1、Designation: F2568 06 (Reapproved 2012) An American National StandardStandard Test Method forMeasurement of Sleeping Bags1This standard is issued under the fixed designation F2568; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, th
2、e year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThe measurements introduced in this test method are for the internal girth, internal length and width,and ex
3、ternal length and width of sleeping bags.The external length and width measurements or internal length and width measurements apply tolength and width measurements required for standardized Bedding Labels.The “girth” (that is, internal circumference) of a sleeping bag refers to the total internalcir
4、cumference at specific longitudinal measurement points of a closed sleeping bag. It is a physicaldimension/measurement used for specifications, design, and quality control. Girth in and of itself isnot to be used to predict thermal properties of a sleeping bag.1. Scope1.1 This test method determines
5、 the internal girth, theinternal length and width, and the external length and width ofa sleeping bag under a standardized measurement method.1.2 The measurement uses a physical measurement methodapplicable to any location where a flat level surface isprovided.1.3 The values stated in inch-pound uni
6、ts are to be regardedas standard.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitat
7、ions prior to use.2. Terminology2.1 Definitions:2.1.1 bookends, ntwo moveable panels on the externalmeasurement apparatus that slide in and out on the two axis ofthe sleeping bag.2.1.2 foot, nthat end of the sleeping bag designed for thefoot of the human body.2.1.3 girth, ntotal internal circumferen
8、ce of a closedsleeping bag as measured while the bag is lying flat on a flatlevel surface.2.1.4 head, nthat end of the sleeping bag designed for thehead and neck of the human body.2.1.5 lengthsee below:2.1.5.1 Option 1external length, nof a sleeping bag,greatest external distance from the head to th
9、e foot as measureddown the centerline of the sleeping bag and parallel to theplane of the surface of the measurement apparatus while thesleeping bag is in a relaxed state.2.1.5.2 Option 2internal length, nof a sleeping bag,distance from the liner/shell seam at the head of the sleepingbag to edge of
10、the zipper coil at the foot of the sleeping bag asmeasured parallel to the centerline of the sleeping bag andparallel to the plane of the surface of the measurementapparatus, while the sleeping bag is open on a flat level surface.For a mummy sleeping bag this measurement is not possible;use Option 1
11、.2.1.6 sleeping bag, nstructure made of down, syntheticfiberfill, shell fabrics, or other materials, or a combinationtherof, that are designed for people to use for thermal protec-tion when sleeping (for example, outdoors, tent, cabin).2.1.7 walls, nstationary sides along the length and widthof the
12、apparatus.2.1.8 widthsee below:2.1.8.1 Option 1external width, nof a sleeping bag,greatest distance from one external edge to the oppositeexternal edge, as measured perpendicular to the axis created bythe length and parallel to the plane of the surface of themeasurement apparatus, while the sleeping
13、 bag is in a closed,relaxed state.2.1.8.2 Option 2internal width, nof a rectangular sleep-ing bag, distance, divided by 2, from the edge of one zipper1This test method is under the jurisdiction of ASTM Committee F08 on SportsEquipment, Playing Surfaces, and Facilities and is the direct responsibilit
14、y ofSubcommittee F08.22 on Camping Softgoods.Current edition approved May 1, 2012. Published August 2012. Originallyapproved in 2006. Last previous edition approved in 2006 as F2568 06. DOI:10.1520/F2568-06R12.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19
15、428-2959. United States1coil to the opposite zipper coil edge, as measured perpendicularto the axis created by the length and parallel to the plane of thesurface of the measurement apparatus, while the sleeping bagis open on a flat level surface. For a mummy sleeping bag, thegirth measurement divide
16、d by two.3. Significance and Use3.1 In this context, this test can be used for specifications,design, and quality control. Girth in and of itself is not to beused to predict the thermal properties of a sleeping bag.4. Apparatus4.1 Four-Way Rule (for girth measurements)A measuringdevice that will mea
17、sure two linear distances that are perpen-dicular of each other. It must have sufficient length and widthto span all sleeping bags to be measured. A purpose-builtdevice may be used, or a combination of common structures assimple as retractable metal tape measures. The longer of thetwo rules will be
18、called the length rule, and the shorter will becalled the girth rule.4.2 Measurement Table (for external length and widthmeasurements)A rectangular table long enough and wideenough to accommodate the range of sleeping bags to bemeasured with two bookends also large enough to accommo-date the bags. T
19、he table has two walls. The long wall is alongthe length of the table at the back side and the short wall, whichis perpendicular to the sidewall, at the side of the table. Thearea inside of these side walls is the area used to perform themeasurements. The long wall, short wall, and two bookendsshoul
20、d be of sufficient height to accommodate the maximumheight of sleeping bags to be tested and all must be perpen-dicular to the plane of the table surface (see Fig. 1).4.3 Measurement Lines, using inches accurate to12 in., areplaced parallel to the long wall and parallel to the short wall inpositions
21、 that will accommodate the variety of bags beingtested in conjunction with the bookends (see Fig. 1).5. Conditioning5.1 The sleeping bag must be conditioned before anymeasurement is made.5.2 Remove the sleeping bag from the stuff or storage sackand unzip the bag completely.5.3 Shake the bag ten time
22、s.5.4 Lay the bag flat for 24 h.6. Procedure6.1 Girth and Internal Width Measurements:6.1.1 For Girth Measurement, place the conditioned bag,open, on a large, flat surface and place the length rule of theFour-Way Rule on the centerline of the top layer of the sleepingbag.6.1.1.1 Zero (0 in.) measure
23、ment is placed at the point at thehead of the bag where the insulation begins.6.1.1.2 Slide the girth rule of the Four-Way Rule down thelong piece to a predetermined distance from the zero (0 in.)measurement.6.1.1.3 Apply modest pull (approximately 5 lb) to the zipperapplied to the top and bottom la
24、yers to ensure that the sleepingbag is fully open.6.1.1.4 Shift the girth rule so that its zero (0 in.) measure-ment aligns with the edge of either the top or bottom layerzipper coil.6.1.1.5 Read the length rule that extends from the latitudinalrule zero measurement (0 in.) to the edge of the zipper
25、 along itsplane (see Fig. 2).6.1.2 For Internal Width of a Rectangular Sleeping Bag,measure the width at the head, the foot, and the middle of thesleeping bag, while open and under modest tension (approxi-mately 5 lb). Average these three measurements together anddivide by two.6.1.3 For Internal Wid
26、th of a Mummy Sleeping Bag, mea-sure the girth and divide by two.FIG. 1 Measurement TableF2568 06 (2012)26.2 Internal Length Measurements:6.2.1 For Internal Length of a Rectangular Sleeping Bag,measure the length at the right side, the left side and the middleof the sleeping bag, while open and unde
27、r modest tension(approximately 5 lb). Average these three measurements to-gether.6.3 External Length and Width Measurements:6.3.1 The relaxed, conditioned bag is laid on the measure-ment apparatus with the head end of the sleeping bag justtouching the short wall and the side of the sleeping bag just
28、touching the long wall of the device with the centerline of thesleeping bag oriented to the designated center line of the deviceas represented by the tape measure.6.3.2 The two moveable bookends are pushed along theirrespective axis until making contact with the sleeping bag.6.3.3 Measurements are t
29、aken from the apparatus scale.7. Report7.1 Report the girth to the nearest 0.5 in.7.2 Report the longitudinal distance within an agreed uponrange that correlate with agreed upon anatomical points (forexample, shoulder girth 62 in. at 11 to 15 in.).7.3 Report the internal length and width and the ext
30、ernallength and width to the nearest 1 in.8. Precision and Bias8.1 Precision and Bias are not available at this time.9. Keywords9.1 bedding label; girth; law tag; length; sleeping bag; widthASTM International takes no position respecting the validity of any patent rights asserted in connection with
31、any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technic
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33、 at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbo
34、r Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 2 Girth MeasurementF2568 06 (2012)3
