-temperature resistant composite films to enhance packaging stability.
Processed Meat Packaging Braised beef, braised beef paste, sausage, ham, braised meat delicacies Select transparent vacuum film or high barrier composite film based on shelf life requirements.
Ready-to-Eat Vegetable and Fruit Packaging Corn pieces, taro slices, lemon slices, pre-made dishes, semi-finished food ingredients Suitable for refrigerated display, cold chain transportation, and bulk packaging in food processing plants
Vacuum Roll Film Packaging Automatic PackagingReel FilmContinuous vacuum packaging Suitable for bulk production in food factories, the roll film can be customized in width and film structure according to equipment dimensions.
Business Parameters
Minimum Order Quantity (MOQ) Offset: 5,000 – 10,000 pieces; Digital: 500 – 1,000 pieces Minimum order quantity will be adjusted based on size, material, thickness, printing process, and order quantity.
Sample lead time Digital proof: 3 – 5 days; Print proof: 5 – 7 days Recommend confirming dimensions, thickness, material, vacuum sealing effect, and edge sealing strength before mass production.
Delivery Lead Time First order: 15 – 25 days; reorder: 10 – 15 days The specific cycle is determined by the order quantity, material inventory, printing process, and production schedule.
Customization Instructions Customize based on provided designs, samples, or product dimensions We can provide customized packaging solutions based on the shape, weight, refrigeration/freezing requirements, shelf life, and packaging equipment needs of the product.

Vacuum Bag Packaging Applicable Products

Meat Vacuum Packaging

Vacuum bags are suitable for packaging chicken breast, steak, pork, lamb, bone-in meats, and fresh chilled meats. The transparent film allows direct display of the meat’s condition, and after vacuum sealing, the bag conforms closely to the contents, helping to reduce residual air.

Fish and Seafood Packaging

Fish fillets, shrimp, crab, shellfish, and frozen seafood can be vacuum-packed. Due to the risk of puncture from seafood edges, fish bones, and shells, it is recommended to choose puncture-resistant composite films and increase the thickness appropriately.

Ready-to-Eat and Braised Food Packaging

Sausage, cured meats, ham, cooked chicken breast, and other ready-to-eat products can be packaged in vacuum bags. Depending on shelf life and display requirements, transparent film, aluminum foil film, or metallized composite film can be selected.

Fruit and Vegetable Packaging and Semi-Finished Food Packaging

Corn segments, taro slices, lemon slices, bamboo shoots, mushrooms, and semi-finished ingredients can be vacuum-packed, suitable for food processing plants, central kitchens, and cold chain distribution scenarios.

Vacuum Roll Film Automatic Packaging

For bulk production in food factories, vacuum packaging rolls can be used with automatic packaging equipment to improve packaging efficiency. The rolls can be customized according to the equipment width, packaging dimensions, film thickness, and printed patterns.

Vacuum Bag Packaging Cases