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Vacuum Sealer vs. Continuous Band Sealer: Key Differences, Applications, and Buying Guide Many businesses face the same question when selecting packaging equipment: Should I choose a vacuum sealer or a continuous band sealer? Although both machines are used for packaging and sealing products, they serve very different purposes. A vacuum sealer removes air before sealing, making it ideal for products requiring freshness preservation and oxidation prevention. A continuous band sealer focuses on high-speed sealing, making it the preferred choice for high-volume packaging operations. Choosing the wrong equipment can lead to reduced efficiency, poor packaging quality, and unnecessary costs. Quick Answer: Vacuum Sealer or Continuous Band Sealer? Need to extend shelf life or prevent oxidation: Choose a vacuum sealer Need high-speed, high-volume sealing: Choose a continuous band sealer Need both vacuum packaging and high volume: Evaluate a continuous vacuum sealer Need only standard bag sealing at lower volume: An impulse sealer or foot sealer may be sufficient 1. What Is a Vacuum Sealer? A vacuum sealer removes air from the package before creating the final seal. By reducing oxygen inside the package, vacuum sealing helps extend shelf life, reduce oxidation, prevent moisture damage, and improve storage stability. Vacuum sealers are ideal for extending shelf life — making them a standard choice for food processing, agricultural products, and moisture-sensitive industrial components. Based on Dailysealing's practical experience across food processing, agricultural packaging, and electronic components applications, products sensitive to oxygen or moisture consistently benefit most from vacuum packaging. Fresh meat, seafood, cooked foods, and agricultural produce are among the most common vacuum packaging applications. Common Vacuum Sealer Applications Fresh meat and seafood Cooked and processed foods Coffee beans, tea, and nuts Agricultural produce Electronic components and precision parts Medical supplies and consumables Key Advantages of Vacuum Sealers Extends product shelf life significantly Reduces oxidation and moisture damage Improves food freshness and storage quality Protects sensitive components from environmental exposure Available in multiple configurations for different output volumes If your primary packaging goal is preservation rather than just sealing, a vacuum sealer will almost always outperform a standard bag sealer. 2. What Is a Continuous Band Sealer? A continuous band sealer is designed for continuous sealing operations. Products move through a conveyor system where the bag passes through heating and cooling zones to create a consistent seal — without stopping between bags. Continuous band sealers are suitable for high-volume packaging where throughput and consistency are the priority, not air extraction. From Dailysealing's experience serving clients in food manufacturing, agricultural processing, and industrial packaging, businesses typically transition from manual impulse or foot sealers to continuous band sealers when daily packaging volume exceeds several hundred bags — significantly improving production efficiency and seal consistency. Common Continuous Band Sealer Applications Snacks, candies, cookies Dry goods, tea, coffee Powder and granule products Hardware and industrial components Agricultural goods (rice, grains, feed) General PE, aluminum foil, and laminated pouches Key Advantages of Continuous Band Sealers High throughput for large-volume operations Consistent seal quality across all bags Reduced manual handling and labor costs Continuous operation without stops between bags Compatible with production line integration If your product does not require vacuum packaging but your daily output is growing, a continuous band sealer delivers far better efficiency than manual sealing equipment at scale. 3. Vacuum Sealer vs. Continuous Band Sealer: Full Comparison The best choice depends on product characteristics and packaging volume. The table below covers the key differences across the most important evaluation criteria for B2B packaging buyers: FeatureVacuum SealerContinuous Band Sealer Primary Function Removes air, then seals Seals continuously at high speed Shelf Life Improvement ✅ Excellent Limited Packaging Speed Moderate ✅ High High-Volume Production Depends on model ✅ Excellent Oxidation Protection ✅ Excellent Limited Food Preservation ✅ Excellent Moderate Production Line Integration Available on certain models ✅ Excellent Labor Reduction Moderate ✅ High 4. Which Is Better for Food Packaging? The answer depends on the specific food product. Based on Dailysealing's technical team's experience across food processing, central kitchen, and agricultural packaging clients, different food categories have distinctly different packaging equipment requirements: Recommended equipment by food product type: Fresh meat, seafood, cooked foods: Vacuum sealer — shelf life extension is the priority Tea, coffee beans: Vacuum sealer or continuous band sealer, depending on preservation requirements Snacks, cookies, candy: Continuous band sealer — high-volume sealing efficiency Dry goods, powders, grains: Continuous band sealer High-volume food processing: Continuous band sealer or continuous vacuum sealer 5. When Should You Choose a Vacuum Sealer? ① Product Requires Longer Shelf Life Meat, seafood, cooked foods, and marinated products deteriorate quickly when exposed to air. Vacuum packaging significantly extends their usable shelf life. ② Product Is Prone to Oxidation Tea, coffee, nuts, and electronic components degrade when exposed to oxygen and humidity. Vacuum packaging significantly reduces this risk. ③ Product Needs Cold-Chain or Long-Distance Shipping Products going through freezing, refrigeration, or long-distance transit benefit from the added protection vacuum packaging provides during extended storage. ④ Product Contains Liquid or Moisture Liquid-content products are better handled by a chamber vacuum sealer, which creates negative pressure around the entire bag rather than extracting directly from inside. 6. When Should You Choose a Continuous Band Sealer? ① Daily Packaging Volume Is High When daily output reaches hundreds of bags or more, manual sealing equipment creates a production bottleneck. A continuous band sealer dramatically improves throughput. ② Product Does Not Require Vacuum If the packaging goal is containment, moisture resistance, or dust protection — rather than air removal — a continuous band sealer is the more efficient solution. ③ Consistent Seal Quality Is Required The conveyor-driven process maintains a consistent sealing speed, eliminating operator-to-operator variation and improving overall packaging quality. ④ Labor Efficiency Is a Priority Continuous sealing machines significantly reduce manual sealing time, freeing operators for other production tasks and lowering cost per unit packaged. 7. What If You Need Both Vacuum Sealing and High Volume? Some operations require both vacuum packaging and high production output simultaneously. In these situations, a continuous vacuum sealer combines automated conveyor operation with integrated vacuum packaging — making it suitable for food processing plants, meat and seafood producers, and large-scale agricultural packaging operations. A continuous vacuum sealer may be the right solution when: Vacuum packaging is required and daily output is high Production line efficiency needs to be maximized Reducing manual labor in the packaging process is a priority Both shelf-life extension and high-volume output are required simultaneously 8. Four Questions to Answer Before Choosing When selecting between a vacuum sealer and a continuous band sealer, equipment price should not be the primary factor. The right machine is the one that matches your product characteristics, packaging requirements, and production volume. 1. Does the product need vacuum packaging? Products requiring freshness or oxidation protection need a vacuum sealer. If only containment sealing is needed, a continuous band sealer is more efficient. 2. What is your daily packaging volume? Low volumes suit manual or compact equipment. Higher volumes justify a continuous band sealer or continuous vacuum sealer investment. 3. What packaging material are you using? PE bags, aluminum foil, laminated pouches, and vacuum channel bags each require different sealing temperatures and machine configurations. 4. Does the product contain liquid or moisture? Liquid-content products require specialized vacuum sealing configurations. A chamber vacuum sealer is often the most appropriate solution for wet or high-moisture products. The following questions are compiled from Dailysealing's technical team's experience working with clients in food processing, agricultural packaging, electronics manufacturing, and industrial packaging applications. Frequently Asked Questions Q1: What is the main difference between a vacuum sealer and a continuous band sealer? A vacuum sealer removes air from the package before sealing — this is its defining function. A continuous band sealer seals the bag opening at high speed without extracting air. The core difference is whether air removal is part of the packaging requirement. If shelf life and oxidation protection matter, a vacuum sealer is the right choice. If throughput and efficiency at volume are the priority, a continuous band sealer is more appropriate. Q2: Which machine is better for food packaging? It depends on the product. For meat, seafood, cooked foods, and products requiring shelf-life extension, a vacuum sealer is generally the better choice. For snacks, dry goods, and high-volume food manufacturing that does not require vacuum packaging, a continuous band sealer provides higher efficiency and output consistency. Q3: Can a continuous band sealer perform vacuum packaging? No. Standard continuous band sealers only heat-seal the bag opening and do not extract air. For vacuum packaging requirements, a vacuum sealer is necessary. For operations that need both vacuum packaging and high-volume continuous output, a continuous vacuum sealer performs both functions in a single automated process. Q4: Which machine is better for large-scale production? For high-volume packaging that does not require vacuum sealing, a continuous band sealer offers superior throughput and operational efficiency. If high-volume vacuum packaging is required, evaluate a continuous vacuum sealer — which integrates automated conveyor operation with vacuum packaging capability in a production line format. Q5: How do I choose between the two? Start by answering four questions: Does the product need vacuum packaging? What is your daily output volume? What bag material are you using? Does the product contain liquid or moisture? These four criteria — product characteristics, packaging volume, bag material, and moisture content — will narrow down the right equipment type for your application. About This Article This article was prepared by the Dailysealing technical team. Daily Sealing System Co., Ltd. is a Taiwan-based manufacturer specializing in sealing machines and vacuum packaging equipment. Our product range includes vacuum sealers, external vacuum sealers, chamber vacuum sealers, continuous band sealers, continuous vacuum sealers, foot sealers, impulse sealers, medical pouch sealers, and customized sealing equipment. The company holds ISO 9001:2015 certification and carries CE, FDA, EU No.10/2011, and BPA Free certifications. Patents are registered in Taiwan, the United States, Europe, Germany, Japan, and China. Content in this article is based on actual packaging equipment application experience, equipment specifications, and industry practice — intended to support equipment evaluation by B2B buyers and procurement teams. Not Sure Whether to Choose a Vacuum Sealer or a Continuous Band Sealer? Share your product type, bag material, and daily output volume. The Dailysealing technical team can evaluate your requirements and recommend the most suitable sealing equipment for your operation. View All Sealing Machine Series Contact Us // //  

Commercial UV Knife Sterilizer Cabinets: Capacity, Voltage, Rack Design & Bulk Buying Guide Meat plants, seafood processors, central kitchens, butcher operations and food factories handle large numbers of knives every day, and cleaned knives still need to be stored in a controlled, organized way. A UV knife cabinet is one piece of that hygiene process. For importers, distributors and restaurant-equipment buyers, the harder questions come before the first order: how many knives must one cabinet hold, how long are the blades, which voltage does the destination market use, and what documents and after-sales support come with the unit? This guide explains how procurement teams compare commercial UV knife sterilizer cabinets by capacity, knife length, rack design, UV exposure, installation, voltage and safety, and which specifications to confirm before a volume or distributor order. 1. What Is a Commercial UV Knife Sterilizer Cabinet? A commercial UV knife sterilizer cabinet is designed to store cleaned knives inside an enclosed cabinet while exposing their surfaces to UV light under controlled operating conditions. It should be used as part of a hygiene process, not as a substitute for cleaning. Knives need to be washed and free of residue before they are placed in the cabinet. The same type of equipment is sold under several names, including UV knife sterilizer, UV knife sanitizer cabinet, UV knife disinfection cabinet and ultraviolet lamp cabinet for knives. These terms are used interchangeably in the market, so buyers should compare actual specifications — not product names. "Sterilizer" is a common market term for this equipment category; actual microbial-reduction performance depends on the UV source, exposure conditions, cabinet design and supporting test data. Quick Answer: What Should Buyers Confirm Before Ordering? Before requesting a quotation, confirm the knife quantity, maximum knife length, handle thickness, rack design, installation space, local voltage and frequency, UV safety features, documentation and after-sales support. Knife quantity: how many knives are stored at one time Knife dimensions: maximum length, blade width and handle thickness Rack design: standard rack, or reinforced rack for wider or heavier knives Installation: wall-mounting space and cabinet dimensions Electrical configuration: voltage, frequency and plug type for the destination market Safety and maintenance: UV shielding, lamp replacement and spare parts Documents and support: manuals, labeling, warranty and export documents 2. Who Typically Buys UV Knife Sterilizer Cabinets? Commercial UV knife cabinets are typically considered wherever many knives are shared, used frequently and need to be stored in a central, organized place. Common buyer groups include: End users Meat processing plants Seafood processing facilities Commercial and central kitchens Butcher operations Food factories Trade buyers Food-processing equipment distributors Restaurant equipment importers Kitchen equipment wholesalers Brands seeking OEM supply Whether a UV knife cabinet satisfies a particular hygiene regulation, customer audit or import requirement depends on the product, the country and the authority concerned. Buyers should confirm this with their own regulators and customers — it should not be assumed from the equipment type alone. 3. Capacity: How Many Knives Does Your Facility Need to Store? Start with the working knife set at one station, not with a model number. Capacity falls into three practical categories: Lower-capacity cabinet For a small knife set at one workstation, a small kitchen team or limited wall space. Reinforced rack design For wider, heavier or longer knives — such as Chinese cleavers or knives with thick handles — where stable positioning matters more than extra capacity. Higher-capacity double-door cabinet For stations or teams that use more knives at the same time and have enough wall space for a wider cabinet. The specific cabinet models in each category are listed in the product section at the end of this guide. 4. Knife Length, Handle Thickness and Rack Design Capacity alone does not tell a buyer whether the knives will actually fit and stay stable. A professional specification covers the dimensions of the knives themselves: ConfirmWhy it matters Maximum knife length The longest knife must fit the cabinet; For the three Daily Sealing models currently listed, the published maximum knife length is 385 mm Blade width Wide blades such as cleavers take up more rack space and can shade neighboring knives Handle thickness Thick handles affect how knives sit in the rack and how much space they need Rack spacing Spacing between knives affects both stability and UV exposure Stability Knives that swing or shift can overlap each other; baffles or a reinforced rack are designed to help hold them in place Shadowing / obstruction Any part of a blade hidden from the light receives less exposure (see the next section) 5. Why UV Exposure Depends on Placement UV light treats surfaces it can directly reach. If a blade is overlapped by another knife, or hidden behind a thick handle, the shaded area receives less UV exposure. This is why packing more knives into a cabinet does not make it more effective. Placement problems typically come from: Overlapping blades One blade partly covers another and blocks the light. Knives placed too close Insufficient spacing creates shadows between neighboring knives. Handles shading the blade Thick handles or poor angles can hide part of the blade. Surface contamination Residue, grease or other contamination can shield parts of the blade from direct UV exposure. Follow the manufacturer's cleaning and drying instructions before placing knives in the cabinet. Effectiveness also depends on the UV source, exposure time and distance, none of which can be judged from the cabinet's name. Ask the supplier for the lamp specification and the manufacturer's recommended operating procedure instead of assuming a fixed exposure time. 6. Installation Requirements for Commercial Buyers Many UV knife cabinets are wall-mounted. Before ordering, confirm the physical and workflow conditions at the installation site: Wall-mounting space: available wall width and height, and whether the wall can support the cabinet Cabinet dimensions: compare against the wall space and the door-opening clearance Workflow position: a place that suits the movement of cleaned knives from washing to storage Cleaning access: room to open the doors and wipe down the cabinet Local voltage: a nearby outlet matching the cabinet's electrical configuration Operating environment: kitchen or processing-room conditions such as humidity and washdown practices 7. Voltage and Destination Market For overseas buyers, electrical compatibility is one of the first things to settle. Before ordering, confirm each of the following with the supplier: ItemWhat to confirm Destination country Where the cabinets will be installed and used Voltage The mains voltage at the installation site. The product pages of the three Daily Sealing models currently listed show 110V and 220V Frequency 50 Hz or 60 Hz, as used in your market Plug / power configuration Plug type and power-cord arrangement required locally Local electrical requirements Any electrical or product-marking requirements that apply in your country Buyers should confirm the required electrical configuration before ordering. Availability of a given voltage, frequency or plug arrangement for a specific order is agreed in the quotation and is not assumed for every market. 8. Safety Questions Buyers Should Ask the Supplier UV-C radiation can be harmful to eyes and skin, so safety design is a core procurement question — more important for an overseas buyer than a simple "how to use" explanation. Useful questions to put to any supplier: UV shielding: how is the user protected from direct exposure? Viewing window: what material is used and is it UV-protective? Lamp specification: type, power rating and wavelength Replacement procedure: how are lamps changed safely? Maintenance parts: which parts can be supplied afterwards? Operating instructions: manuals, warning labels and recommended exposure procedure Door-open protection: ask whether the specific cabinet includes a door interlock or other protection that limits UV exposure when the door is opened Documentation: which certificates or test documents exist for the specific model Verify against the product page, not by assumption. The public product pages list a stainless steel body, UV glass viewing window and wall-mounted design. Lamp wavelength and model-specific test or certification documents are not stated on the public pages, so buyers should request the documents applicable to the exact product and destination market during quotation. 9. What Importers and Distributors Should Confirm Before Bulk Ordering For distributor and volume orders, the cabinet specification is only part of the decision. The following are inquiry items to confirm with the supplier — they are not claims that every item is available: AreaConfirm with the supplier Unit specification Unit dimensions, net weight and gross weight Packing and loading Carton dimensions, quantity per carton, palletization and container loading quantity Electrical Voltage options for your market Spare parts Spare parts and replacement lamps, and how they are supplied Documents Manuals, labeling and export documents Branding OEM branding requirements, if any After-sales Warranty terms and after-sales support arrangements Daily Sealing's EN product category page states that the company also offers OEM/ODM and custom-made services. The scope for a specific order — including minimum quantities, lead times and pricing — is confirmed through a formal quotation. 10. RFQ Checklist for Commercial UV Knife Sterilizers A complete request for quotation shortens the exchange and helps the supplier recommend the right cabinet. Provide as much of the following as you can, and write "to be confirmed" for anything not yet known: Buyer informationWhat to provide Destination market Country / region Application Food factory / central kitchen / distributor resale Knife quantity Typical number used at one time Knife dimensions Maximum length / blade width / handle thickness Required capacity Lower / reinforced rack / higher capacity Electrical requirement Voltage / frequency / plug type Installation Wall-mounted / available wall space Order volume Units / mixed models / shipment plan (LCL or FCL) Branding Standard or OEM Documents Required certifications / manuals / labels Shipping information Destination port, preferred trade term (EXW / FOB / CIF, if known) Daily Sealing UV Knife Cabinets: Product Overview The table maps the three capacity categories to Daily Sealing's current cabinets, using only the specifications published on the product pages. Details not published there — such as carton size, gross weight and lamp wavelength — should be requested in the quotation. See the full Commercial UV Knife Sterilizer Cabinets category. Buyer needCapacity / rack designKey published specificationsProduct Small knife set at one station Lower-capacity single-door cabinet; 7 knives 450 x 130 x 580 mm; 10 kg; 110V / 220V; 10W; max. knife length 385 mm; stainless steel body; wall-mounted View productModel DS-C10 Wider, heavier or longer knives Reinforced rack design (baffle and double shelf); 7 knives 450 x 130 x 580 mm; 10.5 kg; 110V / 220V; 10W; max. knife length 385 mm; stainless steel body; wall-mounted View productModel DS-C10A More knives in use at the same time Higher-capacity twin-door cabinet; 14 knives 810 x 130 x 580 mm; 20 kg; 110V / 220V; 20W; max. knife length 385 mm; stainless steel body; wall-mounted View productModel DS-C15 Lower-capacity cabinet Single door, 7 knives, wall-mounted View Lower-Capacity Cabinet Reinforced rack design Baffle and double shelf for wider or longer knives, 7 knives View Reinforced-Rack Cabinet Higher-capacity twin-door cabinet Twin door, 14 knives View Twin-Door Cabinet The following answers are based on Daily Sealing System's manufacturing experience since 2010, the published specifications of its UV knife cabinets, and its technical support for international B2B buyers. Frequently Asked Questions Q1: Is a UV knife sterilizer the same as a UV knife sanitizer or disinfection cabinet? The names are used interchangeably in the market. Compare the actual specifications — UV source, capacity, rack design, safety features and operating instructions — rather than the product name. Q2: Can a UV knife cabinet replace washing the knives? No. A UV knife cabinet should be used as part of a hygiene process, not as a substitute for cleaning. Food residue, grease and other surface contamination can reduce direct UV exposure, so knives should be properly cleaned and prepared before being placed in the cabinet. Q3: Does loading more knives improve results? No. Overloading increases overlap and shadowing, so some surfaces receive less UV exposure. Use the cabinet within its designed capacity and place knives according to the rack layout. Q4: How long should knives stay in a UV cabinet? There is no single exposure time that applies to every cabinet. The appropriate time depends on the UV source, the cabinet design and the manufacturer's operating instructions, so follow the instructions supplied for the specific model. Q5: What knife length should buyers confirm when choosing a UV knife cabinet? For the three Daily Sealing UV knife cabinets currently listed, the published maximum knife length is 385 mm. Buyers should confirm the limit of the model they choose, together with blade width, handle thickness and rack design, before ordering. Q6: What voltage do Daily Sealing's UV knife cabinets use? The product pages of the three currently listed models show 110V and 220V. Buyers should confirm the required voltage, frequency and plug configuration for their destination market before ordering. Q7: What should an importer or distributor ask before a volume order? Ask about unit and carton dimensions, net and gross weight, quantity per carton, palletization, container loading quantity, voltage options, spare parts and replacement lamps, manuals and labeling, OEM branding, warranty terms and export documents. Use the RFQ checklist in this guide to organize the request. Q8: Do UV knife cabinets meet food-safety regulations in my country? That depends on the specific model, the country and the authority or customer concerned, and cannot be assumed from the equipment type. Confirm the applicable requirements with your regulator or customer, and request the documents available for the exact model. Related Products & Resources → UV Knife Sterilizer Cabinets – Product Category → Lower-capacity knife cabinet (7 knives) → Reinforced-rack knife cabinet (7 knives) → Higher-capacity double-door cabinet (14 knives) → Contact us for an RFQ About This Article This article was prepared by the Daily Sealing System technical team for importers, distributors, restaurant-equipment buyers, food processors and central-kitchen procurement teams evaluating commercial UV knife cabinets. Daily Sealing System Co., Ltd. is a Taiwan-based manufacturer with in-house manufacturing capability, serving international buyers with sealing equipment, vacuum packaging solutions, UV knife cabinets and OEM / ODM support. The company holds ISO 9001:2015 certification and has patents related to sealing equipment in Taiwan, the United States, Europe, Germany, Japan and China. These company-level credentials should not be read as certification of a particular UV knife cabinet; see the certificates page for what the company holds. The safety guidance in this article is general and draws on public information from the U.S. FDA and CDC/NIOSH, listed below. This article is general buying guidance. UV wavelength, exposure conditions, microbial-reduction performance, regulatory suitability, minimum order quantities, lead times and documentation depend on the specific model and a formal quotation, and should be confirmed against the actual product specification and supplier documents. External References CDC / NIOSH: Germicidal UV (GUV) information U.S. FDA: Ultraviolet (UV) Radiation Planning a Distributor or Volume Order of UV Knife Cabinets? Send us your destination market, knife quantity and dimensions, preferred capacity, voltage and frequency, estimated order volume and any OEM requirements. Our technical team can help you match the cabinet to your application before you request a quotation. View UV Knife Cabinets Contact Our Technical Team // //

FAQs (Frequently Asked Questions) about vacuum packaging Vacuum packaging is currently a trend, and recently, many users have purchased vacuum sealers or vacuum bags, generating a lot of questions. Here are answers to the most commonly asked questions: 1.     Which vacuum sealer is suitable for me? A: There are many vacuum sealers on the market, and it is not easy to choose a suitable vacuum sealer. I have previously written about "How to Choose a Vacuum Sealer". Those with questions can refer to it for getting more information. "How to choose a vacuum sealing machine", please check the following website address. *Nozzle type vacuum sealer: https://www.dailysealing.com/news_detail.aspx?seq=1116 *Non-nozzle type vacuum sealer: https://www.dailysealing.com/news_detail.aspx?seq=1115 *Chamber vacuum sealer: https://www.dailysealing.com/news_detail.aspx?seq=1114   2.     Why can't I use PE bags for vacuum packaging? A: Due to the density of the bag material. Even after air is removed and sealed, air can still seep back into the bag. Therefore, after packaging, if left alone for a period of time, the vacuum effect will be lost.   3.     What type of bag material is suitable for vacuum packaging? A: The most common vacuum bag materials are nylon (NY) bags and aluminum foil bags. Both of these materials can prevent air from seeping back into the bag and maintain a vacuum state inside the bag.   4.     Why can't I maintain a vacuum effect even after using vacuum bags? A: If you have confirmed that you are using vacuum bags, you can first check if the seal is defective. Some vacuum bags are too thick and require a longer sealing time, such as foldable bags (tea bags), which have four layers. If the seal is confirmed to be perfect, check if there are any holes in the vacuum bag. When vacuuming, the bag will adhere closely to the contents. If the contents have sharp edges, it is possible to puncture the bag and lose the vacuum effect.   5.     Many users who have bought vacuum sealers or vacuum bags are confused when they find that they can't remove the air from flat vacuum bags. What should they do? A: This is because they have purchased a vacuum sealer without a nozzle. The non-nozzle type vacuum sealers have to use the special vacuum bags (channel bags, embossed bags and gusset bags) to remove air, so if users use flat vacuum bags, they will find the vacuum sealer and vacuum bag can't work.     6.     If someone accidentally purchases a non-nozzle vacuum sealer (such as FOODSAVER), what types of vacuum bags can they use? A: The following types of vacuum bags can be used: (1)    Vacuum sealer embossed bags (vacuum channel sealer bags): vacuum bags with straight stripes. (2)    Fold-over bags: such as tea bags with two sides folded in to become a four-layer bag. (3)    Back-sealed bags: vacuum bags with one side flat and the other side with an additional spine. Remember to choose aluminum foil bags and nylon bags as the material for vacuum bags.   7.     What is the difference between a vacuum flat bag and a vacuum striped channel sealer bag? A: A vacuum flat bag is like a regular plastic bag with both sides being flat are smooth, but the material of a vacuum flat bag is made of nylon (NY) or aluminum foil. A vacuum channel sealer bag has one flat smooth side and the other side has straight stripes.   8.     Why can a vacuum channel sealer bag be used with a Non-nozzle vacuum sealer? A: The key is in the straight stripes of the vacuum channel bag. The structure of a Non-nozzle vacuum sealer requires a straight stripe to create a channel for the air inside the bag to be removed. If the stripes are too shallow, it may still be unable to vacuum out the air.