Sökning: "flexography printing"

Visar resultat 6 - 10 av 12 avhandlingar innehållade orden flexography printing.

  1. 6. Where did the ink go? : The effect of liquid absorption on ink distribution in flexography

    Författare :Sofia Thorman; Li Yang; Magnus Lestelius; Martti Toivakka; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flexographic printing; print mottle; ink trapping; absorbency; absorption non-uniformity; water-interference mottle; Chemical Engineering; Kemiteknik;

    Sammanfattning : The appearance of a print is affected by the individual ink layers. If the ink is unevenly distributed on the substrate it lowers the quality. This thesis puts focus on how the liquid absorbency of a coated substrate impacts on the ink distribution in flexographic printing. LÄS MER

  3. 7. Absorption non-uniformity characterisation and its impact on flexographic ink distribution of coated packaging boards

    Författare :Sofia Thorman; Li Yang; Göran Ström; Magnus Lestelius; Janet Preston; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Liquid absorption; Absorption non-uniformity; Characterisation; Measurement technique; Print Mottle; Flexography; Coated packaging boards; Chemical Engineering; Kemiteknik;

    Sammanfattning : There are high demands on flexographic print quality to be sufficiently high and consistent in order to create a competitive packaging. At the same time the production efficiency need to be high. Printers thus need to achieve the same quality every time and quickly start-up new printing jobs. LÄS MER

  4. 8. Water-based Flexographic Printing on Polymer-coated Board

    Författare :Maria Rentzhog; Mark Rutland; Joseph Aspler; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Surface and colloid chemistry; Yt- och kolloidkemi;

    Sammanfattning : This doctoral thesis comprises three studies dealing with water-based flexography on polymer-coated boards, which have been presented in the five papers included at the end of the thesis. The first study (covered in three papers) presents results from characterisation of a matrix of water-based inks with respect to their rheology, surface tension, wetting, and fulltone printing performance on PE-coated board. LÄS MER

  5. 9. Some aspects on flexographic ink-paper and paperboard coating interaction

    Författare :Robert Olsson; Magnus Lestelius; Li Yang; Jan van Stam; Timothy C. Claypole; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flexography; Ink; Coating; Paperboard; Printing; Chemical engineering; Kemiteknik; Chemical Engineering; Kemiteknik;

    Sammanfattning : Flexographic printing is a process that employs a flexible printing form and low viscous ink, often water-based. The flexible printing form is favourable for printing on rough surfaces, but the high surface tension of the ink may cause printability problems. LÄS MER

  7. 10. The Influence of Moisture, Temperature, Pressure Pulse and Substrate on Print Quality in Flexographic Printing

    Författare :Johanna Johnson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

    Sammanfattning : Flexographic printing is a common printing method for package printing. It is primarily the flexible printing plate and the low viscosity inks that characterizes flexographic printing, and make it possible to print on a variety of substrates. One drawback of flexographic printing has been limited print quality. LÄS MER