Page 98 - 2010-2022 hose manufactureing ability and guide

crimp: in fabric, (1) the sinusoidal curvature density: the mass per unit of volume of a
impressed in the warp or filling during material.
weaving; (2) the difference in distance between
two points on a yarn as it lies in a fabric, and design factor: a ratio used to establish the
working pressure of the hose, based on the burst
the same two points when the yarn has been strength of the hose.
removed from the fabric and straightened under
tension. dielectric strength: the measure of a product's
ability to resist passage of a disruptive
crimping: the act of forming a hose fitting discharge produced by an electric stress.
with a surrounding series of die segments to
compress the hose within the fitting. DIN: Deutsches Institut for Normung-German
National Standards Organization.
crosshead extruder: an extruder so
constructed that the axis of the emerging DOD: Department of Defense (U.S.)
extruded product is at right angles to the axis of DOT: Department of Transportation (U.S.)
the extruder screw. Commonly used for
applying the cover to braided or spiraled hose. drift: a change in a given hardness value after
a specified period of time.
cross-link: chemical bond bridging one
polymer chain to another. dry: the absence of tack; no adhering
properties.
cross wrap: the overlapping layer or layers of
narrow tensioned wrapper fabric spiraled duck: a term applied to a wide range of
circumferentially over the outside of a hose to medium and heavy-weight woven fabrics.
obtain external pressure during vulcanization. durometer: an instrument for measuring the
See also: wrapped cure. hardness of rubber and plastic compounds.
crystallization (polymer): an arrangement of durometer hardness: a numerical value which
previously disordered polymer segments of indicates the resistance to indentation of the
repeating patterns into a geometric symmetry blunt indentor of the durometer.
(which results in a reversible hardening of a
rubber compound). E

cubical expansion: the volume increase of eccentricity: in hose, tubing or cylindrical
hose when subjected to internal pressure. It is articles, the condition resulting from the inside
generally reported in cubic centimeters per unit and outside diameters not having a common
length of hose. center. See also eccentric wall and off-center.

cure: the act of vulcanization. See also: eccentric wall: in hose or tubing, a wall of
vulcanization. varying thickness.

cure time: the time required to produce elastic limit: the limiting extent to which a
vulcanization at a given temperature. body may be deformed and yet return to its
original shape after removal of the deforming
cut resistant: having that characteristic of force.
withstanding the cutting action of sharp objects.
elastomer: macromolecular material which
D returns rapidly to approximately its initial

date code: any combination of numbers, dimensions and shape after substantial
letters, symbols or other methods used by a deformation by a weak stress and release of the
manufacturer to identify the time of stress; an elastic polymer.
manufacture of a product.
elongation: the increase in length expressed
denier: a yarn sizing system for continuous numerically as a fraction or percentage of the
filament synthetic fibers. The denier of filament initial length.
yarn is the weight in grams of a length of 9000 EN: European Norms
meters of that yarn.

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