The small diaper looks inconspicuous, but it is actually a very powerful liquid control system. It has surface layer, diversion layer, absorption core, bottom film, and anti-leakage edge of trouser legs. How does diaper manufacturing machine to make baby diapers?
First Generation Diaper Core
The first generation of core has the mixture of fluff pulp and polymer absorbent resin, which is not layered and divided, also known as the traditional core.
Advantages: The core body has good absorption effect, and the structure is loose and can absorb a lot of water.
Disadvantages: Faults, lumps, can affect the baby’s movements.
Because there is no added adhesive, the fluff pulp and polymer resin cannot be fixed, and the proportion of the two determines the thickness and absorption of the diaper. It also determines the extent of the fault. Tuo slant hard is mostly high molecular weight too much, the formation of hard glue, the baby will be uncomfortable. Soft tuo means that the ratio is moderate, generally does not affect the baby’s activities, but will affect the absorption of urine.
Second Generation Diaper Core Body
The second generation core is based on the first generation of fluff pulp and polymer resin to do a partition.
Advantages: Improve the phenomenon of the lump fault.
Disadvantages: Can not avoid the lump fault phenomenon.
Partition can play a certain role in fixing fluff pulp and polymer resin, but can not avoid the lump phenomenon.
Third Generation Diaper Core Body
The second generation core adopts a composite core structure, which has dust-free paper, non-woven fabric and polymer resin.
Advantages: The diaper is thinner, and does not fault, does not rise.
Disadvantages: hot melt adhesive just production will have odor, low production speed, complex process, high cost.
The use of composite core can make the diaper thinner, not fault can not afford a lump. The composite paper core needs bond with the core layer with hot melt adhesive, But the glue content is very small, hot melt adhesive is a plastic adhesive, in a certain temperature range of its physical state with temperature changes, chemical properties remain unchanged, its non-toxic and tasteless, an environmentally friendly chemical products. There is no information that hot melt adhesives are harmful to the human body. But it smells like a smell, especially the smell of diapers that have just been produced. However, these smells are harmless to the baby, open the package and take out the diaper for a period of time, and the taste will soon disperse.
The third generation core body has hot melt adhesive between each layer of material. And the core body contains a large number of polymers to ensure the absorption of diapers. The overall expansion after water absorption, formation can not afford the lump. And the original shape can be maintained after liquid absorption. The disadvantage of using composite core is that the process is more complex, the production speed of the diaper manufacturing machine equipment is low, and the cost is higher than the traditional core.
Fourth Generation Diaper Core
The fourth generation core is further divided on the basis of the third generation core.
Compared with the first and second generation diapers, the third and fourth generation diapers have better anti-reverse osmosis performance, large absorption capacity, and the absorption speed is also better than the first and second generations, and are more dominant as a whole.