1. Most food packaging bags contain various patterns and characters, which
are completed by heat transfer printing process. At present, most processes are
completed by mechanical equipment. There are few places requiring manual
operation. Insufficient pressure of mechanical equipment may cause problems.
Pressure refers to the force used to print various patterns on food packaging
bags. This force can be large or small. If it is too small, the pattern will not
be clear, and it is easy to fade or fall off. If it is too large, it will lead
to uneven packaging bags, affecting its feel and beauty. If an appropriate
pressure is adjusted, it is the key to production, Different materials and
different patterns of packaging bags use different pressures, which requires
long-term production and testing by operators to obtain accurate values, and
this value is gradually adjusted in the process of using mechanical equipment
the day after tomorrow.
2. If the color is too light, discoloration may occur. The color modulation
is similar to all kinds of inks. If the ink contains a large amount of water, it
will cause the ink concentration to become weak. If the ink becomes weak, the
patterns and characters will not be clear during transfer printing. It is also
common for decolorization to occur when the ink contains water. It is
recommended that you should do as you can when mixing colors. Don't add too much
water to save costs, just add a small amount of water according to the
proportion.
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