
Nowadays, many customers are constantly improving their proactive production
process, and the requirements for packaging bag manufacturers will become
increasingly strict. There are two common production processes for organ bags,
one is a medium sealed organ bag, and the other is a four sided sealed organ
bag. These two processes have a common control point that needs to be paid
attention to: organ position, while organ bags are derived from many other
types, such as bottom organ bags and octagonal sealed organ bags.
Among many packaging bag types, the inner space of the middle sealed organ
bag is larger than that of other three sided sealed bag types, and it can save
costs, so it is very popular among customers.
Organ bags are generally used in the fields of clothing, hardware,
electronics, food, and daily necessities packaging, and can be said to be very
widely used. For packaging with contents below 300g, there are basically no
major issues with the production of organ bags. Whether it is the materials used
or the production process, the enterprise has applied them very maturely.
However, for packaging materials above 300g, especially powder and small
granular content, it is more challenging for soft packaging manufacturers. This
type of content is also a significant challenge for customers' automatic
packaging equipment.
1、 Common issues with organ positions
There is a stepped position at the intersection of the organ position and the
horizontal sealing position, that is, there are only two layers of material heat
sealing on both sides of the organ in the horizontal sealing position, while the
horizontal sealing edge of the organ position will have four layers of film that
need to be heat sealed. Therefore, a stepped intersection sealing edge will
appear at this position. The mold for heat sealing is basically on a horizontal
plane, and often the bag breaks open from here.
Professional flexible packaging manufacturers have come up with many
solutions to address the issue of easy bag breakage at the intersection of the
horizontal seal and the organ, which can now effectively reduce the bag breakage
rate of the organ.
2、 Common solutions
1. Improve raw and auxiliary materials
The main improvement in this area is to improve the physical properties of
the raw materials, such as selecting materials on the inner substrate that are
resistant to brittle cracking, stretching, wrinkling, increased flexibility,
increased toughness, and improved physical and mechanical properties, to reduce
the probability of organ line breakage during production. Alternatively,
improvement can be achieved by increasing the material thickness. At the same
time, adhesive with good toughness can also be used to enhance wrinkle
resistance and enhance the resistance to breakage and rubbing of packaging.
2. Improve material structure
Organ bags generally choose structures such as BOPP/CPP, PET/PE, BOPP/PE,
PA/PE, PET/AL/PE, PA/AL/PE, PET/PA/PE, etc. When a certain structure is
relatively weak, it is possible to replace it with a material with better
physical properties, or increase the number of structural layers to improve the
strength of the entire bag. Considering the mechanical properties such as fabric
bending resistance and mechanical stretching, NY is superior to PET and PET is
superior to BOPP. Of course, if NY is used instead of PET, it will definitely
increase costs. We can also improve the material properties of the organ bag by
increasing the number of structural layers. This is also a good approach, but
the cost will increase significantly. When increasing the number of material
layers, it is important to be very careful and carefully evaluate the
performance changes caused by adding materials.
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