Stripping force of upper cover tape: stripping force is the most important technical index of upper belt. The mounting manufacturer needs to peel the upper belt from the carrier belt, take out the electronic components encapsulated in the pocket and install them on the circuit board. In this process, in order to ensure that the manipulator can be positioned accurately and the electronic components will not jump or turn over, the stripping force of the upper belt from the carrier belt must be stable enough.

The size of electronic components is becoming smaller and smaller, so the requirements for the stability of stripping force are becoming higher and higher. Upper band optical properties: optical properties include haze, transmittance and transparency. –Stripping force of upper tape

Since it is necessary to observe the marks on the electronic component chip encapsulated in the belt carrying pocket through the upper belt, there are certain requirements for the light transmittance, haze and transparency of the upper belt. Upper tape surface resistance: in order to prevent electronic components from being adsorbed to the upper tape by static electricity, the upper tape surface usually has anti-static requirements. The level of antistatic is expressed by surface resistance.—Stripping force of upper tape

Generally, the surface resistance of the upper band shall reach 10e9-10e11. Tensile properties of upper belt: tensile properties include tensile strength and elongation (tensile percentage). Tensile strength refers to the maximum stress that the sample can withstand before fracture. Similarly, elongation refers to the maximum deformation that a material can withstand before breaking. Tensile strength is generally expressed in Newton / mm (or MPa) and elongation is expressed in percentage. force of upper covertape

Stripping force of upper cover tape: stripping force is the most important technical index of upper belt. The mounting manufacturer needs to peel the upper belt from the carrier belt, take out the electronic components encapsulated in the pocket and install them on the circuit board. In this process, in order to ensure that the manipulator can be positioned accurately and the electronic components will not jump or turn over, the stripping force of the upper cover tape from the carrier belt must be stable enough.

The size of electronic components is becoming smaller and smaller, so the requirements for the stability of stripping force are becoming higher and higher. Upper band optical properties: optical properties include haze, transmittance and transparency. –Stripping force of upper cover tape

Since it is necessary to observe the marks on the electronic component chip encapsulated in the belt carrying pocket through the upper belt, there are certain requirements for the light transmittance, haze and transparency of the upper belt. Upper tape surface resistance: in order to prevent electronic components from being adsorbed to the upper tape by static electricity, the upper tape surface usually has anti-static requirements. The level of antistatic is expressed by surface resistance.—Stripping force of upper cover tape

Generally, the surface resistance of the upper band shall reach 10e9-10e11. Tensile properties of upper belt: tensile properties include tensile strength and elongation (tensile percentage). Tensile strength refers to the maximum stress that the sample can withstand before fracture. Similarly, elongation refers to the maximum deformation that a material can withstand before breaking. Tensile strength is generally expressed in Newton / mm (or MPa) and elongation is expressed in percentage.