What is a characteristic of thermoforming polymers?

Thermoforming polymers are designed to be heated until pliable, allowing them to be reshaped into various forms. This characteristic enables them to be molded and remolded multiple times with heat, making them versatile for a wide range of applications, such as packaging, automotive parts, and consumer products. This ability to be reformed is a distinct advantage of thermoforming processes, as it allows manufacturers to create complex shapes and designs without significant waste.

The other characteristics mentioned do not apply to thermoforming polymers. For instance, polymers that cannot be reshaped once set, are typically thermosetting polymers, while thermoforming polymers retain their capability to be reshaped with heat. Additionally, thermoforming polymers are not inherently highly brittle; they are often designed to be flexible, which contrasts with brittleness. Lastly, these polymers are generally lightweight rather than heavyweight, making them suitable for various products where weight is a consideration.