Summary:
Bottle blow moulding is a process in which the body and base of a bottle is formed. The neck and thread finish are alr...
Bottle blow moulding is a process in which the body and base of a bottle is formed. The neck and thread finish are already formed in the preform. The blow mould consists of three parts: the preform, the body and base of the bottle, and the base insert. The base insert prevents the walls of the concave container from sliding over the mould halves. Before opening the mould, the base insert is moved vertically out of the way.
Extrusion blow molding
Extrusion blow molding is a process used to create plastic bottles. The process uses a parison, a hollow tube, which is extruded between two halves of a blow mold. Once the parison has reached the desired length, the mold is closed. A rod-like blow pin is then inserted into the neck end of the parison and inflates the parison inside the mold cavity. The bottle then emerges from the mold. Any excess plastic from the neck pinch-off areas is then removed.
Extrusion blow molding is similar to injection blow molding. The main difference between the two processes is the type of mold used. Continuous extrusion blow molding uses one part of the mold and intermittent extrusion uses two different types of molds.
Stretch blow molding
The process of stretch blow molding for bottle production begins with the selection of the bottle's design, including its shape and size. However, the design of the bottle isn't the only consideration. Heat, stretch ratio, and bottle thickness are also important factors to consider. The heat used in the process plays a significant role in shaping the container.
Stretch blow molding for bottle production can handle many shapes. It can produce cylindrical, rectangular, and oval bottles. It can also be used in conjunction with preforms, reducing costs and time.
Injection blow molding
Injection blow molding produces bottles with a variety of characteristics. This method delivers melted plastic to a preform that is blown into the desired shape. The blown air produces a high pressure, resulting in a smooth, uniform shape. It also offers good barrier and optical properties. It is primarily used with polyethylene terephthalate. This process produces a wide variety of bottle sizes, from 1 oz. to 500 ml.
Injection blow molding is similar to extrusion blow molding. The resin is heated and extruded into a parison, or vertical tube, that allows compressed air to pass through it. The parison is then transferred into a blow molding machine. A blow pin is then inserted into the neck section of the bottle and inflated by the air pressure. Once the bottle is cooled, it emerges from the blow mold and exits through a hole in the neck.
Coextrusion blow molding
Blow molding is a process that involves heating and inflating plastic tubes to form a product. These plastic tubes are then used to make bottles, jars, and jugs. The process is suitable for a variety of plastics, including HDPE, PVC, PC, and PP. It is often combined with multi-layer technologies, which improve compatibility between different products.
Coextrusion blow molding is an effective technique for producing multilayer bottles, such as cosmetics. It can produce bottles with different layers and then bonded into a final bottle. These multilayered bottles are ideal for achieving cosmetic effects like a soft matte feel, and they can be molded into the shape of the desired bottle. Additionally, the process can also extend the barrier properties of a bottle.
Super Vented Mold
The Super Vented Bottle Blowing Mold is an innovative and efficient tool for producing bottles. It can produce up to 2,000 bottles per hour, and offers a number of benefits over conventional blow moulds. For instance, the mold's venting system is more energy efficient. It's also compatible with 100% recycled materials, which is an important factor considering current legislation and company requirements.
