Plastic Bottles For Sale

Custom Plastic Bottle Manufacturers, Custom Pet Bottles, Pet Bottles suppliers.
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Preform depends largely on the merits of the merits of PET materials

should be selected easy to blow, easy stereotypes of material, and

develop a reasonable preform molding process. Experimental results show

that the viscosity of the same material molding PET preforms, imported

raw materials than domestic Yi blow molding; and the same batch of

preforms, production dates are different, the blow molding process may

also be quite different. Preform the merits of the decision to ease the

blow molding process, the requirements of the preform is pure,

transparent, free of impurities, the same color, length and injection

points around coronatines appropriate.

2.2 heating

Preform is heated by the heating oven to complete, the temperature is set

manually, automatically adjusted. Emit far infrared oven heated by the

far infrared radiation preform tube, the bottom of the oven fan heat

circulation, so the oven temperature uniformity. Preform in the oven at

the same time moves forward rotation, so preform wall heat evenly.

Lamps arranged in an oven from top to bottom general was "zone" shape,

more than two and less in the middle. Heat the oven by opening the number

of lamps, the overall temperature setting, and each section was heated

oven power than joint control. The lamp is turned in conjunction with the

pre-blowing to be adjusted.

To play a better role oven, adjust its height, the cooling plate, etc. is

very important, if adjusted properly, prone to swelling during blow

bottle (bottle large), a hard head and neck (neck material will not pull

out), etc. defects.

2.3 pre-blow

Pre-blowing is a two-step blow molding method is a very important step,

it refers to the stretch blow molding process, while the rod drop pre-

blowing beginning to make preforms in its shape. This step is a pre-blow

position, pre-blowing pressure and gas flow rate are three important

technological factors.

Pre-blowing shape determines the difficulty of the merits of the

performance of the bottle blow molding process of the pros and cons.

Pre-blowing normal spindle shape, unusual, there are sub-bell-like,

handle-shaped and so on, as shown in FIG. Causes abnormal shapes have

local heating improper or inadequate pre-blowing pressure gas flow rate,

etc., and the pre-blowing the size depends on the pre-blow pressure and

pre-blow position. In the production of the entire equipment to maintain

all pre-blowing uniform size and shape, if the difference will have to

look for specific reasons, can adjust the heating or pre-blow process

according to the pre-blowing situation.