What equipment is used in blow molding?

What equipment is used in blow molding?

The parison is a tube-like piece of plastic with a hole in one end through which compressed air can pass. The parison is then clamped into a mold and air is blown into it. The air pressure then pushes the plastic out to match the mold. Once the plastic has cooled and hardened the mold opens and the part is ejected.

How much does a blow molding machine cost?

A single cavity, extrusion blow mold suitable to produce up to 100M units per year may cost as little as $3,000. An eight cavity, extrusion blow mold with automatic detabbing equipment may cost as much as $25,000 but may generate sufficient cost savings to return the investment within a short period.

What is blow moulding step by step?

The process includes the following steps: Plastic pellets are fed into the machine via a hopper or screw depending on the machine. Plastic melts and then gets shaped into a parison, which looks like a tube with a hole at one end. Clamped in place inside the mold. Compressed air inflates the parison.

What is blowing machine?

Definition of blowing machine : a machine for blowing bottles and other hollow glassware.

What is extruder blowing machine?

Extrusion blow molding is recognizable by the hollow tube that is extruded from the machine to create the parts. This tube is referred to as a parison. A hollow mold then closes around the parison and cycles to the blow station.

What type of product is produced in blow molding?

Blow Molding Machines can produce households and detergent bottles, laundry bottles, liquid soap plastic bottles containers and lotion bottles. Most examples of Blow Molding in households are made from a wide range of materials including PC, PET, PP and HDPE.

What is the most common type of blow molding process?

Extrusion Blow Molding
Extrusion Blow Molding Perhaps the most common type of blow molding process is extrusion. With extrusion blow molding, plastic is heated until it turns from a solid state to a liquid state. The liquefied plastic is then forced into an extrusion machine.

Why do we use blow moulding?

Injection blow moulding is used for the Production of hollow objects in large quantities. The main applications are bottles, jars and other containers. The Injection blow moulding process produces bottles of superior visual and dimensional quality compared to extrusion blow moulding.

What is blow moulding used for?

What are the two different types of blow molding methods?

There are three types of blow molding processes:

• Injection Blow Molding. In injection blow molding, a blow or core rod is used throughout the process.
• Extrusion Blow Molding. Extrusion blow molding can be continuous or intermittent.
• Injection Stretch Blow Molding.

What are the features of blow molding?

2.4 Characteristics For Blow Moulding

• High impact strength.
• Low temperature toughness.
• Excellent resistance to chemicals.
• Good electrical insulating properties.
• Poor ultraviolet resistance.

What is a blow moulder machine?

With blow molding, a machine blows air across heated plastic that’s placed on top of a mold cavity. The air forces the heated plastic to expand across the interior walls of the mold cavity.

What are the three main types of blow molding processes?

Blow molding is a manufacturing process for forming and joining together hollow plastic parts. In general, there are three main types of blow molding: extrusion blow molding, injection blow molding (one stage), and injection stretch blow molding (two stages).

How does a blowing machine work?

The neck ending catches and holds while the bottom end pinches closed as the tube closes. A blow-pin is interested into the neck end of the hot parison while compressed air inflates it to the shape of the mold cavity. Simultaneously, the process creates the threaded opening.