These preforms already have the bottle cap threads and are small and easy to transport.
Pet bottle cap manufacturing process.
Plastic bottle manufacturing process.
Plastic pellets are plasticized in the barrel of an injection molding machine where the plastic is melted by heat and the shearing action of a feed screw.
Diethylene glycol and acetaldehyde a large amount of acetaldehyde in pet can posibly affect the taste when you drink out of the cap bottle must.
Polyethylene tetra phthalate is a polymer that is formed by combining two monomers called modified ethylene glycol and purified terephthalic acid.
Pet bottle production raw material.
Pet bottle production process.
Most common example of this is the common beverages such as coke bottles.
The pet granulate is first melted at about 280 c and processed into what are called preforms.
The first stage of a typical 2 step reheat and blow machine rbm bottle manufacturing process is injection molding.
Most caps you can feel them as a bit stiff are made of hdpe high density polyethylene.
The raw material used in the manufacturing of pet bottles preforms is polyethylene terephthalate.
Polyethylene terephthalate pet pet is polymerized to create long molecular chains two impurities during this proces.