it depends on the type of glass being manufactured. what is the approximate melting point of glass? it doesn't have a distinct melting point. what are the proper names for the three standard furnace glass colors? flint-clearĮmerald-green what is one reason why a design might specify a blue-colored bottle? to enhance the whiteness of a product. what is a "bird swing" and on what kind of bottle is it likely to be found? bird swing is a glass thread that joins the two walls of a bottle. what are the advantages of a round bottle design? efficient use of material, strength, easy to handle, no orientation, label options and speed of labeling. an orientation lug is used to register the label with a bottle feature. what design feature is used to reduce label abrasion indented label panels help protect the label from abrasion. what are the disadvantages of a bottle designed with a long neck? higher center of gravity, more visible fill-level variation. Push up - a concave area at the bottom of the bottle. Heel tap - an excess wall thickness at the baseĬhoke neck - an excessive thickness just below the finish 1% Define: gob, blank mold, finish, heel tap, choke neck, push up gob - sheared unit of molten glassīlank mold - a mold set used to create the container parisonįinish - an opening of the bottle that accepts the closure. what is the general capacity tolerance level for large glass bottles. glass bottle cannot be made to have perfectly consistent volume. an oval bottle will be heariver, will label at a slower rate, may have limited decoration options and could "shingle" on a conveyor. a larger shoulder is a vulnerable spot for abusive contact. but the bottom has room to continue moving forward, causing the bottle to tip backward. conveying is problematic because the shoulder touch first. What problems might be encountered with a bottle that is wider at the top than at the base? the high center of gravity will cause the bottle to be unstable.
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