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What should I do if the coffee capsule filling and sealing machine is not tightly sealed?

Sep 01 , 2021

What should I do if the coffee capsule filling and sealing machine is not tightly sealed? There are two cases of lax sealing: ①The sealed part of the packaging bag cannot be sealed; ②Under the pressure of the sealing knife, although the mouth of the bag is sealed, but it is squeezed or torn strongly, and the seal will crack again.


The main reasons for the first type of failure are as follows.
Q) The heat sealing temperature is not enough
Under normal circumstances, when the total thickness of the composite bag lined with OPP is 80 ~ 90pm, the heat sealing temperature should reach 11170~180℃; the total thickness of the composite bag lined with PE is 85
-100pm, the temperature should be controlled at 180~200℃ at this time. As long as the total thickness of the bag is increased, the heat sealing temperature must be correspondingly increased.


(2) The heat sealing speed is too fast
What should I do if the coffee capsule sealing machine is not tightly sealed?
The inability to seal is also related to the speed of the sealer. If the speed is too fast, the sealing part will be transported to the cold pressing part for cooling treatment, and then it can be heated later, naturally it will not reach the heat.
Seal quality requirements.


(3) The pressure of the cold-pressed rubber wheel is not suitable
The upper and lower cold-pressed rubber wheels are one each, and the pressure should be moderate. When adjusting the pressure, just clamp the spring.


(4) There is a problem with the quality of the heat sealing film
The inability to seal is also related to the quality of the heat-sealing film. If the corona treatment of the composite lining is uneven, the effect is not good, and it happens to be at the sealing place, it will definitely not be able to seal. This situation is rare
See, but once it happens, the product must be scrapped. Therefore, in the color printing and packaging industry, the next process is to supervise the previous process. Once a quality problem is found, the cause must be analyzed in time
And resolve.


If there is moisture or dirt in the seal, the seal will not be strong.
In short: To solve the problem of the first sealing Mu Ling, the first version can appropriately increase the heat-sealing temperature, then reduce the heat-sealing speed, and increase the pressure of the cold-pressed rubber wheel.


The main reasons leading to the failure of the second type of seal are as follows.
Q) The heat sealing temperature is not enough
This problem can be solved by appropriately increasing the heat sealing temperature.


(2) The surface of the heat sealing knife is not flat enough
The heat-sealing knife is divided into two upper and lower pieces, and thermocouples are usually installed in them to sense temperature transfer. There are three screws on the heat sealing knife. The screw in the middle supports and strengthens the blade.
use. The other two screws are equipped with pressure springs and washers, which are mainly used to adjust the pressure of the heat-sealing knife. There are two springs on the upper and lower blades. .The main reason for the uneven surface of the heat-sealing knife is
The screws are installed at an angle, not horizontally; or the compression spring of the upper heat-sealing knife is uneven.

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