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After many rumors the new diaper from Drylock Technologies has been released. It is currently sold under brand Toujours as private label for supermarket chain Lidl.

Published in Product Design
Saturday, 01 September 2012 07:19

Requirements for baby diapers

Primary function of baby diapers  is retaining body fluids, but also a minimizing the negatives associated with wearing such articles by increasing the comfort of the wearer.

Published in Designing Product
Saturday, 25 August 2012 13:16

Infinicel - what is made of?

Infinicel Core

Infinicel is the commercial name used in some countries (like US) to advertise core utilized in P&G sanitary napkins. Formula and process to manufacture this core is very secret and not easy to discover. But using some patents we can make a very reliable guess.

Always Infinity core is composed of relatively thin, collapsed, polymeric foam material that, upon contact with aqueous body fluids, expand and absorb such fluids. These collapsed polymeric foam materials are also sufficiently flexible and soft so as to provide a high degree of comfort to the wearer.

Published in Product Design
Monday, 20 August 2012 21:24

How to design an absorbent core

A core is generally made of a mix of fluff and SAP (hereunder we wil not cover special cores made of other materials or so called "fluffless core"). Usually this mix is “homogeneously blended” (HB): it means that SAP and fluff are in the same ratio everywhere along the core. The reason to have an HB core is because SAP works better when it is well mixed with fluff and this improves core general  performances. Of course other type of constructions are possible altough, with current  cores available on the market today, they do not reach performances that HB cores can.

Published in Designing Product
Monday, 20 August 2012 21:18

Baby Diaper Core : what is made of

absorbent coreUp to 80’s it was general practice to form absorbent core for infant diapers, entirely from wood pulp fluff. Given the relatively low amount of fluid absorbed by wood pulp fluff on a gram of fluid absorbed per gram of wood pulp fluff, it was necessary to employ relatively large quantities of wood pulp fluff, thus necessitating the use of relatively bulky, thick absorbent structures.

During 80’s SAPs were introduced in baby diaper cores and allowed to reduce wood pulp fluff usage. 

Published in Designing Product
Monday, 20 August 2012 20:15

Fluffless Core for Baby Diapers

fluffless_coreAll baby diaper manufacturers are looking for new and more efficient core structures. Up to now cores are made of a mix of fibers (generally fluff) and superabsorbent polymer (SAP). The firsts represent the matrix to stabilize the second and keep it more or less fixed into the core.

Moreover fibers have the function to distribute fluid along the core and bring to SAP something to swallow. After last developments and new SAP generations this fluff function has became less and less important.

Therefore a goal for all hygiene absorbent product producers is to eliminate usage of fluff and obtain a core made of SAP only. This would lead to a thinner core and less expensive product.

Published in Product Design

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