Essays about: "Grammage"

Showing result 21 - 25 of 29 essays containing the word Grammage.

  1. 21. Evaluation of different models for flow through paper

    University essay from Fakulteten för teknik- och naturvetenskap

    Author : Arif Hussain; [2011]
    Keywords : ;

    Abstract : For understanding the energy use during vacuum dewatering and through air drying process, air flow through highly complex structure of paper has been investigated. Experiments were performed for a wide range of pressure drops and basis weights. In addition the pulp samples are refined to three different beating degrees. READ MORE

  3. 22. Effect of pigment volume concentration on the enzyme activity of bioactive coatings

    University essay from Fakulteten för teknik- och naturvetenskap

    Author : Syed Kashif Raza; [2011]
    Keywords : Chemical Engineering;

    Abstract : The aim of this project was to study the effect of pigment volume concentration on enzyme activity by using two different kinds of pigments (kaolin clay and calcium carbonate) in various concentrations. The coating colors were coated on various kinds of substrates for the different methods including flexible paper, board and plastic film. READ MORE

  4. 23. In-plane moisture variation and the effect on paper properties and out-of-plane deformation

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Aron Tysén; [2011]
    Keywords : Moisture; Curling; Cockling; spraying; drying;

    Abstract : For this master thesis, two methods to apply a pattern with a controlled amount of moisture to hand sheets were evaluated. The two methods evaluated were spraying and pressing. Spraying moisture onto the sheets was deemed the easiest method to control and was chosen for further studies. READ MORE

  5. 24. Investigation of mechanical tearing - and how it can be applied in openability prediction

    University essay from Lunds universitet/Förpackningslogistik

    Author : Henrik Skanse; [2009]
    Keywords : Tearing; Openability; Perforation; Tetra Pak; Production technology; Produktionsteknik; Technology and Engineering;

    Abstract : Abstract Perforations are one of Tetra Paks oldest inventions of how to open their carton packages. They have been a part of Tetra Briks product portfolio for over 30 years and quality testing is important. Bad openability, with plastic residues covering the torn hole, is a problem that needs to be addressed. READ MORE

  6. 25. Screening Web Breaks in a Pressroom by Soft Computing

    University essay from Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE)

    Author : Alzghoul Ahmad; [2008]
    Keywords : Printing press; Support vector machine; Web break; Genetic search; Data mining;

    Abstract : Web breaks are considered as one of the most significant runnability problems in a pressroom. This work concerns the analysis of relation between various parameters (variables) characterizing the paper, printing press, the printing process and the web break occurrence. READ MORE