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Fluffless Core: technology and process

fluffless core formerApparatus for transferring particulate material onto a web and build a fluffless absorbent core are not complex from technological point of view. 

Many years ago (and even today on simpler machines) rotary drum to dose SAP and transfer it on an airlaid web was a quite widespread system used in many sanitary napkins production lines. This drum had reservoirs on the surface and  number, size and position of which determining the amount and pattern of SAP granules taken up by the drum and released onto a substrate (generally a nonwoven web).  It was simple and effective, reliable and cheap (the so called indirect printing process).

In diapers the profile of absorbent core, whereby certain regions of the article comprise more SAP than other regions, is the key to get the appropriate core efficiency. And the traditional systems were not able to guarantee proper SAP placements especially at high speed in particular when fine particulate material is used and/ or when small and large quantities of reservoirs are used. 

Embossing Process Issues

embossing dieRotary embossing systems are tools that have traditionally been used to emboss the webs that form absorbent hygiene products. Typical embossing systems include rotary embossing rolls and cooperating, rotary anvil rolls. Different embossment dies can be fixed to rotary embossing rolls to produce a variety of desired embossment regions for absorbent articles. 

A typical embossed products, such as feminine sanitary napkin comprises a topsheet, absorbent core and backsheet. The latter is usually attached to the topsheet prior to the embossment phase. The attachment of the backsheet to the absorbent core prior to embossment usually limits the depth of the embossment regions, as if the embossment is too deep the backsheet may be damaged during the embossment process, such as by cutting or tearing the backsheet. 

Fameccanica introduces Janus

Janus DiaperRecently Fameccanica.Data introduced a new machine to produce training pants named Janus. This is a very interesting concept because take its basis from a different product design compared to the ones we can currently find on the market. We can say it is a tentative for Fameccanica to try to became a product innovator and not to simply follow requirements of their clients.

Nowadays training pants (or pull on diapers) are made following 3 typical designs: 

1.- diaper with full-waist elasticization by means of transversal elastic threads and with side sealing. This is a typical design used from many years in Asia and still used from majority of diaper producers. 

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