Plastic manufacturing process play an important role to re-cycled waste Plastics materials. Plastic containers are very useful for packaging to various industries. Cosmetics packaging requires plastic jars for make-up products and skincare products. Plastic bottles are used for Pharmaceutical packaging to hold vitamins, tablets, capsules and other medicines. Food and beverage packaging also include use of all sorts of plastic containers, such as plastic bottles for water,milk bottles and plastic jars for use as deli containers. Therefore the importance of plastic packaging has been increased day by day. Below I am going to explain how plastic containers are made.
Plastic bottle suppliers have several methods to create plastic containers at their disposal. The most popular methods for plastic manufacturing process are extrusion blow molding, injection blow molding, stretch blow molding, injection molding, and co-extrusion. It can helps to choose the right company when you are looking for a plastic container suppliers. Extrusion blow molding is a way to make high-performance and high reliability plastic containers with a low weight and cost. First, round hollow tube (parison) is formed by an extruder. A mold cavity composed of two halves closes around the parison and punches off one end. Then, compressed air shapes the container, it cools, and excess plastic is trimmed.
Injection blow molding is performed in three important stages. First, melted plastic is injected into a mold to produce a parison. Compressed air then blows through a core pin to expand the mold. Finally, the container is transferred to a third station for ejection. Finally, you will get end product.Stretch blow molding is used to make stiff containers which are low in weight and are low in cost . It is often used for carbonated beverage plastic containers. It involves stretching a parison during blow molding to orient and align the molecules. Injection molding is used to create wide mouth containers such as plastic jars, tubs, and vials. Material is injected into a cavity where pressure forces are resin to conform to the mold body. These plastic containers are then produced without scrap.
Co-extrusion is the latest technique for plastic manufacturing process. It involves sandwiching various plastic resins together with tie layers to produce bottles with barrier and heat-stable qualities suitable for use with hot-filled, hermetically sealed food products. Possible platic products include: juices, sauces, jams, toppings, mayonnaise, and pickled products