Page 102 - 2010-2022 hose manufactureing ability and guide

L lead press cure: a near-obsolete process
wherein a lead sheath acts as a restraining
laminated cover: a cover formed to desired member or mold during vulcanization.
thickness from thinner layers vulcanized
together. lead press finish: the type of exterior surface
obtained by the lead press method of
lap: a part that extends over itself or like part, vulcanization.
usually by a desired and predetermined amount.
lead press joint: see lead stop.
lap seam: a seam made by placing the edge of
one piece of material extending flat over the lead stop: the mold mark in a lead press hose
edge of the second piece of material. cover caused by stopping the lead press to add
another lead billet.
lay: (1) the direction of advance of any point in
a strand for one complete turn (2) the amount of leaker: (1) a crack or hole in the tube which
advance of any point in a strand for one allows fluids to escape; (2) a hose assembly
complete turn. See also: pitch, spiral lay. which allows fluids to escape at the fittings or
couplings.
layer: a single thickness of rubber or fabric
between adjacent parts. legs: tension filaments appearing when
cemented or frictioned plies are pulled apart.
lead burst: a leak in lead press hose during
vulcanization caused by a rupture of the lead Colloquial.
casing. leno breaker: an open mesh fabric made from
coarse ply yarns, with a leno weave. See also:
lead casing: the extruded lead tube or sheath
which confines the hose during vulcanization. breaker ply.
leno weave: a fabric structure in which the
lead chip mark: a minor nick or mark in the warp yarns are bound in by the filling, resulting
surface of the cover of lead finished hose
caused by particles of lead flakes sloughing off in an open perforated fabric.
the lead extrusion die during the process of lead life test: a laboratory procedure used to
covering. determine the resistance of a hose to a specific
set of destructive forces or conditions. See also:
lead cure finish: a type of exterior surface, accelerated life test.
either ribbed, smooth, or longitudinally
corrugated, obtained by the lead pipe mold light resistance: the ability to retard the
method of vulcanization. deleterious action of light.

lead dent: an indentation in the surface of lead lined bolt holes: the bolt holes which have
finished hose caused by deformations in lead been given a protective coating to cover the
covering before vulcanization. internal structure.
lead die mark: the longitudinal line or mark in lined hose: term generally referring to fire
the cover of lead finished hose caused by a hose having a seamless woven jacket or jackets
damaged lead extrusion pin. and a tube.

lead discoloration: a dark stain on the colored liner: a separator, usually cloth, plastic film or
cover of lead finished hose caused by a paper, used to prevent adjacent layers of
chemical reaction of the lead with the rubber material from sticking together.
compound.
lining: see tube.
lead flake: a particle of lead which remains on livering: a gelling in cement giving a liver-like
the cover of lead finished hose after the lead consistency.
covering has been stripped from the hose
loop edge: a selvage formed by having the
lead pop: a surface protrusion, the result of a filling loop around a catch cord or wire which is
rupture of lead sheath during vulcanization.
later withdrawn, leaving small loops along the
edge of the cloth.

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