2021年1月23日发(作者：炼丹术)
Defective products investigation report

The description of defective products
On
Jan.
6
th
2013,
809
cartons
(405000
pieces)
of
plastic
bags
were
sending
to
***Shanghai
company,
among
which
407
cartons
(244200
pieces)
of
plastic
bags
were small size and the rest were large size. The plastic bags have reached ***Japan
company. Customer has now detected 120 pieces of defective products with red ink
on the white ile, they have detected 1/3 serious plate shifting defective
products
when
spot-checking
(the
detailed
quantity
is
unknown
for
products
were
without fully inspection) :
The
first
problem:
the
defective
products
with
red
ink
on
the
white
edge;
the
second problem: serious plate shifting defective products.

The analysis about cause of defective products
1. The cause of the first problem:
The situation that the ink of the other colors sticks to the white edge will show up
in the process of printing because of four-color overlay gravure printing. But normally
the operators will pick them out when making bags.
The
bags
with
ink
had
not
been
picked
out
because
of
the
ignorance
of
bag
cutting operators and checkers.
2. The cause of the second problem:
The
plate
shifting
emerges
in
the
process
of
printing
because
of
four-color
overlay
gravure
printing
and
the
extremely
small
font.
Our
operators
and
checkers
will
pick
out
the
serious
plate
shifting
bags
when
bag-making.
But
since
we
donot
check one by one, some of them will arise in the mass production.

Improvement measures
For the first problem:
We will improve the demand on bag-making operators and checkers to pick out