As an important protective equipment for welders working in harsh environments such as high temperature, high radiation, and slag splash, welding clothes have special performance requirements. Its manufacturing materials and bonding process are directly related to the protective effect and wearing comfort of welding clothes. In the production of clothes, hot melt adhesive film for welding clothes has gradually become one of the key composite materials, helping to improve the heat resistance, wear resistance, and fire resistance of welding clothes, ensuring that workers get the maximum degree of safety protection in high temperature operations.
1. Basic characteristics of welding clothes
Welding clothes are protective clothing specially designed for welders. Their primary task is to protect workers from high temperature, open flames, welding slag and radiation during welding operations. Therefore, welding clothes need to have the following important characteristics:
- Heat resistance: The material of welding clothes must be able to withstand high temperatures to prevent sparks and heat generated during welding from damaging workers’ skin.
- Fire resistance: During welding operations, slag splashes and sparks may come into contact with workers’ clothes at any time, so welding clothes must have good flame retardant properties to avoid fires.
- Wear resistance: The working environment of welders is mostly rough construction sites or workshops. The material of welder clothing must be wear-resistant and can be used for a long time in a complex environment without damage.
- Breathability and comfort: Although welder clothing is mainly used for protection, when worn for a long time, welder clothing must also have a certain degree of breathability to maintain a comfortable wearing experience and prevent excessive stuffiness.
It is precisely because of these stringent requirements that welder clothing usually uses materials such as cowhide, canvas, and flame-retardant cloth. These materials can not only resist the invasion of high temperature and flames, but also have good wear resistance and breathability. However, in the manufacturing process of welder clothing, different materials need to be compounded together to improve their overall performance. In this composite process, hot melt adhesive film becomes an indispensable key bonding material.
2. Types of hot melt adhesive film for welder clothing
Hot melt adhesive film is a commonly used bonding material in the production of welder clothing. It melts after heating to form a strong bond, which can tightly combine fabrics, leather and other materials of different materials. According to actual usage requirements, the types of hot melt adhesive films suitable for welder’s clothing mainly include PA hot melt adhesive film and TPU hot melt adhesive film.
PA hot melt adhesive film
PA (polyamide) hot melt adhesive film is a material widely used in fabric, leather and paper composites. It is characterized by high temperature resistance, dry cleaning resistance, and has the advantages of no elasticity and high bonding strength. It is suitable for bonding applications of protective clothing such as welder’s clothing. The use temperature of PA hot melt adhesive film is usually around 120℃, which is suitable for operation in high temperature environment, and its durability is good, which can ensure the stability of welder’s clothing in long-term high temperature operation.
For some application scenarios with more stringent high temperature requirements, the HY-W5120 model in PA hot melt adhesive film can provide temperature resistance of about 200℃. This type of hot melt adhesive film is widely used in the manufacture of welder’s clothing in extreme environments, which can effectively enhance the high temperature resistance of welder’s clothing and ensure the safety protection of workers in high temperature environments.
TPU hot melt adhesive film
TPU (thermoplastic polyurethane) hot melt adhesive film has a wide range of applications, especially in the production of various clothing products such as welding clothes, assault clothes, sports shoes, seamless underwear, etc. The processing temperature range of TPU hot melt adhesive film is relatively wide, generally between 110℃ and 160℃, and it has a variety of adjustable processing temperature options, suitable for different materials and process requirements.
Compared with PA hot melt adhesive film, TPU hot melt adhesive film has better flexibility and elasticity, and can provide good comfort and breathability for welding clothes. In addition, its waterproof, washable and non-penetrating properties also add a lot to the protective performance of welding clothes. The environmental protection characteristics of TPU hot melt adhesive film are also in line with the current concept of sustainable development, ensuring that no harmful substances are released during the production process.
3. Performance comparison of PA and TPU hot melt adhesive films
PA hot melt adhesive film and TPU hot melt adhesive film each have their own advantages and are suitable for different application scenarios of welder’s clothing:
- Temperature adaptability: PA hot melt adhesive film has more outstanding high temperature resistance and is suitable for welder’s clothing that needs to withstand extreme high temperatures; while TPU hot melt adhesive film has a more flexible processing temperature and is suitable for bonding a variety of different materials.
- Bonding strength: PA hot melt adhesive film performs well in high temperature and complex environments, and its bonding strength and durability are suitable for welder’s clothing that requires long-term wear resistance. TPU hot melt adhesive film is known for its flexibility and elasticity, and is suitable for materials that require a certain degree of ductility.
- Environmental protection: TPU hot melt adhesive film has more outstanding environmental protection and is suitable for products that require green and environmental protection during the production process. It does not release harmful substances and meets the high standards of modern industry for environmental protection.
4. Application and advantages of hot melt adhesive film for welder's clothing
In the actual production of welder’s clothing, PA and TPU hot melt adhesive films have been widely used in the composite bonding of different materials. These two adhesive films not only have good bonding strength and temperature resistance, but also can improve the protective performance of welder’s clothing, ensuring that workers can work safely in harsh environments.
The advantages of hot melt adhesive film include:
- Easy operation: hot melt adhesive film can be bonded by heating, without the use of solvents or chemical adhesives, reducing the complexity of operation.
- Strong bonding: The hot melt adhesive film has high bonding strength, which can ensure that welder’s clothing is not easy to delaminate or fall off during use.
- Environmental protection: hot melt adhesive film meets environmental protection standards, has no volatile organic compound (VOC) emissions, and ensures the health of workers and the safety of the production environment.
- Multi-purpose adaptability: Whether it is cloth, leather or other special materials, hot melt adhesive film can provide excellent bonding effect and meet the various production needs of welder’s clothing.
5. Conclusion
As an indispensable protective equipment for electric welders, the choice of hot melt adhesive film directly affects the protective performance and durability of the product during its production process. PA and TPU hot melt adhesive films play an important role in the composite process of welder’s clothing with their respective advantages. By choosing the right hot melt adhesive film, welder clothing can not only provide effective protection in harsh environments such as high temperature and welding slag splash, but also ensure workers’ comfortable experience during long working hours.
If you have any needs or questions about hot melt adhesive film for welder clothing, please feel free to contact us, we will provide you with professional solutions and free sample testing services.
