Glass beads refer to small, round, or multiple sided beads that are made up of colored or transparent glass having holes for threading. Glass beads can be classified on the basis of shimmering effects, material and technology used, luster, and places of origin. The primary criterion for sorting glass beads into typological categories is the technique of manufacture. Six major types are pertinent to North American researchers, which include drawn, wound, wound on drawn, mold-pressed, blown, and Prosser molded.
Wound beads also termed wire
wound and mandrel wound was produced by winding a viscid rod or a strand drawn
there from around a rotating metal mandrel one or more times until the desired
size and shape were achieved. While still soft, the beads might be decorated
with any of a myriad of inlays or appliques. They might also be pressed with
small metal paddles or clamped in tong-like molds to impart a design or a
uniform shape. When cool, the beads were stripped from the mandrel, which is
sometimes tapered or covered with chalk, graphite or clay to facilitate this
step.
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The various types of glass beads
include Venetian, lampwork, furnace, handmade, Murano, blown, glass cane beads,
hand blown, vintage, glass seed beads, beach glass beads, faceted, crystal,
hemp, frosted, fused, pressed, powdered, dichroic, handcrafted, fish, art, and
African glass beads. Drawn beads are also called tube, cane, and hollow cane
beads; the appellation "drawn" is preferred because it refers to the
production process rather than the form of the finished product. Mold-pressed
beads are also known as molded, pressed, mandrel pressed, and mold pressed, the
latter designation is adopted here as it seems to best describe the process of
manufacture.
The surfaces of wound beads
usually exhibit swirl marks that encircle the axis. Bubbles are either round,
or elongate and oriented like the swirl marks. The perforation may taper
slightly and have an uneven surface. The wound-on-drawn beads are a rare type
recorded only at one site in the Pacific Northwest. It consists of a short section
of drawn tubing about which has been wound a layer of contrastingly colored
glass. Having a red exterior and white core, the only variety observed to date
is practically indistinguishable from its more common, all-wound counterpart.
The only difference is that the cores of the former contain linear bubbles that
parallel the axis.
Blown beads employ three methods
for its manufacturing. The first entailed fixing a small gather of molten glass
on the end of a blowpipe and blowing it into a bubble with a slight hollow
projection at either end. When the bubble had cooled, the projections were
broken off, creating the hole, and the sharp edges were generally
fire-polished. The second method is fundamentally similar apart from that the
bubble was blown in a two-piece mold, to impart either a design or a special or
uniform shape. In the third method, a series of bubbles was blown in a heated
glass tube. The latter was then broken into individual or segmented beads whose
ends may or may not have been fire polished.
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The glass beads market can be segmented
on the basis of its structure, which refers to the physical composition of a
bead. There are four structural categories. Simple beads are composed of a
single, undecorated layer of glass. Compound beads are composed of two or more,
undecorated layers of glass. Complex beads are simple specimens with
adventitious decoration. While composite beads are compound specimens with
adventitious decoration. Glass beads are used majorly in the ornaments
industry. Additionally, it is also used across liquid pavement markings,
binders, equipment, operator skills, and ambient conditions.
The report, at first, introduced
glass beads. It provided basic information regarding the definition of glass
beads, its various classifications, applications, industry chain structure, and
industry overview. The report provides the international glass beads market
analysis along with China domestic market analysis, economic situation,
macroeconomic environment analysis, and influence. The deep research report on
global and china glass beads industry also includes industry policy and plan,
product specifications, manufacturing process, product cost structure, major
market players, capacity production, production value gross margin, and company
related information, market share, demand supply shortage, and import export
consumption.
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