Carrier belt refers to a ribbon product applied in the field of electronic packaging, which has a specific thickness and is equidistant along its length direction with holes (also known as pockets) for holding electronic components and positioning holes for indexing and positioning.

The carrier tape is mainly used in the electronic component mounting industry. It is used in conjunction with a cover tape (upper seal tape) to carry and store electronic components such as resistors, capacitors, transistors, diodes, etc. in the pocket of the carrier tape. By sealing the cover tape above the carrier tape, a closed packaging is formed to protect electronic components from pollution and damage during transportation

When packaging the carrier, the following factors are mainly considered:

1、 The ratio of chip area to packaging area should be as close as possible to 1:1 to improve packaging efficiency;

2、 The pins should be as short as possible to reduce latency, and the distance between pins should be as far as possible to ensure mutual interference and improve performance;

3、 Based on heat dissipation requirements, the thinner the package, the better.

Carrier refers to a plastic carrier widely used for packaging SMT electronic components such as ICs, resistors, inductors, capacitors, connectors, LEDs, fuses, switches, relays, connectors, oscillators, diodes, and transistors.

Physical properties of PC: Polycarbonate is colorless and transparent, heat-resistant, impact resistant, flame retardant, and has good mechanical properties within normal usage temperatures.

Compared to polymethyl methacrylate, polycarbonate has good impact resistance, high refractive index, good processability, and UL94 V-0 flame retardant performance without the need for additives.

The disadvantage of PC is poor wear resistance. Some polycarbonate devices used for wear prone applications require special surface treatment.

PS refers to Polystyrene, which is a thermoplastic synthetic resin.

PS: It belongs to the category of polystyrene, commonly known as hard adhesive.

PC material, also known as polycarbonate, abbreviated as PC, is a colorless and transparent amorphous thermoplastic material. Its name comes from its internal CO3 group.

PC chemical properties, polycarbonate acid resistant, oil resistant; Polycarbonate is not resistant to ultraviolet light and strong alkalis.

Knowledge of belt forming machines: Flat belt forming machines are suitable for belts with a diameter of more than 12mm, especially those with a diameter greater than 4mm; The forming stability of the assembled airborne belt is poor, and it is difficult to control the P2 and F values, making it difficult to perform precise forming.

The roller type belt conveyor has a forming system composed of a concave mold and a convex mold, and the precision of the convex mold can ensure the precision of the belt forming. The current equipment can reach ± 0.05mm, while the imported belt forming machine can achieve an accuracy of ± 0.03mm.

The scientific name of PET is polyethylene terephthalate, which belongs to linear saturated polyester resin. The main raw materials of PET are xylene and terephthalic acid (PTA), which have excellent characteristics (heat resistance, chemical resistance, strong toughness, electrical insulation, safety, etc.) and are cheap. Therefore, they are widely used in fibers, films, engineering plastics, polyester bottles, etc.