The main components of a plastic car seat depend on a piece of plastic on the back of the seat. In the process of backing the plastic mold, there are two processes of injection molding and blow molding. In the blow molding, the extruded molten plastic blank is placed in a mold, and is inflated by compressed air to adhere to the cavity wall, and is cooled and hardened into a plastic part. In the injection molding, the screw or the plunger of the injection machine is used to solidify the melt in the cylinder through the nozzle of the injection machine and the casting system of the mold into the cavity.
At present, more and more parents are aware of the importance of purchasing plastic car safety seats, so it is necessary to correctly distinguish the quality of plastic car seats during the purchase process. The main components of a plastic car seat depend on a piece of plastic on the back of the seat. During the process, there are two processes of injection molding and blow molding.
The blow molding is a tubular plastic parison obtained by extrusion or injection molding of a thermoplastic resin, which is heated (or heated to a softened state), placed in a split mold, and compressed air is introduced into the parison immediately after closing the mold, so that The plastic parison is inflated and adhered to the inner wall of the mold, and is cooled and released to obtain various hollow products.
The injection molding process of the plastic car seat is to inject the molten plastic into the mold of the plastic product by pressure, and to form a variety of plastic parts by cooling, and a mechanical injection molding machine specially used for injection molding, the shape is often The final product no longer requires additional processing before installation or use as a final product.
Intuitive comparison, in general, the plastic car seat of the blow molding process is relatively light; the surface of the blown seat product is generally black, because the blow molding process is very particular about the surface of the product; it can be hardened with fingers The back of the plastic is pressed to make the injection molded product more flexible.http://www.everonplastic.com/