Exploring Plastic Welding Systems: Understanding the Process of Welding Plastic

Plastic welding systems have become indispensable in various industries, offering a reliable method for joining plastic components with strength and precision. Whether automotive manufacturing, electronics assembly, or plumbing, plastic welding is crucial in creating durable and seamless connections. This comprehensive guide delves into the intricacies of plastic welding, exploring the process, techniques, and applications of this versatile joining method.

Understanding Plastic Welding

Plastic welding is a process that involves melting and fusing two or more pieces of plastic to form a cohesive bond. Unlike traditional welding methods used with metals, plastic welding relies on the thermoplastic properties of plastic materials, which soften when heated and solidify upon cooling. The key to successful plastic welding lies in achieving the optimal temperature and pressure to ensure proper fusion without compromising the integrity of the materials.

The Plastic Welding Process

While specific techniques may vary depending on the type of plastic and the desired application, the basic steps of plastic welding typically include:

  • Surface Preparation: Before welding, it’s essential to clean and prepare the surfaces to be joined. This involves removing any contaminants, such as dirt, grease, or oxidation, that could interfere with the welding process.
  • Heating: Plastic welding systems employ various heating methods to raise the temperature of the plastic materials to their melting point. Common heating techniques include hot air, hot plate, infrared, and ultrasonic.
  • Joining: Once the plastic reaches the appropriate temperature, the heated surfaces are brought into contact, allowing them to meld together. Pressure may be applied to ensure proper fusion and eliminate voids or gaps in the weld.
  • Cooling: After the welding process is complete, the fused plastic is allowed to cool and solidify, forming a strong and durable bond. Proper cooling is essential to prevent premature failure of the weld.

Types of Plastic Welding Systems

Plastic welding systems encompass a range of techniques and technologies suited to different materials and applications. Some common methods include:

  • Hot Air Welding: Uses a stream of heated air to soften and fuse thermoplastic materials, commonly used for welding PVC (polyvinyl chloride), HDPE (high-density polyethylene), and PP (polypropylene).
  • Hot Plate Welding: This involves heating plastic components on a heated plate until they reach the desired temperature, then pressing them together to form a weld. Ideal for larger parts and complex geometries.
  • Ultrasonic Welding: Uses high-frequency ultrasonic vibrations to generate heat and create friction between plastic parts, resulting in rapid and precise welding. Particularly suitable for small, intricate components in electronics and medical devices.
  • Spin Welding: Rotates one plastic component against another at high speed while applying pressure, causing frictional heat to melt and fuse the materials. Commonly used for joining thermoplastics with circular or cylindrical geometries.

Plastic Welding Applications

Plastic welding finds applications across a wide range of industries, including:

  • Automotive: Welding plastic components in vehicle interiors, bumpers, and fuel tanks.
  • Construction: Joining plastic pipes, sheets, and fittings in plumbing, roofing, and signage.
  • Electronics: Assembling electronic enclosures, connectors, and housings with precision welding techniques.
  • Packaging: Creating sealed seams in plastic packaging materials for food, pharmaceuticals, and consumer goods

Contact M.E.E. for details

Plastic welding systems offer a versatile and efficient means of joining plastic components, providing strong and reliable bonds in multiple applications. By understanding the process of plastic welding and the various techniques available, manufacturers and fabricators can select the most suitable method for their specific needs, ensuring quality, durability, and efficiency in their production processes. As advancements in materials and technology continue to expand the capabilities of plastic welding systems, this essential joining method will remain at the forefront of modern manufacturing.

Contact us today for more information about our plastic welding systems.

Best practices for cleaning and maintaining brass HF connectors: Ensuring optimal performance and longevity

Brass HF connectors are essential components in various industries, including telecommunications, electronics, and radio frequency (RF) applications. These connectors are crucial in ensuring reliable signal transmission and connectivity in high-frequency (HF) environments. However, like any precision equipment, brass HF connectors require regular cleaning and maintenance to perform optimally and extend their lifespan. This guide explores the best practices for cleaning and maintaining brass HF connectors, providing insights into the importance of proper maintenance, common cleaning methods, and tips for maximising connector performance.

Understanding brass HF connectors

Brass HF connectors are commonly used in RF and microwave systems to interconnect coaxial cables, antennas, and other RF components. These connectors feature a brass body with threaded coupling mechanisms and inner contacts made of brass or other conductive materials. Brass is chosen for its excellent electrical conductivity, corrosion resistance, and durability, making it ideal for high-frequency applications where signal integrity is paramount.


Importance of cleaning and maintenance

Proper cleaning and maintenance of  HF connectors are essential for ensuring optimal electrical performance, signal integrity, and reliability. Over time, connectors can accumulate dirt, dust, oxidation, and other contaminants that can degrade signal quality and increase insertion loss. Additionally, corrosion and oxidation can occur on connector surfaces, leading to increased electrical resistance and poor conductivity. Regular cleaning and maintenance help prevent these issues, prolonging the lifespan of connectors and minimising the risk of signal degradation or equipment failure.

Best practices for cleaning brass HF connectors

  • Visual inspection: Before cleaning brass HF connectors, perform a visual inspection to assess the condition of the connectors and identify any signs of contamination, oxidation, or damage. Inspect the connector body, threads, inner contacts, and insulators for debris, discolouration, or irregularities.
  • Use compressed air: Start by using compressed air or a soft-bristled brush to remove loose dirt, dust, and debris from the connector surfaces. Ensure the air pressure is appropriate to avoid damaging delicate components or pushing contaminants further into the connector.
  • Cleaning solution: Prepare a mild cleaning solution using isopropyl alcohol (IPA) or a specialised connector cleaner recommended by brass HF connector suppliers. Apply the cleaning solution to a lint-free cloth or foam swab, and gently wipe the connector surfaces to remove grease, oils, fingerprints, and other residues.
  • Avoid abrasive materials: Avoid using abrasive materials or harsh chemicals that can scratch or damage the brass surfaces of the connectors. Abrasive cleaners, steel wool, and abrasive pads should be avoided to prevent surface damage and degradation of connector performance.
  • Rinse and dry: After cleaning the connectors, rinse them with clean water or a mild detergent solution to remove any remaining cleaning residue. Dry the connectors thoroughly using a lint-free cloth or compressed air to prevent water spots or corrosion.
  • Apply lubricant: For threaded connectors, apply a small amount of silicone-based lubricant or corrosion inhibitor to the threads to facilitate smooth mating and prevent galling or seizing. Be careful not to use too much lubricant, which can attract dust and debris.

Routine maintenance tips

  • Regular inspection: Perform routine visual inspections of brass HF connectors to check for signs of wear, corrosion, or damage. Inspect connector interfaces, contact pins, insulators, and gaskets for any abnormalities that may affect performance.
  • Tighten loose connections: Periodically check and tighten loose connector interfaces to ensure proper mating and optimal electrical conductivity. Use a torque wrench or tighten connectors to the manufacturer’s recommended torque specifications to prevent over-tightening and damage.
  • Store properly: Store brass HF connectors in a clean, dry environment away from moisture, dust, and corrosive gases. Use protective caps or covers to shield connector interfaces when not in use, and avoid exposing connectors to extreme temperatures or humidity levels.
  • Replace damaged connectors: If connectors show signs of significant wear, damage, or corrosion that cannot be addressed through cleaning or maintenance, consider replacing them with new connectors from reputable brass HF connector suppliers like M.E.E. Investing in high-quality connectors ensures reliable performance and longevity.

Contact M.E.E. for details

Proper cleaning and maintenance of brass HF connectors are essential for ensuring optimal performance, signal integrity, and longevity in high-frequency applications. By incorporating these practices into a maintenance regimen, businesses can safeguard their investment in critical infrastructure and maintain a competitive edge in today’s fast-paced, high-frequency environments.

Contact us today for more information about our brass HF connectors.

Applications of handheld ultrasonic welding guns: Revolutionising precision joining

Handheld ultrasonic welding guns have emerged as powerful tools in the field of precision joining, providing a versatile and efficient solution for a wide range of applications. These compact devices use ultrasonic vibrations to create strong, reliable bonds between materials without additional adhesives or fasteners. This article explores the diverse applications of handheld ultrasonic welding guns and how they are revolutionising the world of manufacturing and assembly.


Automotive industry

  • Plastic components assembly: Handheld ultrasonic welding guns find extensive use in the automotive industry for assembling plastic components such as interior panels, dashboard parts, and various trim elements. The precision and speed of ultrasonic welding contribute to efficient manufacturing processes.


  • Wire harness welding: Ensuring secure connections in wire harnesses is crucial for vehicle functionality. Handheld ultrasonic welding guns provide a reliable method for welding wires, creating durable and vibration-resistant joints in automotive electrical systems.

Electronics and consumer goods

  • Battery pack assembly: In the electronics industry, particularly in producing battery packs for devices like laptops and power tools, handheld ultrasonic welding guns are employed to join plastic components securely. This application ensures the integrity and safety of the battery enclosure.


  • Consumer electronics casing: Handheld ultrasonic welding guns offer an ideal solution for assembling casings and enclosures in consumer electronics such as smartphones, tablets, and wearable devices. The precision of ultrasonic welding ensures a seamless and aesthetically pleasing finish.

Medical device manufacturing

  • Disposable medical device assembly: The medical industry benefits from the sterile and precise nature of ultrasonic welding in the assembly of disposable medical devices. Handheld ultrasonic welding guns are used to create leak-proof seals in components like blood filters, drug delivery devices, and diagnostic test kits.


  • Surgical instrument production: Surgical instruments require impeccable precision and cleanliness. Handheld ultrasonic welding guns contribute to the assembly of components in surgical tools, providing a secure bond without compromising the integrity of the instruments.

Textile and packaging

  • Non-woven fabric sealing: Handheld ultrasonic welding guns are crucial in sealing and bonding non-woven fabrics in the textile industry. Applications include the production of medical gowns, filters, and various disposable products.


  • Packaging industry: In the packaging sector, ultrasonic welding is used for sealing and joining packaging materials, creating tamper-proof seals, and ensuring the integrity of the contents. Handheld devices offer flexibility in applications where automation may not be suitable.

Advantages of handheld ultrasonic welding guns

  • Precision and consistency: Handheld ultrasonic welding guns provide unparalleled precision in joining materials. The controlled application of ultrasonic vibrations ensures consistent and repeatable welds, contributing to high-quality manufacturing processes.


  • Fast and efficient: The speed at which handheld ultrasonic welding guns operate enhances production efficiency. With quick cycle times, these devices contribute to streamlined manufacturing workflows, reducing overall production costs.


  • Environmentally friendly: Ultrasonic welding eliminates the need for adhesives or additional consumables, making it an environmentally friendly joining method. This feature aligns with the growing emphasis on sustainable manufacturing practices.

Contact M.E.E. for details

Contact us today for more information about our handheld ultrasonic welding guns.

Enhancing precision in specialised welding: The role of VE 35 and VE 20 actuators

In specialised welding, precision is paramount. Industries like automotive manufacturing demand welding solutions that ensure the strength and longevity of welds and enhance productivity and cost-effectiveness. In this pursuit of excellence, M.E.E. is a trusted supplier of specialised welding equipment and utilities, offering various solutions that combine reliability, longevity, accuracy, and cost-effectiveness. Among pir offerings, VE 35 and VE 20 actuators have emerged as indispensable tools, especially tailored to meet the demands of high-precision welding tasks, particularly in the automotive industry.

M.E.E’s commitment to excellence

We have long been at the forefront of providing cutting-edge welding solutions to a diverse clientele. Our commitment to delivering reliability, longevity, accuracy, and cost-effectiveness in equal measure has made us a preferred partner for businesses looking to elevate their welding operations. Our proficiency and extensive product range ensure comprehensive coverage for tasks involving automotive components, aerospace structures, and intricate assemblies.

Type VE 35 actuators: Power and precision combined

The VE 35 actuator is a true workhorse for specialised welding applications. Designed with the utmost precision and robustness in mind, it boasts a range of features that make it an ideal choice for demanding welding tasks.

· Powerful performance: The VE 35 actuator delivers impressive power and force, making it suitable for multiple welding applications, from structural welding in the automotive industry to intricate work on aerospace components.

· Precision control: Precision is the hallmark of this actuator. It offers exceptional accuracy and repeatability, always ensuring consistent and reliable welds.

· Longevity: Built to withstand the rigours of industrial use, the VE 35 actuator is engineered for longevity. It’s designed to endure heavy workloads and provide years of dependable service.

· Cost-effective: While it’s a high-performance piece of equipment, the VE 35 actuator is also cost-effective, offering a balance between performance and affordability that’s hard to beat.

Type VE 20 Actuators: Excellence in Compact Form

For applications where space is a premium but precision cannot be compromised, the VE 20 actuator shines. his compact yet potent actuator has been specifically designed for welding operations that require a high degree of precision and agility.

Compact design: The VE 20 actuator’s compact design allows it to be easily integrated into tight spaces and complex welding setups, making it an excellent choice for applications with spatial constraints.

High-speed operation: Despite its size, the VE 20 actuator doesn’t compromise on speed or power. It excels in delivering rapid and precise welding operations.

Accuracy and consistency: Like its larger counterpart, the VE 20 actuator offers exceptional accuracy and consistency, ensuring that welds meet the most stringent quality standards.

Cost-efficiency: The VE 20 actuator is a cost-effective solution for specialised welding needs by maximising space use and energy efficiency.

Contact M.E.E. for details

Contact us today for more information about our VE 35 and VE 20 actuators.

Unlocking Precision And Efficiency With Handheld Ultrasonic Welding Guns

In today’s fast-paced manufacturing world, precision, speed, and efficiency are key factors determining the success of a production process. Handheld ultrasonic welding guns are one cutting-edge technology that has revolutionised how plastic components are joined together. With their advanced features and unmatched versatility, these powerful tools have become indispensable for manufacturers across various industries.

As a leading company in the field of industrial equipment, M.E.E is at the forefront of providing cutting-edge solutions to its customers. Handheld ultrasonic welding guns are one such innovation. So let’s dive deeper into the benefits of these incredible tools.

What Is A Handheld Ultrasonic Welding Gun

First, handheld ultrasonic welding guns offer unparalleled precision. They use high-frequency ultrasonic vibrations to generate heat-melting plastic components, which are then fused to create a strong, durable bond. Achieve precise control, tight tolerances, and minimal part distortion with our exceptional welding process. This precise and controlled process ensures consistent results, eliminating the need for rework or costly rejects and saving time and money in the long run.

In addition to precision, handheld ultrasonic welding guns excel in speed and efficiency. Unlike traditional welding methods requiring time-consuming setup, such as preheating or cooling, ultrasonic welding guns can rapidly weld parts together in seconds. This significantly increases productivity, allowing manufacturers to meet tight production deadlines and scale their operations.


Furthermore, these handheld ultrasonic welding guns offer versatility in the types of materials that can be welded. They can join a wide range of thermoplastic materials, including but not limited to ABS, PVC, PET, PP, and PE. This flexibility makes them ideal for various applications, such as automotive, aerospace, medical devices, consumer goods, and electronics.

Another notable advantage of handheld ultrasonic welding guns is their ergonomic design and ease of use. They are lightweight, portable, and designed with user-friendly interfaces, making them comfortable and convenient. Operators can easily adjust welding parameters, such as amplitude, time, and pressure, to achieve optimal results. Safety features in the guns include built-in sensors that detect anomalies during welding, prioritizing operator safety and component protection.

Finally, handheld ultrasonic welding guns contribute to environmental sustainability. Unlike traditional welding methods requiring adhesives, solvents, or other consumables, ultrasonic welding is solvent-free, clean, and energy-efficient. It produces no harmful fumes or by-products, making it environmentally friendly and compliant with stringent regulations.

Contact M.E.E. For Details

Contact us today for more information about handheld ultrasonic welding guns.

The Zinzer Hot Air Gun: The Ultimate Solution For Industrial Heating Needs

When it comes to industrial heating, precision, efficiency, and reliability are of the utmost importance. That’s why M.E.E. offers the Zinzer hot air gun, a cutting-edge solution that meets all these requirements. It’s advanced technology and robust construction makes it the ultimate tool for heating applications in multiple industries.

The Zinzer Hot Air Gun Has Unmatched Precision

The Zinzer hot air gun is designed to provide precise and controlled heating for various materials. Whether you need to heat plastics, metals, or composites, the hot air gun delivers accurate temperature control with its digital display and adjustable settings. This allows for precise heating, ensuring consistent results and minimising the risk of overheating or damaging the material. The gun’s ergonomic design also provides easy handling, allowing operators to work comfortably for extended periods without fatigue.

Efficient Performance

The hot air gun is powered by a high-performance motor providing a powerful and consistent flow of hot air. This ensures efficient heating, reducing the time required to heat materials and increasing productivity. In addition, it features a quick warm-up time, allowing operators to start working quickly without delays. Furthermore, the hot air gun is designed to minimise energy consumption, making it a cost-effective solution for long-term use.

Reliable And Durable

Built to last, hot air gun is made from high-quality materials and features a rugged construction that can withstand harsh industrial environments. Its durable design ensures reliable performance even in demanding conditions, making it suitable for heavy-duty applications. The gun also has safety features such as overheat protection and a cool-down mode, ensuring safe operation and protecting the user from potential hazards.

Versatile Applications

The Zinzer hot air gun is a versatile tool used in various applications across different industries. From automotive and aerospace to construction and plastics, it can easily handle multiple heating tasks. Therefore, it can be used for welding, shrinking, drying, and forming tasks, making it an indispensable tool for professionals in different fields.

Unparalleled Support

M.E.E is committed to providing excellent customer service and support, and the Zinzer gun is backed by comprehensive technical support and warranty. Our experts are always ready to assist with any questions or concerns, ensuring you maximise your investment.

Contact M.E.E. For Details

Contact us today for more information on the Zinzer hot air gun.

Enhancing Precision And Efficiency With Plastic Joining Equipment In Johannesburg

Plastic joining, also known as plastic welding, is a critical process in various industries, including automotive, aerospace, packaging, and electronics. It involves fusing two or more plastic components to create a strong and durable bond. To achieve precise and efficient plastic joining, state-of-the-art equipment is essential. In Johannesburg, M.E.E has emerged as a trusted provider of high-quality plastic joining equipment, delivering cutting-edge solutions to meet the needs of diverse industries.

With a strong reputation for excellence, we’re a leading supplier of plastic joining equipment in Johannesburg. We offer various advanced plastic welding machines and accessories designed to deliver superior performance and reliability. Our product portfolio includes technologies like ultrasonic welding, hot plate welding, vibration welding, and laser welding. These technologies cater to various types of plastics, including thermoplastics, thermoset plastics, and composites, making them suitable for diverse applications.

Advantages Of Using Plastic Joining Equipment From M.E.E

One of the key advantages of using plastic joining equipment from M.E.E is the precision and accuracy offered. Our advanced equipment is engineered to deliver tight tolerances and consistent results, ensuring plastic components are joined with utmost accuracy. This is crucial in industries where the final product’s quality and reliability are paramount. Whether it’s automotive parts, medical devices, or electronic components, our plastic joining equipment guarantees precise and reliable bonding, enhancing the overall performance and durability of the final product.

Efficiency is another critical factor that sets our plastic joining equipment apart. Our state-of-the-art machines are designed to optimise the welding process, reducing cycle times and increasing productivity. Our plastic joining equipment enables seamless and efficient operations with features like automated controls, intuitive interfaces, and advanced monitoring systems. This saves time and minimises waste and rework, contributing to cost savings and improved business profitability.

Our commitment to customer satisfaction is evident in our exceptional customer service and technical support. Our experts provide comprehensive guidance and assistance in selecting the right plastic joining equipment based on each customer’s specific requirements. Additionally, we offer training and after-sales support, ensuring customers can operate the equipment effectively and achieve optimal results. Our customer-centric approach has earned us a loyal customer base in Johannesburg and beyond.

In addition to our cutting-edge plastic joining equipment, we emphasise sustainability. We recognise the importance of environmentally responsible practices and offer solutions promoting sustainability, such as energy-efficient equipment and processes minimising the environmental impact of plastic joining operations.

Contact M.E.E. For Details

If you need plastic joining equipment in Johannesburg, look no further than M.E.E. Contact us today for more information

Hot Air Gun 101

Hot air guns are flameless electric air guns used for various repair and construction tasks. They are useful portable or stationary tools. However, you cannot use hot air guns without proper techniques because of the high temperatures and safety concerns. As a result, it is critical to understand how a heat gun works.

Hot air gun applications

A hot air gun is a multipurpose electric tool that can be used for various tasks. It’s similar to a piece of standard essential equipment you can use for university projects, household repairs, and even tough jobs in your workshop and laboratory.

Hot air guns are primarily used to remove paint from various materials such as wood, metal, and glass. Compared to other electric tools, a heat gun will provide the highest precision when stripping paint. In addition, hot air guns are used in DIY electronic projects and metalworking shops for soldering wires and repairing metal parts. For example, they are excellent for soldering copper pipes.

Putty and old paint can be removed from furniture and walls using an electronic hot air gun. People frequently use them to separate pictures from walls and other hard surfaces because they can melt all types of glue. Furthermore, hot air guns can be used to make various household and decorative items. They are popular among artisans due to their ease of use and accuracy, which is critical for small craft items.

Workers frequently used hair dryers to wrap goods in factories with shrink wraps. However, a hot air gun is much more convenient for shrink wrapping and works much faster than a hairdryer.

Temperature controls

Hot air guns with only one heat setting and one fan speed are intended primarily for paint stripping. More complex models have two or three heat settings, or even fully variable adjustment within a range, and a choice of two, three, or variable airflow speeds.

Any heat gun’s effective temperature can be reduced by holding it further away from the surface but having variable settings gives you more options.

Maximum speed and air flow are generally required for paint stripping. These settings are also needed for other jobs like soldering plumbing joints and freeing rusted nuts. Other heat gun applications require lower air flows and/or lower temperatures. Other applications for the heat gun include drying paint or varnish (30 – 130°C) with caution because dust particles may be blown onto the paint/varnish.

  • 100 – 200°C for drying damp wood before filling or painting.
  • 300 – 400°C for softening adhesive when applying worktop edge trim or lifting floor tiles.
  • 200 – 300°C for bending plastic pipes and heat-shrinking plastic film
  • 330 – 400°C for welding some plastics

A hot air gun should never be used near copper plumbing with solder connectors because the heat can melt the solder and weaken the joints. In addition, special nozzles for purposes other than paint stripping are available.

Operating principles of hot air guns

A hot air gun’s operation is like that of a hairdryer in that both produce heat and emit hot air streams. However, the temperature is much higher than that of a hairdryer, which is why this heat is used to melt various materials.

A fan inside the hot air gun body draws in outside air to create a continuous hot air flow. Corded hot air guns are powered by electricity, whereas cordless ones are powered by batteries.

When the hot air gun is powered up, the heating element produces a high temperature and heats the air. The hot air then exits through a nozzle attached to the heat gun.

When stripping paint, heated air is directed onto the painted surface, softening it so that it can be easily removed with a stripping knife or hook. For the best results, use the hot air gun above the stripping tool to soften the paint just before the stripping tool reaches it. The device is used one-handed, with the stripping tool in the other.

Some heat guns can be used while sitting on a bench, leaving two hands-free to use the hot air for other purposes.

Hot air gun characteristics

Different features and attachments are required to adjust your hot air gun for maximum efficiency. Various brands and models of guns exist, but these features and attachments are almost universal.


The general power of a hot air gun typically ranges from 1 000 W to 2 000 W. The higher the wattage, if there are heat and/or airflow controls, the better.

The control switch

The main switch on a hot air gun, located in front of the trigger grip, turns the gun on and off. This “dead man” switch is a hot air gun safety feature turning off the gun when you remove your finger from the trigger.

Temperature control

You can change the temperature depending on the task at hand. Use less than 260°C for materials with low melting points. Otherwise, use a higher temperature that is within the range of your hot air gun. If the proper temperature is not set, things can go wrong, and your workpiece may be damaged.

Airflow controls

Set the low airflow option while working on a small area with a high-temperature setting. However, if you need to work in a large area, always set the airflow to high. Otherwise, the temperature will rise, and the surface will burn.

Thermal cut out

This feature turns off the tool if it becomes too hot. If this occurs, it indicates a flaw in the device or method of use that must be identified and corrected before the hot air gun is used again for safety.

Flex length

Flex lengths of two to three metres are typically fitted, which means that when using an extension lead, the tool can be used at full reach without the socket hanging in mid-air.


Some hot air guns have a hook from which the tool can be hung. Others have a surface stand that allows the heat gun to be safely ‘rested’ during work pauses and after use. It also enables the gun to be used “hands-free” when two hands are needed on the workpiece.

Setting nozzles

When using a hot air gun, you must use the correct nozzle because they control the hot airflow, which varies depending on the task. Four types of nozzles, each with a different size, are essential for regular work with a heat gun.

  • When you want to concentrate heat on a specific area, use a reducer nozzle.
  • The reflector nozzle wraps around a plastic or copper pipe to distribute heat evenly.
  • A flat nozzle distributes hot air over a larger, narrower area.
  • The glass protector nozzle keeps direct heat off the glass when stripping paint from a window.

Types of hot air guns

Let’s break down the hot air gun list.

Electric heat guns

Corded or cordless electric hot air guns are available. This type of heat gun is the most common and, of course, the most effective for various projects. The popular electric heat gun has an energy-saving system that can help you save money on your electric bill. It’s worth noting that you can use the electric heat gun for multiple projects without running out of power.

Electric hot air guns have largely replaced ‘traditional’ paraffin and bottled gas blowlamps for stripping paint from wood. Although a heat gun’s hot air flow is less dangerous than a naked flame, it can still cause highly flammable items to catch fire, crack glass, and cause injury if directed onto skin. One significant advantage is that the heat is almost instantaneous, allowing the hot air gun to be switched off during breaks, whereas flame blowlamps must be relit if the flame is extinguished.

When used correctly to strip paint, electric heat guns are lightweight, easy-to-use tools that are far less likely to scorch wood or crack glass.

Industrial hot air gun

If you’re looking for a heat gun to help you work in heavy-duty areas, an industrial heat gun is larger but may require electricity.

Gas-powered hot air gun

Because they use a lot of gas while working, gas-powered heat guns are not very popular. Furthermore, gas power heat guns are used in heavy-duty heating areas.

Hot air gun safety

  • Although a hot air gun is safer than a naked-flame blowlamp, it must still be used with caution. Because of the power of these tools (up to 2 000 W), when an extension lead is required, only use a 10 amp or greater lead, and always completely unwind the lead.
  • Never block or cover the air intake grills. The heat gun will overheat and possibly catch fire if the airflow is reduced.
  • Never use the heat gun with the outlet nozzle pressed against a surface. This reduces airflow and can have the same effect as blocking the air inlet grills.
  • Use a heat gun away from flammable materials.
  • Always turn off the tool before placing it on any surface.
  • Allow the tool to cool completely before storing it.
  • While the nozzle is hot, do not place it near anything.
  • Never touch the hot metal nozzle to your skin or clothing.
  • Do not use to remove lead-based paints.
  • Avoid getting paint stuck to the nozzle, and allow the gun to cool before removing any paint.
  • Don’t look down the nozzle while the hot air gun is in use
  • Never insert anything down the nozzle.


Q: Are hot air guns more dangerous than torches and flame throwers?

A: Heat guns are less dangerous than torches and flame guns because they are less likely to generate flames and catch fire.

Q: What is a thermal cut-out in a hot air gun?

A: It is a feature that turns off the heat gun when it becomes too hot.

Q: Are heat guns portable?

A: Cordless heat guns are extremely portable and easily transported from one location to another.

Q: How simple are heat guns to use?

A: A hot air gun is simple, but you should always follow the above-mentioned safety tips when using the tool.

Q: How long can a heat gun be used?

A: You can continuously use a hot air gun for nearly 15 to 20 minutes without stopping.

Q: How hot can a hot air gun get?

A: It depends on heat guns. Temperatures vary depending on the type of heat gun used. A standard heat gun can reach temperatures of up to 760°C. When you use an industrial-grade tool, you will also get more temperature.

Q: Can a heat gun start a fire?

A: Using the heat gun for up to 40 minutes without stopping may start a fire. Furthermore, you should inspect the safety features before each use because safety problems cause most fires.

Contact M.E.E. for details

Hot air devices and welding machines from ZINSER are used wherever professionals use hot air. So for all your hot air gun needs and repairs, get in touch with us today for more information.

What is an Ultrasonic Generator?

An ultrasonic generator is one of the great energy generators of our time. Used in a wide variety of applications, it can transmit electrical energy to a particular system’s ultrasonic transducers.


It is the function of the ultrasonic generator to convert energy to the right amperage, frequency, and voltage for use. The selection of the ultrasonic generator should be specific to the application for which it will be used. The ultrasonic waveform can also be adjusted so that the energy conversion is optimal in any particular circumstance.


M.E.E. are the leading supplier of fully automated ultrasonic generators for plastic joining applications and are on standby to assist you. Contact them today to speak to one of their friendly consultants for more information.


As a leading provider of ultrasonic welding equipment and a leader in plastic joining, we have the answers to all your ultrasonic welding questions.

What is ultrasonic welding?

Ultrasonic welding is a solid-state joining process that uses high-frequency ultrasonic acoustic vibrations. These vibrations are applied locally to workpieces that are held together under pressure.

What types of materials can be ultrasonically welded?

Ultrasonic welding is used to join thermoplastics that are soft and rigid and thermoplastic composites. In addition, it can be used to join metals like aluminium, brass, copper, most precious metals, and nickel alloys. The method can also be used to join dissimilar metals.

Is ultrasonic welding waterproof?

Ultrasonic welding does not produce naturally waterproof or airtight joins for products like water tanks, coffee pots, vacuum cleaner casings, etc. However, water or airtightness requirements can be met with proper positioning of the upper and lower plastic shells to be joined, weld line structure, wall thickness, materials, and ultrasonic frequency and power.

Is ultrasonic welding safe?

Ultrasonic welding is safer than many traditional welding methods because it does not require high temperatures or produce fumes. In addition, because it is highly targeted, this technique poses fewer risks that may result from excess electrical energy.

Is heat generated during ultrasonic welding?

Ultrasonic welding generates low amplitude mechanical vibrations using high-frequency ultrasonic energy. These vibrations generate heat where the parts being welded come together. While this heat is sufficient to melt thermoplastic materials, it is insufficient to melt the metals being joined.

What is the highest frequency that can be used in ultrasonic welding?

Ultrasonic welding has a maximum frequency of 70 kHz. The lowest frequency used is 20 kHz, which is barely audible to humans. Higher frequencies can only be perceived as vibrations.

What are the advantages of ultrasonic welding?

In plastic welding, internal heat generation causes less material to be heated, resulting in a smaller heat-affected zone and a lower chance of deformation. In addition, ultrasonic welding produces extremely fast cycle times, typically less than a second.

In metal welding, the metal does not melt during the solid-state process. Instead, it softens to the point where it can be pushed together, resulting in improved strength retention. And in addition to fast cycle times, ultrasonic welding offers greater precision in heating control than most other metal welding processes.

What is a sonotrode?

Sonotrodes are ultrasonic welding tools that vibrate when high-frequency mechanical oscillations are applied. They are designed using the Finite Element Method (FEM), which ensures optimal oscillation behaviour and longevity.

What is the function of sonotrode?

A sonotrode is used in ultrasonic machining, welding, and mixing and generates ultrasonic vibrations that it transfers to a gas, liquid, solid, or tissue. A sonotrode is typically made of a stack of piezoelectric transducers connected by a tapering metal rod.

What is a booster in ultrasonic welding?

Boosters, also known as amplitude transformers, are an essential component of the resonant structure. They change the amplitude provided by the converter and send it to the sonotrode. The amplitude varies depending on the plastic weld component.

How does an ultrasonic booster work?

The ultrasonic booster modifies the transducer’s vibrational output and transfers ultrasonic energy to the horn. In general, the booster provides a method for mounting the ultrasonic stack to a support structure. The ultrasonic horn then makes contact with the load and delivers power to it.

How is a sonotrode fixed to a booster?

The sonotrode is mechanically attached to the ultrasonic stack’s booster. The final amplitude experienced at the sonotrode face, and thus the amplitude used to weld two metal materials, is determined by the shape of the sonotrode.

What is an ultrasonic welding horn?

Ultrasonic horns are a catch-all term for all ultrasonic transmitters and are an essential component of ultrasonic welding equipment. Its purpose is to couple the transducer’s ultrasonic waves into the object being processed. Because it will be transmitting ultrasonic waves, the welding horn must be in a resonant state, meaning its natural resonant frequency must match that of the transducer. Second, the amplitude should be uniform, and the shape of the welding horn’s end face should match the shape of the workpiece to be welded.

What is an ultrasonic generator?

The ultrasonic generator produces a sinusoidal or pulse signal with a specific frequency, which is the working frequency of the transducer. Ultrasonic equipment uses ultrasonic frequencies of 20 kHz, 25 kHz, 28 kHz, 33 kHz, 40 kHz, 60 kHz, and above 100 kHz.

What is an ultrasonic generator used for?

The ultrasonic generator’s function is to convert mains electricity into a high-frequency alternating current signal that is matched with the ultrasonic transducer to drive the ultrasonic transducer to work.

What does HF stand for in welding?

High frequency (HF) welding is the process of fusing materials together by applying a rapidly alternating electric field between two bars in the joint area. It is also known as radiofrequency (RF) or dielectric welding. High-frequency welding only works with thermoplastics with a high dielectric constant, which is determined by the geometry and dipole moment of the molecule.

In general, high-frequency welding is not recommended for polypropylene (PP), polyethylene (PE), polytetrafluoroethylene (PTFE), polycarbonate, or polystyrene. However, because of the impending restrictions on the use of polyvinyl chloride (PVC), a special grade of polyolefin has been developed that can be HF welded.

High-frequency welding is commonly used in the production of medical supplies, including protective clothing, gel- and foam-filled cushions, lumbar support, hydration reservoirs, medical air and water mattresses, and stretcher and bed covers. Other products manufactured through high-frequency welding include flexible storage tanks, inflatable life jackets, flexible ducting, bellows, curtains, conveyor belts, water weights, lifting bags, inflatable boats, life jackets, life rafts, and other buoyancy equipment.

What are barrier materials in welding?

Barrier or buffer materials thermally insulate the weld area, allowing a larger weld area for a given amount of radiofrequency power. Elephantidae, polyester film, or phenolic laminates with high dielectric properties are frequently used to line the base plates. They also keep the edge of a tear-seal electrode from making contact with the bottom plate and causing an arc.

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