How Plastic Tubes Are Made

Plastic tubing is used in just about every industry you can think of including cosmetics, food, and pharmaceutical. The process of making plastic tubes is called extrusion which is a process that takes raw hard plastic and melts it into a liquid. The melted plastic is then is formed into a solid shape through a mold. Molds are created by forcing the liquid through a die, which takes the liquid and creates a solid shape.

The process starts out at what is called the feed zone, which consists of the hard plastic materials being fed into a hot barrel that consistently rotates, never letting the plastic settle. The next phase is called the melting zone, which takes the solid rotating plastic and melts it into a liquid form. During the melting zone, the plastic materials are melted by the energy generated by the three different heating areas that slowly increase the temperature in the barrel. These temperatures can sometimes reach up to 400-530 degrees Fahrenheit. Temperature plays a crucial role in the entire process and you want to ensure you properly maintain optimal consistent temperature to produce the highest level quality plastic tubes. At this time the plastic is gradually heated and then pushed through the barrel before it goes through a screen, which is similar to a strainer, to catch any contaminants or debris left over and removes them.

Custom Pharmaceutical Tube

After, the plastic is then forced into the die (the mold), which gives the melted plastic its overall shape and design when it cools. It’s important that melted plastic flows evenly and smoothly. If the plastic doesn’t melt consistently the same temperature it can warp the mold of the plastic tubes or creates unusual textures when it has cooled. After the plastic tubes have been put through the die they are then moved to the cavity to cool and harden. The plastic tube molds are cooled by pulling the plastic through a water bath. This process can take time as the plastic tends to hold on to heat for longer periods of time than other materials that are used during this process. In the next phase, the water bath is started by a structure called the ‘vacuum’ which keeps the hardened plastic from collapsing and warping as it sits in the water bath to cool. The extrusion process of our plastic tubes has been known to be a high-volume process that forms many plastic shapes and sizes for all industries to fit specific company needs. It is also a more economical option for businesses to use as it can produce a multitude of plastic tubes at once for a discounted price.

Top Tubes goes above and beyond when designing, creating and manufacturing their plastic tubes to ensure that they are free from any flaws, warped plastic or any other deformities. Top Tubes prides themselves on supplying some of the top hair care, cosmetic and food companies at large grocery and convenience stores all over the world. If you are interested in learning more about how Top Tubes manufactures and creates plastic laminated tubes, visit our website at or give our customer service a call- we are always happy to answer any of your questions. 

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