For your interpretation of the eight edge-sealing bag production problems and solutions!
by:Kolysen
2021-03-08
Eight edge-sealing bag is very popular in the market, it is known to all week.
Though, it has the advantages of a, but each manufacturer in manufacturing is very uncomfortable.
Because eight edge sealing packaging requirements of the production process is higher, making it faces some problems.
Small make up today about the simple give you some examples.
1, eight edge-sealing bag failure situation, the reason, how should solve?
Reason: if this phenomenon appeared, means when heat sealing temperature is higher, the pressure under the action of heat sealing the knife, bearing heat sealing function of inner PE film by high temperature melting, extrusion, thin, crisp, cause damage when the drop test.
Solution: in eight edge-sealing bag bag, according to the material, thickness adjustment of eight edge-sealing bag is most suitable for heat sealing temperature and pressure.
Can produce excellent comprehensive properties of products.
2, eight edge-sealing bag sealing crisp, the reason, how should solve?
The reason:
1)
In the process of heat sealing temperature is too high.
(
2)
Excessive pressure in bag.
(
3)
In the process of bag making heat sealing time is too long.
(
4)
The edge of the upper sealing mouth too sharp or teflon coated by the damage.
(
5)
At the bottom of the sealing of the silicone rubber.
(
6)
In a composite and curing process, the part of the infiltration of adhesive film inside.
Base material due to the penetration of adhesive, toughness,
Resistance to impact)
Fell, brittleness increased.
(
7)
Plastic composite bags after cooling and placement, heat seal strength increase significantly, but also the change tendency of the brittle.
The solution:
1)
According to the properties of heat sealing the photosensitive layer material, choose the appropriate processing temperature, pressure and heat sealing time.
(
2)
To improve the upper heat sealing knife surface state, make mouth sealing surface is flat and level.
(
3)
With teflon xi cloth cover intact.
(
4)
Choose a suitable hardness of silicone rubber pad.
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