Gravure, Flexography and Screen Printing detail TNDTE Diploma syllabus for Apparel Technology (PT), M scheme is extracted from TNDTE official website and presented for diploma students. The course code (38242), and for exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below. The syllabus PDFs can be downloaded from official website.
For all other printing tech 4th sem syllabus for diploma m scheme tndte you can visit Printing Tech 4th Sem Syllabus for Diploma M Scheme TNDTE Subjects. The detail syllabus for gravure, flexography and screen printing is as follows.
Rationale:
The industry is dominated by three separate and distinct processes – flexography, gravure, and screen printing. The five major printing processes are distinguished by the method of image transfer and by the general type of image carrier employed. Depending upon the process, the printed image is transferred to the substrate either directly or indirectly. In direct printing the image is transferred directly from the image carrier to the substrate, examples of direct printing are gravure, flexography, screen printing.
Each of the printing processes has particular properties, characteristics and associated costs which make it more suitable for certain classes of work than others.
It has to be acknowledged, however, that there is a considerable amount of common ground where two or more printing processes may regularly be used to produce a certain printed product – eg – books printed by offset litho, flexography and letterpress, newspapers by offset litho (cold-set) and flexography, reel-fed labels by flexography and letterpress, periodicals printed by sheet-fed, heat-and cold-set web offset, also web-fed gravure.
Objectives:
At the end of the study of IV Semester the student will be able to:
- Learn the Basic Principles of Gravure, Flexography and Screen Printing Process.
- Understand the Main Sections of Gravure, Flexography and Screen Printing Process.
- Know the Image Carrier Preparation Methods of Gravure, Flexography and Screen Printing Process.
- Understand the best applicable Method of Image Carrier Preparation.
- Study the Flexography Press Operations in detail.
- Understand the substrates used for Flexography Printing.
- Learn in detail about the Gravure Press Operations.
- Know about the inks used for Gravure Printing.
- Understand the Screen Printing Operations.
- Learn the Screen Printing Press, their types and applications.
Detailed Content:
Unit I
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Unit II
Image Carrier Preparation
- Flexography Image Carrier Preparation: Structure of Flexographic Plate, Plate Preparation Methods – Rubber Plates preparation, Sheet Photopolymer Plates preparation and Liquid Photopolymer Plates Preparation.
- Gravure Image Carrier Preparation: Gravure Cylinder manufacture, Copper plating method, Gravure Cylinder Preparation Methods – Conventional Method / Carbon Tissue Method of Gravure cylinder preparation, Electromechanical Engraving method of Gravure cylinder preparation and Laser Engraving method of Gravure cylinder preparation.
- Screen Printing Image Carrier Preparation: Screen Fabrics, Screen preparation by Direct Method, Screen preparation by Indirect / Transfer method and Screen preparation by Direct / Indirect method.
Unit III
Flexography Printing
- Flexography Inking Systems: Ink Metering, Anilox Roller, Types of Flexography Inking systems
- Types of Anilox Cells and Cleaning Systems, The Anilox Roll, Anilox Roll specifications – Cell count, Cell depth, Cell volume, Types of Anilox roll based on cell shapes – Inverted Pyramid shape cells, Quadrangular shapes cell and Trihelical shape cells. Types of Anilox Rolls based on roller surfaces – Laser engraved ceramic anilox rolls and Conventional or mechanically engraved chrome anilox rolls, Different types of Anilox Roll Cleaning Systems.
- Selection of Suitable Anilox Roller: Factors to be considered in selection of anilox roller.
- Flexography Plates – Structure and Mounting Techniques, Flexography plates: Metal backed plates, Magnetic plates, Flexographic Plate Mounting: Plate Mounting Fundamentals, Sticky back plate mounting, Types of Flexography Plate cylinders.
- Sleeve Technology, Direct laser engraving – Laser engraving on Rubber Rollers.
- Corona Treatment, Flexo Substrates – Paper and Paperboard stocks, Corrugated stocks, Plastic Films, Foils and Laminates.
Unit IV
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Unit V
Screen Printing
- Mesh, Squeegee Selection, Mesh / Woven Screen Printing Fabric: Materials used for Screen Printing Fabrics, Squeegee selection: The squeegee, Squeegee selection – Shapes of squeegee blades, Squeegee hardness and Squeegee materials.
- Screen Pretreatment, Screen Tensioning / Stretching: Basic steps in Screen Tensioning, Stretching the Screen Printing Fabric -Manual Stretching and Machine Stretching.
- Types of Screen Printing Machines – Container Screen Printing machine, Flat bed Hinged frame (Automatic) Screen Press, Rotary Screen Printing Press and Carousal Screen Printing Machines.
- Screen Printing Inks – Types, Properties, Types of Screen Printing Inks for specific Application
- Screen Printing Applications: Screen Printing on Flat surfaces and Screen Printing on Curved Surfaces.
Reference Books:
- Flexographic Principles and Practice – by Flexographic Technical Associations, Inc. New York, 1980.
- Rotogravure and Flexographic Printing Presses – by Herbert L. Weiss,
- Modern Gravure Technology – by Harry B Smith, Pira International, U. K.
- Screen Process Printing – by John Stephens, Blue Print, An Imprint of hapman and Hall, London.
- Flexography Primer – by GATF.
- Hand book of Printmedia – by Helmut kipphan
- Flexography Primer – by Donna C. Muvihill, GATF
- Gravure Primer – by Cheryl L. Kasumich, GATF
- Screen Printing Primer – by Samuel Ingram, GATF
For detail syllabus of all other subjects of BE Printing Tech, M scheme do visit Printing Tech 4th Sem syllabus for M scheme.
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