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Tag Archives: extrusion blow molding

How Extrusion Blow Molding Works

Extrusion Blow Molding ProductsExtrusion blow molding is a method used to make plastic items such as carrying cases. A melted resin is poured into a mold and forms a predetermined shape. The shape of the item is determined by the shape of the mold. A solid shape forms when the extrusion cools. It is a complicated process and usually requires professional extrusion blow molding services.

How Plastic Extrusion Works

The plastics extrusion process involves a resin being added into a top mounted hopper. The resin moves along a track until it reaches the extruder barrel. As the resin nears the barrel, a rotating screw forces the resin into the barrel. The barrel is heated so it will melt the incoming resin. A heating profile sets controlled heat zones to gradually increase the temperature inside the barrel. The zones allow the plastic resin to gradually melt as it travels through the barrel.

Before the resin exits, it is pushed through a screen to remove contaminants. At this point, the resin enters the mold and takes its final shape. The hot plastic must flow evenly into the mold or it will produce a misshapen product. If the resin receives unwanted stress anywhere in the process, the product can warp when it cools. The final step involves cooling the product by pulling the extruder through a water bath.

Consider a Consultation for Your Product

The extrusion process is complicated and requires precision. If you need extrusion blow molding services, then it is important to contact a professional. Inquire about a consultation to get the service you need to create a perfectly shaped product.

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Latest Updates in Extrusion Blow Molding – Benefits & Advantages

The latest technology release in the blow molding industry provides a quality control function to control the crystallinity and barrier properties of PET bottles was announced in a recent article by Plastics Technology. Whether you need plastic bottles or a custom blow molding project, Western Case has the experience, technology, and ability to make it successful.

Extrusion Blow Molding

There are many benefits to using extrusion blow molding as manufacturing for your project. The process is used to create containers, bottles, cases, toys, car parts, and many more items.

During the process, the plastic is melted. Once it is melted, it is shaped into a hollow tube, also known as a parison. This is accomplished by forcing the plastic through a die. The product is blow molded by blowing air into it to inflate the product. After cooling, the product is ejected from the mold.

Advantages of Extruded Blow Molding

There are different types of blow molding processes on the market today. Using extrusion blow molding provides many advantages that include a lower cost for the process. This is one of the reasons our customers choose extrusion blow molding over other types of processes.

However, there are other advantages. At Western Case, we can do short production runs using the extrusion process, we work with less expensive molds, can create different sizes of products, and have a high quality rate with precision.

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