Glasswares: Classifications and Types of Glass

Question 1

a hard, brittle, chemically inert substance produced by fusing silica together with a flux and a stabilizer into a mass that cools to a rigid condition without crystalization

Answer 1

Glass

Question 2

most common commercial glass; primarily used for bottles, jars, everyday drinking glasses, and window glasses

Answer 2

Soda-Lime Glass

Question 3

has a high refractive index and relatively soft surface, making it especially suited for decorating by grinding, cutting, and engraving

Answer 3

Lead Glass

Question 4

same as lead glass, but containing less lead

Answer 4

Crystal Glass

Question 5

composed mainly of silica and boric oxide with smaller amounts of the alkalis; for ovenware and other heat-resisting ware

Answer 5

Borosilicate Glass

Question 6

used in diverse fields such as in chemistry, pharmacy, electronics, optics, apparatus and instrument, construction and lighting industries

Answer 6

Special Glass

Question 7

refers to all glass products in a flat form, regardless of manufacturing method

Answer 7

Flat Glass

Question 8

generally are consumer goods such as bottles, drinking glasses or glass lamps

Answer 8

Hollowware

Question 9

fabricated by drawing the molten glass from a furnace (drawn glass), or by forming a cylinder, dividing it lengthwise, and flattening it (cylinder glass).

Answer 9

Sheet glass

Question 10

formed by rolling molten glass into a plate that is subsequently ground and polished after cooling

Answer 10

Plate glass

Question 11

manufactured by pouring molten glass onto a surface molten tin and allowing it to cool slowly

Answer 11

Float Glass

Question 12

glass that is cooled slowly to relieve internal stresses

Answer 12

Annealed Glass

Question 13

annealed glass that is reheated to just below hthe softening point and then rapidly cooled

Answer 13

Tempered Glass

Question 14

consists of two or more piles of flat glass bonded under heat and pressure to interlayers of polyvinyl butyral resin that retains the fragments if the glass is broken

Answer 14

Laminated or Safety Glass

Question 15

having a square or diamond wire mesh embedded within it to prevent shattering in the event of breakage or excessive heat

Answer 15

Wired Glass

Question 16

has a linear or geometric surface pattern formed in the rolling process to diffuse light

Answer 16

Patterned Glass

Question 17

has one or both sides acid-etched or sandblasted

Answer 17

Obscure Glass

Question 18

an opaque glass for concealing the structural elements in curtain wall construction

Answer 18

Spandrel Glass

Question 19

consisting of two or more sheets of glass separated by a hermetically sealed air space to provide thermal insulation

Answer 19

Insulating Glass

Question 20

has a chemical admixture to absorb a portion of the radiant heat and visible light that strike it

Answer 20

Tinted or Heat-absorbing Glass

Question 21

has a thin, translucent material coming to reflect a portion of the light and radiant heat that strikes it

Answer 21

Reflective glass

Question 22

transmits visible light while selectively reflecting the longer wavelengths of radiant heat produced by depositing a low-e coating

Answer 22

Low-emission Glass