Which method is widely used for manufacturing glass bottles and jars?
Analysis & Theory
The press and blow method is commonly used to manufacture hollow glass containers like bottles and jars.
The 'blow and blow' method is used in the production of:
Analysis & Theory
The blow and blow method forms containers by blowing air into molten glass inside a mold.
The float glass process involves floating molten glass on:
Analysis & Theory
Molten glass is floated on a bath of molten tin to produce flat, smooth sheet glass.
Which process gives glass with excellent flatness and surface finish?
Analysis & Theory
The float process produces high-quality flat glass with smooth surfaces and uniform thickness.
The Fourcault process is mainly used to manufacture:
Analysis & Theory
The Fourcault process is a vertical drawing method for producing sheet glass.
Which glass product is made by bonding two sheets with a plastic interlayer?
Analysis & Theory
Laminated safety glass is made by sandwiching a plastic interlayer (e.g., PVB) between two glass sheets.
The main advantage of tempered glass over annealed glass is:
C
Improved mechanical strength
Analysis & Theory
Tempered glass is much stronger than annealed glass and shatters into blunt pieces upon breakage.
Which process is used to make thin-walled and uniform glass tubing?
Analysis & Theory
The Danner process is a widely used method for producing glass tubes by drawing molten glass over a rotating mandrel.
Which of the following is a fabrication method specifically for optical glasses?
C
Molding and annealing under controlled conditions
D
Rolling between steel rollers
Analysis & Theory
Optical glasses are molded and annealed carefully to maintain high clarity and minimal stress.
Glass containers are formed in which type of mold?
Analysis & Theory
Glass containers are formed using closed metal molds in the press and blow or blow and blow processes.
What is the key characteristic of glass made using the float process?
Analysis & Theory
Float glass is optically flat and free of distortions due to its formation over molten tin.
Which fabrication process is best suited for manufacturing light bulbs and vials?
Analysis & Theory
The Danner process allows consistent tube production used in items like light bulbs and vials.
The primary advantage of laminated safety glass is:
Analysis & Theory
Laminated glass holds together when broken, reducing injury risk from sharp shards.
Which process is used to manufacture glass sheet by drawing molten glass upward through rollers?
Analysis & Theory
The Fourcault process pulls molten glass vertically through rollers to create sheet glass.
The float glass process was developed by:
Analysis & Theory
Pilkington developed the float glass process in the 1950s.
In the fabrication of optical lenses, which property is most important?
C
Refractive index and clarity
Analysis & Theory
Optical lenses must have a controlled refractive index and be free of defects for accurate light transmission.
Which type of glass is most commonly used for windows in buildings?
Analysis & Theory
Float glass is commonly used in windows due to its optical clarity and flatness.
In the Danner process, glass is drawn into tubes using:
C
A rotating mandrel and air pressure
Analysis & Theory
In the Danner process, molten glass flows over a rotating mandrel and is shaped into tubes using air pressure.
Which process provides safety glass that does not splinter into sharp pieces when broken?
Analysis & Theory
Tempered glass shatters into small, blunt pieces, making it safer than annealed glass.
Which fabrication technique is least suitable for large-scale sheet glass production?
Analysis & Theory
Blow and blow is used for hollow items, not sheet glass, making it unsuitable for flat glass production.