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5 Mistakes every Plastic Extrusion & Plastic extrusion manufacturer commits

2020-07-22

A simple guide to understanding plastic profile extrusion business

Plastic Extrusion Plastic extrusion manufacturer

Plastic Extrusion & Plastic extrusion manufacturer - process and functionality

A extrusion of plastic materials is an industrial process. fabricante de extrusão de plástico e extrusão de plástico 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.

Plastic Extrusion Plastic extrusion manufacturer

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.

 

A extrusão é uma técnica de processamento de plásticos que permite a criação de produtos de seção constante. Tal como:

  • Tubos
  • Varas
  • pratos e
  • Vários tipos de seções de plástico.

Sua característica é a de criar objetos com grande versatilidade.

As primeiras tentativas de procedimentos de extrusão datam do final do século XIX. Mas somente no final da Segunda Guerra Mundial houve um aumento real desse tipo de técnica.

História do processo de extrusão

Extrusão de plástico e fabricante de extrusão de plástico experimentou um boom mundial no século XX. A extrusão de plásticos se consolidou como um importante elemento processual para a produção de artigos termoplásticos.

A fabricante de extrusão de plástico e extrusão de plástico é usada com materiais metálicos. Por exemplo,

  • Aço
  • Alumínio
  • Lead
  • 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.

Como funciona Extrusão de plástico e fabricante de extrusão de plásticowork?

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:

  1. Extrusão de plástico e fabricante de extrusão de plásticoheatsthe plastic material
  2. subsequently the shape is given by compression through the matrix
  3. The plastic is finally subjected to a cooling-consolidation process.

Plastic extrusion Como: what it consists of

Comecemos respondendo à questão principal “o que is the extrusion of plastic materials?".

 

Por este termo entendemos um procedimento que tem por objetivo deformar o material plástico para criar produtos com seção constante .

O que o  Extrusão de plástico e fabricante de extrusão de plásticoprocesso  consistem  de

 

Vamos ver juntos. O conceito básico é bastante simples: os grânulos de plástico entram em uma matriz  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.

fabricante de extrusão de plástico e extrusão de plástico 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. Extrusão de plástico e fabricante de extrusão de plásticouses 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
Extrudable materials

The extrusion is used for a variety of materials outside of plastic processing, e.g. B. for:

  • Aluminium
  • Rubber
  • 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, Extrusão de plástico e fabricante de extrusão de plásticomakes extruders.

They are called high-speed machines. They reach speeds of up to 1500 revolutions per minute.

Different fabricante de extrusão de plástico e extrusão de plástico process principles for extruders

Extruders are generally divided into two process principles:

  1. The processing and
  2. 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 fabricante de extrusão de plástico e extrusão de plástico technology is still similar today. Although the technology is constantly evolving.

Hoje, as extrusoras de plástico são multifuncionais digitais com as quais até os perfis mais complexos podem ser produzidos rapidamente. Eles são de alta qualidade e reproduzidos de forma confiável.

Extrusão versus moldagem por injeção - quais são as diferenças?

Além da moldagem por injeção, a extrusão se estabeleceu para a produção de produtos plásticos termoplásticos. Ambos os métodos oferecem certas vantagens dependendo dos requisitos.

Gostaríamos de descrever brevemente as diferenças mais importantes - especialmente no que diz respeito aos requisitos da engenharia elétrica.

5 erros comuns sobre fabricante de extrusão de plástico e extrusão de plástico

Em muitos projetos, surge a questão de qual método deve ser usado para fabricar componentes de plástico para aplicações de engenharia elétrica. Aqui, frequentemente, percebemos que os gerentes de projeto decidem contra o processo de extrusão com base em preconceitos. Portanto, queremos esclarecer alguns erros:

Metal Stamping manufacturers

Falácia 1: “A extrusão de plástico não é tão precisa quanto a moldagem por injeção.”

Nosso processo de extrusão especialmente desenvolvido permite precisão e qualidade de superfície tão boas quanto o processo de moldagem por injeção com ferramentas de alto desempenho.

 

Erro 2: “A extrusão de plástico é mais cara do que a moldagem por injeção.”

Pelo contrário: por ser um processo contínuo, a extrusão é ainda mais barata do que a moldagem por injeção, principalmente para quantidades maiores. Depois de configurada corretamente, a qualidade é continuamente alta. O esforço de cuidado é reduzido.

 

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:

  • Plates
  • Profiles
  • Bars or tubes.

This process is used for metallic materials. Such as:

  • Copper
  • Lead
  • 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. fabricante de extrusão de plástico e extrusão de plástico 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.

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