Plastic injection molding has become an indispensable part of the plastics industry's production processes and has been an important part of Skaza's manufacturing process for many years now. The fact is that plastic injection molding has many crucial benefits that bring important advancements in the field of plastics manufacturing, such as cost-effective, high-quality production, among others. Let's take a look at two key questions: what is plastic injection molding, and how does Skaza use it to provide our clients with the best possible results?
What Is Plastic Injection Molding?
Plastic injection molding is basically a process in which plastic pellets are first melted and then, once they become malleable enough, injected at pressure into a mold. The plastic then solidifies and becomes the final product. Plastic injection molding is most commonly used in mass-production processes, especially when the same part must be created repeatedly. Injection molding can be used to make various widely used products and has significantly changed the field of plastics manufacturing.
The History of Plastic Injection Molding
When thinking of the great inventions that changed the course of history, we rarely think about things such as plastic production techniques, including plastic injection molding. But the fact is that the world we live in, the goods and tools we use every day would not be possible without it. The invention of plastic injection molding has changed the plastics industry as well as significantly improved and diversified the possibilities for the design and application of plastics.
American brothers John and Isaiah Hyatt are known as the pioneers of injection molding processes. They patented the very first injection molding machine back in 1872. A first, this machine was used to mold buttons, combs and similar items. This represented an important milestone in the industrial revolution, and the plastics manufacturing industry quickly took off after that.
In the decades that followed, various inventors from all over the world contributed their share towards further developing the plastic injection molding process.
When many popular thermoplastics, such as polyolefins, polystyrene and polyvinyl chloride, were invented in the 1930s, plastic injection molding processes took off. Later on, after WWII, plastics filled the gap of material shortages in a number of industries, and plastic production spread over the entire world.
What Are the Main Benefits of Plastic Injection Molding?
When speaking about what is plastic injection molding, it is important to highlight that it offers a number of benefits, the first one being the low cost of production after the initial cost of setting things up. The price per unit during the process of injection molding is extremely low compared to other manufacturing techniques and can further drop as more and more parts are produced. This enables us to manufacture high-quality products at a low cost, thus ensuring high profits for our clients. The process of plastic injection molding, once set up, is also very fast, making it possible to create new products quickly and without delays.
Another important benefit is that the scrap rates are relatively low with injection molding. This is crucial not only from the cost perspective, but also because it is more environmentally friendly. Apart from that, injection molding is also a very reliable and repeatable process, which means that all further parts are practically identical to the first produced part. This helps ensure brand consistency and part reliability, especially in high-volume production.
Are There Any Downsides to Plastic Injection Molding?
When speaking about what is plastic injection molding, we must note that it, like any other process, also has some downsides you should consider when making the final decision. The first and most important downside is that the upfront costs can be very high, which is why plastic injection molding is not the best choice for smaller production runs. Also, because the costs of setup are so high, any minor mistake in this part of the process can significantly increase the entire production costs. Therefore, avoiding any design errors is crucial, and it is important to know that any design changes can also cause high additional costs.
Another challenge with plastic injection molding is also that the initial setup time can be quite long, and there's also the fact that the process itself has some design limitations, so it is not suitable for all products. However, by using the most advanced technologies and combining multiple manufacturing techniques, we are usually able to overcome most of these issues.
How Does Skaza Use Plastic Injection Molding?
At Skaza, we are experts in contract manufacturing of a number of different products in various industries, such as electro, medical, furniture and many others. We specialize in overmolding and multi-injection technology (2K and 3K), using the most advanced techniques to provide our clients with the best possible results.
Our vast and modernly equipped machine park features machines with clamping forces from 50T to 1000T and shot capacity up to 7300 ccm. Our technological capabilities, combined with our innovative thinking and continuous efforts to improve our production processes, make us an excellent partner for your most demanding requirements.
Looking for a partner who will manage high demands in manufacturing plastic products? Get a quote and become our partner.