UL

UL flame retardant label

With the development of society, the volume and structure of electronic products produced are becoming smaller and more complex. The probability of fire caused by high temperature will greatly increase. In the electronics industry, flame-retardant edge labels for lithium batteries can greatly reduce the risk of battery leakage and increase the safety of battery use. The application of flame-retardant labels in the electronics industry is already very mature. In fact, flame-retardant labels are also widely used in other industries.

In the automotive industry, fire-resistant and flame-retardant labels are also widely used in various components. Every summer, there are always reports of cars catching fire due to high temperatures, leaving only an iron frame burned down. Therefore, for parts that are prone to catching fire in cars, fire prevention measures must be taken. The battery, motor, engine, wiring harness and other parts of the car will use fire-resistant and flame-retardant label materials instead of using labels made of other materials. Do you know the reason for this?

The fire-resistant and flame-retardant labels are made of PET material, which is a polymer material. It has good hardness and brittleness, can withstand certain high temperatures, resist harsh environments, and resist corrosion from chemicals such as acid and alkali. It is suitable for making various durability labels.

Due to the special properties of PET materials, such label products are also applied in many other fields, such as industrial and automation equipment, wind and photovoltaic wiring harnesses, medical equipment, aerospace, electronic communication, and so on.

UL

UL flame retardant and high temperature resistant label

The label material based on polyimide film, combined with specially designed coatings, has excellent printing and printing effects. Mainly used for marking circuit boards and other electronic components in SMT processes, with a temperature resistance of up to 350 ℃ @ 50min, in compliance with UL 94 VTM-0 flame retardant standards, commonly used in products with flame retardant requirements such as lithium batteries and automotive circuit boards. There are two main thicknesses: 0.5mil (0.012mm) and 1mil (0.025mm). The material complies with environmental standards such as Rohs VI, Halogen Free, REACH 2.0 PFOS, etc.

Flame retardant label is a special 1ml (25 μ) polyimide film high-temperature permanent pressure-sensitive acrylic adhesive with high transparency, semi gloss white coat specially designed to be flame retardant to UL94 VTM-0 standard.

UL flame retardant and high-temperature resistant label usage

The material is suitable for harsh environments, including applications that require the material not to spread flames. If exposed to flames, label design is to prevent the spread of flames. The label adopts a unique combination of surface coating, polyimide film, and adhesive to provide flame retardant performance to meet the UL94 VTM-0 standard. In addition, the implementation of flame retardant performance does not use halogenated flame retardant materials, making it suitable for electronic applications.

Flame retardant labels are designed for harsh environments and can be printed with barcode, graphic, or text information using thermal transfer or flexographic ink systems. When printed with an appropriate heat transfer ribbon, the label is resistant to chemical exposure such as isopropanol, terpenes, and saponification agents. Even if the material is directly exposed to friction or accidental contact, the image will not be stained.

What is UL flame retardant label?

The UL flame retardant label refers to a safety certification mark obtained by a product after passing UL (Underwriters Laboratories) flame retardant testing. This symbol represents that the product has passed UL's rigorous safety assessment and meets UL's flame retardant performance standards. As a globally renowned safety certification body, UL's flame retardant label is widely recognized as an authoritative symbol of product quality and safety.

Specifically, the UL flame retardant label indicates that the product material has certain flame retardant properties under specific testing conditions, that is, the material can quickly extinguish after being ignited and will not continue to burn or cause a fire. This is crucial for many industries such as construction, electronics, automotive, medical equipment, etc., as their products may come into contact with sources of fire during use, and therefore must have certain flame retardant properties to ensure safe use.

Standard for UL flame retardant labels

The UL flame retardant label standard is a series of testing standards for material flame retardancy developed by Underwriters Laboratories (UL) in the United States. These standards typically include various testing methods such as vertical combustion testing, horizontal combustion testing, and ultimate oxygen index testing to evaluate the flame retardant performance of materials under different conditions.

Specifically, the standards for UL flame retardant labels may involve the following aspects:

Vertical combustion test: a testing method for evaluating the combustion performance of materials when placed vertically, by observing indicators such as the combustion speed and flame spread length of the sample to assess the flame retardancy of the material.

Horizontal combustion test: a testing method for evaluating the combustion performance of materials when placed horizontally, which also evaluates the flame retardancy of materials by observing indicators such as the combustion speed and flame spread length of the sample.

Extreme Oxygen Index Test: A test method for evaluating the minimum oxygen concentration required for a material to maintain combustion at a specific oxygen concentration, used to determine the flame retardant performance level of the material.

It should be noted that the standards for UL flame retardant labels are not static. With the development of technology and the improvement of safety standards, UL will continuously update and improve its flame retardant testing standards. Therefore, in specific applications, it is necessary to refer to the latest UL flame retardant testing standards to evaluate the flame retardant performance of the product.

We offer comprehensive technical support, including free professional labeling solutions, advice on label materials and adhesive selection, as well as online/offline assistance from professional software and hardware engineers. Service email: andy@ownlikes.cn. In pre-sales, we leverage our extensive experience in specialty labeling projects to provide clients with the most suitable hardware solutions. Additionally, all our label barcode printers and scanners come with a three-year free warranty, demonstrating our confidence in our products.