National Molding

How Things Are Made Through Plastic Injection Molding?

For more than two centuries, injection mold supplies have revolutionized the way we live. If it wasn’t for the resourceful and creative minds of the scientists and inventors in the manufacturing industry, the things we use in our daily lives wouldn’t exist at all. Life will surely feel different because we have grown so dependent on them, don’t you think?

The plastic injection molding industry is responsible for manufacturing typical things like toys, kitchen utensils, power tools, or gadgets. By now you might be wondering what injection molding is and how it came to be. You’ve come to the right place because we will share to you its history and current mechanisms.

How It All Began

Someone was wondering if there was an easier way of making a set of billiard balls. He began injecting celluloid into circular molds and made a cast. This was how the modern process of plastic injection molding was born and we have John Wesley Hyatt to thank for this.

Although celluloid was discovered way before Hyatt discovered the optimal method of using it, it was already used in making products with bone or ivory-like properties. Soon after that Hyatt felt the need for expanding his business, so he invented the first ever injection molding machine operating with a plunger system. The industry skyrocketed and went on to new heights!

James Hendry came along and gave it a new course. Instead of using the plunger system, he replaced it with an industrial screw. This change in technique actually increased the manufacturing process to tenfold and was embraced almost immediately by plastic belt buckle suppliers.

The Manufacturing Process

It all starts with choosing the right kind of plastic to work with. Some plastic variations are unsafe so a plastic manufacturer should make sure that the finished products are safe for customer use. Most companies use polyvinyl chloride, commonly known as PVC, polystyrene, acrylic, delrin, teflon, or duraflex resin.

It’s important to keep the process environment friendly for both the manufacturers and end users. So how do companies make the most out of it? They recycle plastic. Not only does this method allow multiple usage, it is also easier and cheaper for everyone involved.

Once the perfect raw materials are chosen by a buckle manufacturer USA, the plastic expulsion process can finally commence. First, the resin are loaded into the feed hopper. Then the hopper transfers the resin into the cylinder which heats the raw materials at a temperature of around 400 degrees Fahrenheit. When the cylinder is heated, the screw will put extreme force unto the molten plastic.

The raw materials are filtered from any contaminants through a series of screens, and then pushed out into the die machine. This is the machine responsible for giving the raw materials its specified shape. That’s how a plastic belt buckle takes its special shape, no matter how complex or simple the design is.

If by now you haven’t figured out how the types of belt buckles are customized, you probably have spent most of this time with your eyes closed. After all, they just don’t come out from thin air, do they?

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