Omar Khalid
Plastic is everywhere, from our phones to our cars, but not everyone knows how it's made. There are several plastic processing techniques, each with its advantages and disadvantages, suited to specific applications. The most common method is injection moulding, which is fast, efficient, and perfect for high-volume production. Other methods include rotational moulding, blow moulding, calendering, and extrusion. Each technique has its unique pros and cons, and choosing the right one depends on cost, precision, production volume, and product design.
| Characteristics | Values |
|---|---|
| Training Providers | Paulson Training Programs, Plastics Training Academy at Penn State Behrend, Plastics Engineering Technology Certificate Program |
| Course Format | Online, short-term workshops, seminars, classes |
| Course Content | Injection moulding, electron theory, static electricity, magnetism, polymer basics, material flow properties, viscosity-shear rate curve, decoupled molding techniques, data analysis, interpretation, tooling, rotational moulding, vacuum casting, polyurethane vacuum casting, plastic extrusion, calendering, compression moulding, blow moulding, polymerisation, monomers, plasticizers, dyes, flame-retardant chemicals |
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Injection moulding
To learn more about injection moulding, there are various online and in-person resources available. For example, RJG, Inc. offers online injection moulding training with self-paced eLearning courses and virtual instructor-led training. They provide interactive activities, quizzes, and real-world tools to enhance your learning experience. Paulson Training Programs is another well-known provider of injection moulding training. They offer interactive online training, seminars, and custom on-site solutions. Their approach focuses on the "4 plastic variables": heat, flow, pressure, and cooling, helping learners produce better parts efficiently.
Additionally, the Plastics Training Academy at Penn State Behrend offers short-term workshops, seminars, and classes covering the latest design and processing techniques. These programs provide hands-on learning in the country's largest plastics processing lab, allowing participants to interact with industry professionals.
Online resources like PolymerAcademy also provide valuable information on plastic processing techniques, including injection moulding. They explain the step-by-step process, from placing plastic granules into a hopper to ejecting the finished product from the mould.
By utilising these training programs and resources, individuals can gain a comprehensive understanding of injection moulding and develop skills applicable to the plastics industry.
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Compression moulding
The process involves placing a charge in a mould cavity, usually made of steel or aluminium, and closing the mould. Pressure is then applied to squeeze the material so that it fills the mould cavity. The mould is then heated under pressure to cure the material. The amount of temperature, pressure, and time will depend on the desired outcome.
There are two main stages to the compression moulding process: plastication, where the material is compressed and heated, and flow, which commences once the yield stress is exceeded, allowing the mould to fill. Parameters like material quantity, pressure, temperature, and cure time must be controlled.
If you're interested in learning more about compression moulding and other plastic techniques, the Plastics Training Academy at Penn State Behrend offers short-term workshops, seminars, and classes that cover the latest design and processing techniques. Paulson Training Programs also offer comprehensive, web-based, interactive online training solutions for anyone involved in the plastics industry.
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Blow moulding
The blow moulding process starts by forming softened, melted plastic into a tube-like structure, known as a parison, using an extruding machine. The parison is then inserted into a mould and clamped into place. Compressed air is then blown into the parison, forcing it to conform to the mould. Once the plastic has cooled and hardened, it is ejected from the mould. The final product is then refined through trimming, and readied for subsequent processing stages.
There are three main types of blow moulding: extrusion blow moulding, injection blow moulding, and injection stretch blow moulding. Extrusion blow moulding is the most common type, used in around 75% of applications. It involves using a parison, which is shaped by the plastic being melted to fit the mould and then hollowed out by compressed air. Injection blow moulding uses a preformed plastic shape instead of a parison, which is supported by a metal core pin and hollowed out by compressed air. Injection stretch blow moulding is a modification of injection blow moulding, where the preform is stretched to a specific length before being inflated to shape the final product.
If you want to learn more about blow moulding and other plastic processing techniques, there are several training options available. The Plastics Training Academy at Penn State Behrend offers short-term workshops, seminars, and classes that cover the latest design and processing techniques. Paulson Training Programs also offer comprehensive online training solutions for the plastics industry, including a course on injection moulding.
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Plastic extrusion
There are several training programs available for those interested in learning about plastic extrusion and other plastic processing techniques. Penn State Behrend's Plastics Training Academy offers short-term workshops, seminars, and classes that cover the latest design and processing techniques. These programs provide access to experienced professionals and a large plastics processing lab for hands-on learning.
Additionally, Paulson Training Programs offer interactive online and on-site training solutions for the plastics industry. Their extrusion technology training covers a range of topics, including the types of plastics used for extrusion, extruder controls, safety procedures, and troubleshooting. They also provide a comprehensive introduction to plastics processing for new employees, covering essential safety principles, quality control, and common part defects.
Another option for online training is Routsis Training, which offers courses specifically focused on extrusion personnel. These courses teach participants about polymer properties, techniques for handling and preparing plastic materials, and essential skills such as reading engineering drawings.
Overall, there are several resources available for those interested in learning about plastic extrusion and other plastic processing techniques. These programs offer a combination of theoretical knowledge and practical skills necessary for a career in the plastics industry.
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Online courses
There are a variety of online courses available for those interested in learning about plastic technology. These courses are designed to provide a comprehensive understanding of the plastic injection moulding industry and its various applications.
One notable provider of online plastic training courses is the AIM Institute. They offer a range of courses, including an introduction to the foundational knowledge of the five key systems in injection moulding, an overview of polymer structures, and the impact of molecular weight on material properties. AIM Institute also offers a course on advanced features and complex analyses available in Moldflow Insight, building upon fundamental and advanced flow courses.
Penn State Behrend also offers a ten-week online course providing an introduction to plastics engineering technology. This course covers fundamental concepts such as the behaviour of thermoplastic materials, the effects of molecular weight on polymers, and the unique features of plastic parts that influence manufacturing processes.
Udemy offers a course on the fundamentals of plastics and polymers, covering polymer chemistry, properties, processing, testing, and applications. This course is suitable for those seeking additional learning assistance, entrepreneurs venturing into the plastics industry, or anyone curious about plastics and polymers.
Additionally, Paulson Training Programs provide interactive online training solutions for various sectors within the plastics industry. They offer courses on injection moulding, extrusion, blow moulding, and Thermoforming, among others. Paulson's courses are designed to improve quality, production, and profits by providing efficient and proven training systems.
Lastly, Routsis Training offers a comprehensive array of online plastics training topics, including injection moulding, blow moulding, and multi-language courses. Their programs are customizable and constantly updated to incorporate the latest advancements in the field.
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Frequently asked questions
Common plastic manufacturing techniques include injection molding, blow molding, rotational molding, and compression molding.
Injection molding is a high-volume manufacturing method where molten plastic is injected into a mold, cooled, and ejected as a finished part.
Blow molding involves inflating a molten plastic tube (parison) inside a mold until it takes the shape of the cavity. This technique is commonly used for creating plastic bottles and containers.
You can learn more about plastic manufacturing techniques by visiting websites such as Polymer Academy, Star Rapid, Plastfabworks, and Kemal Manufacturing. These websites provide guides and detailed explanations of various plastic manufacturing techniques.
