5 Mistakes every Plastic Extrusion & Plastic extrusion manufacturer commits2020-07-22
A simple guide to understanding plastic profile extrusion business
Plastic Extrusion & Plastic extrusion manufacturer - process and functionality
The extrusion of plastic materials is an industrial process. Plastic Extrusion & Plastic extrusion manufacturer requires several steps, the use of specific machinery and technologies.
Extrusion is a mechanical operation. It subjects specific thermoplastic materials previously worked to particular compression forces. Through which it is possible to give the desired shape to the material subjected to processing.
What is plastic extrusion?
Until now, only industry experts knew what the process of extrusion of plastics consists of? And how fundamental it is to keep the rest of industry moving forward?
Now we will try to make the general public understand everything about Plastic Extrusion & Plastic extrusion manufacturer.
You need to know about this process.
This industrial process makes it possible to produce plastic pieces in a series in a very easy way. Therefore it is an excellent solution for those who need a significant amount of realizations in plastic materials. Such as the widespread PVC.
Extrusion is a plastics processing technique which allows the creation of constant section products. Such as:
- plates and
- Various plastic sections type.
Its characteristic is that of creating objects with great versatility.
The first attempts at extrusion procedures date back to the end of the 19th century. But only at the end of the Second World War was there a real increase in this type of technique.
History of the extrusion process
Plastic Extrusion & Plastic extrusion manufacturer experienced a worldwide boom in the 20th century. The extrusion of plastics has established itself as an important procedural element for the production of thermoplastic articles.
The Plastic Extrusion & Plastic extrusion manufacturer technique is used with metallic materials. For instance,
- plastic materials
- And in general with materials that have high plasticity.
The types of plastic that can be used are different, including PVC, PE, PP and PA, as well as rubber.
How does Plastic Extrusion & Plastic extrusion manufacturer work?
In this technique the material, which must be pasty, is passed by compression through a template. It reproduces the external shape of the piece to be obtained.
As for plastic deformation, here are the steps:
- Plastic Extrusion & Plastic extrusion manufacturer heatsthe plastic material
- subsequently the shape is given by compression through the matrix
- The plastic is finally subjected to a cooling-consolidation process.
Plastic extrusion Como: what it consists of
Let's start by answering the main question “what is the extrusion of plastic materials?".
By this term we mean a procedure that has as its purpose to deform the plastic material to create products with a constant section.
What does the Plastic Extrusion & Plastic extrusion manufacturer process consist of?
Let's see it together. The basic concept is quite simple: the plastic granules enter is forced into a matrix through a worm screw. The heat generated by the friction between the walls of the mold and the granules determines the dissolution of the latter.
Plastic Extrusion & Plastic extrusion manufacturer passes through flexible plastic and sectioned to size. Should the final product be hollow; the mold will have an internal core on which the plastic material will be modeled.
Extrusion is a shaping process that is used, among other things, for thermoplastics. The principle of operation of the extrusion is very easy to understand.
In the process, solid to viscous masses are continuously pressed out of a shaping opening under high pressure. This is known as:
- a nozzle
- mouthpiece or
This creates a body of almost any length. The cross section of which corresponds to the opening. This is called the extrudate. Plastic Extrusion & Plastic extrusion manufacturer uses extruders’ machines for this.
Usual Plastic Extrusion & Plastic extrusion manufacturer designs:
- Multi-shaft extruder
- Cascade extruder
- Planetary roller extruder
- Single screw extruder
- Twin screw extruder
The extrusion is used for a variety of materials outside of plastic processing, e.g. B. for:
- Tones and other ceramic masses
- Thermoplastic polymer polymers such as PVC, PP, PE, PET, PA and many more
- Thermoplastic masses made from corn starch and lignin
- Dough-shaped food and feed mixtures
- Composite materials such as fiber-reinforced plastics
General information on the process of extrusion in plastics processing
Depending on which product is to be manufactured and which material is used, extrusion works with pressures between 10 to 300 or 700 bar.
Similarly, temperatures can be between 60 and 300 ° C. For example, the terms 25D, 30D, 40D etc. are used as the length designation for extruders.
This means that the length of the extruder is 25, 30 or 40 times the diameter of the screw diameter. In order to enable a higher output, Plastic Extrusion & Plastic extrusion manufacturer makes extruders.
They are called high-speed machines. They reach speeds of up to 1500 revolutions per minute.
Different Plastic Extrusion & Plastic extrusion manufacturer process principles for extruders
Extruders are generally divided into two process principles:
- The processing and
- Preparation extruders.
In terms of functionality, processing extruders are generally used for pure shaping. Similarly, they are mostly single-shaft extruders.
Processing extruders, on the other hand, are used to modify the processed materials from a chemical point of view. In them, the reaction or the mixture of different substances takes place.
There are also special extruder designs for so-called extrusion blow molding.
The origin of extrusion as a forming process for thermoplastic materials is more than 200 years ago. In 1797, seamless lead pipes were manufactured in England for the first time using hand-operated piston presses.
Similarly, in 1845, hot plastic masses were processed with the first screw presses. In 1820, Thomas Burr inspired plastic extrusion with his invention of the hydraulic press.
The basic principle of Plastic Extrusion & Plastic extrusion manufacturer technology is still similar today. Although the technology is constantly evolving.
Today plastic extruders are digital all-rounders with which even the most complex profiles can be produced quickly. They are in high quality and reproduced reliably.
Extrusion versus injection molding - what are the differences?
In addition to injection molding, extrusion has established itself for the production of thermoplastic plastic products. Both methods offer certain advantages depending on the requirements.
We would like to briefly describe the most important differences - especially with regard to the requirements in electrical engineering.
5 common mistakes about Plastic Extrusion & Plastic extrusion manufacturer
In many projects, the question arises as to which method should be used to manufacture plastic components for electrical engineering applications. Here we often experience that project managers decide against the extrusion process based on prejudices. Therefore we want to clear up some mistakes:
Fallacy 1: “Plastic extrusion is not as precise as injection molding.”
Our specially developed extrusion process enables precision and surface quality that is just as good as the injection molding process with high-performance tools.
Mistake 2: “Plastic extrusion is more expensive than injection molding.”
On the contrary: as a continuous process, extrusion is even cheaper than injection molding, especially for larger quantities. Once properly set, the quality is continuously high. The care effort is reduced.
Mistake 3: “Plastic extrusion takes longer than injection molding.”
As soon as the tools and materials have been run in, the running times are very short. 10,000 meters a day are no problem in the extrusion process.
Fallacy 4: “Plastic extrusion is less durable than injection molding.”
If the tool shop is in-house, the tools are always in the best hands. The utmost care enables tool life of more than 1 million meters.
Fallacy 5: “Plastic extrusion offers less design freedom than injection molding.”
Especially with the length of components, the scope for extrusion is infinite. And there are hardly any limits to the flexibility in the cross-section of plastic profiles.
Conclusion: Plastic Extrusion & Plastic extrusion manufacturer
When we talk about Plastic Extrusion & Plastic extrusion manufacturer, we refer to an industrial production process. This presupposes a plastic deformation through which pieces with a constant section can be made. Such as for example:
- Bars or tubes.
This process is used for metallic materials. Such as:
- aluminium or steel,
- But also for plastics, such as thermoplastic materials or rubber.
The extrusion of pvc profiles it is one of the best known and most frequent examples from this point of view. But what exactly is the process in question? Through extrusion, the material to be treated, it is in a pasty state. Plastic Extrusion & Plastic extrusion manufacturer forces it by compression.
If the section of the piece to be obtained is hollow, the profile of the internal cavity is reproduced by a core. For plastic materials, the Archimedes screw is used to compress the material upstream of the die and push it towards the extrusion head.
Plastics can be introduced either in powder or in the form of pellets, i.e. in the form of granules. Therefore, softening occurs if they are semi crystalline. While melting occurs if they are crystalline polymers. In both cases, the result is due to the heat that is determined by friction with the walls of the extruder.
It is evident that the reverse extrusion is characterized by lower friction forces. Even if there is a weak point: the piston action, in fact, can exert lower intensity pressures.