Matters needing attention when extruding pet plastic steel strappingMatters needing attention when extruding pet plastic steel strapping
The main function of pet plastic steel strapping is to bind the goods, not to easily damage or slide the goods, so as to better keep the goods intact. Has been widely used in the packaging industry. Extrusion molding is a relatively important stage in the forming process of PET plastic steel strapping. In general, there are several things that need to be paid attention to during such processing.
1. The structure of the forming mold is preferably a right angle type, and the gap adjustment of the die in the mold should be slightly smaller than the thickness of the belt blank.
Second, if the oven is used to stretch the strap, the temperature in the oven should be divided into three temperatures. The temperature in the inlet section is higher and the temperature in the outlet section is correspondingly lower.
3. The proportion of fillers should be strictly controlled to ensure the tensile strength of the strapping.
Fourth, control the temperature of the barrel, and also need to control the temperature of the cooling water. At the same time, we should also pay attention to the synchronization of the stretching, shaping and winding speed of the packaging belt.