Glass bottle shoulder defect

Glass bottle shoulder defect,


( 1) Shoulder to crack. The shoulder is surface crack. Is expected to drop temperature is too high or too low. At the beginning of the
type mold or molding die opening is not smooth.
are blowing air pressure is too large.
forming die and die base mismatch.
molding mold clamp badly worn.
molding mold temperature is too high.
( 2) Thin shoulder. Partial or full thinner bottle shoulders.
is expected to drop temperature on the high side or uneven.
gob shape too long or too short.
blanking is not straight.
at the beginning of mould is too hot. At the beginning of the
mould with too much oil.
are blowing started too late.
blowing pressure small or short time.
( 3) Lack of bottle shoulder, Shoulder, concave down arms) 。 Bottle shoulder without fully formed.
is expected to drop temperature is too high or too low.
drop shape is bad or thin material, the friction material on most.
is blowing or inappropriate position of QiTou are blowing air pressure is too small.
are blowing time too short.
it blow air pressure is too big or too long, initial shape is too hard.
heavy hot time. At the beginning of the
type mold or molding die too cold