Industry Overview
Float glass is a sheet glass manufactured by floating molten glass over a bed of molten metal, producing uniform thickness and exceptionally flat, distortion-free surfaces. The modern manufacturing method is commonly known as the Pilkington process, named after its British developer. Float glass is one of the most widely used forms of glass in consumer and industrial applications and generally does not require polishing.
Its applications include automobile glass, mirrors, insulated glass, furniture, windows, doors, retail displays, countertops, showroom cases, and commercial glazing. It also serves as a base material for specialized products such as laminated, toughened, frosted and soundproof glass. Float glass can be processed through techniques including bending, silk screen printing, sandblasting, acid-etching and thermal toughening.
The material offers a clear, crystal-like appearance and is used extensively in residential and commercial spaces for both functional and decorative purposes. It can be produced in different thicknesses, shades and sizes according to customer requirements. The glass industry also emphasizes energy-efficient and recyclable products, with float glass providing a versatile foundation for a broad range of downstream glass applications.
Cost Estimation
| Particulars | Value |
|---|---|
| Plant Capacity | 600 Ton/Day |
| Land & Building (10,000 sq.mt.) | Rs. 6.84 Cr |
| Plant & Machinery | Rs. 122.95 Cr |
| Working Capital for 2 Months | Rs. 38.85 Cr |
| Total Capital Investment | Rs. 184.14 Cr |
| Rate of Return | 42% |
| Break Even Point | 57% |
Content Index
- INTRODUCTION
- TYPES OF GLASS FROM THE FLOAT PROCESS
- KEY PROPERTIES OF FLOAT GLASS:
- USES AND APPLICATION
- APPLICATION
- BUILDING INDUSTRY
- COMMERCIAL GLAZING
- DISPLAYS
- B.I.S. SPECIFICATION
- PROCESS FLOW CHART
- MANUFACTURING PROCESS OF FLOAT GLASS
- FIGURE: GLASS GENERAL PROCESS
- 1. BATCH MIXING AND PREPARATION
- COMPOSITION OF FLOAT GLASS
- 2. MELTING
- A) HEATING
- B) PRIMARY MELTING
- C) FINING AND HOMOGENISATION
- D) CONDITIONING
- THE MAIN TYPES OF MELTING FURNACES ARE:
- I) REGENERATIVE FURNACES
- II) RECUPERATIVE FURNACES
- III) OXYFUEL MELTING FURNACES
- IV) ELECTRIC FURNACES
- V) COMBINED FOSSIL FUEL AND ELECTRIC MELTING FURNACES
- VI) DISCONTINUOUS BATCH MELTING FURNACES
- VII) SPECIAL FURNACES
- 3. FORMING PHASE
- FIGURE 4: FLOAT GLASS PROCESS
- 4. FINISHING AND PACKAGING
- ANNEALING
- TOUGHENING
- COATING AND DECORATING
- 5. QUALITY ASSURANCE
- QUALITY CHECKS, AUTOMATIC CUTTING, AND STORAGE
- INSPECTION SYSTEM OF GLASS
- 6. CUTTING TO ORDER
- 7. MARKING
- 8. BIS CERTIFICATION MARKING
- MARKET POSITION
- CONTAINER GLASS INDUSTRY
- FLAT GLASS INDUSTRY
- FIBER GLASS INDUSTRY
- SPECIALTY GLASS INDUSTRY
- GROWTH DRIVERS OF THE GLASS INDUSTRY
- GREEN BUILDING CONCEPT
- REAL ESTATE SECTOR
- AUTOMOTIVES INDUSTRY
- SOLAR ENERGY GLASS DEMAND
- PACKAGING INDUSTRY
- GLOBAL PERSPECTIVE
- CHALLENGES FACED BY THE GLASS INDUSTRY
- 1. COST
- 2. CAPEX
- 3. COMPETITION
- 4. AWARENESS OF GLASS AS ECO-FRIENDLY BUILDING MATERIAL OR PACKAGING SOLUTION
- 5. PACKING AND LOGISTICS
- 6. UNFAVORABLE DUTY STRUCTURE
- GOVERNMENT SUPPORT
- I. MINISTRY OF COMMERCE & INDUSTRY
- II. DIPP
- III. HEALTH MINISTRY
- IV. ENVIRONMENT MINISTRY
- CONCESSION ON NATURAL GAS
- PLANT LAYOUT
- PRINCIPLES OF PLANT LAYOUT
- MAJOR PROVISIONS IN ROAD PLANNING FOR MULTIPURPOSE SERVICE ARE:
- PLANT LOCATION FACTORS
- PRIMARY FACTORS
- 1. RAW-MATERIAL SUPPLY:
- 2. MARKETS:
- 3. POWER AND FUEL SUPPLY:
- 4. WATER SUPPLY:
- 5. CLIMATE:
- 6. TRANSPORTATION:
- 7. WASTE DISPOSAL:
- 8. LABOR:
- 9. REGULATORY LAWS:
- 10. TAXES:
- 11. SITE CHARACTERISTICS:
- 12. COMMUNITY FACTORS:
- 13. VULNERABILITY TO WARTIME ATTACK:
- 14. FLOOD AND FIRE CONTROL:
- EXPLANATION OF TERMS USED IN THE PROJECT REPORT
- 1. DEPRECIATION:
- 2. FIXED ASSETS:
- 3. WORKING CAPITAL:
- 4. BREAK-EVEN POINT:
- 5. OTHER FIXED EXPENSES:
- 6. MARGIN MONEY:
- 7. TOTAL LOAD:
- 8. LAND AREA/MAN POWER RATIO:
- PROJECT IMPLEMENTATION SCHEDULES
- INTRODUCTION
- PROJECT HANDLING
- PROJECT SCHEDULING
- PROJECT CONSTRUCTION SCHEDULE
- TIME SCHEDULE
- SUPPLIERS OF FLOAT GLASS
- SUPPLIERS OF RAW MATERIALS
- SUPPLIERS OF SILICA SAND
- SUPPLIERS OF SODA ASH
- SUPPLIERS OF DOLOMITE POWDER
- SUPPLIERS OF FELDSPAR
- SUPPLIERS OF CULLETS
- CHINA SUPPLIER OF FLOAT GLASS PLANT
- SUPPLIERS OF PLANT AND MACHINERY
- SUPPLIERS OF METAL TESTING MACHINE
- SUPPLIERS OF PRECISION MEASURING TOOLS
- SUPPLIERS OF NDT INSPECTION EQUIPMENT
- SUPPLIERS OF ELECTRICAL MEASURING INSTRUMENTS
- SUPPLIERS OF DG SETS
- SUPPLIERS OF EOT CRANES
- SUPPLIERS OF POWER TRANSFORMERS
- SUPPLIERS OF ELECTRICAL PANEL
- SUPPLIERS OF ELECTRIC MOTOR
- SUPPLIERS OF COOLING TOWER
- SUPPLIERS OF EFFULENT TREATMENT PLANT (ETP PLANT)
- SUPPLIERS OF AIR POLLUTION CONTROL EQUIPMENTS
- SUPPLIERS OF AIR CONDITIONING EQUIPMENTS
- SUPPLIERS OF AIR COMPRESSORS
- SUPPLIERS OF PLATFORM WEIGHING MACHINE
- SUPPLIERS OF MATERIAL HANDLING EQUIPMENTS
- SUPPLIERS OF FIRE FIGHTING EQUIPMENTS
- SUPPLIERS OF SHOT BLASTING MACHINE
- SUPPLIERS OF JIGS AND FIXTURE
- SUPPLIERS OF SUBMERSIBLE WATER PUMP
Appendix
- 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)
Frequently Asked Questions
Float glass is a smooth, flat and distortion-free sheet glass manufactured by floating molten glass over a bed of molten metal. This manufacturing technique produces consistent thickness and highly flat surfaces. The process is widely associated with the Pilkington process. Float glass is used as a basic material for many downstream glass products, including windows, doors, mirrors, automobile glass, insulated glass, laminated glass and toughened glass.
Float glass is manufactured through batch preparation, melting, forming, finishing and quality assurance operations. Raw materials are mixed and prepared before being melted in a suitable furnace. The molten glass is then formed by floating it over molten metal to obtain a flat and uniform sheet. Subsequent operations can include annealing, cutting, marking, coating, decorating and packaging, followed by inspection and quality checks before the finished glass is stored or dispatched.
Float glass is widely used in building, automotive, furniture, display and decorative applications. Typical uses include windows and doors, commercial glazing, mirrors, insulated glass, automobile glass, countertops, retail shop windows and showroom display cases. It is also processed further to produce laminated, toughened, frosted and other specialized glass products. Its smooth surface, optical clarity and adaptability make it suitable for both functional and aesthetic applications.
Common raw materials identified for float glass production include silica sand, soda ash, dolomite powder, feldspar and cullets. These materials are prepared and mixed into a batch before entering the melting stage. The precise composition depends on the required glass properties and manufacturing specifications. Consistent raw-material quality is important because impurities, particle characteristics and composition can influence melting behavior, glass quality and the performance of the final product.
Glass melting can use several furnace configurations depending on production requirements and process conditions. The report identifies regenerative, recuperative, oxyfuel, electric, combined fossil fuel and electric, discontinuous batch melting and special furnaces. Furnace selection influences energy consumption, melting performance, temperature control, production continuity and overall plant operation. A commercial float glass plant therefore requires appropriate consideration of furnace technology along with fuel supply, utilities, environmental controls and the desired manufacturing capacity.
Important plant location factors include raw-material availability, market access, power and fuel supply, water availability, climate, transportation, waste disposal and labor. Regulatory laws, taxes, site characteristics, community factors, flood and fire control and other location-specific considerations also influence the decision. For a float glass project, reliable logistics and utility infrastructure are particularly important because continuous glass manufacturing requires dependable supplies of raw materials, energy, water and supporting services.
Quality control in float glass manufacturing involves inspection, quality checks, automatic cutting and storage controls. The manufacturing process must maintain appropriate batch preparation, melting, forming and finishing conditions to achieve uniform and distortion-free glass. Inspection systems are used to identify defects before products are processed or dispatched. Depending on the final application, additional operations such as annealing, toughening, coating, decorating, cutting to order, marking and BIS certification marking may also form part of the quality and finishing process.
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