Because the glass bottle has good sealing performance and barrier performance, it can maintain the The glass thickness of the bottle body is not uniform, but the glass thickness of the bottle body is one of the exceptions required by some manufacturers. Why is it that the glass thickness of the bottle body is not uniform?
Glass bottle shoulder: part of the position of the glass bottle is very thin, which can not meet the required model standard. The defect of the thick wall tube of the bottle shoulder is mostly caused by the fact that the relative part of the raw material embryo is not properly frozen or moistened, resulting in too high temperature or too long start time of forward blowing inspection, resulting in excessive stretching and bending of the raw material embryo.
Thin glass bottle body: the key to this disadvantage is that the thickness of the glass bottle body is a part of the thickness of the glass bottle, or it does not meet the standard of the standard thin-walled model. The reason is that usually, the reheating time of the prototype raw material embryo is too long, the start time of the positive blowing inspection is delayed, the wall thickness of the glass bottle can also be uneven, and the wrong operation of the industrial architectural coating of the mold leads to the very dirty mold, and the temperature difference at each position of the molding mold is particularly large, Improper cooling of forming mould.
Thin glass bottle bottom: the thickness of glass bottle bottom cannot meet the standard model standard, the initial contact time with the mold is too long or the reheating time is insufficient, the temperature of preform is too low, and the glass containing reinforced rubber does not diffuse well; It is highly likely that the blowing inspection starts early, or the blowing time is too long, the pre weight heat of the bottle is insufficient, the positive blowing inspection starts early, or the positive blowing inspection time is too long, or the timing execution time of the needle (spindle) is inappropriate.