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Method development: follow liquid distribution in real time
University of Borås, Faculty of Textiles, Engineering and Business.
University of Borås, Faculty of Textiles, Engineering and Business.
2017 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Metodutveckling för vätskespridning (Swedish)
Abstract [en]

Continuous development and improvement of the modern disposable diaper is crucial for the optimization of product performance. Several methods are used for evaluation and improvements to sustain high quality diapers being produced. The aim of this thesis was to develop a new test method that follows liquid distribution in real time by combining two pre-existing measurement systems. Rewet is the amount of liquid that returns to the surface of diapers when subjected to pressure. Distribution of absorption material is examined by exposing the product core to radiation. These two measurement systems don’t convey anything about the course of the liquid in the diaper when tested separately. This method development is meant to be beneficial for research and development purposes at SCA, working as a complement to the pre-existing methods being used in the laboratory. The following questions are of interest: • Can the rewet test method be performed on a baby diaper while simultaneously exposing the product core to radiation so the course of the liquid can be followed in real time? • Is the liquid distribution (wet area) affected by different product compositions e.g. SAP or thickness? By modifying the current methods, rewet can be performed inside the x-ray equipment while studying the consistency of absorption material and following the liquid behavior in the product core. The developed method was verified by testing on handmade products with different compositions. The developed method’s rewet value has proved to be equivalent to the one tested outside, showing no significant difference between the two.

Place, publisher, year, edition, pages
2017.
Keywords [en]
Absorption, diaper, diffusion, liquid distribution, method development, permeability, pulp, rewet, SAP, skin health, thickness, wet area, x-ray.
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:hb:diva-12813OAI: oai:DiVA.org:hb-12813DiVA, id: diva2:1147172
Subject / course
Chemical engineering
Available from: 2017-10-16 Created: 2017-10-05 Last updated: 2018-07-02Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
Language
  • de-DE
  • en-GB
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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