Coating Technology (3 cr)

Objectives (course unit)

The students know the aims of coating and the demands the coating and different printing methods place on the paper. The students know different coating processed, coating machines and how the drying of coating affects the end product. The course strengthens the students’ professional development.

Content (course unit)

Coating raw materials: pigments, binders and auxiliary substances and handling them. Making coating colour formulas, rheological characteristics of coating colour and how to affect them. Coated paper and paperboard types and the demanded characteristics from the formula viewpoint. Different coating methods (blade coating, film coating, non-contact coating) and their usages. Drying strategy of coating. Manufacturing intelligent products by using coating.

Exam schedules

October 2015

Assessment methods and criteria

Target of Coating Technology:
The target of this course is to know the coating and surface sizing technology of paper and paper boards.
To understand the raw materials in coating technology, coating colour preparation and testing, different coating methods and coating machine structures.
To understand interaction between coating colour properties and factors and variables of coating process.
To know interaction between the properties of coated paper and the coating colour raw materials.
Evaluation:
Examination
Activiness in lessons (> 80% -> 4 p.),
tasks,
Grades 1-5

Teaching methods

Coantact lessons, interactive learning in groups, tasks,
demonstrations etc.

Learning materials

Material in coating technology course
FAPET: Pigment Coating and Surface Sizing of Paper

Student workload

Contact lessons 42 hours, Independent work of Student 40 hours

Content scheduling

Week 36 Introduction, Implementation,
Task: Introduction and history to the pigment coating and surface sizing,
Coated products, base paper and paper board:
Week 36 ja 37
Raw materials of coating colour: coating pigments, binders,
co-binders and thickeners and additives;
The preparation of coating pigments and other raw materials,
Week 38
Composition on coating colour
Coating color recipe, planning and calculation of recipe.
Coating colour preparation, Testing of coating colour, Rheology of
coating colour slurries
Week 39 Coating technology: Coating methods; Coating machine operations , Task in moodle
Week 40 and 41Coating layer formation and structure and meas-urements of coating layer, Drying and calendering of paper coatings Process control and automation
Week 42 Season holiday
Week 43 Surface sizing: Coating colour of surface sizing, Surface sizing technology and methods
Week 44 Coating laboratory work ,
Week 45 Coating laboratory work
Week 46 Coating laboratory work
Week 47 Coating laboratory work

Completion alternatives

University level studies (high grade)of paper and paper board coating

Practical training and working life cooperation

Raw materials of coating technology

Assessment criteria - excellent (5) (Not in use, Look at the Assessment criteria above)

Student can choose right raw materials for coating color application.
Understand how raw materials, coating color properties and coating parameters affect on quality of end product.
Can choose right coating method used in different paper and paper board grade.