Dating owens illinois bottles
The process can be adapted in order to introduce wire mesh into the glass ribbon.(See also "Pilkington double-pass wired glass process" and "wired glass).The following terms are used in the Glass industry A B C D E F G H I K L M N O P R S T V W Acid etching This process for the decoration of glass involves the application of hydrofluoric acid to the glass surface.Hydrofluoric acid vapours or baths of hydrofluoric acid salts may be used to give glass a matt, frosted appearance (similar to that obtained by surface sandblasting), as found in lighting glass.Back to top Banding The application of decorative bands of enamel or precious-metal compounds, normally by machine, to containers such as tumblers, cups, cosmetics bottles, etc.Barium crown glass Barium crown glasses contain larger proportions of boron oxide and barium oxide with a relatively low Si O2 content.Blowpipes have a mouthpiece at one end and are usually fitted at the other end with a metal ring that helps to retain a gather.
Bevelling The production, by abrasion, of a sloping edge on the glass sheet. Blow-and-blow process A production process used for glass container manufacturing with forming machines.Such glass is highly resistant to chemical corrosion and temperature change (thermal shock) and is particularly suitable for laboratory ware (test tubes, etc.), domestic cooking ware (oven dishes, etc.), high-power lamps and other technical glass ware. machines Boudin process A glass rolling process in which glass flow is controlled by the speed of the machine and fed directly onto the rollers over a refractory sill.It is also used when glass has to be bonded to metal and low expansion is a key characteristic. As the ribbon of glass passes from the forming rollers, it is supported by an air cushion.This phase is followed by a period of cooling with a pre-defined temperature gradient.
Armour plate glass Laminated glass, resistant to mechanical shock, composed of at least four panes of glass and usually at least 25 mm thick.
Air trap, air lock An air-filled void, which may be of almost any shape.