Application of Hot Melt Glue Machine in Cable and Optical Cable

Hot melt gluers are not only widely used in the packaging industry, but are also often used in some public equipment. Like some cables or fiber optic cables, due to the exposure to wind and sun over the years, good waterproof and moisture resistance is required to ensure the performance and design life of the cable and cable.

At present, the number of metal communication cables produced and used in China is the largest in the city. The conductive medium of urban communication cables is copper conductors. The polyolefin material is extruded on the surface of the copper wire as an insulating layer, and the entire cable is encapsulated with the polyolefin material. Polyolefin material is a kind of polymer material. The gap between polyolefin molecules is large, and the diameter of water molecules is small. Therefore, polyolefin materials cannot prevent the penetration of water molecules. The waterproof and moisture-proof performance of cables is very important. Moisture will reduce the insulation resistance of the cable core wire, other electrical parameters will also change, and it will also cause corrosion of the copper wire. Metal tape (aluminum tape or steel tape, etc.) is often used as a moisture barrier for cable jackets. The metal bars are filled with dry air or grease to keep the core dry.

In the sheathing process for cable production, straight metal strips are rolled into cylinders through longitudinal wrapping dies, so there are overlapping seams. In order to improve the flexibility and lateral pressure resistance of the cable, the metal strip is often embossed. Influence of water and humidity resistance. At the same time, after the contact area of the metal tape is reduced, the peeling force of the lap joint of the metal tape is reduced, resulting in unqualified cables. In order to solve the above problems and ensure the normal service life of the cable, people often use a hot melting point glue machine to connect the metal belt lap joint, which requires the use of a hot melting point glue machine.