ELECTRONIC ROTOGRAVURE PRINTING CYLINDER
[CODE NO.3835]
Gravure printing is a high-speed roll-to-roll printing technique which can overcome the disadvantages of inkjet and reproduce the process flow in Figure 1 with much higher throughput. Gravure is commonly used in the graphic arts industry for medium to long print runs where uniformity and versatility are required. Gravure printed products span a wide range, including bank notes, gift wrap, magazines, and postage stamps.
Gravure is an intaglio printing process, which means that the image carrier has the image etched below the surface of the non-image area. The gravure image carrier is an engraved cylinder patterned with individual wells that form a continuous image when printed. There are five main aspects of the gravure printing press: an engraved cylinder, doctor blade, ink fountain, impression roller, and drying press [GAA]. Figure 2 shows a schematic of a typical gravure printing process.
In gravure printing, the engraved cylinder is submerged in an ink fountain and then rolled over the substrate. A tightly pressed blade, called the doctor blade, wipes off excess ink from the non-image areas of the cylinder surface before contact with the substrate. The gravure cylinder most commonly consists of a steel core covered by a layer of copper, which is then patterned and covered with a thin layer of chrome to protect against wear from the doctor blade. The average lifetime for copper-chrome cylinders is between two to three million impressions, which is equivalent to a week of nonstop printing. Cylinders can be reused by stripping the chrome and copper layers. Modern engraving systems are capable of transferring digital images directly to the cylinder surface, which has helped to reduce the lead time for engravings to a few hours [GAA].
Gravure has a number of advantages over inkjet. First, gravure has a higher throughput because of its wider print area and its faster printing speed of up to 2000 ft/min. Gravure is also capable of simultaneously depositing multiple drops in a parallel fashion, as opposed to inkjet which must deposit drops one at a time in a serial fashion. Second, gravure can sustain long print runs because the cells are continuously refilled with ink as the roll is rotated into the ink fountain, and the roll is not subject to clogging. Finally, gravure is a very versatile process capable of printing on a broad range of substrates with a wide range of ink viscosities. These advantages also help gravure compete against other high-speed printing processes such as flexography, letterpress, lithography, and screen printing. Gravure is a mechanically simple process with fewer controlling variables than other printing processes, which tends to give it a more consistent image quality.
COST ESTIMATION
Plant Capacity 80 Cylinder/Day
Land & Building (1000 sq.mt.) Rs. 1.49 Cr
Plant & Machinery Rs. 70 Lac
Working Capital for 2 Months Rs. 1.19 Cr
Total Capital Investment Rs. 3.50 Cr
Rate of Return 37%
Break Even Point 50%
- INTRODUCTION
- FIGURE. SCHEMATIC OF GRAVURE PRINTING PROCESS [YIN]
- PROPERTIES
- B.I.S. SPECIFICATION
- CONSTRUCTION OF GRAVURE PRINTING SYSTEM
- FIGURE. MODEL OF LABORATORY GRAVURE PRINTER [SOURCE:
- ALEJANDRO DE LA FUENTE]
- FIGURE. SCHEMATIC OF PRINTING PROCESS FOR LABORATORY
- GRAVURE PRINTER [SOURCE: ALEJANDRO DE LA FUENTE]
- FIGURE. BLUEPRINT OF GRAVURE CYLINDER [SOURCE: ALEJANDRO
- DE LA FUENTE]
- PROCESS AND COMPONENTS OF ROTOGRAVURE PRINTING
- ENGRAVED CYLINDER
- PROCESS
- FEATURES OF ROTOGRAVURE PRINTING
- ADVANTAGE AND DISADVANTAGE OF ROTOGRAVURE PRINTING
- ADVANTAGES
- OTHER APPRECIATED FEATURES INCLUDE:
- DISADVANTAGES
- SHORTCOMINGS OF THE GRAVURE PRINTING PROCESS INCLUDE:
- MARKET OVERVIEW OF ROTOGRAVURE PRINTING MACHINE
- TECHNIQUE OF CYLINDER MAKING
- FIGURE. TOP VIEW OF A COPPER/CHROME CYLINDER AND PROCESS
- FLOW FOR REUSING CYLINDERS [GAA]
- FIGURE. CLOSE-UP OF CHROME CRACKS IN POLISHED CYLINDER
- FIGURE. CELL SIZES AND SCREEN ANGLES FOR ELECTROMECHANICAL ENGRAVING [GAA]
- FIGURE. PROCESS FLOW FOR CHEMICALLY ETCHING CYLINDERS
- [SOURCE: ALEJANDRO DE LA FUENTE]
- FIGURE. COMPARISON OF MICROLAB ROLL TO INDUSTRIAL ROLL
- FIGURE. COMPARISON OF CHEMICAL ETCHING WITH INDIRECT LASER
- METHOD OF MANUFACTURING ROTOGRAVURE CYLINDERS WITH
- ALUMINUM BASE
- CYLINDER MANUFACTURING FACILITIES
- IN-HOUSE BASE SHELL MANUFACTURING
- PLATING LINE
- HIGH PRECISION COPPER POLISHING LINE
- ENGRAVING
- CYLINDER PROOFING
- QUALITY CHECKS
- QC AT EACH AND EVERY STAGE OF THE PROCESS:-
- EMBOSSING
- WELDING (ROLL INNER TUBE WELDING)
- PRINCIPLES OF PLANT LAYOUT
- PLANT LOCATION FACTORS
- EXPLANATION OF TERMS USED IN THE PROJECT REPORT
- PROJECT IMPLEMENTATION SCHEDULES
- PLANT LAYOUT
- SUPPLIERS OF RAW MATERIALS
- SUPPLIERS OF PLANT AND MACHINERY
APPENDIX – A:
01. PLANT ECONOMICS
02. LAND & BUILDING
03. PLANT AND MACHINERY
04. OTHER FIXED ASSESTS
05. FIXED CAPITAL
06. RAW MATERIAL
07. SALARY AND WAGES
08. UTILITIES AND OVERHEADS
09. TOTAL WORKING CAPITAL
10. TOTAL CAPITAL INVESTMENT
11. COST OF PRODUCTION
12. TURN OVER/ANNUM
13. BREAK EVEN POINT
14. RESOURCES FOR FINANCE
15. INSTALMENT PAYABLE IN 5 YEARS
16. DEPRECIATION CHART FOR 5 YEARS
17. PROFIT ANALYSIS FOR 5 YEARS
18. PROJECTED BALANCE SHEET FOR (5 YEARS)
