Professional Pedal switch controlled constant heat sealer Manufacturer

In recent years, vacuum packaging has become very popular. Vacuum packaging keeps damp proof, extended shelf life, and reduced storage space. There are various types of vacuum sealing machines available on the market. How to find a suitable vacuum sealer for your product? The following are specially divided into three categories for the vacuum sealers sold on the market (Chamber Vacuum Sealer, Non-nozzle Vacuum Sealer, and Nozzle Vacuum Sealer) to introduce advantages and disadvantages. There are other places to pay attention to when buying, hope to help everyone buy a suitable vacuum sealer, and enhance the quality of product.   ※Chamber Vacuum Sealer This is the most familiar and most commonly seen vacuum sealer. As the name suggests, it looks like a box. Therefore, large size and heavy weight are the biggest drawbacks of this vacuum sealer, but the vacuum degree is the best compared to the other two types of vacuum sealers. We also call this vacuum sealer an internal vacuum sealer. Because the items which you want to vacuum have to be put into the vacuum chamber in the vacuum sealer, and can be vacuum packaged. Since the vacuum item needs to be put into the vacuum chamber, the product will be limited by the size of the vacuum chamber. If the product is larger, the vacuum chamber must be larger. As the size of the vacuum sealer increases, its price also tends to increase. Therefore, when purchasing, it needs to consider whether the internal size of the vacuum chamber is suitable for your needs. The chamber vacuum sealer is further divided into oil-less and oil-type vacuum sealer due to the different types of vacuum pumps installed inside the machine. The vacuum capability of oil-less type vacuum sealers is slightly lower than that of oil-type vacuum sealers. Oil-less type vacuum sealer is suitable for dry products, such as tea, dried fruit, rice, and electronic parts. The price of this vacuum sealer is lower than that of the oil-type vacuum sealer, but the vacuum capability is sufficient for dry vacuum packaging. Oil-type vacuum sealer is suitable for both dry and moist products. If there is liquid in the product, it's recommended to choose an oil-type vacuum sealer. Suitable for packing products: meat, seafood, liquid, and powder. The Oil-type vacuum pumps installed in the Oil-type vacuum sealers on the market have different vacuum capabilities. If you need vacuum packaging for seafood or meat products, it's recommended to choose an Oil-type vacuum sealer with better vacuum capability. If the product itself is soft, even after being vacuumed, it will still be soft to the touch, and will not be as hard as dry products after being vacuumed. The price of Oil-type vacuum sealers is higher than that of oil-less-type vacuum sealers, and the higher the required vacuum capability, the higher the price. Also, it should be noted, Oil-type vacuum pump needs to add vacuum oil, so when using an Oil-type vacuum sealer, it's a must to regularly check the amount of vacuum oil and the clarity of the vacuum oil. If the oil level is below the standard, vacuum oil needs to be added; if the vacuum oil is cloudy, the old oil must be drained before adding new vacuum oil. The more often the vacuum sealer is used; the frequency of adding and draining oil is also higher. When the vacuum degree drops, you can first check whether it is due to the vacuum oil. Some oil-type vacuum sealers will also be equipped with oil mist catchers, to capture the oil mist generated during the operation of the oil-type vacuum pump. Smoke generation was found during the operation of the vacuum sealer, oil mist is likely generated when the oil vacuum pump is running, which is a normal phenomenon. The installation of an oil mist catcher is to reduce the situation of oil mist drifting. The oil mist catcher is a consumable, and the frequency of use will affect its life.   When purchasing a vacuum sealer, factors to consider include price, the suitable types of vacuum bags, vacuum efficiency, the size and type of products to be sealed, and the operating method. No matter what kind of product you want to vacuum, it's recommended to bring the product to the site for testing before purchasing, test the vacuum effect and understand how to operate it, this will allow you to choose the most suitable vacuum sealer for your needs.

Do Different Packaging Materials Require Different Sealing Temperatures? Heat Sealing Temperature Guide When switching from one packaging material to another, many production teams continue using the same heat sealer settings. This often results in weak seals, burnt seal lines, pouch deformation, leakage, or inconsistent seal quality. Based on Daily Sealing System's practical experience in sealing machine manufacturing and after-sales technical support since 2010, different packaging materials, sealant layers and material thicknesses require different heat sealing conditions. Selecting the correct sealing temperature is therefore one of the first steps toward achieving reliable and repeatable seal quality in a B2B packaging operation. A setting that is too low may result in insufficient bonding, while excessive heat can distort the pouch and accelerate wear on sealing-machine consumables. Quick Answer: Key Principles for Heat Sealing Temperature Settings Different packaging materials require different heat sealing conditions. Material structure and sealant-layer composition are as important as total pouch thickness. Always re-test sealing settings when changing pouch material, supplier, structure or thickness. A temperature that is too low may cause weak or incomplete seals. Excessive temperature may burn, distort or melt the packaging material and accelerate consumable wear. For production validation, start from the machine or material supplier's recommended range and adjust incrementally using sample pouches. Temperature is only one variable — dwell time, pressure, sealing width and conveyor speed can also affect final seal quality. 1. Why Do Different Packaging Materials Require Different Sealing Temperatures? A heat sealer applies thermal energy to the sealant layer of a pouch or bag. The two inner surfaces soften and bond under controlled heat and pressure, then form a seal as the material cools. Different pouch structures use different sealant materials, thicknesses and laminated layers. This means that the same machine setting may produce a strong seal on one material but an incomplete or burnt seal on another. When Sealing Temperature Is Too Low Sealant layers do not fully bond Seal line appears closed but opens under light pressure Vacuum bags may lose vacuum after sealing Thicker laminated pouches may seal inconsistently Parts of the seal line may remain unfused When Sealing Temperature Is Too High Seal line becomes burnt or discolored Pouch material melts through at the sealing area Seal edges become wrinkled or distorted Thin PE or heat-sealable OPP structures are particularly sensitive Heating elements and PTFE tape may wear faster 2. Reference Heat Sealing Temperature Ranges by Packaging Material The following ranges are intended as starting references for process testing, not universal production specifications. Actual settings can vary depending on pouch supplier, sealant-layer composition, total material thickness, machine design, sealing pressure, dwell time and production speed. For procurement and production teams, the safest approach is to confirm the material specification with the pouch supplier and then perform a sample sealing test on the actual machine before mass production. Packaging MaterialStarting Temperature Reference*Typical ApplicationsPurchasing / Production Notes Thin PE Bags Approx. 120–160°C Snacks, dry products, general lightweight packaging Relatively heat-sensitive. Start conservatively and verify actual material specifications before production. Heat-Sealable OPP / OPP Laminates Approx. 120–160°C Stationery, lightweight goods, food and retail packaging Confirm that the structure includes a heat-sealable layer. Pure OPP film structures may require different converting or sealing conditions. NY/PE Laminated Vacuum Bags Approx. 170–200°C Meat, seafood, agricultural products, vacuum packaging Settings depend strongly on laminate thickness, sealant layer and vacuum-sealer design. Confirm seal width and machine compatibility. PET/PE Laminated Pouches Approx. 170–200°C Food packaging, industrial components, general laminated packaging The PET outer layer provides heat resistance while the inner PE-based sealant layer forms the bond. Process settings must deliver sufficient heat to the sealant layer without damaging the laminate. Aluminum Foil / Foil-Laminated Pouches Approx. 180–220°C Coffee, tea, pharmaceutical packaging, moisture-sensitive industrial products Thicker foil laminates commonly require an adjustable-temperature constant heat sealer. Confirm pouch structure, sealant layer and equipment compatibility before purchase. Thick Multi-Layer Laminated Pouches May require 200°C or above depending on structure Heavy industrial products, agricultural bulk packaging, specialty packaging Do not increase temperature alone. Dwell time, sealing pressure, sealing width and heating method should be evaluated together. Important: The temperature ranges above are starting references only. Packaging films with the same generic material name can use different resin grades, sealant layers and laminate structures. Whenever the pouch material, supplier, thickness or structure changes, run a new sealing test before starting production. 3. How to Determine the Correct Heat Sealing Temperature There is no single sealing temperature that works for every material and every heat sealer. For B2B production, the correct approach is to establish a controlled test procedure and document the validated setting for each packaging material. 01 Identify the Material Confirm pouch structure, sealant layer and thickness — for example PE, NY/PE, PET/PE or foil laminate. 02 Set a Starting Point Use the machine manufacturer's or packaging-material supplier's recommended range as the starting point. 03 Run Sample Seals Use production-equivalent sample pouches and inspect seal appearance, continuity and initial seal strength. 04 Adjust Incrementally Increase heat gradually if the seal is weak. Reduce the setting if the pouch burns, distorts or melts. 05 Document the Setting Record pouch supplier, material structure, thickness, machine model, temperature and other relevant process settings. 4. How Can You Verify Whether the Seal Is Strong Enough? Temperature setting alone does not confirm seal quality. After establishing an initial setting, the production team should verify the actual seal according to the packaging requirements and internal quality-control criteria. Practical Seal Quality Checks: Visual Inspection: The seal line should be continuous and even, without burn marks, excessive wrinkles, holes or obvious unfused sections. Manual Pull Check: Apply even force to both sides of the sealed area. A properly bonded seal should not peel open easily under normal handling conditions. Vacuum Hold Observation: For vacuum packaging, monitor the package over a defined internal QC period to check for loss of vacuum, leakage or package rebound. A 24-hour observation may be used as an internal screening step, but it is not a universal industry standard. Production QC Testing: For applications with defined seal-integrity requirements, consider peel-strength, leak, burst or vacuum-decay testing according to your internal quality specification. Cross-Section Review: For troubleshooting, inspect the seal area for uniform fusion and signs of delamination. 5. Six Common Heat Sealing Temperature Mistakes 1. Changing Pouch Material Without Re-Testing Even materials with the same generic name can use different resin grades, thicknesses and sealant layers. Re-test whenever the pouch supplier or specification changes. 2. Assuming Higher Temperature Means a Stronger Seal Excessive heat can damage the pouch, distort the seal area and accelerate wear on heating elements and PTFE tape. 3. Ignoring Heat Build-Up During High-Volume Production During extended production runs, equipment temperature and process conditions may change. Periodically inspect seal quality instead of assuming the first validated setting remains optimal throughout the shift. 4. Looking Only at Material Thickness Thickness matters, but laminate structure, sealant layer, dwell time, sealing pressure and heating method can be equally important. 5. Sealing Through Oil, Moisture or Powder Contamination at the bag opening can prevent proper bonding even when the temperature setting is correct. Keep the sealing area clean and dry before sealing. 6. Using the Wrong Heating Method for Thick Foil Laminates Some thick multi-layer foil pouches require stable, adjustable heat that a standard impulse sealer may not provide. Confirm the pouch sealant structure and machine capability, and evaluate an adjustable-temperature constant heat sealer when required. 6. How Sealing Settings Differ by Machine Type Not every sealing machine controls heat in the same way. For purchasing teams, understanding the difference between time-controlled impulse sealing and temperature-controlled constant heat sealing is especially important. Sealing Machine TypePrimary Setting MethodB2B Purchasing / Production Notes Hand Impulse Sealer Sealing time / heating-time control rather than direct temperature setting Commonly used for PE and other compatible plastic bags. Material compatibility should be confirmed before purchasing. Foot Impulse Sealer Heating-time control Suitable for repetitive manual packaging where hands-free operation improves workflow. High-frequency use requires monitoring of seal consistency. Constant Heat Sealer Direct adjustable temperature control Often preferred for foil laminates, vacuum nylon bags and other thicker or multi-layer packaging materials requiring stable continuous heat. Continuous Band Sealer Temperature setting + conveyor speed Designed for higher-volume production. Temperature and line speed must be optimized together to maintain consistent heat input. Vacuum Sealer Sealing time or temperature depending on machine design Vacuum extraction and sealing are separate process stages. Confirm bag type, sealing method, seal width and production requirements before equipment selection. 7. Continuous Band Sealer: Why Temperature and Conveyor Speed Must Be Adjusted Together For a continuous band sealer, seal quality is determined by the combined effect of temperature, conveyor speed and material characteristics. Higher conveyor speed → shorter exposure time in the heating zone → process settings may need adjustment to maintain sufficient heat input. Lower conveyor speed → longer heat exposure → excessive temperature may distort or burn the pouch. Whenever pouch structure, thickness or conveyor speed changes, re-test the sealing conditions. Use sample material before a full production run and confirm that the seal line is continuous, undamaged and sufficiently strong for the intended application. B2B Buyer Checklist: Information to Prepare Before Selecting a Heat Sealer Packaging material structure: PE, OPP laminate, NY/PE, PET/PE, foil laminate, etc. Total pouch thickness and sealant-layer specification Bag opening width and required sealing length Required sealing width or number of seal lines Product type: dry, oily, powder, liquid, food, industrial component or medical product Daily production volume and required cycle speed Current sealing temperature, time or conveyor-speed settings Required seal-integrity or internal QC criteria Available power supply and production-line configuration Daily Sealing System Can Help Evaluate the Right Sealing Conditions for Your Packaging Material Daily Sealing System Co., Ltd. is a Taiwan-based sealing machine manufacturer with an in-house production facility. Our product range includes impulse sealers, constant heat sealers, foot sealers, continuous band sealers, vacuum sealers, medical pouch sealers and customized sealing equipment. For a new packaging project, buyers can provide the machine model, pouch structure, material thickness, bag dimensions, product type and daily output requirement so our technical team can help evaluate the appropriate sealing-machine configuration and starting process settings. The following questions are based on common sealing-temperature and packaging-material inquiries handled by Daily Sealing System's technical and after-sales service team across food processing, agricultural packaging, electronics manufacturing and industrial packaging applications. Frequently Asked Questions Q1: Do different packaging materials require different sealing temperatures? Yes. Different packaging films use different sealant layers, resin structures and thicknesses, so the same temperature setting may produce a weak seal on one material and burn another. Whenever the material, supplier, laminate structure or thickness changes, the sealing conditions should be re-tested before production. Q2: Does a higher sealing temperature always produce a stronger seal? No. The goal is to apply enough thermal energy to create a reliable bond without damaging the pouch. Excessive heat can distort the seal area, melt through the bag, weaken the laminate structure and accelerate wear on sealing-machine consumables. Q3: What type of sealer is recommended for aluminum foil or laminated foil pouches? Thick multi-layer foil laminates often require stable, adjustable heat so that sufficient thermal energy reaches the inner sealant layer. An adjustable-temperature constant heat sealer is commonly evaluated for these applications. However, machine selection should be based on the actual pouch structure, thickness, sealing width and production requirements rather than material name alone. Q4: How should I adjust the temperature of a continuous band sealer? Continuous band sealing depends on both temperature and conveyor speed. Increasing line speed reduces the time the pouch remains in the heating zone, while slower speed increases heat exposure. Whenever the material or production speed changes, test both parameters together and confirm seal quality before full production. Q5: How do I know whether my heat sealing temperature is correct? Start with a visual inspection: the seal line should be continuous and free from burns, holes and obvious unfused sections. Then perform an appropriate strength or leak check for the packaging application. For vacuum packaging, monitor whether the package maintains vacuum over your defined QC observation period. Once the process is validated, record the material specification, machine model and sealing settings for repeat production. Further Reading Related technical guides for sealing-machine buyers, production managers and packaging engineers: → Heat Sealer Not Sealing Properly? 5 Common Causes & Fixes → Sealing Machine Maintenance Guide: How Often Should You Service Your Equipment? → How to Choose the Right Sealing Length and Sealing Width → Sealing Machine Buying Guide: How to Choose the Right Sealer → When Should You Use a Continuous Band Sealer? About This Article This article was prepared by the Daily Sealing System technical team for purchasing teams, packaging engineers, production managers and industrial packaging users. Daily Sealing System Co., Ltd. is a Taiwan-based sealing machine manufacturer with an in-house production facility. Our product portfolio includes vacuum sealers, external vacuum sealers, chamber vacuum sealers, impulse sealers, constant heat sealers, foot sealers, continuous band sealers, medical pouch sealers and customized sealing equipment. The company holds ISO 9001:2015 certification. Certain products and related packaging materials carry CE, FDA, EU No.10/2011 and BPA Free certifications. Patents are registered in Taiwan, the United States, Europe, Germany, Japan and China. The content in this guide is based on Daily Sealing System's practical manufacturing experience, packaging-material testing and after-sales technical support since 2010. The temperature ranges provided are starting references only; actual production settings should always be validated using the specific pouch material and machine configuration. Need Help Matching Your Packaging Material to the Right Heat Sealer? Send us your pouch material, thickness, bag size, product type, required daily output and current sealing-machine model. Our technical team can help you evaluate the appropriate sealing-machine configuration and starting process settings for your packaging application. View All Sealing Machines Contact Our Technical Team // //

In recent years, vacuum packaging has become very popular. Vacuum packaging keeps damp proof, extended shelf life, and reduced storage space. There are various types of vacuum sealing machines available on the market. How to find a suitable vacuum sealer for your product? The following are specially divided into three categories for the vacuum sealers sold on the market (Chamber Vacuum Sealer, Non-nozzle Vacuum Sealer, and Nozzle Vacuum Sealer) to introduce advantages and disadvantages. There are other places to pay attention to when buying, hope to help everyone buy a suitable vacuum sealer, and enhance the quality of product.   ※Non-nozzle Vacuum Sealer         A non-nozzle vacuum sealer is a new type of vacuum sealer that has appeared in recent years, in terms of price, it's cheaper than the Chamber vacuum sealer, although the vacuum degree is lower than that of the Chamber vacuum sealer, for many products it is sufficient. This Non-nozzle vacuum sealer is equipped with an oil-less pump, so if the product itself has a lot of water (such as soup) or powder, a Non-nozzle vacuum sealer is not recommended, because moisture or powder will be drawn into the machine with the operation of the vacuum pump, easily cause damage to internal parts.         Non-nozzle vacuum sealer belongs to the external vacuum sealer, different from an internal vacuum sealers, the product is vacuumed outside the machine. Therefore, the product is not limited by the size of the vacuum chamber, unlike the chamber vacuum sealer, as long as the width of vacuum bags is smaller than the size of the sealing line of the external vacuum sealer, unlimited length, but if the vacuum bag is too long, it is recommended to find an external vacuum sealer with strong vacuum capability.         This type of vacuum sealer on the market has a plastic casing and a stainless steel casing. Non-nozzle vacuum sealer with plastic housing is small in size, and cheap in price, but if it's vacuum packaged for a long time, high frequency of operation, it's not recommended by a Non-nozzle vacuum sealer with a plastic case, because the vacuum sealer will generate heat when sealing, use for a long time, the sealing seat with continue to heat, when the temperature is too high, the plastic case may be deformed. If just for household or small amounts of use, a Non-nozzle vacuum sealer can be purchased in a plastic case.   It's a factory or a long-term operator, it's recommended to purchase a Non-nozzle vacuum sealer with a stainless steel housing, in addition to not worrying about the deformation of the sealing seat due to high temperature, the vacuum pump installed inside is larger than the Non-nozzle vacuum sealer with plastic casing, continuous use is not afraid of failure, and the vacuuming ability is also strong. Compared with the Chamber vacuum sealer, Non-nozzle vacuum sealer is much smaller and easy to carry. Please pay attention to the vacuum bag. Non-nozzle vacuum sealers can't use vacuum flat bags, due to the machine structure, Non-nozzle vacuum sealers are available for vacuum embossed bags (vacuum stripe bags), nylon gusset vacuum bags, aluminum foil gusset bags, and back seal bags. The price of vacuum embossed bags and gusset bags are slightly higher than that of vacuum flat bags, so please pay the attention. If the product packaging itself is to use the gusset bag, such as tea leaves, rice, etc. A Non-nozzle vacuum sealer is highly recommended as the results are satisfactory. If you don't care about the price of vacuum bags and hope the price of the vacuum sealer is lower, a Non-nozzle vacuum sealer will be a good choice. When purchasing a vacuum sealer, factors to consider include price, the suitable types of vacuum bags, vacuum efficiency, the size and type of products to be sealed, and the operating method. No matter what kind of product you want to vacuum, it's recommended to bring the product to the site for testing before purchasing, test the vacuum effect and understand how to operate it, this will allow you to choose the most suitable vacuum sealer for your needs.