Plastic extrusion

Plastic extrusion

Introduction

Extrusion is the process of obtaining a continuous or semi-finished products (in the form of profiles, sheets or films) with a polymer, consisting of plasticized material in the plasticizing extruder system and its shaping by extrusion through a suitably shaped tip, located in the head. Industries that deal with plastics tend to use the extrusion method to handle customization and lower costs in its production .

The plastic is composed of large molecules formed by the union of simpler and is useful in the production, packaging of various products. The plastic is achieved by chemical reaction of oils and molded by heat or pressure. Thermoplastics are manufactured using the extruder, a machine that processes such materials. The raw material in the form of small grains is fed through a hopper into a barrel heated in a screw cylinder carries along the tube. The material melts the space that it takes up less, and comes out in a final. Subsequently, the plastic manufacturing process is completed by two combined with extrusion blow molding and injection molding pressure.

Discussion and Analysis

The method of extrusion of plastic is used to make tools and household goods and office supplies. This process is beneficial because, while it is a simple method, it is possible to manufacture a large volume of products at lower costs in comparison to other production methods (such as rubber). Thus, extrusion is a technique of making the plastic more common in industries. Generally, the types of plastics that can be extruded are: bats, pipes, gutters, trim and plastic sheets (Bauser, 2006).

History

In the year 1797, a man named Joseph Bramah acquired the rights for the first ever process of extrusion process to manufacture a lead pipe. The process involved the metal pre heated and then passed all the way through a die ...