Page 103 - 2010-2022 hose manufactureing ability and guide

loop-edge tape: a tape woven with a selvage migration: in a rubber compound, the
edge formed by looping the filling threads to movement of more or less rubber soluble
prevent raveling, allowing extensibility for even materials from a point of high concentration to
tensions. one of low or zero concentration. Migration is
applied to the movement of accelerators,
loose cover: a separation of the cover from the antioxidants, antiozonants, sulphur, softeners
carcass or reinforcements.
and organic colors. It is a form of diffusion.
loose ply: a separation between adjacent plies.
migration stain: a discoloration of a surface
loose tube: a tube separated from the carcass. by a hose which is adjacent to but not touching
the discolored surface.
lot: a specified quantity of hose from which a
sample is taken for inspection. mildew inhibited: containing material to
prevent or retard the propagation of a fungus
low temperature flexibility: the ability of a
hose to be flexed, bent or bowed at low growth.
temperatures without loss of serviceability. mildew resistance: withstanding the action of
mildew and its deteriorating effect.
low temperature flexing: the act of bending or
bowing a hose under conditions of cold mill: a machine with two horizontal rolls
environment. revolving in opposite directions used or the
mastication or mixing of rubber.
LPG: the abbreviation for liquefied petroleum
gas. minimum burst pressure: the lowest pressure
at which rupture occurs under prescribed
M
conditions.
machine made: a mandrel-built reinforced
hose made by machine as opposed to hose built mix: see compound.
by hand. modulus: in the physical testing of rubber, the
load necessary to produce a stated percentage of
mandrel: a form, generally of elongated round
section, used for size and to support hose during elongation, compression or shear.
fabrication and/or vulcanization. It may be rigid moisture absorption: the assimilation of water
or flexible. by a rubber or textile product.

mandrel built: a hose fabricated and/or moisture regain: the re absorption of water by
vulcanized on a mandrel. textile.

mandrel wrapped: a tubing, built up by monomer: a low molecular weight substance
wrapping a thick unvulcanized sheet around a consisting of molecules capable of reacting with
mandrel. like or unlike molecules to form a polymer.
manufacturer's identification: a code symbol Mooney scorch: a measure of the incipient
used on or in some hose to indicate the curing characteristics of a rubber compound
manufacturer. using the Mooney viscometer.

mass flow rate: the mass of fluid per unit of Mooney viscosity: a measure of the plasticity
time passing a given cross-section of a flow of a rubber or rubber compound determined in a
passage in a given direction. Mooney shearing disc viscometer.
masterbatch: a preliminary mixture of rubber MPa: megapascal a measure of pressure, one
and one or more compound ingredients for such MPa equals 145 psi
purposes as more thorough dispersion or better
processing, and which will later become part of MSHA: Mine Safety and Health
Administration
the final compound in a subsequent mixing
operation. N
NAHAD: National Association of Hose and
Accessories Distributors

RMA/IP-2/2003 82