New application methods and technologies Spray application The contactless spray application method has been developed to overcome problems related to rod wearing and blocking of film sizers. In spray application, starch is fed through the nozzles directly on the web or on nip rolls. After starch application, the web is pressed into a nip similar
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New application methods and technologies
After reading this article you will..
After reading this article you will..
- recognise the main types of traditional surface sizing technologies.
- understand the application and metering principles in these sizing concepts.
Content
Natural fibre products
- Printing and writing papers
- Paperboards
- Tissue
- Nonwovens
- Speciality papers
- Production of paper and board
- Stock and water systems
- Web forming
- Wet pressing
- Drying of natural fibre products
- Surface sizing
- Pigment coating
- Finishing
- Converting of paper and board
- Papermaking chemistry
- Paper physics
- Printing
Authors & references
Author:
Antti Räisänen, Valmet
References:
- Hakola, J., Surface sizing with high nip pressure, 2019 TAPPI Papermakers Conference Proceedings.
- Paltakari, J. (ed.), Pigment Coating and Surface Sizing of Paper, (Book 11). Papermaking Science and Technology. 2nd ed. Finnish Paper Engineers´ Association /Paperi ja Puu Oy. Jyväskylä, 2009.
- OptiSizer Spray, Unique sizer with spray on roll application, Valmet Presentation 2019.
- OptiSizer Hard, sizer with hard roll covers, Valmet presentation 2019.
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This page has been updated 14.11.2020
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