Hawo® HPL WSZ/WVM 400mm Constant Heat Sealer Tongs (250 C) Hand Heat Sealing Machine
Hawo® HPL WSZ/WVM 400mm Constant Heat Sealer Tongs (250 C) Hand Heat Sealing Machine
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The Hawo HPL WSZ/WVM 400 is a high-quality, portable heat sealer designed for professional use.....
It's a step up from standard heat sealers, offering superior performance and durability for demanding applications. This particular model boasts a 400mm sealing length, making it suitable for larger packages and higher volume operations.
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Please note Teflon® is registered Dupont IP.
- 400mm Seal Length: This extended sealing length allows you to efficiently seal wider bags and packages, increasing productivity. It's particularly beneficial for businesses dealing with larger items or higher throughput.
- Premium Build Quality: Hawo is known for its robust and reliable equipment. The WSZ/WVM 400 is built to withstand frequent use in demanding environments. Its ceramic sealing jaws ensure consistent and high-quality seals.
- Versatile Material Compatibility: This sealer handles a wide range of materials, including heat-sealable plastics, coated aluminium foil, coated paper, and coated cellophane. This makes it adaptable to various packaging needs. (Note: While it handles many materials, it's always best to confirm compatibility with your specific material before purchase.)
- Fast and Efficient Operation: With no required heat-up time, the WSZ/WVM 400 is ready to use immediately, maximising efficiency. This is a significant advantage in fast-paced environments.
- Optional Teflon Coating: The option for a Teflon-coated sealing surface is a valuable feature, especially when working with materials that tend to stick. The Teflon coating prevents adhesion, ensuring clean and consistent seals.
Ideal Applications: The 400mm seal length makes this model particularly well-suited for applications like:
- Sealing large industrial bags
- Packaging electronics with protective materials
- Creating secure medical device packaging
- Closing larger pouches or bags in food service or manufacturing
These heat sealer machines are premium devices for use on projects where seal quality needs to be ensured.
| ✔ PP | ✔ Thin Laminates |
| ✘ PE | ✔ Thick Laminates |
Delivery Time
- Mainland United Kingdom: 1-2 Working Days.
- European Union: 3 - 5 Working Days.
- United States: 3-5 Working Days.
- Rest of the World: 7 - 10 Working Days.
To view all our hand held heat sealer machines please click here.
Product Specifications (.PDF)
Frequently Asked Questions
• What exactly is the Hawo HPL WSZ/WVM 400mm Constant Heat Sealer Tongs and what's its main purpose?
The Hawo HPL WSZ/WVM 400mm is a professional-grade, hand-held heat sealing tool designed for consistently and precisely sealing various heat-sealable films and materials. Its primary purpose is to create strong, reliable, and uniform seals on a diverse range of packaging, particularly where portability and on-site sealing are essential.
• How does "constant heat technology" benefit the sealing process with these tongs?
The constant heat technology in these tongs means that the sealing bars maintain a consistent, pre-set temperature throughout the entire sealing process. This is crucial for ensuring a uniform seal every time, which helps prevent weak points in the packaging and significantly reduces the risk of seal failure, leading to more secure and durable packages.
• What's the significance of the 400mm sealing length for users?
The 400mm sealing length provides a generous working area, allowing users to efficiently seal wider bags and pouches. This extended length is particularly beneficial for businesses or applications dealing with larger items, higher volumes, or diverse packaging sizes, ultimately boosting productivity.
• Can you explain the temperature range capabilities of these tongs and why it's important?
These tongs offer a versatile temperature range, typically up to 250°C, which is incredibly important for adaptability. This wide range ensures that the tongs can optimally seal a broad spectrum of materials, from very delicate films to much thicker and more robust substrates, allowing for flexibility across different packaging requirements.
• What makes the construction of the Hawo HPL WSZ/WVM 400mm tongs robust and durable?
The tongs are built with high-quality, durable materials, designed to withstand frequent and demanding use in various industrial and commercial environments. This robust construction ensures a long lifespan for the tool, providing reliable performance and reducing the need for frequent replacements, which translates to lower operational costs over time.
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• Are these tongs designed for right-handed or left-handed users, or are they ambidextrous?
The ergonomic design of the Hawo HPL WSZ/WVM 400mm tongs is crafted for comfortable and secure gripping, aiming to minimize user fatigue during extended operation, making them suitable for both right-handed and left-handed users.
• What type of seal does the Hawo HPL WSZ/WVM 400mm create on materials?
The Hawo HPL WSZ/WVM 400mm creates a 12mm wide "ripped" or serrated seal. This type of seal provides excellent strength and integrity, ensuring the contents are securely enclosed and protected.
• How quickly do these tongs heat up before they are ready for use?
These constant heat tongs typically require an approximate pre-heating time of about 5 minutes before they reach their optimal operating temperature and are ready to create consistent seals.
• What power specifications do the Hawo HPL WSZ/WVM 400mm tongs operate on?
The Hawo HPL WSZ/WVM 400mm tongs operate on a 230V / 50Hz mains connection and have a power consumption of 350 VA.
• Is there an indicator to let me know when the tongs are at the correct sealing temperature?
While the direct product description may not explicitly mention an indicator light, professional constant heat sealers like the Hawo HPL WSZ/WVM models often have a temperature control system, and some may include an indicator to signal when the set temperature has been reached, ensuring optimal sealing.
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Application & Material Compatibility
• For what specific types of materials are the Hawo HPL WSZ/WVM 400mm tongs ideally suited?
These tongs are specifically designed for sealing a wide range of heat-sealable films and materials, including coated aluminum film, coated paper, painted cellophane, laminated foils, and other heavy-gauge, multi-layered laminated packaging materials.
• Can these tongs effectively seal thick foil packaging, like those used for coffee or industrial products?
Absolutely. The constant heat technology and adjustable temperature range of the Hawo HPL WSZ/WVM 400mm tongs make them highly effective for sealing thicker foil packaging, such as those commonly used for coffee or for protecting large industrial components and machinery, ensuring strong, tamper-proof seals.
• Are these tongs suitable for sealing ready-made pouches, and if so, what kind?
Yes, these tongs are highly suitable for sealing ready-made pouches, especially those constructed from coated papers, coated aluminum foils, and other laminated materials that require a robust, consistent seal, commonly found in various industries including food and industrial packaging.
• Could these tongs be used to create custom dust covers from aluminum composite films?
Indeed, the Hawo HPL WSZ/WVM 400mm tongs are well-suited for applications such as creating custom dust covers from aluminum composite films, providing reliable and secure seals for product protection.
• In what industries are these heat sealer tongs commonly utilized?
These heat sealer tongs find widespread use across various industries, including food processing for freshness and shelf-life, pharmaceuticals for sterility and protection, electronics for sensitive component packaging, medical for maintaining hygiene, and various industrial settings for protecting components and machinery.
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• Are the Hawo HPL WSZ/WVM 400mm tongs appropriate for packaging items requiring corrosion protection?
Yes, these tongs are highly appropriate for corrosion protection packaging, particularly when using suitable barrier films like coated aluminum or laminated foils, as they create a secure, airtight seal that helps shield contents from environmental factors.
• Can these tongs handle materials that tend to stick to standard sealing jaws?
The Hawo HPL WSZ/WVM 400mm tongs can come with an optional PTFE coating on the sealing rails, which is specifically designed to prevent materials from sticking, ensuring clean and consistent seals even with challenging films.
• Are these tongs suitable for sealing sensitive medical devices, ensuring sterility?
While the Hawo HPL WSZ/WVM 400mm provides robust seals, for critical medical device packaging requiring validated processes and compliance with stringent standards like EN ISO 11607-2, it's essential to ensure the specific model and sealing parameters meet those regulatory requirements. Hawo does offer validatable sealers for such applications.
• Can these tongs be used for creating packaging for office requirements or spare parts?
Yes, the versatility and strong sealing capability of the Hawo HPL WSZ/WVM 400mm tongs make them very suitable for creating packaging for a wide array of items, including office supplies and spare parts in various industries, ensuring they are well-protected.
• Is there a specific thickness of film or material that these tongs are best suited for, or can they handle a wide range?
These tongs are specifically designed for "heavy gauge, multi-layered laminate foils and coated papers," indicating their strength in handling thicker materials. However, their adjustable temperature allows for sealing a broad range of film thicknesses within that category.
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Usage & Practical Considerations
• How does one adjust the temperature setting on the Hawo HPL WSZ/WVM 400mm tongs for different materials?
The temperature of the sealing jaws can be precisely adjusted using a control knob, typically from 60°C up to 250°C. This adjustment should be done incrementally, often requiring a few trial seals on scrap material to find the optimal setting for a specific film type and thickness.
• What's the correct technique for inserting material into the tongs to ensure an excellent seal?
Before closing the tongs, you should insert the material smoothly and ensure there are no bumps or wrinkles. It's important to keep the material taut between the sealing beams as you close the tongs manually to help achieve a flat, strong, and consistent seal.
• After the seal is made, how long should the tongs remain closed for optimal seal stability?
After the sealing impulse or cycle is complete (often indicated by a sound), it is crucial to keep the tongs closed for an additional 2-5 seconds. This cooling period allows the seal to set and maintain its stability, preventing the material from melting or separating prematurely.
• What are the common signs that the welding time or temperature setting is either too short or too long?
If the seal is too weak and can be easily opened, it typically indicates that the welding time or temperature was too short. Conversely, if the seam appears scorched or burnt, it suggests the welding time or temperature was too long. Trial and error with small adjustments are key to finding the perfect setting.
• Can these tongs be used as a stationary table model, or are they strictly for handheld operation?
While primarily a handheld tool, an optionally available table clamp allows the Hawo HPL WSZ/WVM 400mm tongs to be securely mounted and used as a static table model, providing greater flexibility for different operational needs.
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• What are the recommended environmental conditions for using these heat sealing tongs?
These machines are intended for use only in normal and dry surroundings. It's crucial to protect them from humidity, dust, steam, and splashed water, as these elements can cause the machine to malfunction or become damaged.
• Are there any objects or materials that should absolutely not be placed between the sealing beams?
Yes, it is vital to avoid placing any hard objects between the sealing beams. Doing so can severely damage the heating ribbon as well as the PTFE glass tissue, which would compromise the integrity and density of the sealing seam at that specific spot.
• How do I properly clean the Hawo HPL WSZ/WVM 400mm tongs?
To clean the tongs, always disconnect them from the power outlet first. You should clean the machine only with a dry or slightly damp soft cloth and a mild cleaning agent. It's essential to prevent any water from finding its way into the internal components of the machine.
• What is the typical lifespan one can expect from the consumable parts, like the PTFE ribbon and heating ribbon?
The PTFE ribbon and heating ribbon are consumable parts that will wear down over time with regular use. Their exact lifespan can vary depending on usage frequency and material type, but regular inspection and replacement when signs of wear (like discoloration or breakage) appear are crucial for maintaining optimal sealing performance.
• Is there a recommended schedule for professional maintenance or servicing of these tongs?
For optimal performance and longevity, it's recommended to have professional maintenance performed on the device at least once a year. This service typically involves cleaning, replacing worn parts, and functionally testing the sealing system. Additionally, lubricating the holding support of the operation lever every three months is advised.
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