Brief Introduction of Auxiliary Machines for Plastic Packing Belt Production

Packaging steel belt manufacturers introduce to everyone the auxiliary machines for the production of plastic strapping belts
　　 The structure of the auxiliary machine for the production of plastic strapping belt is basically similar to the auxiliary machine for the production of monofilament and flat yarn. It mainly consists of a cooling water tank, a drafting heating device, an embossing device, a cooling and setting roller set, a traction roller and a coiling device. .
　　―, cooling water tank
　　The cooling water tank is used to cool and solidify the strap blanks. It is welded by steel plates and is equipped with cooling circulating water. The cooling water surface is 150-250mm from the die mouth, and the cooling water temperature is controlled below 30-40℃.
　　 2. Stretching heating device
　　The stretching heating device is composed of two sets of fast and slow drafting rollers and a heating device. Through the speed difference of the two sets of drafting rollers, the heated strip is stretched to the required product thickness and width.
　　 The two sets of draft rollers are driven by a DC motor, and the traction speed difference of the two sets of draft rollers can be adjusted according to the requirements of the drafting ratio during drafting. There are two heating methods when the strip is drawn: one is heating with 95-100℃ boiling water; the other is using resistance heating oven, and the temperature is controlled between 130-190℃ in sections. The temperature should be determined according to the raw material properties and the running speed of the strip.
　　Three, embossing device
　　 After the plastic strapping is stretched and shaped, the surface must be embossed with patterns, the purpose is to facilitate the connection of the two ends and prevent slippage; after the surface embossing pattern modification, the surface of the product is also more beautiful.
　　The embossing device has a relatively simple structure and is composed of a pair of steel pattern rollers with adjustable upper and lower gaps. The stretched plastic packing belt undergoes a certain pressure between the two pattern rollers to make the surface of the packing belt press patterns.
　　 Four, cooling and shaping roller set
　　 After stretching, the package has a certain internal stress, and the product must have a certain shrinkage deformation. The purpose of setting the cooling setting roller group is to increase the cooling operation time of the strap in the stretched state and at room temperature to achieve the purpose of eliminating its internal stress.
　　 5. Coiling device
　　 In order to make the product tightly and smoothly wound on the mandrel, the transmission device is required to be driven by a DC motor, and the reel end should also be equipped with a friction clutch, so that the product winding speed can increase with the increase of the winding diameter The speed slows down, so that the coiled product maintains a relatively constant tension.