ASTM D2050-07
(Terminology)Standard Terminology Relating to Subassemblies
Standard Terminology Relating to Subassemblies
SCOPE
1.1 This terminology covers all terminology pertaining to items that are considered subassemblies in the manufacture of textile products except seams and stitches. Textile joining structures (seams and stitches) are discussed in detail in Practice D 6193
1.2 The principle parts of slide fastners defined in this terminology are illustrated in Figs. 1-10. These figures are descriptive only and are not intended to be restrictive as to design.
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Designation:D2050–07
Standard Terminology Relating to
1
Subassemblies
This standard is issued under the fixed designation D 2050; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope bead. The continuous element is secured to the tape by the
bead simultaneously with the bead formation.
1.1 This terminology covers all terminology pertaining to
bead, n—in a continuous element sewn type slide fastener,a
items that are considered subassemblies in the manufacture of
section of tape where a cord is attached to the tape by
textile products except seams and stitches. Textile joining
sewing.Acord is optional on continuous element sewn type
structures (seams and stitches) are discussed in detail in
slide fastener.
Practice D 6193
bottom assembly, n—thecomponentsofthelowermostpartof
1.2 The principle parts of slide fastners defined in this
a slide fastener that determines whether the slide fastener
terminology are illustrated in Figs. 1-10. These figures are
will be non-separable or separable. (See also “non-
descriptive only and are not intended to be restrictive as to
separable” slide fastener and “separable” slide fastener.)
design.
bottom stop, n—a part affixed to both stringers immediately
2. Referenced Documents below, or over the chain, holding the two stringers together
2
at the bottom and preventing the slider from leaving the
2.1 ASTM Standards:
chain when opening the chain. (See Fig. 1.)
D 2061 Test Methods for Strength Tests for Zippers
bridge top stop, n—a part affixed immediately above the
D 6193 Practice for Stitches and Seams
chain, holding the tops of two stringers together and pre-
3. Terminology
venting the slider from leaving the chain wehn closing the
chain. See Fig. 2.)
automatic lock slider, n—a slider that provides involuntary,
cam lock slider, n—a slider that incorporates a curled projec-
positive locking action on the chain when the pull is released
tionorprojectionsonthepullthatextendsthroughawindow
restricting the movement of the slider to open the chain
or windows to effect a locking action by pressing against the
unless a stress is applied through the stringers that exceeds
interlocking elements when the cam lock slider is in the
the locking capacity of the slider. See Test Methods D 2061
locked position.
bail, n—a portion or portions of the slider to which the pull or
chain, n—the portion of a slide fastener, without its compo-
pulls are attached. (Syn. lug.)
nents (top stops, bottom stops, slider, separating parts,etc.),
bead, n—in a individual element slide fastener, an enlarged
that is formed by alternately interlocking the elements of one
section on the inner edge of each tape formed by the cord
stringer with the elements of an opposing stringer .
and weft yarns of the tape used to attach the cord to the tape.
chain front, n—general reference of the slide fastener when
The interlockable elements are affixed to the bead on an
viewed from the element side on a continuous clement
individual element slider fastener.
fastener (CEF). For slide fastener designs where the chain is
bead, n—in a continuous element woven typeslide fastener,a
bilaterally symmetrical (such as an IEF for example) the
section of the tape where a cord and/or selected warp yarns
front is generally referenced by the location of the slider tab,
are woven in place by the weft yarns of the tape to form a
on a single tab slider, when opening or closing the chain.
chain thickness, n—themeasurementfromfronttobackofthe
chain. On a continuous element fastener (CEF) the measure-
1
ThisterminologyisunderthejurisdictionofASTMCommitteeD13onTextiles
ment includes the tape and sewing threads on a sewn type
and is the direct responsibility of Subcommittee D13.54 on Subassemblies. These
fastener or the tape and yarns for securing the element to the
definitions were developed in cooperation with the American Fastener and Closure
tape on a woven type fastener if these parts extend beyond
Assn. Inc.
the element.
Current edition approved Dec. 1, 2007. Published January 2008. Originally
approved in 1961. Last previous edition approved in 2004 as D 2050 – 04
chain width, n—the measurement between the shoulders of
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the interlocked elements or between the outermost edges of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the bead if the bead extends beyond the elements.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. connecting ring, n—a device used to secure a pull, having
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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D2050–04 Designation:D2050–07
Standard Terminology Relating to
1
Subassemblies
This standard is issued under the fixed designation D 2050; 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
1.1 This terminology covers all terminology pertaining to items that are considered subassemblies in the manufacture of textile
products (not including except seams and stitches).Textile joining structures (seams and stitches) are discussed in detail in Practice
D 6193
1.2 The principle parts of zippers slide fastners defined in this terminology are illustrated in Figs.1-9.Figs. 1-10. These figures
are descriptive only and are not intended to be restrictive as to design.
2. Referenced Documents
2
2.1 ASTM Standards:
D6193Practice for Stitches and Seams
D 2061 Test Methods for Strength Tests for Zippers
D 6193 Practice for Stitches and Seams
3. Terminology
automatic lock slider, n—a slider that provides involuntary, positive locking action on the chain when the pull is released. —a
slider that provides involuntary, positive locking action on the chain when the pull is released restricting the movement of the
slider to open the chain unless a stress is applied through the stringers that exceeds the locking capacity of the slider. See Test
Methods D 2061
bail, n—a portion or portions of the slider to which the pull or pulls are attached. (Syn. lug.)
bead, n—in a separate element zipper, an enlarged section on the inner edge of each tape to which interlockable elements are
affixed. in a individual element slide fastener, an enlarged section on the inner edge of each tape formed by the cord and weft
yarns of the tape used to attach the cord to the tape. The interlockable elements are affixed to the bead on an individual element
slider fastener.
bead, n—in continuous element zippers, an optional enlarged section of the tape located at the outer edge of the continuous
interlockable elements and against which the slider flanges bear. in a continuous element woven typeslide fastener, a section of
the tape where a cord and/or selected warp yarns are woven in place by the weft yarns of the tape to form a bead.The continuous
element is secured to the tape by the bead simultaneously with the bead formation.
bead, n—in a continuous element sewn type slide fastener, a section of tape where a cord is attached to the tape by sewing.Acord
is optional on continuous element sewn type slide fastener.
bottom assembly, n—the components of the lowermost part of a slide fastener which determinethat determines whether the slide
fastener will be non-separable or separable. (See also “non-separable zipper ” slide fastener and “separable zipper.) ” slide
fastener.)
bottom stop, n—a part affixed to both stringers immediately below, or over the chain, holding the two stringers together at the
bottom and preventing the slider from leaving the chain when opening the chain. (See Fig. 1.)
bridge top stop, n—apartaffixedimmediatelyabovethechain,holdingthetopsoftwostringerstogetherandpreventingtheslider
from leaving the chain wehn closing the chain. (SeeSee Fig. 2.)
cam lock slider, n—a slider that incorporates a curled projection or projections on the pull that extends through a window or
windows to effect a locking action by pressing against the interlocking elements when the cam lock slider is in the locked
position.
1
This terminology is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.54 on Subassemblies. These
definitions were developed in cooperation with the American Fastener and Closure Assn. Inc.
Current edition approved Oct.Dec. 1, 2004.2007. Published October 2004.January 2008. Originally approved in 1961. Last previous edition approved in 19972004 as
D 2050 – 034
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D2050–07
FIG. 1 Bottom Stop
FIG. 2 Bridge Stop
FIG. 3 Top Stop
FIG. 4 Principle Parts of Slide Fasteners—Continuous
...
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