Final answer:
The primary purpose of a strip heater in line-bending plastics is to facilitate bending. By heating up a specific section, the plastic becomes pliable and can be shaped into the desired angle, then hardens as it cools. Option C is correct.
Step-by-step explanation:
The primary purpose of a strip heater in line-bending plastics is c) Bending. A strip heater applies heat to a localized area of the plastic sheet, making that area pliable enough to bend. This process is often used in the creation of custom plastic components and designs.
Step-by-step, the plastic is heated by the strip heater, then it is bent to the desired angle and held in place until it cools down and sets in the new shape. Unlike a bimetallic strip that bends due to the different expansion rates of two metals, the plastic bends because of the heat softening it sufficiently to allow molding.
The primary purpose of a strip heater in line-bending plastics is c) Bending.
A strip heater uses the heating element to heat a strip of material, such as metal or plastic. When the strip of plastic is heated, it becomes more flexible and easier to bend into shape.
For example, a strip heater can be used to bend plastic sheets into different angles or curves for various applications like creating signs, displays, or prototypes.