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What is a blow molding machine?

by:Yosion Machinery     2022-05-03
A bottle blowing machine refers to a machine that blows bottles. A very simple explanation is a machine that can blow plastic particles (soften into liquid) or finished preforms into bottles through certain technological means. The bottle blowing machine is convenient and fast, and has a large amount of molding. After its appearance, it replaced most of the manual blowing machines and was adopted by most beverage companies. Blow molding machine is a kind of equipment that makes plastic pellets into hollow containers through blow molding process. At present, the more common models include hollow extrusion blowing machines that use PP and PE for one molding, and PET, PC or PP for two moldings. The injection stretch blow molding machine, as well as the newly developed multi-layer hollow extrusion blow molding and stretch blow molding. At present, most of the blow molding machines are still two-step blow molding machines, that is, the plastic raw materials must be made into preforms and then blown. Nowadays, environmentally friendly plastics made of PET are commonly used. Blow molding machine: After the liquid plastic is sprayed out, the wind blowing from the machine is used to blow the plastic body to a certain shape of the cavity to make a product. This machine is called a blow molding machine. It is also a type of blow molding machine, that is, a hydraulic blow molding machine. The tubular plastic parison obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold while it is hot (or heated to a softened state), and compressed air is introduced into the parison immediately after closing the mold to blow the plastic parison. It expands and sticks closely to the inner wall of the mold, and after cooling and demoulding, various hollow products are obtained.
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