Main performance indicators of the cover belt


YONGJIA

Release time:

2023-04-10

Peeling force is an important technical indicator of the cover belt. The mounting manufacturer needs to peel the cover tape off the carrier tape, remove the electronic components packaged in the pocket, and install them on the circuit board.

Main performance indicators of the cover belt

Peeling force

Peeling force is an important technical indicator of the cover belt. The mounting manufacturer needs to peel the cover tape off the carrier tape, remove the electronic components packaged in the pocket, and install them on the circuit board. During this process, in order to ensure accurate positioning of the robotic arm and prevent electronic components from jumping or flipping, the force of the cover strip peeling off the carrier strip should be stable enough. The size of electronic component manufacturing is becoming smaller and smaller, so the demand for stable peeling force is also increasing.

optical performance

Optical properties include haze, transmittance, and transparency. Due to the need to observe the markings on the electronic component chips packaged in the carrier pocket through the cover tape, there are requirements for the transparency, haze, and transparency of the cover tape.

Surface resistance

In order to prevent electronic components from being adsorbed by static electricity on the cover strip, there are usually requirements to prevent static electricity on the surface of the cover strip. The level of protection against static electricity is represented by surface resistance. The surface resistance of the cover tape is generally required to reach 10E9-10E11.

tensile property

Tensile properties include tensile strength and elongation (percentage elongation). Tensile strength refers to the large stress that a sample can withstand before fracture. Similarly, elongation refers to the large deformation that a material can withstand before fracture. The tensile strength is generally expressed in newtons per millimeter (or megapascals), and the elongation is expressed as a percentage.