How are plastic seals producedHow are plastic seals produced
PVC plastic sealing strips are very common among the sealing strips. Generally, plastic sealing strips can be divided into two parts for extrusion production during production. One part is to produce raw materials into the plastic particles we need according to the quality of the product. The second part is to extrude the product through plastic pellets. Single-extrusion sealing strips such as door and window sealing strips are produced in a relatively simple production process. We first mix various raw materials through a kneader according to the product's formula. When all the raw materials are evenly mixed, they can be put into the feeding port of the plastic pelletizer for feeding. The raw materials begin to heat in the screw barrel of the plastic pelletizer. After the raw materials are heated, they are plasticized and appear to melt and follow the The rotation of the screw extrudes toward the die head of the extruder. The raw materials are extruded out of the screw barrel through the die of the plastic granulator to form a plurality of cylindrical strips. These strips are cooled by water and then cut into granules by the pelletizer. When we produce the sealing strip, we use these plastic particles for extrusion production. The plastic particles enter the screw barrel through the feeding system of the plastic extruder and are processed by a screw to shear and mix. Finally, extruded into the shape of the sealing strip we need at the die head of the plastic extruder.