Plastic Parts Manufacturing Processing Technology And Materials
The key link in plastic processing. Plastic Parts Manufacturing Various forms of plastic (powder, pellets, solutions or dispersions) are made into articles or blanks of the desired shape. Plastic Parts Manufacturing Forming up to thirty kinds of methods. Its choice depends primarily on the type of plastic (thermoplastic or thermoset)
Shape and shape and size of the product. Plastic Parts Manufacturing Processing thermoplastics commonly used methods are extrusion, injection molding, rolling, Plastic Parts Manufacturing blow molding and thermoforming, processing thermosetting plastics generally use molding, transfer molding, but also with injection molding. Lamination, molding and thermoforming are shaping the plastic on a flat surface. The above plastic processing methods, can be used for rubber processing. In addition, there are liquid monomer or polymer as raw materials such as casting. In these methods, extrusion and injection molding with the most, but also the most basic molding methods. Plastic Parts Manufacturing The method of joining the plastic parts is welding and bonding. Welding method is the use of welding wire hot air welding, the use of hot-spot welding, and high-frequency welding, friction welding, induction welding, Plastic Parts Manufacturing ultrasonic welding. Adhesive method can be used according to the adhesive, divided into flux, resin solution and hot melt adhesive. In the plastic machinery processing, often encounter a variety of plastic processing failure, Plastic Parts Manufacturing these failures in the plastic machinery industry with what kind of professional terms to express more accurate, the following we come to one by one to analyze the plastic processing failure of the technical terms The 1, less note: In the plastic processing, due to filled with dissatisfaction with the cavity, resulting in incomplete shape of incomplete plastic parts of the phenomenon. 2, flash material flash: plastic molding process, the mold into the mold mold surface gap and retained in the plastic parts of the remaining material. 3, welding marks: plastic surface of a linear trace, is injected or extruded in a number of flow in the mouth of the clutch in the fissure, the melt at the interface is not completely fused, can not be welded together as one, resulting in fusion Imprinting, affecting the appearance of plastic parts and mechanical properties. 4, wave flow marks: due to the melt in the mold cavity in the improper flow, resulting in plastic table and produce round-shaped, spiral or cloudy corrugated rugged defects. 5, surface turbidity: refers to the surface of plastic parts have cracks and the formation of the cracks and the resulting damage. Due to prolonged or repeated application of stress less than the mechanical properties of plastic caused by the plastic parts of the external or internal cracks caused by the phenomenon known as stress cracking; due to the specific temperature at a specific temperature for a certain period of time the constant load and suddenly complete a complete rupture The phenomenon is called stress rupture; some of the thermoplastic parts are exposed to excessive temperatures at higher temperatures and cracks are called thermal stress cracking. 6, fracturing: refers to the surface through the resin layer can be seen laminated plastic than the outer layer or layers of reinforced materials have obvious cracks.