1. What is the reason that the heat sealing of the bag making machine
does not completely cause the leakage or deterioration of the contents?
The reason is that the fouling resistance of the film is poor, mainly because the resin used in the inner seal is not suitable.
Countermeasure: the film with good heat resistance and sealing
resistance is adopted. Generally speaking, LDPE has moderate
anti-pollution heat sealing, EVA has good anti-pollution heat sealing
when VA content is high, LDPE also has good anti-pollution heat sealing,
ionic resin and metallocene polymer have excellent anti-pollution heat
2. How can plastic bag making machine
be crisp and brittle?
Reasons: (1) Excessive heat sealing temperature; (2) Excessive pressure;
(3) Excessive heat sealing time; (4) Too sharp edge of the upper seal
or PTFE wrapped damage; (5) Overhard silicone rubber at the bottom seal;
(6) In the process of compounding and aging, part of the adhesive
penetrates into the film. Because of the influence of adhesive
penetration, the toughness (impact resistance) decreases and the
brittleness increases; (7) After cooling and placing, the heat sealing
strength of plastic composite bags increases, but also tends to become
(1) According to the heat sealing characteristics of the inner sealing
material, the suitable processing temperature, pressure and heat sealing
time are selected.
(2) Improve the surface state of the upper heat sealing knife, so that the surface of the sealing device is smooth.
(3) Coated with polytetrafluoroethylene;
(4) Choose suitable silicone rubber pad.
3. The principle of non woven bag making machine
is as follows:non woven bag making machine
uses ultrasonic welding, needle and
thread free, eliminating the trouble of frequent needle change, no
traditional thread stitching broken joint, but also for textiles neat
local shearing and sealing. At the same time, the stitching also plays a
decorative role, strong adhesive force, can achieve waterproof effect,
clear embossing, surface more with three-dimensional relief effect, fast
working speed, good product effect more high-grade beauty; quality
assurance.non woven bag making machine
mainly refers to environmental
protection bag machine, namely non-woven bag machine, the main feature
is environmental protection, and can be used many times.
4. The characteristics of the bag making machine
are as follows:
(1) Low cost, 5 to 6 times faster than traditional machine, and high efficiency.
(2) Using ultrasonic and special steel wheel processing, the sealing
edge does not crack, does not damage the fabric edge, and there is no
wool edge, crimping phenomenon.
(3) No preheating is required and continuous operation is required.
(4) Simple operation, and the traditional sewing machine operation
method is not much different, ordinary sewing machine can operate.
(5) Using special alloy steel to make flower wheel mould, we can develop
all kinds of complicated flower pattern according to customer's
requirement; welding head is wear-resistant and has long service life,
pattern disassembly is convenient and easy, eccentric adjustment,
flexible, fast and high level.