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Introduction to bottle blowing machine
Bottle blowing machine is a kind of equipment that can make plastic particles into hollow containers through blow molding process. The more common models include the hollow extrusion blowing machine that uses PP and PE for one-time molding, the bottle blowing machine that uses PET, PC or PP for twice molding, and the newly developed multi-layer hollow extrusion blowing and stretch blowing.
Most bottle blowing machines are still two-step bottle blowing machines, that is, plastic raw materials must be made into bottle embryo before blowing. Nowadays, PET environment-friendly plastics are commonly used. Blow molding machine: after spraying liquid plastic, the machine uses the wind force to blow the plastic body to a certain shape of mold cavity to make products. This machine is called blow molding machine. It is also a kind of bottle blowing machine, namely hydraulic bottle blowing machine.
The tubular plastic parison produced by extrusion or injection molding of thermoplastic resin is placed in the split die while it is hot (or heated to a softened state), and compressed air is introduced into the parison immediately after the die is closed, so that the plastic parison is blown and stuck to the inner wall of the die. After cooling and demoulding, various hollow products are obtained.
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