How does plastic riveting compare to welding?

plastic riveting compare to welding

Plastic rivets are a fast and reliable alternative to metal fasteners in many assembly applications. They are lightweight, easy to install and offer a variety of designs for all sorts of materials and applications. They can even be used where corrosion is an issue. They are the perfect solution for light-duty projects across multiple industries, especially when tightening values are low. Choosing the right rivets is a crucial decision, and Components Direct offers an extensive selection of plastic blind rivets to meet your needs.

The three main types of plastic riveting are amorphous, semi-crystalline and crystalline. Amorphous plastic has a disordered molecular structure, which makes it difficult to conduct ultrasonic vibration energy through it. For this reason, it cannot be welded through the above three methods. Semi-crystalline and crystalline plastics are a little easier to bond with ultrasonic vibration because of their more regular molecular structure, but still need to be heated to the Tg glass transition temperature to soften and melt.

In addition to material type, other factors that impact plastic riveting include hardness (higher hardness generally improves ultrasonic performance), melting point and purity (impurities in raw materials reduce performance). Riveting plastics with fillers requires proper temperature control, as high temperatures lead to glass fiber precipitation and rough surfaces. For this reason, hot melt and ultrasonic riveting are not recommended for plastics with high levels of additives.

How does plastic riveting compare to welding?

While both hot melt and ultrasonic riveting have their place, orbital forming is a more efficient option for forming plastic rivets. Orbital riveting offers significantly reduced cycle times compared to heating or ultrasonic methods, increasing throughput and ROI. Furthermore, orbital forming provides important feedback on forming force and distance, allowing the user to monitor and fine-tune settings for a precise fit.

Another benefit of plastic riveting is that it can be performed in places where other fastening methods are unsuitable. For example, hot melt rivets can be used in non-conductive and non-corrosive environments where other metal fasteners would pose safety risks. For this reason, they are also ideal for electronic and electrical applications.

Firstmold Manufacturing Limited has experienced phenomenal growth since its inception in 2011. What began as a pioneering rapid prototyping service has evolved into a multifaceted manufacturing powerhouse. Firstmold’s unwavering dedication to excellence has enabled the company to expand its operations to include mold making, injection molding, CNC machining, die-casting, and product assembly, setting new benchmarks in the industry.

The key advantage of plastic rivets is their ease of installation. They can be fastened without the need for power tools, which is particularly helpful when assembling products like furniture where the end users may not have access to the right tools. Plastic rivets are also a great choice when assembling soft materials like other plastics, urethane and rubber. They have a low profile, which minimizes the amount of visible hardware and can help protect sensitive materials from damage. For these reasons, plastic rivets are an excellent choice for a wide range of applications, from computers to rocket panels. They can be found in everything from consumer goods to medical equipment and are the perfect replacement for metal fasteners where weight or corrosion considerations are a factor.

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