ASTM D4850-03a

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D4850–03a
Standard Terminology Relating to
1
Fabric
This standard is issued under the fixed designation D 4850; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope architectural-use, n—in the building trade, a descriptive term
for fabrics used in fabric roof-systems or similar industrial
1.1 This terminology covers definitions of technical terms
applications. (See also fabric roof-system.) D 4851
used in the industry related to textile fabrics. Terms that are
bagging, n—any material, such as fabric or other suitable
generally understood or adequately defined in other readily
materialusedtoprotectcommoditiesduringshipmentand/or
available sources are not included. Other terminology stan-
storage.
dards that have terms related to textile fabrics are shown in 2.1
DISCUSSION—Fabrics may be of the woven, knitted, or non-woven
2. Referenced Documents
type, and are typically produced with cotton, jute, polyethylene, or
2.1 ASTM Standards:
polypropylene fibers. D 4850
D 123 Terminology Relating to Textiles
bending length, n—(1) general—a measure of the interaction
D 3990 Terminology Relating to Fabric Defects
between fabric weight and fabric stiffness as shown by the
D 4848 Terminology for Force, Deformation and Related
way in which a fabric bends under its own weight. It reflects
Properties of Fabric
the stiffness of a fabric when bent in one plane under the
force of gravity, and is one component of drape; (2)
3. Terminology
specific—the cube root of the ratio of the flexural rigidity to
3.1 Definitions:
the weight per unit area. D 1388
abrasion, n—the wearing away of any part of a material by
book fold, n—a fabric doubled selvage to selvage, then folded
rubbing against another surface. D 3884, D 3885, D 3886,
back and forth upon itself in predetermined lengths. (See
D 4157, D 4158, D 4685, D 4966
also shoe fold.)
abrasion cycle, n—one complete movement across the surface
DISCUSSION—When the piece is completed, the fold-edges on each
of a material.
side are folded once more upon themselves so that the fold-edges are
inside, forming a compact package as long as one half the width of the
DISCUSSION—The complete movement for an abrasion cycle is
fabric. D 4850
dependent on the action of the abrasion machine and the test method
used. It may consist of one back-and-forth unidirectional movement or
bow, n—a fabric condition resulting when filling yarns or
one circular movement, or a combination of both. D 3885
knittedcoursesaredisplacedfromalineperpendiculartothe
air permeability, n—the rate of air flow passing perpendicular
selvages and form one or more arcs across the width of the
through a known area under a prescribed air pressure
fabric. (See also double bow.) D 3882, D 3990
differential between the two surfaces of a material.
braided fabric, n—astructureproducedbyinterlacingthreeor
more ends of yarns in a manner such that the paths of the
DISCUSSION—Air permeability of fabric at a stated pressure differen-
yarns are diagonal to the vertical axis of the fabric.
tialbetweentwosurfacesofthefabricisgenerallyexpressedinSIunits
3 2 3 2
D 4850
as cm /s/cm and in inch-pound units as ft /min/ft calculated in
broken end, n—in woven fabrics, a void in the warp direction
operating conditions. (See permeability, porosity.) D 737
due to yarn breakage. D 3990
air-supported roof, n—a fabric roof-system that is properly
burlap, n—a coarse, heavy, plain weave fabric of yarns, such
secured and primarily supported and held in place by air
as bast or cotton fiber yarn. D 4850
pressure. D 4851
bursting strength, n—theforceorpressurerequiredtorupture
a fabric by distending it with a force, applied at right angles
to the plane of the fabric, under specified conditions.
1
ThisterminologyisunderthejurisdictionofASTMCommitteeD13onTextiles
D 3786, D 3787, D 3887
and is the direct responsibility of Subcommittee D13.59 on Fabric Test Methods,
circular bend, n—simultaneous, multidirectional deformation
General.
of a fabric in which one face of a flat specimen becomes
Current edition approved July 10, 2003. Published September 2003. Originally
approved in 1989. Last previous edition approved in 2003 as D 4850 – 03. concave and the other becomes convex. D 4032
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D4850–03a
coated fabric, n—a flexible material composed of a fabric and parallel to either the filling or the warp on a woven fabric in
any adherent polymeric material applied to one or both which minimum
...